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iG5 User Manual

Getting ready to use OPUS

OPUS is a great tool for grounding your survey. But OPUS is
part of a larger toolset. Before you begin a project take a

moment to think about the ‘Big Picture’:

What are your GOALS?

Required accuracy

Horizontal and Vertical Datum; Geoid model
choice

Survey style: OPUS-Static, OPUS-Rapid Static,
OPUS-Projects

Consider FGDC Standards:

http://www.fgdc.gov/standards/projects/FGDC-standards-
projects/accuracy

Are there passive marks available for control?

Will CORS, passive or a combination control
the survey?

Are local passive marks recoverable,
undisturbed, sufficient quality, stable and GPS
friendly?

Where are the nearby NGS CORS stations?

This will determine ‘Rapid Static’ or ‘Static’

availability.

OPUS-Rapid Static Requirements

Find the closest 9 CORS sites with available
observations

A minimum of 3 CORS stations within 250 KM
are required.

Your site must be within 50 km of a polygon
created by the remaining available CORS.

If the eligible CORS count is low, check the
past reliability of recent observations to
insure that there is a high probability of
sufficient sites for OPUS-RS to compute a
solution.

Use the CORS ‘Data Availability’ to

Содержание iG5

Страница 1: ...iG5 Static GNSS Receiver User Manual Revision V 2021 03 23...

Страница 2: ...arks of their respective holders Windows is a registered trademark of Microsoft Corporation Bluetooth is a registered trademark of Bluetooth SIG Inc GNSS Safety Warning The iG5 GNSS receiver tracks an...

Страница 3: ...and Any of the GNSS system components can fail at any time Be prepared for down time and failures Do not us the iG5 receiver for any critical navigation purpose FCC Compliance The iG5 does not include...

Страница 4: ...iG5 User Manual 4...

Страница 5: ...tery Charging 16 Radio Notices 16 Bluetooth Radio 17 Front Panel Operation 17 Pushbuttons 17 On Off Pushbutton 17 Files Pushbutton 18 LED Indicators 18 Secret Reset Mainboard Mode 19 Recording Rate 19...

Страница 6: ...44 Interpreting OPUS Results 45 US Survey Feet vs International Feet Scale Factors 46 Getting ready to use OPUS 47 Using OPUS Projects 49 Best OPUS Practices for New and Experienced Users 51 The OPUS...

Страница 7: ...10 Pin Connector 90 iG5 Antenna Model 91 Slant Height to Vertical Height 92 Manually Converting Heights 92 Examples 93 Warranty 94 Exclusions 95 RMA 96 Introduction Thank you very much for choosing to...

Страница 8: ...GGPS com Click on Tools for firmware FAQs and other iG5 information Don t hesitate to call iGage for assistance deploying using or updating your device Remote assistance is available Technical Specifi...

Страница 9: ...ble and the instrument height HI Record the HI start time and point description in your field notes 3 Push the ON OFF button and hold it for 1 second until the lights flash After 30 seconds the blue L...

Страница 10: ...t ID the Description and the HI push the Submit to OPUS button 6 When prompted press OK then Control V to paste the file location and name then press the Enter key on your keyboard or click on Open to...

Страница 11: ...ASS and BeiDou are removed and the files are decimated to even 15 second intervals If you are using the iG5 occupation file in another application select the Configuration tab then choose Show Advance...

Страница 12: ...ceivers are sold as complete kits ready to record OPUS compatible static raw data sets Each receiver kit includes these items A Hard Shell Carry Case iG5 GNSS Head The iG Download tool on a thumbdrive...

Страница 13: ...anced replacement programs are available for mission critical applications we recommending purchasing Hot Spares Service is provided by iGage Mapping Corporation in Salt Lake City Utah Safety Informat...

Страница 14: ...ithium Ion batteries contained in them are like puppies in the summer if you leave them in your vehicle with the windows rolled up you will kill them DO NOT leave the iG5 or accessories inside a vehic...

Страница 15: ...g hot weather WARNING Avoid contact with the rechargeable Lithium ion battery if it appears to be leaking The battery fluid is extremely corrosive and contact with it will result in personal injury an...

Страница 16: ...ge about 40 per hour to 80 and then tapper to a full charger after another hour When the receiver is turned on the charging rate is slower and the receiver may not charge past 95 When the receiver is...

Страница 17: ...tific community The level of energy emitted is far less than the electromagnetic energy emitted by wireless devices such as mobile phones However the use of wireless radios may be restricted in some s...

Страница 18: ...rent occupation file The yellow Files LED will stop flashing when recording stops When the receiver is not recording pressing and holding the record button for 10 seconds will open a new observation f...

Страница 19: ...OEM receiver engine Recording Rate The iG5 receiver is configured to automatically record raw files with a 1 Hz rate The receiver has 6 741 970 900 bytes available for user observation files The recei...

