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Surveying with ProMark2

33

Surveyi

ng

with Pr

oMark2

horizontal and 3 existing vertical control points.

Again, if you were to perform this survey with a conventional total station, you would design a
traverse plan which produced a strong looking network of closed-loop traverses through the
points of the survey. Figure 3.4 shows one possible network design.

Figure 3.3

15-Point Control Survey Example

Figure 3.4

Network Design for 15-Point Control Survey

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Содержание CGRS

Страница 1: ...ProMark2 TM System User Guide www thalesnavigation com THALES NAVIGATION ...

Страница 2: ...avigation Your rights with regard to this publication and the computer programs are subject to the restrictions and limitations imposed by the copyright laws of the United States of America U S A and or the jurisdiction in which you are located For information on translations and distribution outside the U S A please contact Thales Navigation Part Number 630860 01C Trademark Notice Locus Z Xtreme ...

Страница 3: ...EXCEPT AS SET FORTH IN THIS LIMITED WARRANTY ALL OTHER EXPRESSED OR IMPLIED WARRANTIES INCLUDING THOSE OF FITNESS FOR ANY PARTICULAR PURPOSE MERCHANTABILITY OR NON INFRINGEMENT ARE HEREBY DIS CLAIMED AND IF APPLICABLE IMPLIED WARRANTIES UNDER ARTICLE 35 OF THE UNITED NATIONS CONVENTION ON CONTRACTS FOR THE INTERNATIONAL SALE OF GOODS Some national state or local laws do not allow limitations on im...

Страница 4: ...Directive 1999 44 EC in the EC Member States and certain limitations contained in this warranty including the exclusion or limitation of incidental or consequential damages may not apply For further information concerning this limited warranty please call or write Thales Navigation Inc 471 El Camino Real Santa Clara California 95050 Phone 1 408 615 5100 Fax 1 408 615 5200 or Thales Navigation SA Z...

Страница 5: ...RECEIVER OR ACCESSORIES WHICH ARE COVERED BY THIS WARRANTY REPAIRS UNDER THIS WARRANTY SHALL ONLY BE MADE AT AN AUTHORIZED THALES NAVIGATION SERVICE CENTER ANY REPAIRS BY A SERVICE CENTER NOT AUTHORIZED BY THALES NAVIGATION WILL VOID THIS WARRANTY 3 PURCHASER S DUTIES To obtain service contact and return the product with a copy of the original sales receipt to the dealer from whom you purchased th...

Страница 6: ...THALES NAVIGATION BE RESPONSI BLE FOR SUCH DAMAGES EVEN IF THALES NAVIGATION HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAM AGES Some national state or local laws do not allow the exclusion or limitation of incidental or consequential damages so the above limita tion or exclusion may not apply to you 7 COMPLETE AGREEMENT This written warranty is the complete final and exclusive agreement between ...

Страница 7: ... GPS Range Pole 11 Specifications 12 Surveying with ProMark2 14 Navigating with ProMark2 15 Loading Maps from MapSend CD 16 Time in the Field 20 Stop and go 20 Kinematic 20 Where to Find Information 21 Technical Support 21 Chapter 2 Getting Started 23 Overview 23 Control Buttons 23 Battery Life 25 Installing Batteries 28 Memory Management 28 Initialization for First Time Use 29 Downloading Collect...

Страница 8: ...tic Screen 112 Point Attribute Stop and go Screen 114 Point Attribute Kinematic Screen 116 Site ID Screen 117 Site Description Screen 118 Init Mode Screen 119 Recording Interval Screen 120 Recording Interval List Screen 121 Antenna Screen 122 File Manager Screen 123 Unit of Measure Screen 125 Receiver ID Screen 126 Contrast Screen 127 Survey Status Static Screen 128 Survey Status Stop and go Scree...

Страница 9: ...ark2 17 Figure 1 21 Establishing Communication with ProMark2 18 Figure 1 22 GPS Detected Message 18 Figure 1 23 Space Required on ProMark2 to Upload a Region 19 Figure 1 24 Region Upload Progress Bars 19 Figure 2 1 Control Buttons used for Survey Functions 23 Figure 2 2 Battery Life vs Temperature 25 Figure 2 3 Low Battery Alarm 26 Figure 2 4 Extreme Low Power Alarm 27 Figure 2 5 Battery Installat...

Страница 10: ... 28 Rover Antenna from Initializer Bar to Range Pole 61 Figure 3 29 Mode Screen 66 Figure 3 30 Survey Screen 66 Figure 3 31 Survey Menu 67 Figure 3 32 Point Attribute Screen 68 Figure 3 33 Recording Interval Screen 69 Figure 3 34 File Manager Screen 70 Figure 3 35 Unit of Measure Screen 71 Figure 3 36 Receiver ID Screen 72 Figure 3 37 Contrast Screen 73 Figure 3 38 Survey Screen 74 Figure 3 39 Sat...

Страница 11: ...creen 111 Figure 4 7 Point Attribute Static Screen 112 Figure 4 8 Point Attribute Stop and go Screen 114 Figure 4 9 Point Attribute Kinematic Screen 116 Figure 4 10 Site ID Screen 117 Figure 4 11 Site Descriptor Screen 118 Figure 4 12 Init Mode Screen 119 Figure 4 13 Recording Interval Screen 120 Figure 4 14 Recording Interval List Screen 121 Figure 4 15 Antenna Screen 122 Figure 4 16 File Manager...

Страница 12: ...xii Promark2 User s Guide Figure 4 29 Low Memory Alarm 139 Figure 4 30 Kinematic Alarm 140 Figure 4 31 Power Down Screen 141 ...

Страница 13: ...reen Parameters 117 Table 4 8 Site Descriptor Screen Parameters 118 Table 4 9 Init Mode Screen Parameters 119 Table 4 10 Recording Interval Screen Parameters 120 Table 4 11 Recording Interval List Screen Parameters 121 Table 4 12 Antenna Screen Parameters 122 Table 4 13 File Manager Screen Parameters 123 Table 4 14 Unit of Measure Screen Parameters 125 Table 4 15 Receiver ID Screen Parameters 126 ...

Страница 14: ...xiv ProMark2 User s Guide ...

Страница 15: ...note that the kinematic initialization bar Figure 3 27 which is currently included in systems containing two or three receivers is not included in Figure 1 1 The ProMark2 system utilizes standard tripods or fixed height GPS tripods to position system components above a given survey point The ProMark2 receiver collects signals broadcast from GPS satellites and stores this information in its interna...

