Bernese GNSS Software Version 5.2 Tutorial

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5 Terminal Session: WednesdayAll program output files related to the QIF ambiguity resolution method have been specifiedwith program output filenames fitting in the shape ${P}/INTRO/OUT/????$S+0_Q.OUTand can, therefore, easily be selected in the input field “GPSEST/ADDNEQ output files”.This summary (${P}/INTRO/OUT/QIF10207.SUM) reports among others how many ambiguitiesare resolved for each baseline 1 :File Sta1 Sta2 Length Before After Res Sys(km) #Amb (mm) #Amb (mm) (%) ...-------------------------------------------------------------- ... -------GAJO2070 GANP JOZ2 344.407 102 1.0 24 1.1 76.5 G ... #AR_QIFGAJO2070 GANP JOZ2 344.407 90 1.0 38 1.1 57.8 R ... #AR_QIFGAJO2070 GANP JOZ2 344.407 192 1.0 62 1.1 67.7 GR ... #AR_QIFHEZI2070 HERT ZIM2 685.151 120 1.0 46 1.1 61.7 G ... #AR_QIFHEZI2070 HERT ZIM2 685.151 98 1.0 62 1.1 36.7 R ... #AR_QIFHEZI2070 HERT ZIM2 685.151 218 1.0 108 1.1 50.5 GR ... #AR_QIFJOLA2070 JOZ2 LAMA 201.183 118 0.9 36 1.0 69.5 G ... #AR_QIFJOLA2070 JOZ2 LAMA 201.183 96 0.9 38 1.0 60.4 R ... #AR_QIFJOLA2070 JOZ2 LAMA 201.183 214 0.9 74 1.0 65.4 GR ... #AR_QIFJOON2070 JOZ2 ONSA 829.775 136 1.0 56 1.0 58.8 G ... #AR_QIFJOON2070 JOZ2 ONSA 829.775 104 1.0 68 1.0 34.6 R ... #AR_QIFJOON2070 JOZ2 ONSA 829.775 240 1.0 124 1.0 48.3 GR ... #AR_QIFJOWS2070 JOZ2 WSRT 981.243 106 1.0 30 1.1 71.7 G ... #AR_QIFJOWT2070 JOZ2 WTZR 663.182 104 1.3 28 1.4 73.1 G ... #AR_QIFJOWT2070 JOZ2 WTZR 663.182 98 1.3 46 1.4 53.1 R ... #AR_QIFJOWT2070 JOZ2 WTZR 663.182 202 1.3 74 1.4 63.4 GR ... #AR_QIFMAZI2070 MATE ZIM2 1013.811 122 1.2 54 1.2 55.7 G ... #AR_QIFMAZI2070 MATE ZIM2 1013.811 94 1.2 58 1.2 38.3 R ... #AR_QIFMAZI2070 MATE ZIM2 1013.811 216 1.2 112 1.2 48.1 GR ... #AR_QIFPTZI2070 PTBB ZIM2 640.077 114 1.2 26 1.3 77.2 G ... #AR_QIFTLZI2070 TLSE ZIM2 596.848 120 1.2 20 1.2 83.3 G ... #AR_QIFTLZI2070 TLSE ZIM2 596.848 90 1.2 58 1.2 35.6 R ... #AR_QIFTLZI2070 TLSE ZIM2 596.848 210 1.2 78 1.2 62.9 GR ... #AR_QIFWTZI2070 WTZR ZIM2 475.909 116 1.4 44 1.4 62.1 G ... #AR_QIFWTZI2070 WTZR ZIM2 475.909 92 1.4 56 1.4 39.1 R ... #AR_QIFWTZI2070 WTZR ZIM2 475.909 208 1.4 100 1.4 51.9 GR ... #AR_QIF-------------------------------------------------------------- ... -------Tot: 10 643.159 1158 1.1 364 1.2 68.6 G ... #AR_QIFTot: 8 601.283 762 1.1 424 1.2 44.4 R ... #AR_QIFTot: 10 643.159 1920 1.1 788 1.2 59.0 GR ... #AR_QIF1 You may check the impact of introducing the ionosphere model (COD$YD+0 in “Ionosphere models” ofpanel “GPSEST 1.1: Input Files 1”) by cleaning this input field. Repeat the ambiguity resolution(without saving the resolved ambiguities into the observation file: unmark option “Save resolved ambiguities”in panel “GPSEST 3.2: General Options 2”) and compare the a posteriori RMS and thenumber of resolved ambiguities.Page 72AIUB
5.4 Daily GoalsAn analogue statistics can be produced for the short baseline ambiguity resolution. Exchangethe entry for the input file selection (“GPSEST/ADDNEQ output files”) to catch allfiles of the shape ${P}/INTRO/OUT/????$S+0_1.OUT. It is recommended to change alsothe name of the resulting summary (“Ambiguity res. summary”) and the identification stringin the summary (e.g., L12 for “Ambiguity resolution: #AR_ID”) in panel “GPSXTR 2: OutputFiles” .File Sta1 Sta2 Length Before After Res Sys(km) #Amb (mm) #Amb (mm) (%) ...-------------------------------------------------------------- ... -------WTWZ2070 WTZR WTZZ 0.002 108 1.2 16 1.3 85.2 G ... #AR_L12WTWZ2070 WTZR WTZZ 0.002 94 1.2 20 1.3 78.7 R ... #AR_L12WTWZ2070 WTZR WTZZ 0.002 202 1.2 36 1.3 82.2 GR ... #AR_L12ZIZM2070 ZIM2 ZIMM 0.019 108 1.1 2 1.1 98.1 G ... #AR_L12-------------------------------------------------------------- ... -------Tot: 2 0.010 216 1.2 18 1.2 91.7 G ... #AR_L12Tot: 1 0.002 94 1.2 20 1.3 78.7 R ... #AR_L12Tot: 2 0.010 310 1.2 38 1.2 87.7 GR ... #AR_L12The solutions from the BPE are identical to the two manually processed solutions. Youcan compare the following two files for each strategy (e.g., with tkdiff):Filenames fromManual processing processed by the BPEStrategy: QIF: GAJO207Q.OUT GAJO2070_Q.OUTStrategy: direct L 1 /L 2 : WTWZ2071.OUT WTWZ2070_1.OUTIf you compare the number of ambiguity parameters in the GPSEST program outputwith the number of ambiguities in the GPSXTR summary files, the number of referenceambiguities that needs to be kept unresolved are considered.5.4 Daily GoalsAt the end of today’s session, you should have:1. used GPSEST for residual screening, created files: EDT10207.OUT,EDT10207.RES in your campaign’s OUT directory,2. screened the residual files from the above run using RESRMS: created filesRMS10207.SUM, RMS10207.LST, RMS10207.EDT, and RMS10207.OUT,3. used SATMRK to mark the identified outliers,4. used GPSEST for a first coordinate and troposphere estimation, created files:FLT10207.CRD and FLT10207.TRP,5. used GPSEST for QIF ambiguity resolution, created files: GAJO207Q.OUT,6. used GPSEST for direct SIGMA ambiguity resolution, created files:WTWZ2071.OUT,7. apply the ambiguity resolution to all baselines running a BPE,8. used GPSXTR to create a summary of the ambiguity resolution, created file:QIF10207.SUMProposal for Further ActivitiesEven if it is not needed for the processing progress of the regional network you may usesome time in this terminal session to have a look into the examples for “Epoch ParameterProcessing” (sections 7.2 for Kinematic Positioning and 7.3 for Zero Difference Processingfor Clock Estimation).Bernese GNSS Software, Version 5.2 Page 73
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