Страница 20: ...low temperatures you should provide external power to the receiver 1 Place a freshly charged battery into the receiver 2 Place the receiver above the point you want to survey 3 Rotate the receiver so...

Страница 21: ...ile too short 9 At the end of the occupation Press and hold the ON OFF key for one second until the receiver closes the current file and turns off 10 Make a note of the end time in your field book Dow...

Страница 22: ...e USB Cable to your computer The iG5 receiver mounts just like a USB thumb drive flash drive on your Windows computer No special drivers are required To download data from your receiver 1 Turn on the...

Страница 23: ...ent then plug it back in If you continue to have problems check the Troubleshooting section at the end of this manual Starting the iGx Download Tool You can start the iGx download tool by clicking on...

Страница 24: ...s you can select and delete them with the Delete Occupation button For each required observations enter the values you recorded in your field book 1 PID Point ID A unique short identifier for each mar...

Страница 25: ...b2 prl If you plan to contribute to NGS or international projects follow this link https geodesy noaa gov FGCS BlueBook annexc annexc index shtml for information on obtaining an agency code If the _Ne...

Страница 26: ...creen shown below If Show Advanced Settings is set to Normal Support OPUS Projects or Advanced then this RINEX Solution helper screen is shown The program will suggest which service OPUS Static or OPU...

Страница 27: ...ill need to manually select the correct antenna type Click anywhere in the antenna selection box In the drop down selection box Enter IG5 and then click on the IGAIG5 NONE selection to choose the corr...

Страница 28: ...s Setting the Receiver Type Hidden when Simple When files are downloaded from the receiver the receiver type is associated with the HCN file The Receiver Model shows an occupation s associated hardwar...

Страница 29: ...e Receiver is turned on while sitting on your tailgate and then moved 20 feet and spun onto the tripod The first 5 minutes of the observation are bogus The operator forgets to turn off the receiver an...

Страница 30: ...mple Pressing the button will launch the UNAVCO TEQC tool and run a standard RINEX QC run on the currently selected observation file When the run is complete the results will be shown in a window You...

Страница 31: ...Button An iGage support technician may ask you to send a troublesome occupation to the factory for assistance Simply highlight the occupation in the grid click the Send button and the occupation with...

Страница 32: ...operator Email your email address If you change Show Advanced Settings from Simple to Normal Support OPUS Projects or Advanced additional setup values are shown You can change the rest of the configur...

Страница 33: ...delete an occupation it is not really deleted just moved to the _Deleted folder An undelete function is included in Utilities _Error sometimes short occupations won t include navigation records these...

Страница 34: ...receiver the program won t be able to automatically find the receiver until after the GPS has recorded at least one file Update GPS Model Shown only when Advanced selected The GPS Model is written int...

Страница 35: ...are of no value The download tool will automatically ignore files smaller than this minimum value This keeps useless files from cluttering your computer Show UTC Time When unchecked the default the do...

Страница 36: ...file spoofs a UNKNOWN EXT NONE and adjusts your actual HI to reflect the generic antenna L1 offset Default Agency Enter your company code here This value is placed into every RINEX file that is expor...

Страница 37: ...ecimated to 15 seconds Observations exported directly to RINEX are not decimated Your Email When you submit a file to OPUS you need to provide your Email address so the OPUS processor can return a sol...

Страница 38: ...int Positioning services The submit button on the main page tracks this setting and the upload strategy is adjusted to each available service Additional Information is available on each service on the...

Страница 39: ...rd Single Page Report Extended Standard baseline details State Plane in s Ft Standard XML Single Page XML For new OPUS users the Format Extended includes one important addition State Plane coordinates...

Страница 40: ...deleted observation to restore When an occupation is undeleted it is always returned to the _New project folder 2 HcRINEX Convertor Files are stored on the receiver in a HCN binary file When the iGx...

Страница 41: ...ction marks EVERY observation file on the receiver as unread The next download will read every single file on the receiver This will take quite a bit of time if your receiver had hundreds of files GPS...

Страница 42: ...ce OPUS provides simplified access to high accuracy National Spatial Reference System NSRS coordinates Upload a GPS data file collected with a survey grade receiver and obtain an NSRS position via ema...

Страница 43: ...ot available universally In general OPUS RS requires 3 or more CORS within 250 km of your site your site must be within 50 km of the polygon formed by the CORS sites If you are working in Southwest Ne...

Страница 44: ...page 50 It will save you time and failed jobs OPUS Projects OPUS Projects is a relatively new online tool Its use requires taking a NGS training class OPUS Projects will allow you to combine the obser...

