SatGen v3 Manual
Contents
1. 22 07 2014 amp UTC Time of Simulation 9 00 00 i Qwamics Medium Update rate ne 3 Elevation mask 5 d Height geoid Ems gt Figure 10 Import file screen Smooth NMEA data This must be ticked before the NMEA file is loaded this will then apply smoothing to the data to give a more accurate representation when noise is encountered in the original data See figure 13 The original data in red and the smoothed data in blue This is displayed in the scenario details section once the file is loaded Coarse interpolation for large KML files Very large KML files will exceed the software s memory limits and cannot be loaded If this occurs tick this radio button and the software will use a coarser interpolation method reducing the size of the memory allocation required Figure 11 Smooth NMEA data Page 13 23 July 2014 satGens NS SatGen v3 Manual User defined The user defined trajectory input feature is the most versatile of all scenario input methods By building a simple list of commands a trajectory can easily be created By clicking the Preview Button the Scenario details Section will display the output of the preloaded instructions By clicking the Help button a full description of the command definitions and update commands types is displayed A quick and easy way to get going is to load one of the predefined examples loaded in the software by clicking the Examples button This list of predefined user ins2. 5 g Max vertical accel 5 Figure 9 User dynamics input screen 3888 km h 23 July 2014 Satben uu SatGen v3 Manual N e Max jerk rate This controls the maximum rate of change of acceleration in a 2D horizontal plane a low setting would allow for slowly increasing acceleration and a high setting giving a rapid change e Max lat acc The maximum lateral acceleration controls the maximum acceleration perpendicular to the direction of travel e Max long acc The maximum longitudinal acceleration controls the maximum acceleration deceleration in the direction of travel e Max speed The maximum speed controls the maximum speed the scenario can achieve e Max vertical jerk The Maximum vertical jerk rate controls the rate of change of acceleration in the vertical direction e Max vertical accel The maximum acceleration controls the acceleration in the vertical direction SatGen v3 height When establishing a position solution a GPS receiver generally works in Earth Centred Earth Fixed ECEF coordinates It then translates these using a given datum into geodetic coordinates latitude longitude altitude The datum specifies an oblate soheroid model for the earth that best approximates the surface of the planet ignoring all topographical irregularities different datum s can be chosen to best approximate the region of interest to the end user SatGen v3 uses the de facto standard World Geodetic System WGS 84 which is applicab
3. L1 constellation constellation s Beidou B1 Any single dual or triple GPS L1 SatGen v3 three RLLSSGSWO3 3 constellation scenario file of the GLONASS L1 constellation three constellation s available Beidou B1 The software will recognise the USB dongle and display the following status e SatGen Version Number No dongle detected Demo version limited to 120 seconds e SatGen Version Number Single Dual or Three channel enabled Page 6 23 July 2014 Satben a AN SatGen v3 Manual The software dongle once inserted into the USB port will install automatically and will indicate that that it is installed correctly by displaying a red light For normal operation please ensure that the Security Dongle is installed prior to launching the SatGen software and is recognised by the PC Please ensure your PC is connected to the internet when installing the dongle for the first time This will allow for the automatic download of the relevant drivers for your security dongle Figure 2 SatGen software dongle installed in a USB port Page 7 23 July 2014 satGens N SatGen v3 Manual Static Scenario Creation If you are creating a simple stationary or static scenario you just use the static scenario button located on the left of the screen A SatGen V3 0 2 Two constellations Define static scenario Stabe Static aan scenario Set postion button Position Drag route Set Set length of position scenar