Страница 16: ...ving precise positioning data and presenting the results in easily understood report formats Items Supplied with ProMark2 The items supplied with ProMark2 are described in the following paragraphs ProMark2 GPS Receiver The ProMark2 GPS receiver Figure 1 2 acquires and stores raw GPS satellite data at each survey point The data from each ProMark2 is later post processed to determine the relative po...

Страница 17: ...a collection point for the raw GPS satellite data For this reason it must be accurately positioned over the point to be surveyed using a standard tripod or fixed height GPS tripod External Antenna Cable The external antenna cable Figure 1 4 connects the ProMark2 receiver to the external antenna The small end of the cable connects to the ProMark2 through the back of the field receiver bracket The l...

Страница 18: ...t The field receiver bracket Figure 1 6 serves a number of functions First it provides the means for mounting the ProMark2 GPS receiver to the tripod Second it lends support for the external GPS antenna cable connection to the back of the ProMark2 receiver Finally it provides the interface for connection of the external power pack to the ProMark2 receiver Figure 1 5 Vertical Antenna Extension Figu...

Страница 19: ...y point The end of the tape hooks onto the antenna The tape is extended until the spike on the tape case is on the point Then the height of the antenna is noted on the tape Field Bag The field bag Figure 1 8 is used to transport the components of each ProMark2 GPS receiver system between the office and the field Figure 1 7 HI Measurement Tape Figure 1 8 Field Bag ...

Страница 20: ... CD The optional MapSend Streets CD Figure 1 10 contains detailed street level maps that can be loaded into the internal memory of the ProMark2 receiver These detailed maps can then be used with the navigation functions of the receiver to assist in navigating to the job site Be aware that the maps and the raw GPS satellite data occupy the same internal 8 megabytes of memory thus the larger map you...

Страница 21: ... s guide Documentation The following documentation items are supplied with ProMark2 ProMark2 Survey System User s Guide for Survey Instructions on using ProMark2 for surveying User s Guide for Navigation Instructions on using ProMark2 for navigation This manual may be included with your system as the MAP330 User Manual Ashtech Solutions User s Guide Instructions on using the Ashtech Solutions offi...

Страница 22: ... receiver in your system you will need a tripod tribrach and tribrach adapter Figure 1 12 Figure 1 13 and Figure 1 14 to position the GPS antenna over the survey point The tribrach provides an optical sight and leveling adjustments that facilitate accurately positioning the antenna over the survey point The tribrach adapter slides into the tribrach providing the interface to the GPS antenna Altern...

Страница 23: ...ure 1 13 Tribrach and Tribrach Adapter Figure 1 14 Tribrach Adapter Mounted to Tribrach Tribrach adapter Tribrach Antenna adapter 5 8 x 11 UNC thread Lock for antenna adapter Optical sight Levelling screw Levelling bubble Locking tab ...

Страница 24: ...ure 1 15 The fixed height GPS tripod has the advantage of eliminating the possibility of measuring and or recording an incorrect HI since the height is fixed HI blunders are one of the most common mistakes during data collection Note the vertical antenna extension is 3 inches 0 0762 m Figure 1 15 Fixed Height GPS Tripod with Extender and GPS Antenna ...

Страница 25: ...Introduction 11 Introduction GPS Range Pole An option for mounting the ProMark2 when operating in kinematic mode is a range pole Figure 1 16 Figure 1 16 GPS Range Pole ...

Страница 26: ... point spacing Static vector length Up to 20 kilometers Over 20 kilometers possible during periods of low ionospheric activity Survey point spacing Stop and go vector length Up to 10 kilometers Observation time Static 20 to 60 minutes typical depending upon vector length Observation time Stop and go 15 seconds typical Initialization time Stop and go 15 seconds on known points 5 minutes on initiali...

Страница 27: ...e to the ProMark2 screen Battery life Internal 2 AA Up to 8 hours with alkaline 20 C Up to 13 hours with lithium 20 C External internal 8 AA Up to 32 hours with alkaline 20 C Up to 52 hours with lithium 20 C See Battery Life on page 25 for details Data storage memory capacity 8 megabytes 72 hours of survey data 100 data files See Memory Management on page 28 for details Table 1 1 Performance and P...

Страница 28: ...ns software The post processing activity computes vectors position differences to determine the position of all observed points relative to one or more fixed point positions The static data collection method produces the most accurate and reliable results of any mode of GPS data collection This is due primarily to the extended observation periods required for static data collection In the stop and...

Страница 29: ...ating with ProMark2 The ProMark2 includes a wide range of navigational capabilities that you will find useful in your day to day surveying operations Two useful navigation features are The street database and map screen can be utilized to help you find a project site The ProMark2 serves as an excellent reconnaissance tool You can enter the known coordinates of the feature you wish to recon as a wa...

Страница 30: ...ected region should appear See the window below Enter a name for the area At this point your region should be added to the list of your current regions with names sizes dates and so on see at the right of the main window Mark the check box which is related to the region you need to upload you can choose 4 regions for uploading Then go to Regions and select Upload to GPS you can also use the toolba...

Страница 31: ...e this window below Press Settings and the following window with available ports should appear You can specify the port and press Test Or you can press Autodetect and the software will find the receiver and the port itself Note that the baud rate of the serial link depends on the baud rate of the receiver If you want to upload maps quickly you need to increase the baud rate in ProMark2 Then depend...

Страница 32: ...erial cable is connected to the PC and not broken and if the receiver is switched on the following window should appear Press OK and you will see the following message Figure 1 21 Establishing Communication with ProMark2 Figure 1 22 GPS Detected Message ...

Страница 33: ...t total sizes of your maps and available space should appear Press Finish and you will see the progress bar of uploading After the uploading process is finished you can use maps in ProMark2 Figure 1 23 Space Required on ProMark2 to Upload a Region Figure 1 24 Region Upload Progress Bars ...

Страница 34: ...al the amount of time required to occupy a point depends on several factors 1 Distance between survey points In general the greater this distance the longer the observation time 2 Environmental conditions or the amount of obstruction or canopy preventing a completely open sky view Some obstructions may block the reception of the satellite signal requiring longer observation times to collect additi...

Страница 35: ...ng FTP site ftp ftp thalesnavigation com Reference Manuals ProMark2 Technical Support Thales Navigation is committed to providing top technical support and service to our customers worldwide You can contact Thales Navigation as follows The Front Line Contact directly at 1 800 229 2400 or 1 408 615 3980 between 7AM 6PM PST for prompt professional service This number connects you to an Automatic Cal...

Страница 36: ...22 Promark2 User s Guide ...

Страница 37: ... collect survey data with accompanying point attribute data Control Buttons Figure 2 1 shows the control buttons used for survey functions Table 2 1 describes the function of each button Figure 2 1 Control Buttons used for Survey Functions Confirms data entry or menu selection Cancels last operation scrolls screens Accesses and toggles screens Selects item on screen Accesses menus and other functi...

