Radar Systems Prism2 Скачать руководство пользователя страница 4

Страница: 4 / 65

2. Brief Description of Georadar

Georadar is quite a sophisticated engineering device. Below, its simplified structural

schematic is presented, which allows getting a general idea of its principle of operation but does
not reflect its complexity.

Fig. 2.1. Simplified structural schematic of Georadar.

The transmitter sends extremely short electric pulses exciting the antenna. The transmitting

antenna radiates ultra-wideband one-and-half-period electromagnetic waves, their approximate
shape is shown in Fig. 2.2.

GPS

Target

Surface

Antenna

Georadar

Receiver

Transmitter

Synchronizer

Stroboscopic

converter

Содержание Prism2

Страница 1: ...Version 2 60 User s Manual Riga 2017 ...

Страница 2: ...it 8 7 Functions of Menu Options 16 8 Adjustment of Georadar 22 9 Radiolocation Sounding Run 27 10 Radiolocation Sounding Data File Handling 29 12 How to import Zond GPR data files from Prism to Voxler 46 13 Our Recommendations 49 14 Radiolocation Sounding Data Format 50 14 1 SEG Y Sounding Data Format 50 15 Solving Problem of Layer by Layer Determination of Groung Thickness and Permittivity by CD...

Страница 3: ...ta processing and interpretation Important to work with Zond 12e and or Python Georadar computer must be equipped with Ethernet card 10 100 BaseT For wireless connection computer must be equipped with Wi Fi card The tasks of Package include 1 Control of all Georadar modes and adjustment of its parameters for specific job conditions 2 Receiving digital data from Georadar in a radiolocation sounding...

Страница 4: ...ation but does not reflect its complexity Fig 2 1 Simplified structural schematic of Georadar The transmitter sends extremely short electric pulses exciting the antenna The transmitting antenna radiates ultra wideband one and half period electromagnetic waves their approximate shape is shown in Fig 2 2 GPS Target Surface Antenna Antenna Georadar Receiver Transmitter Synchronizer Stroboscopic conve...

Страница 5: ...ccurrence in the medium Fig 2 3 Example of received signal Transmitter pulse is clearly visible to the left Passing process shown in Fig 2 3 is very fast and takes tens to hundreds of nanoseconds which in technical terms makes him very difficult to process Therefore stroboscopic converter is used to expand this process in time Synchronizer is used for controlling all Georadar assemblies operation ...

Страница 6: ...in Section 10 of the present User s Manual It is a rather important parameter which must be considered when measuring the time delays of signals to determine target s depth in the sounding medium Zero point location examples are shown in Figs 4 1 4 2 4 3 5 Wiggle plot Way of profile display where traces are running vertically with some spacing between them Drawing of each trace is made by a curve ...

Страница 7: ... profile display example black and white and color scales Fig 4 3 Density profile display example black and white and color scales Note Our experience shows that usually the most informative sounding data display type is the density profile in the black and white scale see Fig 4 3 left side ...

Страница 8: ...vanced GPRs or if you for any reason have changed the Local Area Connection settings you will have to manually configure them to be able to connect to the Zond 12 GPR To do so you need For Windows XP 1 Click the Start button point to Settings and then click Control Panel 2 Double click the Network connections icon 3 Double click your Local Area Connection icon and then click Properties button 4 Se...

Страница 9: ...em Properties of the pop up menu 5 Select Internet Protocol Version 4 TCP IPv4 and click the Properties button 6 For GPRs manufactured after 2015 click the Obtain an IP address automatically option and continue from the point 10 7 For GPRs manufactured before 2015 click the Use the following IP address option 8 Click the IP Address box and enter 192 168 0 2 if this address is occupied or is not ac...

Страница 10: ...nter 255 255 255 0 9 Press OK button 10 Press OK button 11 Click the right button of mouse on your wireless Wi Fi connection and then click Connect button 12 Select Zond 12e or Python network and click the Connect button 13 If you are using factory deffault Wi Fi access point settings then follow to the next point otherwise chose the secutity method for Wi Fi connection end enter pass code if need...

Страница 11: ...d after 2015 click the Obtain an IP address automatically option and continue from the point 10 7 For GPRs manufactured before 2015 click the Use the following IP address option 8 Click the IP Address box and enter 192 168 0 2 if this address is occupied or is not accessible you could use any address from 192 168 0 2 to 192 168 0 254 except occupied address 192 168 0 10 Please consult with your ne...