4. between the WGS 84 earth ellipsoid surface and mean sea level geoid surface mean sea level surface below WGS 84 ellipsoid surface x x Age of Differential GPS data Time in seconds since last SC104 Type 1 or 9 update null field when DGPS is not used xxxx Differential reference station ID 0000 1023 Example GGA Data File SGPGGA 212331 00 3902 9511 N 10451 2682 W 8 00 0 0 2057 8 M 15 5 M 68 SGPGGA 212332 00 3902 9531 N 10451 2694 W 8 00 0 0 2058 6 M 15 5 M 6F SGPGGA 212333 00 3902 9548 N 10451 2718 W 8 00 0 0 2059 0 M 15 5 M 62 SGPGGA 212334 00 3902 9559 N 10451 2750 W 8 00 0 0 2059 0 M 15 5 M 69 SGPGGA 212335 00 3902 9565 N 10451 2786 W 8 00 0 0 2059 0 M 15 5 M 6C Page 19 23 July 2014 Satben AN SatGen v3 Manual N Contact Details Racelogic Headquarters German Office US Office Racelogic Ltd Racelogic Deutschland Racelogic USA Unit 10 Swan Business Centre Am Postplatz 5 27240 Haggerty Rd Suite E17 Osier Way 35781 Weilburg Farmington Hills Buckingham MK18 1TB Germany MI 48331 United Kingdom USA Tel 44 1280 823803 Tel 49 6471 927 996 Tel 1 248 994 9050 Fax 44 1280 823595 Fax 49 6471 927 770 Fax 1 248 994 9054 Email labsat racelogic co uk Email sales racelogic de E mail sales racelogicusa com Email support racelogic co uk Email support racelogic co uk Email support racelogic co uk Web www labsat co uk Web www labsat co uk Web www labsat co uk Document version cont
5. 5 dB Hz of added noise Start the scenario creation by clicking the Create Scenario button selecting the LabSat file format as described in the previous section Page 12 23 July 2014 SatGen v3 Manual satGens NS Import File SatGen v3 allows for the import of three file format Load Google Earth KML File Google Earth files in KML format can be loaded into the software The Position x y and Speed profile is immediately displayed Date Time Dynamics update rate and mask angle can bet set to users requirements Load NMEA File NMEA Files in the SGGA format can be loaded into the software The Position x y and Speed profile is immediately displayed Date Time not dynamics update rate and mask angle can bet set to users requirements Load VBOX File The VBOX product range a number of high specification GNSS data loggers from Racelogic ranging from 5Hz to 100 Hz VBOX files in the vbo format can be loaded into the software The Position x y and Speed profile is immediately displayed Date Time not dynamics update rate and mask angle can bet set to users requirements For test scenario files go to the examples sections at the rear of the manual BR satGen v3 0 2 Two constellations Import file File type N Load Google Earth KML file Load file i Load NMEA file buttons U t Smooth Smooth NMEA data b 450 500 550 600 650 700 75 z coole NMEA Se ro LE interpolation cn si button User defined
6. A data 22s22002002002000nunnunnnnnnunnunnnnnnennunnnnne Figure 12 User defined examples screen Figure 13 User commands ccsscssccsccssccsccsscnsccsscsscesccsscescescsssoasees Figure 14 User command examples Figure 15 KML example file loaded Figure 16 NMEA example file loaded Figure 17 VBOX example file loaded Page 4 23 July 2014 SatGen 3 SatGen v3 Manual NS Introduction The use of multi channel signal simulators to verify and evaluate Global Navigation Satellite Systems GNSS performance is at the core of any test approach SatGen software provides an easy to use but powerful solution to users wishing to replay GNSS test scenarios SatGen v3 allows users to specify a complete set of simulation parameters to create an IQ data file at baseband The user can specify the simulation parameters including receiver dynamics GPS satellite profile and the GPS receiver signal and hardware profile SatGen v3 provides accurate and repeatable RF signals and is up to 3 times faster than previous versions SatGen is ideal for applications requiring e High degree of flexibility not found in other hardware based signal generators e The ability to make custom modifications to the simulator to support unique testing requirements e Highly repetitive testing where consistency between test runs is critical SatGen PC requirements Minimum recommended specification for the desktop or laptop PC to be used with SatGen v3 softwar
7. Earth KML File button Select the KML file City_London_Cab_route located in My Documents SatGen Examples Click Open in the file selection window and the file will automatically load into the software Check that the correct almanac is present 2 3 4 5 Select the date required for the simulation and enter the UTC time 6 7 Click the Create scenario button select LabSat system file name 8 Click OK to create your scenario j Scenano Detals y FERN x Total time 391 008 Total distance 4 60 km il TT Smooth NMEA data FT Use coarser nterpolation for laige kml hles FT Use KML height as stop time x j PART o 9 10 20 30 40 SO 60 70 80 90 100 110 129 Time 5 Scenano Settings Date of Simulation 22077201 4 4 Today Almanac UTC Time of Simulation 500 00 Update Almanac file x on Intial acquisiton delay po 0400 i Dynamics Medium xj po 00 31 s Update rate THe End delay Sj Elevation mask 2 Delta GPS C No d8 H2 46 S Height geoid Detsut Glonase CANO fH 52 5 mora F Figure 15 KML example file loaded Page 16 23 July 2014 Satben a AN SatGen v3 Manual Example 2 NMEA dynamic scenario This example uses a pre recorded NMEA file to define a dynamic path 1 Click the import file button on the SatGen v3 main screen Click the Load NMEA File button Select the NMEA File Vesuvius_rim_NMEA located in My Documents SatGen Examples Click Open in the file selection