Страница 38: ...conds while the receiver is on it turns on the screen backlight at the low setting If pressed and held again for 2 seconds it sets the backlight to high Finally press and hold the button again for 2 seconds to turn off the backlight MARK GOTO The MARK GOTO button serves one purpose which is to access the Point Attribute screen page 112 at any time during survey data collection NAV SURV The NAV SUR...

Страница 39: ...vac IC3 may not have sufficient power to drive the antenna and may result in cycle slips in the collected data Figure 2 2 shows the ProMark2 battery life vs temperature for a set of 2 alkaline and a set of 2 lithium batteries These graphs were produced from test results using the Energizer brand of batteries Figure 2 2 Battery Life vs Temperature Lithium Battery Life 2 AA Energizer batteries 10 0 ...

Страница 40: ...ccomplished by monitoring the remaining voltage of the batteries as they are discharged The ProMark2 receiver displays battery alarms when the remaining battery life gets low The first alarm is the Low Battery alarm Figure 2 3 Remaining operational time after the appearance of this alarm is very dependent on battery type used and the temperature at which the receiver is being operated You can expe...

Страница 41: ...he Extreme Low Power alarm Figure 2 4 When this alarm appears the active survey data file is closed and the receiver is shut down after 10 seconds The current batteries will need to be replaced in order to continue with the survey Figure 2 4 Extreme Low Power Alarm ...

Страница 42: ... the worst case condition where 10 satellites are being tracked continuously at a one second interval Seventy two hours can be stored at a 10 second interval Below are some tips on managing the data storage memory of the ProMark2 to minimize the chances of losing data or running out of memory during data collection Note If maps are loaded the storage capacity will be less 1 Download collected data...

Страница 43: ...ark2 will not allow you to utilize more than 4 megabytes of data storage memory for detailed street maps This ensures that there will always be at least 4 megabytes of memory available for survey data storage Initialization for First Time Use When turned on for the first time the ProMark2 must be initialized The reason for initialization is to speed up the process for computing the first position ...

Страница 44: ...ly retained by the hook on the bracket 2 Connect the download cable to one of the COM ports on the office computer COM1 is the recommended port 3 Turn on the ProMark2 The opening screen appears momentarily followed by the Mode screen 4 To download the data from the ProMark2 receiver to the office computer follow the procedure outlined in Chapter 4 of the Ashtech Solutions User s Guide under the he...

Страница 45: ...first plan how you will execute your static survey Proper planning will greatly increase the chances of success There are two primary areas of static survey planning the network design and observation plan Each is discussed below Network Design You have identified a survey for which you wish to use the ProMark2 system to establish control Regardless if the number of control points to be establishe...

Страница 46: ...gh the two new points Figure 3 2 The same philosophy can be used for GPS surveys Figure 3 2 is your network design for this survey The previous example resulted in a very simple network design Figure 3 3 represents a more complex control survey where 10 new points are to be established based on 2 existing Figure 3 1 Three point Control Survey Example Figure 3 2 Closed Loop Traverse Design ...

Страница 47: ...erform this survey with a conventional total station you would design a traverse plan which produced a strong looking network of closed loop traverses through the points of the survey Figure 3 4 shows one possible network design Figure 3 3 15 Point Control Survey Example Figure 3 4 Network Design for 15 Point Control Survey ...

Страница 48: ... them Observation Plan With the network design completed the next step is to determine how and when data collection will be performed to produce the desired network First let s discuss the how If you were to use a conventional total station to perform the survey in Figure 3 2 your resulting traverse could probably look something like Figure 3 5 The number of traverse legs required to traverse betw...

Страница 49: ...aneously collecting data on points 1 and 3 When completed move the ProMark2 receiver from point 1 to point 2 Perform the final observation between points 3 and 2 When this data is downloaded and processed the result will be three vectors delta positions forming the network design seen in Figure 3 6 Now consider the situation where a 3 receiver ProMark2 system is used By placing one receiver on eac...

Страница 50: ...e performed using a 3 receiver ProMark2 system With 3 receivers each observation session will produce 2 vectors from the network design For example you may start by placing one receiver on point 1 the second on point 2 and the third on point 7 These three receivers would simultaneously collect data on these three points resulting in the vectors between points 1 and 2 and points 1 and 7 In addition...

Страница 51: ...GPS satellites is low or the satellite distribution is poor will require extended data collection periods to ensure quality results In rare instances availability and distribution may be so poor that you are better off not performing your survey during these periods Included in the Ashtech Solutions processing software package is a module called Mission Planning The Mission Planning software provi...

Страница 52: ...y and distribution appears observation times will normally need to be extended to compensate for this event The ProMark2 receiver includes a feature which estimates the observation time required to produce a quality solution This feature is called the Observation Timer and is discussed in more detail later on in this chapter The Observation Timer takes into account satellite availability and distr...

Страница 53: ...collection begin All the data collected by the first receiver up to this time is of no use and will be ignored during data processing Equipment Check Prior to leaving the office to perform your survey be sure to perform a thorough check of your GPS equipment 1 Check through the ProMark2 system to ensure all components are present to successfully perform the survey 2 Check to ensure that you have s...

Страница 54: ...kes GPS use possible along a tree line or against the face of a building but only if that location leaves enough of the sky open to allow the system to observe at least 5 satellites For the above reasons make every effort to locate new points to be established in areas where obstructions are at a minimum Unfortunately the site location is not always flexible You may need to determine the position ...

Страница 55: ...r and a tribrach adapter to the GPS antenna With the GPS antenna in hand attach the included vertical extension bar to the 5 8 11 thread on the bottom of the antenna Attach a tribrach adapter to the other end of the vertical extension bar Figure 3 9 shows the individual pieces The final assembly should resemble that shown in Figure 3 10 If using a fixed height GPS tripod rather than a conventional...

Страница 56: ... and then tilt the receiver into place as seen in Figure 3 11 5 Attach the field bracket ProMark2 combination onto the tripod Be careful not to disturb the tripod when mounting the bracket Place the bracket at a Figure 3 10 GPS Antenna Mounted on Tripod using Tribrach and Extender Figure 3 11 Mounting ProMark2 into Field Bracket Cradle Retaining hook Hook engaged ...

Страница 57: ...S antenna screw in the antenna cable connector until the connection is tight Connect the other end of the cable to the back of the ProMark2 receiver This connection is made by simply pushing the connector into the back of the receiver Figure 3 13 shows the proper connection of the antenna cable to the antenna and receiver Figure 3 12 Field Bracket on Tripod ...