Страница 12: ...ista 7 Click the Start button and then click on the Control Panel For Windows 8 8 1 10 Right click on bottom left corner on your Desktop and then press Control Panel 2 Chose the item Power Options 3 Follow the link Change plan settings Fig 5 2 4 Follow the link Change advanced power settings 5 Find and collapse item Wireless Adapter Settings and subitem Power Saving Mode 6 Chose value Maximum Perf...

Страница 13: ...vanced settings dialog Note 1 In some cases your portable device may have unsatisfactory connection even with power setting set to maximum performance In this case you should use external Wi Fi USB adapter We advise to use NETGEAR N150 Wireless USB Micro Adapter ...

Страница 14: ...ct with our customer support before you try to change any of GPR s Wireless network settings For earlier versions of GPRs has less complex network device in Appendix B you can find how to change some of their settings Note 3 While connecting to your GPR via cable on some computers you will have to disconnect from any Wi Fi connection or disable Wireless Network Connection on your device completely...

Страница 15: ...ethod allows entering of manually measured length of the passed track when you save the data to hard drive or by using Output parameters menu see Section 10 below For the Wheel positioning you have to enter following parameters the wheel s diameter the number of pulses per revolution and trace spacing dX or to calibrate the wheel by moving on the precisely measured distance To calibrate the wheel ...

Страница 16: ...lobal positioning system like GPS you are to choose the receiver providing digital output of coordinates in format NMEA 0183 Version 1 5 or higher Connection to computer is possible via COM port including Bluetooth or USB if it is defined in computer as COM port after installation In case of use of GPS there will be recorded in the heading of each trace current latitude and longitude which are fur...

Страница 17: ...e handling operations and printout Open using this option you may select a proper file and have it displayed on the screen by typing its file name in File name line or choosing a proper file in the list and load it by pressing button Open In needs of opening more than one file at once please select them beforehand with the right mouse button click At the same time this option offers some other sta...

Страница 18: ...files combining opens Profiles Combining Wizard that helps to combine all selected profiles into the one profile Profiles splitting opens Profiles Splitting Wizard that helps to split selected profile to the several profiles Profiles 3D aligning aligning of parallel profiles acquired for 3D imaging in Easy Prism 3D or Voxler 3D software Print Profile printout in one of the views supported by the s...

Страница 19: ...on at the upper right corner of application window or by simultaneous pressing Alt F4 buttons If there are any unsaved files you will have to answer relevant questions to confirm your exit 7 2 View application options determining the appearance features of the software Show toolbar display or not the Toolbar in the upper part of the application main window Show processing toolbar display or not th...

Страница 20: ...t of values for the following parameters measured Position Depth Time delay Permittivity Velocity Zoom in selected area magnification Zoom out reverse Zoom in operation Fit profile fitting of the whole profile in one window Average spectrum average signals spectrum calculation in a selected area before its amplification or after they have been gained Trace inspection this option is showing separat...

Страница 21: ...al system errors etc Environment options changes data acquisition menu appearance Color setting Black White or Colored buttons in data acquisition menu OFF computer on exit if this option is ON anytime when leaving data acquisition menu you can simultaneously switch off the computer Introduction on start upon entry disables or enables colored introduction on the data acquisition menu screen Introd...

Страница 22: ...tartup turning automatic updates checking on off at application startup Check for updates run Prism2 Updater application Version History history of application versions About information about the application version developer ...

Страница 23: ...led see 7 4 This is made specifically for convenient use of the computer in the field condition In the Data Acquisition dialog box use keys and to select Setup and press Enter or Space Note When Georadar is being switched ON all of its parameters are in random positions When the Georadar Adjustment dialog box is entered Prism2 sets all Georadar parameters in some definite stored position Therefore...

Страница 24: ...s which will be added together in the course of sounding Stacking contributes to suppression of noise and interference and to increase of the depth rating However it should be remembered that stacking decreases the trace arrival velocity times the number of stacking and it may necessitate the antenna moving velocity to be decreased with the objective of information loss avoidance If the parameter ...

Страница 25: ...tenna connected to channel 1 and received by the antenna connected to channel 2 This mode is applied when making measurements applying the method CDP and also in case of using of the dipole antenna 38 75 150 MHz o Tx 2 Rx 1 In Zond 12e Advanced only single channel mode for operation when the signal is radiated by the antenna connected to channel 2 and received by the antenna connected to channel 1...