8. Figure 5 Scenario progress screen Automatic x Satben a AN Constellation selection Output file name amp location 23 July 2014 satGens N SatGen v3 Manual Dynamic Scenario Creation Draw route To create a dynamic route click the draw route command The new window allows you to draw a route on the map quickly and accurately By inserting a location description in the search box any location can be found in Google maps You can then easily insert a route by clicking on the map in sequence The map can be zoomed in or out for additional accuracy by using the normal Google map commands Digital maps terrain maps or satellite photo maps can be selected and the route edited or cleared by clicking the relevant command w Draw required route in Google Maps Draw Route Draw i m 2 taw route in Google maps 2 route l Draw button route window Draw route milton keynes ron Map zoom 5 ia 3 ra FAT Map type control Edit points Clear Map s y ark selection Drawn route Drawn route edit in red control e Figure 6 Draw route in Google maps screen Draw the required route by clicking in sequence to draw the route on the Google map the route can then be saved as a KML file By clicking on the OK button the drawn route is automatically inserted into the software and is ready for processing into a scenario The software then shows the drawn route in the Scenario details screen with a disp
9. Satben N SatGen v3 Simulation Software Instruction Manual I Contact NavtechGPS for product details www NavtechGPS com NavtechGPS I 1 703 256 8900 800 628 0885 info navtechgps com SatbenA SatGen v3 Manual NS Page 3 23 July 2014 SatGen v3 Manual CONTENTS INTRODUCTION SatGen PC FEQUNEMENES nannte PROCESS OVEIVIEW nennen System Peratlon ennaa Security GON BIG iaia STATIC SCENARIO CREATION DYNAMIC SCENARIO CREATION DEW TOUTE en SCENALIO ENNE ee een User dynamics INPUT arr SatGenV 3 DEI SIN ai aha Carrier to noise ratio anni IMPORT FILE USER DEFINED Commands availa Dle sssrinin User command eamples anna EXAMPLE DATA FILES Example 1 Google KML dynamic scenario Example 2 NMEA dynamic scenario Example 3 VBOX VBO dynamic scenario APPENDIX GGA NMEA format ccsscssccecccsccscceccesccscceccesccscceccescescceccescesscecceses Example GGA Data File Liana CONTACT DETAILS Document version control una FIGURES Figure 1 SatGen main screen na Figure 2 SatGen software dongle installed in a USB port Figure 3 Static scenario creation Figure 4 Create scenario Screen ccsccsccsccsccsccscsscescescsscsscsscsscsscnsoecs Figure 5 Scenario progress screen Figure 6 Draw route in Google maps screen Figure 7 Elevation mask example Figure 8 Scenario settings section Figure 9 User dynamics input screen Figure 10 Import file screen Figure 11 Smooth NME
10. ator systems The software will create three two or single constellation files for GPS L1 GLONASS L1 or BeiDou B1 in any constellation combination There are four ways of generating the desired trajectory data with SatGen v3 1 Static Scenario Generation Use the inbuilt Google mapping to search for a location or enter the coordinate s ditectly 2 Draw Route Use the inbuilt Google map to draw a dynamic route 3 Import File Import trajectory files in the following formats a Google earth KML file b NMEA file in SGGA format c VBOX file in VBO format 4 User Defined create a trajectory using either the predefined examples or by entering user generated commands to control the position velocity and dynamics of the output file Page 5 23 July 2014 SatbenA SatGen v3 Manual NS System operation The SatGen v3 GUI is shown below The GUI will load default values upon start up There are two main stages of scenario production using SatGen The first stage is to define the trajectory of the test and the second is to convert this trajectory into a scenario file which can be replayed on LabSat The software is designed to be as simple to use as possible and will need the PC that the software is installed on to be connected to the internet This will allow for the Google maps and almanac details to be downloaded automatically The SatGen v3 main screen is divided into three sections The left hand side has the main trajecto
11. create your scenario ml w SNA DE Sonato Setting 2 07 2014 Todap Almene Armee El Emm Update Airsnac He i intial acquention delay ona 9 Enddeiy 000 Deli GPSC Mo amp BH oS Da j i Skos Co dB Ha 52 MENS s C 10 sole ea r t 7 noe oO Figure 17 VBOX example file loaded Page 18 23 July 2014 Satben uu SatGen v3 Manual N Appendix GGA NMEA format Define the dynamic profile using a GGA NMEA formatted text message The GGA format is shown below SatGen will properly handle the UTC midnight rollover if it exists in the NMEA input file GGA NMEA Format Definition S GGA hhmmss ss Ill lLa yyyyy yy a X XX X X X X MX X Xxx hh lt CR gt lt LF gt hhmmss ss UTC of position III II a Latitude N S vyyyy yy a Longitude E W x GPS Quality indicator Shall not be a null field 0 Fix not available or invalid 1 GPS SPS Mode fix valid 2 Differential GPS SPS Mode fix valid 3 GPS PPS Mode fix valid 4 Real Time Kinematic Satellite system used in RTK mode fixed integers 5 Float RTK Satellite system used in RTK mode floating integers 6 Estimated dead reckoning Mode 7 Manual Input Mode 8 Simulator Mode xx Number of satellites in use 00 12 may be different from number in view x x HDOP x x M Altitude Mean sea level geoid meters x x M Geoidal separation meters Geoidal Separation the difference