Страница 58: ... the computed position of the antenna center to be transferred to the ground point It is critical that the HI of the antenna above the monument is measured accurately The HI tape is the tool you use to measure the HI of the GPS antenna Hook the tape into the groove on the side of the GPS antenna Extend the tape down to the survey monument placing the point on the end of the tape on the monument Lo...

Страница 59: ... process of using the user interface of the ProMark2 to prepare the receiver to collect GPS data at this survey point For further details on any screen presented in these procedures go to Chapter 4 Detailed Screen Descriptions and then locate the description for the particular screen of interest 1 Turn on the ProMark2 receiver by pressing the red on off button on the face of the Figure 3 14 Measur...

Страница 60: ...ed waypoints is no better than 3 16 meters With Survey highlighted press Enter to bring up the Survey screen Figure 3 16 The Survey screen provides the opportunity to perform receiver and survey setup functions prior to beginning survey data collection If you select Setup you will be presented with the Survey Menu from which parameters are set Selecting Collect Figure 3 15 Mode Screen Figure 3 16 ...

Страница 61: ...veys 3 Select Setup from the Survey screen With Setup highlighted press ENTER to bring up the Survey Menu Figure 3 17 The Survey Menu provides you access to receiver and survey setup functions You may wish to exercise some of these functions prior to beginning data collection 4 From the Survey Menu select Survey Mode Set the mode to Static 5 From the Survey Menu select Point Attribute Enter attrib...

Страница 62: ...en you are finished to return to the Survey Menu Refer to the description of the Point Attribute Static screen page 112 for further details regarding this screen 6 From the Survey Menu select Antenna Set the antenna height parameters for this point Select Slant if you are measuring the antenna height to the outside edge of the GPS antenna or Vertical if you are measuring the antenna height to the ...

Страница 63: ...eiver Indicates that the file has been downloaded from the receiver Use the up down arrows to select the file to be deleted Use the left right arrows to select Delete or Del All When Delete is selected only the selected file is deleted When Del All is selected all saved files are deleted Press the ESC button when you are finished with this screen to return to the Survey Menu Refer to the File Mana...

Страница 64: ... the Observation Timer utilizes Press Enter to access the selection list of units Highlight the desired selection and press Enter again Select Save to return to the Survey Menu 9 From the Survey Menu select Receiver ID Change the ID if the current entry is not the desired one With Receiver ID highlighted press ENTER to bring up the Receiver ID screen Figure 3 21 Figure 3 20 Unit of Measure Screen ...

Страница 65: ...survey Otherwise raw data files will be given the same name causing problems when the data is downloaded to the same location on the office computer for processing Press Enter to edit the receiver ID Change the ID to the desired value After entry of the desired ID select Save to return to the Survey Menu Refer to the Receiver ID screen in Chapter 4 page 126 for further details regarding this scree...

Страница 66: ... contrast of the receiver screen Use the left right arrows to adjust the contrast Press the ENTER button when finished to return to the Survey Menu 11 Press the Esc button to exit the Survey Menu All setup functions have been examined and set Press the Esc button to close the Survey Menu and return to the Survey screen repeated in Figure 3 23 Figure 3 22 Contrast Screen ...

Страница 67: ... begin data collection The remaining steps will present how to start the data collection process and how to monitor the progress of your survey 12 From the Survey screen select Collect Data With Collect Data highlighted press ENTER to bring up the Satellite Status screen Figure 3 24 Figure 3 23 Survey Screen ...

Страница 68: ...ndicators power on the left and memory on the right The memory status indicator shows both graphically and numerically the percentage of memory free for data storage Once data storage begins the percent number will flash giving a visual cue that data collection has begun The power status indicator shows a fuel gauge like graphic of remaining power when internal batteries are in use If an external ...

Страница 69: ...sed To make this determination the observation timer takes into account the number of satellites observed during the observation session the geometry of the satellites PDOP and breaks in the continuous tracking of the satellites caused by obstructions Using this information the observation timer informs you when enough data has been collected for different distances between you and other receivers...

Страница 70: ...lect a little extra data to ensure the processing will go smoothly Elapsed Time The Elapsed Time field displays the amount of time since data storage began for the current observation session As you become more experienced with the system you will get a feel for the amount of time required to collect data under different observation conditions Sats The Sats field displays the current number of hea...

Страница 71: ... that enough data has been collected by all the GPS receivers currently collecting data in this observation session simply turn off the receiver to end the session Note To avoid possible damage to the external antenna connector unplug the external antenna cable from the receiver prior to removing the receiver from the cradle Also note that if the receiver ID is changed while collecting data the na...

Страница 72: ... repeated Continuous kinematic data collection is suited for collecting bulk points with minimal attributing terrain modelling or linear features such as a road centerline During continuous kinematic data collection the user never has to stop moving A point is collected every time the receiver records a data record The recording interval for this application would typically be 1 5 seconds and the ...

Страница 73: ...e following tasks Manage data files in the GPS receiver Enter pertinent survey point attribute information required for data processing Monitor the progress of the kinematic survey Stop and go or Kinematic Base When selecting the location for your base be sure the location is as free of satellite obstructions as possible The more open the area the better your chances of a successful survey If obst...

Страница 74: ... Figure 3 26 Note The base antenna is centered and levelled above the survey mark The rover antenna is offset on the initializer bar The initialization bar gives an accurate baseline of 0 2 m 0 656 ft for initialization Figure 3 27 Figure 3 26 ProMark2 Antennae with Initializer Bar Figure 3 27 Initializer Bar ...

Страница 75: ...culate a set of parameters termed Integer Ambiguities During the initialization process you are collecting the data required to calculate the Integer Ambiguities Once the integer ambiguities have been calculated your current location can be determined very precisely Solving for the integer ambiguities is the most time consuming part of GPS data collection Once solved the position of your current l...

Страница 76: ...minute observation is all that is needed because we have some initial information regarding the short vector between the base and rover receivers We know that the vector is exactly 0 200 meters long the length of the bar We also know that the delta height of the vector is 0 000 base and rover receivers are at the same HI Based on this given information the coordinates of the rover location can be ...

Страница 77: ...quirements to perform a Known Point initialization The requirements are stated above a point whose position is known well with relation to the base point Below are some scenarios where Known Point initialization is best used You are working on a landfill project where you are required to perform a topo once a week for 2 months In perparation you establish 6 control points around the landfill using...

Страница 78: ...empt to observe some points in an area where there are some trees You suspect that you may lose initialization while attempting to get close to the trees You are not close to the kinematic base nor close to any known points As a pre caution you put a PK nail in the ground at your current location and observe it with Stop and go being sure to tag it as a Control point This point is called 0173 and ...