Страница 26: ...e not filtered Filtering the same as a Gain function is just a software tool and is used for data visualization We recommend using Customized High Pass Filter only if you are familiar with the spectrum analysis and the digital signal processing Otherwise we recommend using Weak Strong and Super Strong filters by following recommendations Real time filter real time filter selection to remove backgr...

Страница 27: ... All Georadar adjustment parameters shall be saved and stored by the software in special purpose file z12c_td dat Here all parameters for every antenna types shall be stored If you ve made any modifications in the parameters the parameters will be saved once adjustment is completed These parameters will be used in next runs of the software Below you ll see examples of successful and unsuccessful a...

Страница 28: ...ced When the battery level is too low warning message appears on the screen Bear in mind that using positioning by weal data acquisition is performed only when the wheel is rotating When the weal stops data acquisition will be stopped as well Once data acquisition is started Stop Mark and Pause control buttons become accessible and Mark button will be automatically selected Without selecting any o...

Страница 29: ...r Space The software will pause the process and generate audio signal Paused When you will be ready to continue simply select Continue or Mark options and press Enter or Space activating Mark will not only resume the process but also place the marker at the last trace before you stopped ...

Страница 30: ...file Output working window A radiolocation profile is provided with horizontal and vertical scales vertical scale can be moved for zero point adjustment see Subsection 3 4 To set a zero point draw the cursor at the white field to the left of the profile the cursor will take the form of a double arrow now when you press and hold the left mouse button move your mouse up and down to move the scale so...

Страница 31: ...tion to the all currently opened profiles by pressing button If you need higher gaining the common maximum gain is 84 dB up to 168 dB you could turn on Double Gain option by pressing button or choose Tools Gain Function Double Gain menu item of Main menu There is a possibility to built in gain function to the raw data of the profile by pressing button or choose Tools Gain Function Built in Gain Fu...

Страница 32: ...on Here you could also chose to display profile as a combined Line scan Wiggle plot view Application tools used when working with sounding data files are described below they are located in Tools option menu and duplicated as a toolbar buttons Fig 7 1 Point info parameter values output Trace number Position Sample number Time delay Depth specified profile s point Amplitude Latitude Longitude and A...

Страница 33: ...be changed by pressing right mouse button position the cursor on the signal s hyperbola branch and press the right mouse button For more accurate hyperbolas matching we recommend to use Zoom in on the Main menu see below and make several iterations Matching hyperbolas example is shown in Fig 10 3 Theoretical hyperbola s line color may be changed in Tools Lines color drop down menu Fig 10 3 Hyperbo...

Страница 34: ...le to the window size Average spectrum module of average spectrum calculation of selected area Used for signal spectral characteristics and interference analysis when choosing bandwidth and suppression frequencies filters Ormsby bandpass and Notch filter Fig 10 4 Spectrum Output dialog box with different amplitude scale units in times in dB There are different options for Spectrum calculation and ...

Страница 35: ...ng button Apply or Apply To All Pulse delay adjustment profile time axis position adjustment Moving the mouse while pressing and holding left mouse button will move time axis line to your desired position on vertical axis Releasing left mouse button will move profile to the new position according to the new first lobe of the sounding signal GPS Tracker opens GPS tracker window which displays profi...

Страница 36: ...lick by left mouse button each vertex point of expected zigzag line if you would like to use an arrow you need to click only two points start and stop when you are done press right mouse button to confirm If you wish to save created line as ASCII file select it and press the right mouse button in appeared dropdown menu select Save as ASCII file option Enter file name and press save button As defau...

Страница 37: ...rked outline portion of an existing area after you place the third point now you can finish drawing adjacent area with any additional points Fig 10 7 a Dialogue Box for Area Fig 10 7 b Dialogue Box for Area Tuning with Tuning Pattern Selection o Pipe is used for symbolic display of the cross section of a pipe or a cable on the profile After selecting this option press and hold left mouse button an...

Страница 38: ...on o Close exit from the annotations mode Color palette color palette editing Any color from 24 bit palette is available in Prism2 Color palette is used for data output in line scan mode Fig 10 1 as well for the positive half wave output when the wiggle plot mode is used Fig 4 2 You may use up to ten basic colors and their relative levels for the color palette You could open the palette window by ...

Страница 39: ...h trace so the sum of rows will be equal to number of all traces in the profile If specific trace has no coordinates the row will contain zeros GPS Coordinates Table window comprises Deg Degrees Lat Long DegMin Degrees Minutes DegMinSec Degrees Minutes Seconds and UTM Universal Transverse Mercator allows choosing from varies coordinate systems Import allows to import ASCII text file txt with coord...