12. e Intel i5 4GB RAM 250GB Hard Drive Operating System Microsoft Windows 7 64 bit Windows 8 64 bit USB 2 0 port Process overview SatGen v3 software will run in two modes e Demonstration Mode to allow for short demonstrations SatGen software will run for 120 seconds without the Security dongle installed to allow for software feature demonstration e Operational Mode SatGen v3 will operate as a single dual or triple constellation version depending upon which security dongle is inserted It is essential that users do NOT lose their dongle as the dongle cannot be replaced A dongle replacement will require a full re purchase of the SatGen v3 software SatGen software comes with the following configuration e SatGen v3 Single Constellation This version allows for easy conversion of data into LabSat scenario files for replay with LabSat LabSat 2 or LabSat 3 simulator systems The software will create a single constellation file for GPS L1 or GLONASS L1 or BeiDou B1 e SatGen v3 Dual Constellation This version allows for easy conversion of data into LabSat scenario files for replay with all hardware versions of LabSat simulator systems The software will create single or dual constellation files for GPS L1 GLONASS L1 or BeiDou B1 in any two or single constellation combination e SatGen v3 Three Constellation This version allows for easy conversion of data into LabSat scenario files for replay with all hardware versions of LabSat simul
13. ile box Fill in the new name in the file name box click Save then OK and the software will create the file The SatGen progress box will appear giving an indication of the progress and time until file completion See figures 4 amp 5 below Page 8 23 July 2014 SatGen v3 Manual LabSat file type selection Start scenario creation button Scenario creation progress Page 9 REI Two constellations Define static scenario Static Scenano Details Position x y m Total tme N Set position ini i ee N a Position Fi 507351 fo 127758 Height SZ Create scenario Length of sce LabSat detals Pick up to two constellations iv GPS eos 7 Glonass Output file output ls3 Change 00 150 200 250 300 350 400 0 05 00s no Time OK X 22 07 2014 lt Today on o or Simdabon 8 00 00 a Almanac Figure 4 Create scenario screen PA SatGen V3 0 2 Two constellations Define static scenario Automatic z Static Scenano Details Position x y m T ai SE Total time Set postion pi P ramidisance Position far 507351 fo 127758 Height fi00 m i a FEE Length of sce rLabSat detals Satcen Progress INN PIE 00 450 500 SSO 600 650 700 7 0 4 processed 00 01 47 until completion Speed profile 00 150 200 250 300 350 400 Time s 0 02 00s 22707 2014 Today Almanac ordimulation 00 o g
14. io button required Create scenario button Set scenario ten time and date Scenario setting more options tick box Figure 3 Static scenario creation By clicking the Set position button you can easily select the location for your static scenario If the static position is known then insert the position details in the latitude longitude and height sections By clicking the Set position button a Google map interface will appear In the search box type the name of your required location For example type London UK and press the search button The map will instantly move to London UK and automatically insert the Latitude and Longitude coordinates for the position located on the map You can pan and zoom using the standard Google controls and use the standard map or a satellite photo map if required By clicking on the required scenario location the position is automatically set into the software Click the OK button to load the position Then set the length of static scenario required in hours minutes and seconds For a basic scenario set the date and start time of the scenario and if the PC is connected to the internet the automatic almanac download will activate then just click the Create scenario button For further details on the Scenario settings section go to the dynamic scenario creation section below Set the LabSat details to LabSat version required and if you need to change the name of the file click the change button in the output f