Страница 79: ...io for using the New Point method of initialization is when the kinematic base must be positioned away from the project site where the kinematic rover will be operating For example you need to perform your survey based on a control point located off the project site In such a situation you have two options The first is to set up the kinematic base on the remote control site and initialize your kin...

Страница 80: ...30 The Survey screen provides the opportunity to perform receiver and survey setup functions prior to beginning survey data collection If you select Setup you will be presented with the Survey Menu from which parameters are set Selecting Collect Data will begin the data collection process Figure 3 29 Mode Screen Figure 3 30 Survey Screen ...

Страница 81: ...m the Survey screen With Setup highlighted press ENTER to bring up the Survey Menu Figure 3 31 The Survey Menu provides you access to receiver and survey setup functions You may wish to exercise some of these functions prior to beginning data collection 4 From the Survey Menu select Survey Mode Set the mode to Static 5 From the Survey Menu select Point Attribute Enter attribute information for the...

Страница 82: ...lection session An optional 20 character narrative description of this point To enter point attribute information highlight the field to be changed and press the ENTER button Change the values to those desired Select Save when you are finished to return to the Survey Menu Refer to the description of the Point Attribute Static screen page 112 for further details regarding this screen 6 From the Sur...

Страница 83: ...f you are measuring the antenna height to the bottom of the GPS antenna Enter the measured antenna height value Change the units of measure by selecting Units from the Survey Menu page 47 8 From the Survey Menu select File Manager Delete old data files if more memory is required to complete this observation session With File Manager highlighted press ENTER to bring up the File Manager screen Figur...

Страница 84: ...es that the file has been downloaded from the receiver Use the up down arrows to select the file to be deleted Use the left right arrows to select Delete or Del All When Delete is selected only the selected file is deleted When Del All is selected all saved files are deleted Press the ESC button when you are finished with this screen to return to the Survey Menu Refer to the File Manager screen in...

Страница 85: ...s of measure the Observation Timer utilizes Press Enter to access the selection list of units Highlight the desired selection and press Enter again Select Save to return to the Survey Menu 10 From the Survey Menu select Receiver ID Change the ID if the current entry is not the desired one With Receiver ID highlighted press ENTER to bring up the Receiver ID screen Figure 3 36 Figure 3 35 Unit of Me...

Страница 86: ... name causing problems when the data is downloaded to the same location on the office computer for processing Press Enter to edit the receiver ID Change the ID to the desired value After entry of the desired ID select Save to return to the Survey Menu Refer to the Receiver ID screen in Chapter 4 page 126 for further details regarding this screen 11 From the Survey Menu select Contrast Change the c...

Страница 87: ...reen Use the left right arrows to adjust the contrast Press the ENTER button when finished to return to the Survey Menu 12 Press the Esc button to exit the Survey Menu All setup functions have been examined and set Press the Esc button to close the Survey Menu and return to the Survey screen repeated in Figure 3 38 Figure 3 37 Contrast Screen ...

Страница 88: ...ollection The remaining steps will present how to start the data collection process and how to monitor the progress of your survey 13 From the Survey screen select Collect Data With Collect Data highlighted press ENTER to bring up the Satellite Status screen Figure 3 39 Figure 3 38 Survey Screen ...

Страница 89: ... two status indicators power on the left and memory on the right The memory status indicator shows both graphically and numerically the percentage of memory free for data storage Once data storage begins the percent number will flash giving a visual cue that data collection has begun The power status indicator shows a fuel gauge like graphic of remaining power when internal batteries are in use If...

Страница 90: ...his determination the observation timer takes into account the number of satellites observed during the observation session the geometry of the satellites PDOP and breaks in the continuous tracking of the satellites caused by obstructions Using this information the observation timer informs you when enough data has been collected for different distances between you and other receivers simultaneous...

Страница 91: ...rea collect a little extra data to ensure the processing will go smoothly Elapsed Time The Elapsed Time field displays the amount of time since data storage began for the current observation session As you become more experienced with the system you will get a feel for the amount of time required to collect data under different observation conditions Sats The Sats field displays the current number...

Страница 92: ...ou are satisfied that enough data has been collected by all the GPS receivers currently collecting data in this observation session simply turn off the receiver to end the session Note To avoid possible damage to the external antenna connector unplug the external antenna cable from the receiver prior to removing the receiver from the cradle Also note that if the receiver ID is changed while collec...

Страница 93: ...mode must be selected prior to starting the survey The following steps refer to the setup for stop and go operation 1 Turn on the ProMark2 receiver by pressing the red on off button on the face of the receiver The opening screen appears followed by the Mode screen Figure 3 41 2 Select Survey from the Mode screen Figure 3 41 Mode Screen ...

Страница 94: ...which parameters are set Selecting Collect Data will begin the data collection process Steps 3 9 below cover receiver and survey setup functions prior to the start of actual data storage You will not need to access all of these functions each time you perform a survey since some items such as selection of units and receiver ID will remain the same for most surveys 3 Select Setup from the Survey sc...

Страница 95: ...Set the mode to Stop and Go 5 From the Survey Menu select Point Attribute Enter attribute information for the point you are about to survey With Point Attribute highlighted press Enter to bring up the Point Attribute screen Figure 3 44 Figure 3 43 Survey Menu Figure 3 44 Point Attribute Screen ...

Страница 96: ...n optional control point setting Set to Yes if the point is a control point The site ID is copied to the known site ID table A unique aspect and an absolutely essential step for a successful stop and go survey is the initialization process The stop and go rover must be initialized prior to surveying any points The initialization can be an observation on the initialization bar a known point or a ne...

Страница 97: ...ess the ENTER button Change the values to those desired Select Save when you are finished to return to the Survey Menu Refer to the description of the Point Attribute Stop and go screen page page 114 for further details regarding this screen 6 From the Survey Menu select Recording Interval see also page 120 Set the recording interval to 1 or 2 seconds and be sure to match this interval in the Rove...

Страница 98: ...suring the antenna height to the bottom of the GPS antenna Enter the measured antenna height value Change the units of measure by selecting Units from the Survey Menu page 110 8 From the Survey Menu select File Manager Delete old data files if more memory is required to complete this observation session With File Manager highlighted press ENTER to bring up the File Manager screen Figure 3 48 Figur...

Страница 99: ...eiver Indicates that the file has been downloaded from the receiver Use the up down arrows to select the file to be deleted Use the left right arrows to select Delete or Del All When Delete is selected only the selected file is deleted When Del All is selected all saved files are deleted Press the ESC button when you are finished with this screen to return to the Survey Menu Refer to the File Mana...