Страница 40: ...39 Fig 10 8 Profile Parameters dialog box ...

Страница 41: ... If you unsatisfied with processing results or if you would like to change procedure parameters you can undo processing results selecting Processing Undo processing or by pressing button If you would like to redo data processing select option Processing redo processing or press button Each processing could be applied to the active profile or to all opened profiles by pressing on buttons Apply or A...

Страница 42: ...ilter acting along a trace Designed for low frequency interference and signal s high frequency components suppression The algorithm used here comprises three steps application of direct FFT fast Fourier transform for transition from the time domain into the frequency domain of low frequency and high frequency trace spectrum components suppression and application of reverse FFT for transition from ...

Страница 43: ...ond trace becomes next to last and so on This may be useful when any area is sounded by tacks i e the first profile is covered and then the second is made with an offset and in the opposite direction and so on For convenience of subsequent analysis and interpretation of sounding data the procedure may be used before each even or odd profile Topography is a procedure used to restructure a profile a...

Страница 44: ...d together in the average trace Stacking contributes to suppression of noise and interference and to increase of the depth rating However it should be remembered that stacking decreases the trace amount and horizontal resolution If the parameter is set to 1 no staking is performed Time depth conversion should be used for restructuring the initial time profile into a depth profile in compliance wit...

Страница 45: ...hanging Migration reconstruction of original shape of underground interface and local objects by its radiolocation profile Very effective when having diffracting objects underground utilities fixtures on the profile Software provide migration methods Stolt F K method and Hyperbolic summation Fig 11 8 Example of migration procedure using Left hand initial profile right hand resulting profile Envelo...

Страница 46: ...ne in Windows Procedures execution sequence goes from top to bottom Moving any procedure to the left will make it active and allow you to change its parameters when selecting left mouse click on the active procedure To change all available parameters for selected procedure open the Parameters tab located to the left of the Processing List tab Processing flow execution will start as soon as Ok butt...

Страница 47: ...ber of samples and traces To equalize profiles do please follow the menu File Profiles 3D aligning 2 The Voxler window consists of three separate areas Network Properties and visualization You can choose the menu File Import or click right mouse button in the Network area and then choose the item Import from popup menu to import GPR data files Fig 12 1 Voxler software 3 Please select SGY SEGY SEG ...

Страница 48: ...es like an array but Voxler represents it in the different objects and then imported profiles don t match in samples and or in traces check it in the Prism software and if necessary cut unmatched profiles 6 You have to be sure that all Geometry Limits of the imported data module are set properly to see it just left mouse click on the module and follow to the Properties area of Voxler window Geomet...

Страница 49: ...text menu 8 Each imported data module may have a lot of branches each Graphic Output Computational or General Module represents like child module of imported data module You can brake connect or disconnect these branches by drag n drop mouse action 9 Please try to play with different graphic outputs to understand how it works and visualize the imported data The best graphic output method of 3D cub...

Страница 50: ...inion black and white color scale is the most informative line scan profile displaying type see Example in Fig 4 3 left side It would provide clear visibility of the weak signals Always pay attention to the prompts and messages when you work with the software Before you start it is appropriate to make a separate directory for each particular GPR job see section 7 4 menu Radar Where to save Make fi...

Страница 51: ...in PICOseconds 3220 2 short int Number of samples per trace for this reel s data 3222 2 Unused 3224 2 short int Data sample format code 1 32 bit IBM floating point 2 32 bit fixed point integer 3 16 bit fixed point integer 4 16 bit fixed point with gain code integer 3226 2 short int CDP fold expected number of data traces per ensemble 3228 26 Unused 3254 2 short int Measuring system 1 meters 2 feet...

Страница 52: ...thin CDP ensemble 28 2 short int Trace identification code 1 seismic data 2 dead 3 dummy 4 time break 5 uphole 6 sweep 7 timing 8 water break 9 optional use 30 2 short int Number of vertically summed traces yielding this trace 32 2 short int Number of horizontally summed traces yielding this trace 34 2 short int Data use 1 production 2 test 36 4 Unused 40 4 float Altitude mean sea level 44 4 float...

Страница 53: ...nd recording start in PICOseconds 110 4 Unused 114 2 short int Number of samples in this trace 116 2 short int Sample interval of this reel s data in PICOseconds 118 42 Unused 160 2 short int Hour of day 24 hour clock 162 2 short int Minute of hour 164 2 short int Second of minute 166 2 short int Time basis code 1 Local 2 GMT 182 8 double Longitude in 64 bit double accuracy 190 8 double Latitude i...