15. ittent obstruction from trees buildings Figure 7 Elevation mask example Satellite at 8 is ignored connected via the PC to the internet to download the relevant almanac required Scenario Settings Date of Simulation UTC Time of Simulation 3 00 00 Dynamics Update rate Elevation mask Height geoid al 22 07 2014 Today 1Hz M 5 9 Default Figure 8 Scenario settings section Almanac Update Almanac file Automatic r 2014 203 alm Initial acquisition delay 0 04 00 End delay 0 00 31 vi al GPS C No dB H2 46 Default Glonass C No dB Hz 52 more V Satben a AN For automatic almanac download the software needs to be These almanacs are stored in the older Almanacs located in My Documents SatGen Almanacs The initial acquisition delay should be set to reflect the static time allowed for the device under test DUT to acguire the signals and to start to navigate As a standard Racelogic recommend 4 minutes to allow for DUT set up and signal acguisition End delay should be set to allow for the receiver to stop and any files saved of the DUT performance Normally set to 30 seconds User dynamics input The dynamics setting allows for four dynamic settings Low Medium High settings and a user controlled input screen Page 11 Pa User dynamics in User dynamics Max Jerk rate 5 g s Max speed Max latace 5 g Max verticaljerk 5 Maxlongacc
16. lay of the position x y in meters and the speed profile in kilometres per hour against time Scenario settings In the Scenario settings section the more tick box should be ticked to reveal further settings Date and time UTC can easily be defined The dynamics selected will be reflected in the Scenario Details screen By selecting High Dynamics the maximum speed will be 300 kph Medium Dynamics for a maximum of 100 kph and Low Dynamics for a maximum of 60 kph The software will automatically smooth the dynamic data to reflect turns at slower speeds The update rate for the route can be defined from 1 Hz to 100 Hz This will defined the granularity of the route created in the software The elevation mask can be set to replicate the antenna environment when using a GPS receiver This feature is normally used to improve GPS signal quality when nearby obstacles like trees and building are reflecting or temporarily obscuring the signal from satellites at low elevation Raising the mask will cause a GPS engine to ignore satellites below the mask angle so must be used carefully as it also reduces the total number of received satellites So the higher the elevation mask the fewer satellite in the scenario file created The elevation mask should normally be set to 5 degrees Page 10 23 July 2014 SatGen v3 Manual Select the almanac update to automatic or manual u Satellite above ER 10 is used Unwanted reflection from building Interm
17. le globally The initial altitude determined by translating the ECEF X Y Z to geodetic latitude longitude altitude with the WGS 84 datum is an altitude above or below the theoretical oblate spheroid and not the surface of the planet in reality To derive a more accurate representation of the true altitude a GPS receiver will then use a model of the earth s gravitational field to reference the altitude to mean sea level MSL Various models exist for these estimates of MSL around the world using increasing numbers of coefficients to derive more accurate estimates The most common are EGM 84 EGM 96 and EGM 2008 Any altitude you enter into SatGen will be taken as height above MSL and in the process of simulation this height will be added to the geoid separation for the current latitude and longitude as estimated by the EGM84 geoid model When generating a simulation from a provided NMEA file containing SGGA sentences SatGen does not perform any geoid modelling but instead uses the geoid separation in addition to the altitude above MSL provided in the NMEA 0183 GGA sentence Carrier to noise ratio SatGen v3 allows for the desired Carrier to Noise ratio C No to be set for GPS and Glonass signals The maximum setting which give the strongest signal for GPS is 51 dB Hz and for Glonass the maximum setting is 57 dB Hz Some GPS engines require a few dB s of noise in order to get lock The default setting for GPS is 46 dB Hz and Glonass 52 dB Hz i e
18. rol Revision Description Date 3 0 First Release MS 23 07 2014 Page 20 23 July 2014
19. ry selection type control buttons The middle section has the trajectory input section and the third right hand section has the Scenario Details and Scenario Settings sections USB security dong le dd SatGen V3 0 2 Two constellations recognised ze Scenario Scenario i details trajectory Draw route sm n section buttons si Trajectory set up section User defined UTC Time of Simulation ERIE Scenario settings section Figure 1 SatGen main screen Security dongle SatGen v3 software is available as a demonstration or operational product The SatGen v3 demonstration version is readily available and will work as normal for demonstration and familiarisation purposes The demonstration software is exactly the same as the operational software but without the security dongle inserted The software will function as normal with the exception that it will only create a LabSat scenario of only 120 seconds duration This is to allow for a demonstration scenario to be created but not of sufficient duration to be of any use as a device testing file Operational software will create LabSat scenarios of any duration required The dongle is available in three Eiern output variants Any single constellation scenario GPS L1 SatGen v3 single RLLSSGSW03 1 file of the three constellation s GLONASS L1 constellation available Beidou B1 Any single or dual constellation GPS L1 SatGen v3 dual RLLSSGSWO3 2 scenario file of the three available GLONASS