Страница 100: ...the Observation Timer utilizes Press Enter to access the selection list of units Highlight the desired selection and press Enter again Select Save to return to the Survey Menu 10 From the Survey Menu select Receiver ID Change the ID if the current entry is not the desired one With Receiver ID highlighted press ENTER to bring up the Receiver ID screen Figure 3 50 Figure 3 49 Unit of Measure Screen ...

Страница 101: ...survey Otherwise raw data files will be given the same name causing problems when the data is downloaded to the same location on the office computer for processing Press Enter to edit the receiver ID Change the ID to the desired value After entry of the desired ID select Save to return to the Survey Menu Refer to the Receiver ID screen in Chapter 4 page 126 for further details regarding this scree...

Страница 102: ... contrast of the receiver screen Use the left right arrows to adjust the contrast Press the ENTER button when finished to return to the Survey Menu 12 Press the Esc button to exit the Survey Menu All setup functions have been examined and set Press the Esc button to close the Survey Menu and return to the Survey screen repeated in Figure 3 52 Figure 3 51 Contrast Screen ...

Страница 103: ... begin data collection The remaining steps will present how to start the data collection process and how to monitor the progress of your survey 13 From the Survey screen select Collect Data With Collect Data highlighted press ENTER to bring up the Satellite Status screen Figure 3 53 Figure 3 52 Survey Screen ...

Страница 104: ...ata logging starts Switching back between the Satellite Status and Survey Status screens will not interrupt data collection At the bottom of the Satellite Status screen are two status indicators power on the left and memory on the right The memory status indicator shows both graphically and numerically the percentage of memory free for data storage Once data storage begins the percent number will ...

Страница 105: ...plays the current number of healthy satellites above a 10 degree elevation being logged into memory Periods of low satellite number will require more data to be collected for a successful observation This can be a good indicator of the effect of obstructions at the survey site at any given time during data collection PDOP the PDOP field displays the PDOP value at any given time computed from all o...

Страница 106: ... Point Attribute screen 17 Turn off the receiver when finished When you have collected the desired data simply turn off the receiver to end the session Note To avoid possible damage to the external antenna connector unplug the external antenna cable from the receiver prior to removing the receiver from the cradle Follow the steps presented above to complete your survey After data collection is com...

Страница 107: ...ey The following steps refer to the setup for the kinematic rover mode of operation 1 Turn on the ProMark2 receiver by pressing the red on off button on the face of the receiver The opening screen appears followed by the Mode screen Figure 3 55 2 Select Survey from the Mode screen With Survey highlighted press Enter to bring up the Survey screen Figure 3 56 Figure 3 55 Mode Screen ...

Страница 108: ...ect Data will begin the data collection process Steps 3 9 below cover receiver and survey setup functions prior to the start of actual data storage You will not need to access all of these functions each time you perform a survey since some items such as selection of units and receiver ID will remain the same for most surveys 3 Select Setup from the Survey screen With Setup highlighted press ENTER...

Страница 109: ...e of these functions prior to beginning data collection 4 From the Survey Menu select Survey Mode Set the mode to Kinematic 5 From the Survey Menu select Point Attribute Enter attribute information for the point you are about to survey With Point Attribute highlighted press Enter to bring up the Point Attribute screen Figure 3 58 Figure 3 57 Survey Menu ...

Страница 110: ...either no initialization or an initialization bar point or initialize as a known point A unique aspect and an absolutely essential step for a successful kinematic survey is the initialization process The kinematic rover must be initialized prior to surveying any points The initialization must be an observation on the initialization bar or over a known point The following example is an initializati...

Страница 111: ...Site has been set to the default 300 seconds 5 minutes To enter additional point attribute information such as a site description highlight the field to be changed and press the ENTER button Change the values to those desired Select Save when you are finished to return to the Survey Menu Figure 3 59 Init Mode Screen Figure 3 60 Point Attribute Screen ...

Страница 112: ...y Menu select Recording Interval see also page 120 Set the recording interval to 1 or 2 seconds and be sure to match this interval in the Rover receiver 7 From the Survey Menu select Antenna Set the antenna height parameters for this point Select Slant if you are measuring the antenna height to the outside edge of the GPS antenna or Vertical if you are measuring the antenna height to the bottom of...

Страница 113: ...from the receiver Indicates that the file has been downloaded from the receiver Use the up down arrows to select the file to be deleted Use the left right arrows to select Delete or Del All When Delete is selected only the selected file is deleted When Del All is selected all saved files are deleted Press the ESC button when you are finished with this screen to return to the Survey Menu Refer to t...

Страница 114: ...easure the Observation Timer utilizes Press Enter to access the selection list of units Highlight the desired selection and press Enter again Select Save to return to the Survey Menu 10 From the Survey Menu select Receiver ID Change the ID if the current entry is not the desired one With Receiver ID highlighted press ENTER to bring up the Receiver ID screen Figure 3 64 Figure 3 63 Unit of Measure ...

Страница 115: ...given the same name causing problems when the data is downloaded to the same location on the office computer for processing Press Enter to edit the receiver ID Change the ID to the desired value After entry of the desired ID select Save to return to the Survey Menu Refer to the Receiver ID screen in Chapter 4 page 126 for further details regarding this screen 11 From the Survey Menu select Contras...

Страница 116: ...left right arrows to adjust the contrast Press the ENTER button when finished to return to the Survey Menu 12 Press the Esc button to exit the Survey Menu All setup functions have been examined and set Press the Esc button to close the Survey Menu and return to the Survey screen repeated in Figure 3 66 Figure 3 65 Contrast Screen ...

Страница 117: ...o begin data collection The remaining steps will present how to start the data collection process and how to monitor the progress of your survey 13 From the Survey screen select Collect Data With Collect Data highlighted press ENTER to bring up the Satellite Status screen Figure 3 67 Figure 3 66 Survey Screen ...

Страница 118: ...ndicators power on the left and memory on the right The memory status indicator shows both graphically and numerically the percentage of memory free for data storage Once data storage begins the percent number will flash giving a visual cue that data collection has begun The power status indicator shows a fuel gauge like graphic of remaining power when internal batteries are in use If an external ...

Страница 119: ... data to be collected for a successful observation This can be a good indicator of the effect of obstructions at the survey site at any given time during data collection PDOP The PDOP field displays the PDOP value at any given time computed from all observed healthy satellites above a 10 elevation Periods of high PDOP will require more data to be collected for a successful observation This can be ...

Страница 120: ...data collection session by pressing ENTER 17 Turn off the receiver when finished When you have collected the desired data simply turn off the receiver to end the session Note To avoid possible damage to the external antenna connector unplug the external antenna cable from the receiver prior to removing the receiver from the cradle Follow the steps presented above to complete your survey After data...

