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71

iG5 User Manual

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One pitfall of OPUS-RS is very short occupations may entirely
fall into a very high-DOP period. 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 satellite constellation, which determines PDOP
is why a receiver will work one day and then not work in a
nearby location at a different time.

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Summary of Contents for iG5

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

Page 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...

Page 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...

Page 4: ...iG5 User Manual 4...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 50: ...iG5 User Manual 50...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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