20. tructions covers a selection of popular tests to be completed with the SatGen v3 and LabSat combination to test GNSS devices Pre loaded delta i i instructions for 1 1at 52 038185 position height speed and turn instructions User Double click example command Acceleration O l Preview example list instructions In the scenario n details section ei EEE n North Pole circle i 20 4 60 n South Pole circle Preview line er Equator circle instructions in the 2 z Ga 22 07 2014 Circle around a setpoint I I 900 00 Squarewithstopsusingrepeatcommand graphical display it nnt tejes en J Help button Constant acceleration d i S p I ays User command files instructions Figure 12 User defined examples screen Commands available Recognised user commands details are available in the Help button together with user tips and details of the debug mode Commands to define initial conditions Commands to update trajectory TiM XXXXX XX time in seconds from speed xxx yyym change velocity to xxx in yyy metres midnight speed xxx yyys change velocity to xxx in yyy seconds Lat XXXX XX latitude of starting point Heading xxx yyym change heading by or xxx in degrees degrees using radius of yyy metres Long XXXX XX longitude of starting Heading xxx yyys change heading by or xxx degrees point in degrees in yyy seconds StartHeight xxxx xx height of starting point Height xxx yy
21. window and the file will automatically load into the software Check that the correct almanac is present 2 3 4 5 Select the date required for the simulation and enter the UTC time 6 7 Click the Create scenario button select LabSat system file name 8 Click OK to create your scenario TT Smooth NMEA date TT Use coaer interpolation for l ge kmi Hes IT Use KML height as stop time 190 200 210 220 230 240 250 260 270 280 290 300 Time 8 Scenario Settngr Date of Simdationi ezo 4 Today Almanac che 2014 UTC Time of Simdation 90000 Update amans intial acquisition delay Dynamics Medum Update sate fin End delay Elevation mask 5 o Detauk GPS C No BH2 46 D ct s l Esma 2 Deli Glonass C No seat 52 more 7 Figure 16 NMEA example file loaded Page 17 23 July 2014 Satben a AN SatGen v3 Manual Example 3 VBOX VBO dynamic scenario This example uses a pre recorded VBOX VBO file to define a dynamic path Click the import file button on the SatGen v3 main screen Click the Load VBOX File button Select the VBO file F430 Carolina vbo located in My Documents SatGen Examples Click Open in the file selection window and the file will automatically load into the software Select the date required for the simulation and enter the UTC time Check that the correct almanac is present Click the Create scenario button select LabSat system file name ca eS oY EB m Click OK to
22. ys change height to xxx metres in yyy seconds in metres Height xxx yyym change height to xxx metres in yyy StartHeading xxx xx initial heading in metres degrees wait XXS continue at same speed and Wait xxs Wait stationary for xx seconds heading for xxs Figure 13 User commands Should you encounter any memory capacity issues when loading very large files please tick the Reduce resolution for long scenario tick box Page 14 23 July 2014 saten SatGen v3 Manual Nes User command examples A selection of predefined command instructions is available as a set of common user applications Any of the examples listed can easily be modified to suit user requirements and saved for later use User command example files Description Acceleration Example of a simple acceleration and deceleration profile Circle Square Figure of Eight Airport take off North Pole Circle Circle around the north pole to test latitude and longitude output longitude output output circle Square with stops using repeat command Circuits around a square Basic rocket trajectory Constant acceleration Standard acceleration command Figure 14 User command examples Page 15 23 July 2014 Satben a UN SatGen v3 Manual Example data files Example 1 Google KML dynamic scenario This example uses a pre recorded KML file to define a dynamic path 1 Click the import file button on the SatGen v3 main screen Click the Load Google
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