Страница 121: ...na 2 Low battery 3 Extreme low power 4 Low memory 5 Kinematic Page 125 128 Navigate Setup Collect Data Satellite Status Screen Page 122 Survey Status Screens Pages 116 120 Active Site ID Obs Timer Elapsed Time Sats PDOP Power Status Memory Status NAV SURV button toggles Satellite Status and Survey Status Screens Contrast Contrast Screen Page 115 MENU button activates the SURVEY MENU screen Navigat...

Страница 122: ... Enter key is pressed this will take you immediately to the Mode screen Figure 4 6 The Mode screen lets you select navigation mode or survey mode Navigation mode is described in detail in the Map330 User Manual supplied with ProMark 2 Survey mode is described elsewhere in this manual Selecting Survey in the Mode screen calls the Survey screen page 109 Figure 4 2 Promark 2 Opening Screen Figure 4 3...

Страница 123: ...in an office environment You can also enter point attribute information for the point you are about to survey prior to beginning data collection but this is not required since point attribute information can be entered at any time during the data collection process The Survey screen is accessed by selecting Survey from the Mode screen Table 4 1 describes the survey screen selections Figure 4 4 Sur...

Страница 124: ...rom the Survey Status screen or the Satellite Status screen Table 4 2 describes the selections in the Survey Menu Figure 4 5 Survey Menu Screen Table 4 2 Survey Menu Screen Selections Parameter Description Survey Mode Calls the Survey Mode screen page 111 Point Attribute Calls the Point Attribute screen page 111 Recording Interval Calls the Recording Interval screen page 120 Antenna Calls the Ante...

Страница 125: ... Parameters Parameter Description Survey Mode Lets you set the survey mode Static Stop and Go and Kinematic are the available options Default is Static Note The survey mode selected will be saved after a power cycle Save Saves settings Note The Survey Mode cannot be changed after selecting Collect Data in the Survey Menu The receiver will perform only the survey mode that is currently set The rece...

Страница 126: ... enter and save site ID and site description information when in Static mode Table 4 4 describes the screen parameters Figure 4 7 Point Attribute Static Screen Table 4 4 Point Attribute Static Screen Parameters Parameter Description Site ID Lets you enter a 4 character alphanumeric site ID If fewer than 4 characters are entered the empty fields will be automatically filled with dashes Valid charac...

Страница 127: ...hich will display the default value Note Site description information is shared by the three different modes of operation So site description entries added edited or deleted in static stop and go or kinematic mode will be reflected when in the other modes Table 4 4 Point Attribute Static Screen Parameters continued Parameter Description ...

Страница 128: ...u enter the occupation time on site in seconds The receiver will count down the seconds during data collection The valid range is 1 9999 The default setting is 10 seconds If initializing on a bar the default setting is 300 seconds Note If time on site is less then the recording interval the value is not accepted and the time on site field will display the recording interval value Site Description ...

Страница 129: ... set will be saved with the exception of the Initialize setting return to None and Control setting return to No Note Site description information is shared by the three different modes of operation So site description entries added edited or deleted in any of the survey modes of operation will reflect when in the other modes Note Site ID information is shared by the stop and go and kinematic modes...

Страница 130: ...cters edit a descriptor and delete a descriptor The default is blank Initialize Calls the Init Mode screen where you can set the occupation as an initialization point on an initializer bar or a known point Set to None if no initialization is desired If the initializer bar or known point is selected the Time on Site field will be displayed beside the site ID Default time on site for bar is 300 seco...

Страница 131: ...tered and occupied with the control tag set to Yes Table 4 7 describes the Site ID screen parameters Figure 4 10 Site ID Screen Table 4 7 Site ID Screen Parameters Parameter Description CT23 etc A list of the site IDs including associated site descriptors set as control during previous point occupations These are known initialization points The table allows up to 50 known points With 50 points the...

Страница 132: ...n parameters Figure 4 11 Site Descriptor Screen Table 4 8 Site Descriptor Screen Parameters Parameter Description Save Saves the data entry sets the highlighted descriptor in the Site Descriptor field in the Point Attribute screen and returns the program to the Point Attribute screen New Calls the Description Edit screen where you can enter a descriptor up to 20 characters in length This field is ...

Страница 133: ...upation to kinematic bar The post processing software will detect the point as an initialization point Known Sets the initialization tag for the point occupation to known point The post processing software will detect the point as an initialization point Bar and Known are available during a stop and go and kinematic data collection mode Known is available after a point has been tagged as Control P...

Страница 134: ...onds Table 4 10 describes the recording interval screen parameters Figure 4 13 Recording Interval Screen Table 4 10 Recording Interval Screen Parameters Parameter Description Seconds Calls the Recording Interval List screen page 121 The range is 1 to 120 seconds Default is 10 Save Saves settings Note The parameter is saved after a power cycle ...

Страница 135: ...l List Screen Table 4 11 Recording Interval List Screen Parameters Parameter Description 2 Sec Sets the receiver recording interval to 2 seconds 5 Sec Sets the receiver recording interval to 5 seconds 10 Sec Sets the receiver recording interval to 10 seconds 15 Sec Sets the receiver recording interval to 15 seconds 20 Sec Sets the receiver recording interval to 20 seconds Other Sets the Interval f...

Страница 136: ...ant or Vertical Default is Slant Antenna Height Lets you enter the antenna height in the units that are set in the Unit of Measure screen page 125 To change antenna height the button sequence is as follows First use the up down arrows to highlight the Antenna Height data field Then press ENTER to go into edit mode Now use the up down arrows to move to a different digit After setting all digits pre...

Страница 137: ... stored in the receiver at one time Files are automatically closed when the receiver is turned off Each file has a symbol associated with it with the following meanings Indicates that this file is the current file into which data is being recorded Indicates that the file has not yet been downloaded from the receiver Indicates that the file has been downloaded from the receiver Detail Map A detaile...

Страница 138: ...ncrementing scheme R1234A01 175 R1234Z01 175 R1234AA1 175 R1234AZ1 175 R1234AB1 175 R1234ZZ1 175 Esc Returns screen to Survey Menu Lower pane of display Information on highlighted file indicating name and size Also displays amount of free memory available for data storage Figure 4 17 File Naming Convention for Survey Data Files Table 4 13 File Manager Screen Parameters continued Parameter Descript...

Страница 139: ...vey Status screen The Unit of Measure Screen accessed by selecting Units in the Survey Menu displays the currently selected unit of measure Table 4 14 describes the selectable parameters Note The setting of Unit of Measure is saved after a power cycle Figure 4 18 Unit of Measure Screen Table 4 14 Unit of Measure Screen Parameters Parameter Description Units As shown in the figure this is the curre...

Страница 140: ...h similar file names when the files from multiple receivers are downloaded to the same directory in the office computer The Receiver ID screen is accessed by selecting Receiver ID in the Survey Menu Table 4 15 describes the screen parameters Note The receiver ID is saved after a power cycle Figure 4 19 Receiver ID Screen Table 4 15 Receiver ID Screen Parameters Parameter Description Receiver ID A ...

Страница 141: ... Contrast Screen The Contrast screen Figure 4 20 is accessed from the Survey menu page 110 The Contrast screen lets you adjust the screen contrast using the left and right arrows Press the ENTER key to exit the screen Figure 4 20 Contrast Screen ...

Страница 142: ...on the quality of the data being collected and provide you with receiver operational status information such as battery life and remaining memory The Survey Status screen is accessed by pressing the Nav Surv button when viewing the Satellite Status screen the Nav Surv button toggles back and forth between the Survey Status and Satellite Status screens Figure 4 21 Survey Status Static Screen Table ...

Страница 143: ...etween this receiver and any other receiver simultaneously collecting data within 20 KM 12 MI of this receiver Elapsed The Elapsed field displays the amount of time since data storage began for the current observation session Sats The Sats field displays the current number of healthy satellites above 10 degrees elevation being logged into memory PDOP The PDOP field displays the PDOP value at any g...

Страница 144: ... pressing the Nav Surv button when viewing the Satellite Status screen the Nav Surv button and the ESC button toggle back and forth between the Survey Status and Satellite Status screens Table 4 17 describes the screen parameters Figure 4 22 Survey Status Stop and go Screen Table 4 17 Survey Status Stop and go Screen Parameters Parameter Description Site ID The Site ID field displays the current s...

Страница 145: ...eo when the Remain field counts down to 00 00 00 Power status indication The power status indicator battery or power plug icon in lower left corner of display provides a graphical representation of battery life remaining If an external power source is being used the status indicator displays an icon resembling the plug on an electric extension cord Memory status indication The memory status indica...

Страница 146: ...accessed by pressing the Nav Surv button when viewing the Satellite Status screen the Nav Surv button and the ESC button toggle back and forth between the Survey Status and Satellite Status screens Table 4 18 describes the screen parameters Figure 4 23 Survey Status Kinematic Screen Table 4 18 Survey Status Kinematic Screen Parameters Parameter Description Site ID The Site ID field displays the cu...

Страница 147: ...ction Power status indication The power status indicator battery or power plug icon in lower left corner of display provides a graphical representation of battery life remaining If an external power source is being used the status indicator displays an icon resembling the plug on an electric extension cord Memory status indication The memory status indicator box with percent sign in lower right co...

Страница 148: ...en Table 4 19 Satellite Status Screen Parameters Parameter Description Sky plot The sky plot displays the position of satellites available for tracking The outer ring represents the horizon The middle ring represents 60 degrees elevation The center of the plot is directly overhead When a satellite is locked and being tracked its number is changed to white in a black box Signal strength graph The s...

Страница 149: ...percent sign in lower right corner of display provides a graphical and numerical indication of the percentage of memory available for storing data The numerical value blinks once every recording interval when data is being stored to memory Table 4 19 Satellite Status Screen Parameters Parameter Description ...

Страница 150: ...derive from the site ID site descriptor and receiver ID variables as shown in Figure 4 25 To change a parameter use the arrow keys to navigate around the keyboard When the character you want to enter or change is highlighted press ENTER Highlight OK and press ENTER when finished Figure 4 25 Edit Screens Site ID Site Descriptor Receiver ID ...

Страница 151: ... screen without an external antenna attached To rectify press ENTER to clear the alarm connect the external antenna and begin data collection During survey data collection the external antenna is disconnected Data storage stops until the external antenna is reconnected To rectify reconnect the external antenna and press ENTER to clear the alarm Low Battery The Low Battery alarm Figure 4 27 appears...

Страница 152: ... Extreme Low Power alarm Figure 4 28 appears when the receiver feels it can no longer guarantee continued uninterrupted operation At the appearance of this alarm the receiver closes the active survey data file and shuts down after 10 seconds Figure 4 27 Low Battery Alarm Figure 4 28 Extreme Low Power Alarm ...

Страница 153: ...ry alarm Figure 4 29 appears when remaining memory for survey data storage is 5 or less If you close the Low Memory alarm screen by pressing the ENTER key the alarm will not appear again unless you turn off the receiver and turn it back on Figure 4 29 Low Memory Alarm ...

Страница 154: ...vailable to maintain kinematic initialization When the alarm is active the Sats field in Survey Status continues to display the number of tracked satellites independent of data quality To maintain centimeter level accuracy you must reinitialize after the alarm appears To clear the alarm message press any key Figure 4 30 Kinematic Alarm ...

Страница 155: ...en Figure 4 31 appears when the Power button is pressed momentarily during operation When this screen appears the ProMark2 will turn itself off in 5 seconds or you can abort the power down by pressing the Esc key Figure 4 31 Power Down Screen ...

Страница 156: ...142 ProMark2 User s Guide ...

Страница 157: ...ion fix 29 G GPS vector 36 H healthy satellites 54 56 75 77 105 HI 44 HI recording errors 44 HI tape 44 horizontal control points 33 I instrument height 44 internal memory 1 6 intervisible points 31 34 K known point initialization 117 L large surveys 40 line of sight 34 40 link 35 losing data 28 low temperature operation 26 M MAP330 7 maps 6 MapSend Streets CD 123 memory free 54 75 124 remaining 1...

Страница 158: ...26 report formats 2 S satellite availability 37 38 54 75 cut off angle 38 distribution 37 geometry 15 20 38 satellite availability 38 satellites healthy 129 selection of units 47 67 80 94 serial data cable 1 site ID 24 48 68 112 128 strong loops 34 suitablility of site 54 75 T time since storage began 56 77 total station 32 33 41 tracking 54 75 traverse legs 34 traverse plan 33 V vertical control ...

Страница 159: ......

Страница 160: ...6 10 6566 0246 European Headquarters Carquefou France 33 2 28 09 38 00 Fax 33 2 28 09 39 39 Email professionalsalesemea thalesnavigation com In Germany 49 81 6564 7930 Fax 49 81 6564 7950 In Russia 7 095 956 5400 Fax 7 095 956 5360 In UK 44 870 601 0000 Fax 44 208 391 1672 In the Netherlands 31 78 61 57 988 Fax 31 78 61 52 027 Web site www thalesnavigation com P N 630860 01C 2004 Thales Navigation...

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