Страница 45: ...74 97 ANT NAME TRM29659 00 SCIT FIXED AMB 162 171 95 ARP HEIGHT 0 0083 OVERALL RMS 0 011 m REF FRAME NAD_83 2011 EPOCH 2010 0000 IGS08 EPOCH 2014 2452 X 2184137 494 m 0 003 m 2184138 362 m 0 003 m Y 3...

Страница 46: ...te for the GEOID in addition to the Peak to Peak error estimate value for the ellipsoid height US Survey Feet vs International Feet Scale Factors IMPORTANT The state plane coordinates are listed at th...

Страница 47: ...Will CORS passive or a combination control the survey b Are local passive marks recoverable undisturbed sufficient quality stable and GPS friendly c Where are the nearby NGS CORS stations This will d...

Страница 48: ...ing OPUS Projects then More Better b Checkout online Mission Planning tools for U S satellite availability using reasonable masks 15 degrees during collection periods If there are any periods with few...

Страница 49: ...Settings to Support OPUS Projects or Advanced 2 Add the NGS registered OPUS Projects Project Identifier supplied by your project administrator Click the button Enter the exact identifier as the new pr...

Страница 50: ...iG5 User Manual 50...

Страница 51: ...shbowl is shaken and three to five slips are randomly pulled from the fishbowl and returned to the user OPUS error reporting is getting better Someday this joke won t be funny anymore But you should r...

Страница 52: ...messages back the missing solutions have been trapped in your email SPAM filter or you have entered your email address incorrectly on the submission form 3 OPUS RS is Very dependent on the Number Avai...

Страница 53: ...few of the stations are offline are missing data or are very noisy and must be discarded If you are in the middle of Utah there are very few CORS sites available on a good day On a bad day if a few st...

Страница 54: ...s that a full day s CORS station data is collected and then sometime after midnight UTC the data is archived and becomes available for use as CORS data Collection is ONCE PER DAY Hourly means that the...

Страница 55: ...a longer time before the nearby stations will be available for use This is especially troublesome if you acquire observation data in two separate UTC days In other words your observation spans midnig...

Страница 56: ...inous warning the observation data is noisy only 62 of the observations were used and the ellipsoid height RMS error estimate is 0 219 meters Q Is the second receiver defective The first OPUS solution...

Страница 57: ...S Stations Often when you look at the Data Availability plot from a CORS station s information page You will sometimes find that several hours or an entire day s observation data is unavailable shown...

Страница 58: ...llent stable locations have 100 open sky view above 10 degree elevation in all directions have top quality leveling mounts are bolted to stable masonry structures or well engineered ground monuments h...

Страница 59: ...x under Options But how can you determine if a CORS station should be excluded This is a great question The best way is to click on the Time Series short term button Here is an example of a great stat...

Страница 60: ...are fully contained in the green error bands Coupled with continuous recent Data Availability this station appears be a great CORS resource However if you look at a station s Time Series and it looks...

Страница 61: ...le Locations The NGS recommends that you submit GPS occupations collected in GPS suitable locations However very little NGS guidance is provided for what is GPS suitable in the context of OPUS submiss...

Страница 62: ...OPUS ready occupations No overhead power lines No trees leaves on or leaves off No power poles wood or metal No radar or radio paths that cross over the top of the receiver No chain link fences nearby...

Страница 63: ...e sites presented below are actual customer sites or in some cases slightly obfuscated locations to save embarrassment Remember that during times of low DOP see the mission planning section of this do...

Страница 64: ...eiver s view of the southern sky This forces the receiver and OPUS to lose lock This is a BAD location and will greatly increase the RMS error estimates and drop the percentage of observations used La...

Страница 65: ...te leaves on leaves off pine needles vs broad leaves length of pine needles size of tree trunks size of branches But trees above 10 to the East South or West are bad and 100 canopy is really bad Huge...

Страница 66: ...earby surfaces present opportunities for the receiver to have signals arrive having taken multiple paths multipath or entirely the wrong path Not only do these tanks block the view to the South but th...

Страница 67: ...e bottom of deep canyons especially East West trending canyons will present full 100 obstruction below the ridge line to the South Most of the GPS satellites are to the South This is BAD RBUT below is...

Страница 68: ...n that is no longer suitable for GPS observations It was set prior to the construction of the powerline This is a BAD location You should avoid locations that are under high voltage transmission lines...

Страница 69: ...ns up Longer Observations OPUS RS is especially vulnerable to bad sites If you think a site may have problems try to collect over two hours of data so that you will have the option of using OPUS Stati...

Страница 70: ...an see that most of the day DOP is excellent Most OPUS submissions will be successful However starting at 5 30 pm there are large DOP spikes At this location on this day any one hour OPUS RS occupatio...

Страница 71: ...d As you can see from the DOP plot above high DOPs rarely last for more than an hour and longer OPUS Static occupations will usually have some periods of low DOP and excellent coverage The change in s...

Страница 72: ...are going to have to make a slant measurement and then reduce the slant distance and SHMP Slant Height Measurement Point vertical offset to a metric vertical height The process is described on page 9...

Страница 73: ...the satellite in the sky and the XY offset of the center of the antenna from the center of the mounting nut OPUS compensates for the northing easting offset assuming the antenna is facing North If you...

Страница 74: ...uncertainty to your solution 12 Why does Modern RTK work where OPUS fails Yes OPUS is substantially more finicky than modern GNSS RTK OPUS jobs routinely fail in places and at times that RTK works fl...

Страница 75: ...way back to each individual CORS station Typically these will be 45 KM 28 miles to 150 KM 93 miles baselines In some areas the nearest CORS station might be 250 KM distant RTK processes the baseline...

Страница 76: ...s visible to your receiver however just tracking is not sufficient to accurately evaluate a carrier phase position To compute an accurate position your receiver needs a very clean signal with few refl...

Страница 77: ...diameter At the midpoint between your receiver and the satellite the Fresnel beam is over 6 000 feet in diameter And that is for the signal for a single satellite multiply this by the number of tracke...

Страница 78: ...rvation will be wasted The OPUS family of online tools OPUS Static OPUS RS OPUS Projects are amazing They allow users to generate reliable X Y and Height coordinates for GPS suitable locations anywher...

Страница 79: ...minutes When the receiver is first turned on Wi Fi is enabled then after 15 minutes if Wi Fi is not in use it is automatically powered off Once off click the Files button once then 5 seconds later the...

Страница 80: ...serial number of your device 2 Click on the receiver then click on Connect 3 Enter the Wi Fi password 12345678 4 Click on Next to connect by Wi Fi to the GPS head 5 Open a browser window on your PC or...

Страница 81: ...on you will be at the Home Screen of the GPS receiver From the Wi Fi interface you can configure nearly every aspect of the receiver s operation using the left hand section tabs and sub items Setting...

Страница 82: ...FF using the Switch buttons Clicking Clear Data will delete the current observation file Clicking Clear All clears ALL observation files on the receiver To change the recording defaults if the Log Sta...

Страница 83: ...The default setting is Yes You can always toggle the current setting by clicking and holding the Files button for 10 seconds Sample Interval The Sample Interval controls how often data is recorded to...

Страница 84: ...allow the receiver to begin tracking satellites before they reach 10 degrees so that all tracking has stabilized Duration Time The Duration Time sets the maximum length of a single file The default is...

Страница 85: ...MP of the internal measurement is undefined Don t use Vertical Height as the L1 Phase Center height assumed by the receiver may not match the NGS calibration Storage Format Storage Format controls the...

Страница 86: ...t of data that can be kept on a receiver Advanced Recording Settings Start Date Start Time You can enable a date and time to open a recording file The default is No for both settings Since it is possi...

Страница 87: ...set to No at the end of the Duration Time the receiver will stop recording data The default is Yes and it is recommended that you not change this setting Store Location It is possible to attach an ex...

Страница 88: ...ck on Receiver Configuration then Receiver Reset You can reset the OEM board and the receiver s settings The most common reset mode is Clear Satellite Data Troubleshooting the iG5 Receiver 1 Receiver...

Страница 89: ...t occupation file The default recording rate is at 1 second interval thus the yellow Files LED should flash once the receiver begins tracking data Auto recording is controlled via the Web Interface ac...

Страница 90: ...nector The iG5 uses a standard Type C connector for charging and data download USB Port Definition The iG5 has a standard USB Type C connector When connected to a computer with a USB cable the receive...

Страница 91: ...ion list available from https www ngs noaa gov ANTCAL Calibration Values L1 0 08444 meters L2 0 06825 meters Radius minor 0 0597 meters SHMP 0 0534 meters If you encounter an application that does not...

Страница 92: ...er an F after the measured vertical height For the iG5 4 512 F becomes 1 375 3 meters vertical If you have a slant height in feet you can enter a FS or SF after the measured slant height 4 512 FS beco...

Страница 93: ...93 iG5 User Manual Examples Measured Slant s feet Slant s m iG5 Vertical v m 6 965 2 123 2 068 7 5 148 1 569 1 514 6...

Страница 94: ...ill void this warranty In the event of a defect IMC will at its option repair or replace the hardware product with no charge to the purchaser for parts or labor The repaired or replaced product will b...

Страница 95: ...transmissions Inaccurate transmissions can occur due to changes in the position health or geometry of a satellite or modifications to the receiver that may be required due to any change in the GPS IM...

Страница 96: ...if the date of sale cannot be determined or if the serial number is altered or removed IMC will not be responsible for any losses or damage to the product incurred while the product is in transit or i...

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