Страница 54: ...in any point thereof in reality this is not always the rule as the most media are layered One of the best known methods used for layer by layer velocities determination is Common Depth Point method CDP or Common Mean Point method CMP The idea of this method is as follows over a selected point sounding is performed with both antennas being equally spaced apart to opposite sides of the original posi...

Страница 55: ...inished sounding and saved the file be sure to enter the initial and final antenna spacing in Output parameters To calculate medium characteristics wave velocity or permittivity by hodographs of the received signals activate Hodograph button in the Main menu or use Tools Mouse actions Hodograph menu option It will open the Hodograph dialog box Fig 14 2 Hodograph Taking dialog box 1 Using Model opt...

Страница 56: ... where the cross is positioned If it does not contradict with the truth press OK Otherwise you ve made a mistake when entering the initial and final spacing between the antennas 6 Enter the first layer interface To do that you have to activate button 1 in Enter layer section Note that interfaces are numbered from top to bottom An interface is entered by the several points in series from left to ri...

Страница 57: ...sent IP address of As default it is 192 168 0 10 4 Click the Unit settings button The Zond 12e Ethernet settings dialog box appears Note Please use the Connection troubleshooter if the error message appears Fig A2 Zond 12e connection settings dialog box 5 Enter the new desirable Control Unit IP address in the IP address section 6 Enter the new desirable Control Unit subnet mask in the Subnet mask ...

Страница 58: ...01 The Control Unit with IP address is unreachable Possible reasons What to do 1 Entered IP address is not correct Reenter IP address and try again your action 2 Computer is not configured Configure your computer according to p 8 of present User s Manual 3 Control Unit has unknown IP Reset default IP address 192 168 0 10 of the Control Unit according to p 55 of present User s Manual 4 Control Unit...

Страница 59: ...your local network administrator If you want to change the security mode of Wi Fi access point please use following steps 1 Run any internet browser all examples are based on Internet Explorer 10 here and below and use Wi Fi access point IP address as URL in address line 2 Use Zond12e as a login name and zond12e as a password 3 Press Wireless button on the WEB page 4 Chose menu item Security 5 Cho...

Страница 60: ...ww trendnet com asp download_manager inc_downloading asp iFile 17937 Starting from 2015 in Zond 12e serial numbers from 0537 GPR contains internal network router that is able to automatically configure Local Area Connection settings on your every version of Windows starting from Windows XP are configured to Obtain an IP address automatically ...

Страница 61: ... file and chose Run as administrator Application starts minimized creating tray icon User needs to configure it first to be able to use it There are two different configurations the first one is the Connection Setup and the second one is the Click Setup User has to run the Prism2 software and setup the Prism2 to work with PrismClicker before starting the Connection Setup Configuring the Prism2 Pri...

Страница 62: ...arted and configured the Prism2 Right click on the PrismClicker tray icon and chose Connection setup of its menu Fig C3 PrismClicker tray menu You have to choose the connection protocol serial COM port communication or TCP IP communication with the host computer which operating under the Prism2 software Configure communication protocol in Connection Setup window and press OK ...

Страница 63: ... in Prism2 Commands list The Set button has to be pressed after choosing the commands User is able to left click the necessary place of the third party software what is needed to be simulated after Press Setup dialog window closing Press Setup dialog window will appear allowing to setup other commands Each Prism2 command status is represented on the right part of the window It is possible to pin m...

Страница 64: ...t operating Prism2 and remote operating PrismClicker computers take a look on the part 5 2 for computers configuration of this manual for details if you are going to use manual TCP IP configuration remember that IP addresses cannot be the same for different devices PrismClicker automatically is trying to connect to the host computer at the start If the connection is not established application sho...

Страница 65: ...aiting your feedback with great pleasure If you found any difficulty using our equipment do not hesitate to contact us or our representatives by phone e mail or mail We cherish sincere hopes that the equipment manufactured by our company will help you to achieve success in your business Radar Systems Inc Darzauglu 1 105 Riga LV 1012 Latvia Phone Fax 371 67141041 E mail radsys radsys lv Web www rad...

Результаты поиска

Содержание Prism2

Отзывы:

Radar Systems Prism2, Руководство пользователя, Страница: 4 / 65

Результаты поиска

Содержание Prism2

Отзывы: