From : Claude Boucher and Zuheir Altamimi Subject: [IGSMAIL-170] IGS GPS station coordinates analysis Date: 11 JAN 1993 18:23:54 *********************************************************************** IGS Electronic Mail 11-JAN-1993 18:23:54 Message Number 170 *********************************************************************** From : Claude Boucher and Zuheir Altamimi Subject: IGS GPS station coordinates analysis ============================================= Dear Colleagues, Please find hereafter a preliminary analysis of IGS GPS station coordinates solutions available to us up today. Your comments, opinion and suggestions will be appreciated. The solutions concerned are : LABEL DESIGNATION COMMENTS ----- ---------------- -------------------------------------------------- PJ SSC(JPL) 92 P 02 based on a 3 month period from 01-jun-01-sep-1992 PR SSC(SIO) 92 P 03 based on the first 51 days of the IGS campaign (see IGSmail # 101) PC SSC(CSR) 92 P 03 fiducial free based on about 50 days centred on 1992.6 PB SSC(CODE)92 p 01 only European stations based on 115 3-Day solutions the provided coordinates refer to SLR/VLBI markers. PE SSC(EMR) 92 P 01 based on the period 04-aug-17-oct-1992. A global combination was performed incorporating the 5 above solutions with the following assumptions: - the original formal errors of the individual sets were modified in order to obtain statistically realistic combined solution. This was done using the formula : Sig = SQRT (A**2 + B**2.Sigf**2) where Sig is the input error and Sigf the original formal error. A and B are determined by an empirical estimation. The adopted values of A and B are: solution A(cm) B -------- ----- ----- PJ 0.010 2.5 PR 0.010 3.5 PC 0.010 3.5 PB 0.008 0.0 (formal error not provided) PE 0.010 3.0 - due to inconsistency between some solutions, the following stations were deweighted solution input sig. stations -------- ---------- ----------------------------- PR 0.100 m NYAL,STJO,KOKB PR 0.200 m HART,SANT,CANB,YAR1,MCMU,PAMA PR 0.050 m ALGO PC 0.100 m USUD,TAIW PC 0.200 m HART,SANT PC 0.030 m GOLD PE 0.200 SANT The results of this combination are given in the following Tables Table 1 : Transformation parameters from PJ to the other solutions Table 2 : Global statistic of the combination giving for each solution: N : number of points common to other solutions SP : unweighted 2-D horizontal RMS SU : unweighted vertical RMS WSX : weighted 3-D (X, Y, Z) RMS NSX : 3-D normalized RMS A and B : as defined above Table 3 : Residuals per site giving for each site: - DOMES Number, CDP number or the 4-char IGS abbreviation - and per solution, the following numbers: RX, RY, RZ : residuals in the geocentric frame NX, NY, NZ : normalized residuals RE, RN, RU : residuals in the local frame and the mean of these 3 type of residuals A comparison between this GPS combined solution and the ITRF91 was then performed. The corresponding results are given in Tables 4, 5 and 6. TABLE 1 : TRANSFORMATION PARAMETERS FROM SSC(JPL) 92 P 02 TO OTHER SOLUTIONS SOLUTION T1 T2 T3 D R1 R2 R3 cm cm cm (10**-8) .001" .001" .001" ------------------------------------------------------------------- SSC(SIO) 92 P 03 -2.5 6.3 6.2 0.13 -0.6 3.2 -6.8 0.6 0.6 0.5 0.07 0.3 0.2 0.2 SSC(CSR) 92 P 03 -5.6 20.1 -57.7 0.43 -4.1 0.9 -67.4 0.4 0.5 0.4 0.06 0.2 0.1 0.2 SSC(CODE) 92 P 01 2.0 0.4 7.1 0.01 -3.2 1.5 -8.1 1.7 2.9 1.7 0.21 0.8 0.7 0.7 SSC(EMR) 92 P 01 1.3 0.8 10.7 0.20 -1.7 2.2 -5.7 0.6 0.7 0.6 0.09 0.3 0.3 0.2 TABLE 2 : STATISTICS OF THE GPS COMBINED SOLUTION SOLUTION N SP SU WSX NSX A B cm cm cm cm ------------------------------------------------------------------------- SSC(JPL) 92 P 02 32 0.5 0.9 0.6 0.98 1.0 2.5 SSC(SIO) 92 P 03 32 6.6 7.0 1.2 1.23 1.0 3.5 SSC(CSR) 92 P 03 21 3.5 4.6 1.1 1.19 1.0 3.5 SSC(CODE) 92 P 01 10 0.3 0.6 0.4 0.79 0.8 0.0 SSC(EMR) 92 P 01 15 1.2 4.4 0.9 0.88 1.0 3.0 TABLE 3 : RESIDUALS PER SITE FOR THE GPS COMBINED SOLUTION SITE NAME: TROMSO DOMES CDP RX RY RZ NX NY NZ RE RN RU NUMBER NUM. * m m m m m m --------- ---- -- ------ ------ ------ ---- ---- ---- ------ ------ ------ 10302M002 7602 GA 0.000 0.000 0.000 0.1 0.0 0.1 0.000 0.000 0.000 10302M002 7602 PB -0.009 -0.002 -0.008 -1.1 -0.3 -1.0 0.001 0.006 -0.011 10302M003 TROM PJ 0.007 -0.002 0.017 0.7 -0.2 1.7 -0.004 0.000 0.018 10302M003 TROM PE 0.009 0.002 0.020 0.7 0.1 1.3 -0.001 -0.001 0.022 10302M003 TROM GA -0.001 0.000 -0.001 -0.4 -0.1 -0.4 -0.001 -0.001 0.000 10302M003 TROM PR 0.001 0.007 -0.029 0.1 0.6 -1.9 0.006 -0.013 -0.026 -------------------- -------------- ------------- ------ 0.010 1.4 0.005 0.016 NY-ALESUND 10317M001 NYAL PR -0.013 0.014 -0.057 -0.1 0.1 -0.6 0.016 -0.002 -0.058 10317M001 NYAL PJ 0.000 0.006 0.009 0.0 0.6 0.9 0.006 0.001 0.009 10317M001 NYAL PC 0.000 -0.008 -0.012 0.0 -0.7 -1.0 -0.007 -0.001 -0.012 -------------------- -------------- ------------- ------ 0.021 0.9 0.008 0.035 ONSALA 10402M004 ONSA PR 0.008 0.003 -0.006 0.6 0.2 -0.4 0.001 -0.010 -0.001 10402M004 ONSA PC -0.009 -0.001 -0.005 -0.8 -0.1 -0.4 0.001 0.005 -0.009 10402M004 ONSA PJ 0.002 0.002 0.009 0.2 0.2 0.9 0.002 0.003 0.009 10402M004 ONSA GA 0.000 0.000 0.000 0.0 -0.1 -0.1 0.000 0.000 0.000 10402S002 7213 PB 0.000 -0.002 -0.001 0.0 -0.3 -0.2 -0.002 -0.001 -0.001 10402S002 7213 GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 -------------------- -------------- ------------- ------ 0.004 0.6 0.003 0.005 METSAHOVI 10503M002 7601 PB 0.004 0.003 0.012 0.5 0.4 1.5 0.002 0.002 0.013 10503M002 7601 GA 0.000 0.000 0.000 -0.1 -0.1 -0.2 0.000 0.000 0.000 10503S011 METS PR 0.016 0.007 0.012 1.4 0.6 0.8 0.000 -0.009 0.020 10503S011 METS GA 0.001 0.001 0.003 0.2 0.2 0.8 0.000 0.003 0.000 10503S011 METS PJ -0.017 -0.011 -0.024 -1.7 -1.1 -2.4 -0.002 0.005 -0.031 -------------------- -------------- ------------- ------ 0.010 1.7 0.004 0.017 GRAZ 11001M002 GRAZ PR 0.005 -0.002 0.008 0.4 -0.2 0.6 -0.003 0.002 0.009 11001M002 GRAZ GA 0.000 0.000 0.000 -0.1 0.0 -0.1 0.000 0.000 0.000 11001S002 7839 PB -0.002 0.001 -0.002 -0.2 0.1 -0.3 0.001 -0.001 -0.003 11001S002 7839 GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 -------------------- -------------- ------------- ------ 0.003 0.4 0.001 0.005 MATERA 12734M008 MATE PJ -0.003 0.006 0.004 -0.3 0.6 0.4 0.007 0.004 0.001 12734M008 MATE PR 0.007 -0.011 0.014 0.6 -1.0 1.0 -0.013 0.009 0.012 12734M008 MATE GA 0.000 0.000 -0.001 0.0 0.0 -0.3 0.000 -0.001 -0.001 12734S001 7939 GA 0.000 0.000 0.000 0.0 0.0 0.1 0.000 0.000 0.000 12734S001 7939 PB -0.001 0.001 -0.006 -0.1 0.1 -0.8 0.001 -0.004 -0.005 -------------------- -------------- ------------- ------ 0.006 0.8 0.006 0.006 HERSTMONCEUX 13212M007 HERS GA 0.001 0.000 0.000 0.2 0.0 0.1 0.000 0.000 0.000 13212M007 HERS PR -0.002 0.001 -0.009 -0.1 0.1 -0.4 0.001 -0.004 -0.008 13212M007 HERS PJ -0.006 -0.001 -0.002 -0.6 -0.1 -0.2 -0.001 0.003 -0.005 13212S001 7840 PB 0.004 0.000 0.003 0.5 0.1 0.3 0.000 -0.001 0.005 13212S001 7840 GA 0.000 0.000 0.000 -0.1 0.0 0.0 0.000 0.000 0.000 -------------------- -------------- ------------- ------ 0.003 0.4 0.002 0.005 MADRID 13407S010 1565 PB 0.000 -0.002 0.000 0.0 -0.2 0.0 -0.002 0.000 0.000 13407S010 1565 GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 13407S012 MADR GA 0.000 0.000 0.000 0.0 -0.1 0.0 0.000 0.000 0.000 13407S012 MADR PC -0.006 0.001 0.003 -0.6 0.1 0.2 0.001 0.006 -0.003 13407S012 MADR PJ 0.005 0.000 -0.002 0.5 0.0 -0.2 0.000 -0.005 0.002 13407S012 MADR PR 0.002 0.005 0.005 0.1 0.4 0.3 0.005 0.002 0.004 13407S012 MADR PE -0.001 -0.003 -0.005 -0.1 -0.2 -0.3 -0.004 -0.003 -0.004 -------------------- -------------- ------------- ------ 0.003 0.4 0.003 0.003 KOOTWIJK 13504M002 8833 GA 0.000 0.000 0.000 -0.1 0.0 0.0 0.000 0.000 0.000 13504M002 8833 PB 0.004 -0.001 0.002 0.5 -0.2 0.3 -0.002 -0.002 0.004 13504M003 KOSG PJ -0.004 0.000 -0.003 -0.4 0.0 -0.3 0.000 0.002 -0.005 13504M003 KOSG GA 0.001 0.000 0.000 0.2 -0.1 0.1 0.001 0.000 0.000 13504M003 KOSG PR -0.001 0.002 -0.014 0.0 0.1 -0.9 0.002 -0.008 -0.011 13504M003 KOSG PC -0.002 0.002 0.007 -0.2 0.2 0.6 0.002 0.006 0.004 -------------------- -------------- ------------- ------ 0.004 0.6 0.003 0.005 WETTZELL 14201S004 7224 GA 0.000 0.000 0.000 -0.1 0.0 0.0 0.000 0.000 0.000 14201S004 7224 PB 0.004 -0.002 -0.002 0.4 -0.2 -0.2 -0.003 -0.003 0.001 14201S020 WETT PR 0.007 -0.005 -0.002 0.6 -0.4 -0.1 -0.007 -0.005 0.002 14201S020 WETT PE -0.005 0.001 0.010 -0.4 0.1 0.6 0.002 0.010 0.005 14201S020 WETT PC -0.006 0.006 0.000 -0.6 0.5 0.0 0.007 0.004 -0.003 14201S020 WETT PJ -0.002 0.001 0.000 -0.2 0.2 0.0 0.002 0.001 -0.001 14201S020 WETT GA 0.001 0.000 0.000 0.2 -0.1 -0.1 -0.001 0.000 0.000 -------------------- -------------- ------------- ------ 0.004 0.5 0.004 0.002 USUDA 21729S003 USUD PR 0.015 -0.013 0.015 0.9 -0.8 0.7 0.000 0.024 -0.007 21729S003 USUD PJ -0.007 0.005 -0.003 -0.6 0.4 -0.3 0.001 -0.007 0.005 21729S003 USUD PC 0.027 0.061 -0.096 0.3 0.6 -1.0 -0.064 -0.090 -0.040 -------------------- -------------- ------------- ------ 0.040 1.1 0.046 0.024 TAIPEI 23601M001 TAIW PR -0.014 -0.006 0.040 -0.7 -0.3 2.0 0.015 0.035 0.019 23601M001 TAIW PC 0.052 0.060 -0.108 0.5 0.6 -1.1 -0.075 -0.108 -0.024 23601M001 TAIW PJ 0.004 0.001 -0.009 0.3 0.1 -0.9 -0.004 -0.008 -0.005 -------------------- -------------- ------------- ------ 0.047 1.5 0.056 0.018 HARTEBEESTHOEK 30302M002 HART PC -0.156 0.044 0.047 -0.8 0.2 0.2 0.112 -0.009 -0.127 30302M002 HART PJ 0.002 0.005 0.001 0.2 0.4 0.1 0.003 0.003 0.003 30302M002 HART PR 0.290 0.111 0.146 1.4 0.6 0.7 -0.037 0.265 0.214 30302M002 HART PE -0.031 -0.051 -0.006 -0.7 -1.5 -0.3 -0.030 -0.028 -0.043 -------------------- -------------- ------------- ------ 0.112 1.2 0.104 0.126 MASPALOMAS 31303M001 MASP PB -0.004 0.004 0.003 -0.5 0.5 0.4 0.003 0.005 -0.003 31303M001 MASP PJ 0.022 -0.005 -0.007 2.0 -0.5 -0.7 0.001 -0.017 0.016 31303M001 MASP PC -0.021 -0.006 -0.008 -1.8 -0.5 -0.7 -0.011 0.002 -0.020 31303M001 MASP PR 0.007 0.004 0.017 0.5 0.3 1.1 0.006 0.012 0.013 -------------------- -------------- ------------- ------ 0.011 1.6 0.009 0.014 ST. JOHNS 40101M001 STJO PC 0.001 -0.010 0.011 0.1 -0.9 0.9 -0.005 0.001 0.014 40101M001 STJO PR -0.056 0.022 -0.038 -0.6 0.2 -0.4 -0.031 0.012 -0.063 40101M001 STJO PJ -0.003 0.005 -0.006 -0.3 0.5 -0.6 0.000 0.000 -0.009 40101M001 STJO PE 0.005 0.004 -0.001 0.4 0.4 -0.1 0.007 0.000 -0.001 -------------------- -------------- ------------- ------ 0.021 0.8 0.012 0.033 ALGONQUIN 40104M002 ALGO PR -0.049 0.009 -0.041 -1.0 1.8 -0.8 -0.046 -0.015 -0.042 40104M002 ALGO PC 0.011 -0.019 0.010 0.9 -1.7 0.8 0.007 -0.008 0.021 40104M002 ALGO PJ -0.006 -0.013 -0.003 -0.6 -1.3 -0.3 -0.009 -0.011 0.006 40104M002 ALGO PE 0.001 -0.009 -0.003 0.1 -0.8 -0.2 -0.001 -0.009 0.005 -------------------- -------------- ------------- ------ 0.021 1.7 0.018 0.024 PENTICTON 40105M002 DRAO PJ 0.003 0.002 0.005 0.3 0.2 0.5 0.002 0.006 0.001 40105M002 DRAO PR -0.007 -0.012 -0.004 -0.6 -1.0 -0.3 0.000 -0.013 0.006 40105M002 DRAO PE 0.002 0.010 -0.006 0.2 0.8 -0.4 -0.003 0.004 -0.011 -------------------- -------------- ------------- ------ 0.007 0.9 0.006 0.007 YELLOWKNIFE 40127M003 YELL PC 0.011 0.001 0.011 1.0 0.1 1.0 0.010 0.011 0.007 40127M003 YELL PJ 0.003 -0.003 0.011 0.3 -0.3 1.1 0.004 0.004 0.011 40127M003 YELL PE -0.002 0.003 0.007 -0.2 0.2 0.4 -0.003 0.005 0.005 40127M003 YELL PR -0.015 0.001 -0.033 -1.3 0.1 -2.7 -0.014 -0.020 -0.026 -------------------- -------------- ------------- ------ 0.012 1.7 0.011 0.015 ALBERT HEAD 40129M003 ALBH PE -0.004 -0.001 0.002 -0.4 -0.1 0.1 -0.003 -0.001 0.004 40129M003 ALBH PJ 0.003 0.001 -0.001 0.3 0.1 -0.1 0.002 0.001 -0.002 -------------------- -------------- ------------- ------ 0.002 0.3 0.002 0.003 PASADENA 40400M006 JPL1 PJ -0.001 0.003 -0.002 -0.1 0.3 -0.2 -0.002 0.000 -0.003 40400M006 JPL1 PR 0.001 -0.007 0.003 0.1 -0.5 0.2 0.005 0.000 0.007 40400M007 JP1Q PJ 0.003 0.007 -0.006 0.3 0.7 -0.6 -0.001 -0.001 -0.010 40400M007 JP1Q PR -0.005 -0.016 0.014 -0.4 -1.1 1.0 0.004 0.003 0.022 -------------------- -------------- ------------- ------ 0.007 0.9 0.003 0.013 GOLDSTONE 40405S028 GOLD PC 0.009 -0.039 0.046 0.3 -1.3 1.5 0.025 0.020 0.051 40405S028 GOLD PJ 0.001 0.004 -0.004 0.1 0.4 -0.4 -0.001 -0.001 -0.006 40405S028 GOLD PR -0.003 0.002 -0.002 -0.2 0.2 -0.1 -0.003 -0.001 -0.002 40405S031 GOLQ PE 0.004 0.011 -0.015 0.3 0.7 -1.0 -0.002 -0.006 -0.018 40405S031 GOLQ PJ 0.002 0.003 -0.001 0.2 0.3 -0.1 0.001 0.001 -0.004 40405S031 GOLQ PR -0.007 -0.017 0.016 -0.6 -1.1 1.1 0.001 0.003 0.024 -------------------- -------------- ------------- ------ 0.016 1.2 0.010 0.024 PINYON FLATS 40407M002 PIN1 PR 0.002 -0.002 0.004 0.2 -0.1 0.3 0.002 0.003 0.003 40407M002 PIN1 PJ -0.001 0.001 -0.003 -0.1 0.1 -0.3 -0.002 -0.002 -0.002 40407M003 PN1Q PR -0.009 -0.012 0.011 -0.7 -0.8 0.9 -0.003 0.001 0.018 40407M003 PN1Q PC 0.015 0.002 0.004 1.4 0.2 0.4 0.013 0.008 -0.004 40407M003 PN1Q PJ -0.006 0.004 -0.011 -0.6 0.4 -1.1 -0.007 -0.009 -0.007 -------------------- -------------- ------------- ------ 0.007 1.0 0.006 0.009 FAIRBANKS 40408M001 FAIR PJ 0.003 -0.003 0.014 0.3 -0.3 1.4 0.004 0.007 0.012 40408M001 FAIR PC 0.006 0.011 -0.003 0.5 1.0 -0.3 -0.006 0.008 -0.007 40408M001 FAIR PR -0.006 -0.006 -0.032 -0.5 -0.5 -2.1 0.002 -0.022 -0.025 40408M001 FAIR PE -0.005 -0.004 0.010 -0.4 -0.2 0.6 0.000 -0.001 0.012 -------------------- -------------- ------------- ------ 0.012 1.4 0.009 0.016 KAUAI 40424M004 KOKB PC 0.007 0.000 -0.001 0.6 0.0 -0.1 0.003 0.001 -0.006 40424M004 KOKB PJ -0.009 0.000 0.004 -0.9 0.0 0.4 -0.003 0.001 0.010 40424M004 KOKB PE 0.026 0.004 -0.043 1.0 0.2 -1.3 0.005 -0.030 -0.040 40424M004 KOKB PR -0.050 -0.018 0.076 -0.5 -0.2 0.8 0.000 0.051 0.078 -------------------- -------------- ------------- ------ 0.031 1.1 0.021 0.044 LA JOLLA 40460M001 SIO1 PJ -0.001 0.001 0.000 -0.1 0.1 0.0 -0.002 0.000 0.000 40460M001 SIO1 PR 0.003 -0.001 0.000 0.2 -0.1 0.0 0.004 0.000 -0.001 -------------------- -------------- ------------- ------ 0.001 0.2 0.002 0.001 SANTIAGO 41705M003 SANT PJ -0.001 0.001 0.000 -0.1 0.0 0.0 -0.001 -0.001 0.000 41705M003 SANT PE 0.054 -0.124 -0.064 0.3 -0.6 -0.3 0.010 0.019 0.148 41705M003 SANT PC -0.003 0.150 0.037 0.0 0.8 0.2 0.047 -0.046 -0.140 41705M003 SANT PR 0.225 -0.201 0.150 1.1 -1.0 0.7 0.146 0.270 0.140 -------------------- -------------- ------------- ------ 0.115 1.0 0.111 0.124 CANBERRA 50103S017 CANB PJ 0.003 0.000 0.009 0.3 0.0 0.9 -0.001 0.006 -0.007 50103S017 CANB PE -0.022 -0.013 0.010 -0.8 -0.4 0.3 0.023 0.015 0.004 50103S017 CANB PR 0.041 -0.004 0.188 0.2 0.0 0.9 -0.017 0.132 -0.139 50103S017 CANB PC 0.002 0.004 -0.024 0.1 0.2 -1.6 -0.005 -0.019 0.014 -------------------- -------------- ------------- ------ 0.057 1.1 0.049 0.070 YARRAGADEE 50107M004 YAR1 PE -0.006 -0.006 -0.004 -0.3 -0.2 -0.2 0.008 -0.005 0.000 50107M004 YAR1 PR 0.085 0.079 0.163 0.4 0.4 0.8 -0.111 0.159 -0.048 50107M004 YAR1 PJ 0.004 -0.002 0.004 0.3 -0.2 0.4 -0.003 0.002 -0.005 50107M004 YAR1 PC -0.005 0.006 -0.012 -0.3 0.3 -0.7 0.002 -0.007 0.012 -------------------- -------------- ------------- ------ 0.058 0.7 0.069 0.025 MC MURDO 66001M001 MCMU PR 0.089 -0.051 0.150 0.4 -0.3 0.8 0.029 -0.064 -0.167 66001M001 MCMU PJ 0.002 -0.007 -0.003 0.2 -0.7 -0.2 0.006 -0.004 0.002 66001M001 MCMU PC -0.008 0.036 0.004 -0.4 1.6 0.3 -0.034 0.016 -0.001 -------------------- -------------- ------------- ------ 0.062 1.1 0.033 0.096 PAMATAI 92201M003 PAMA PJ 0.006 -0.010 0.003 0.5 -0.9 0.3 0.012 0.003 -0.001 92201M003 PAMA PC -0.013 0.026 -0.004 -0.8 1.5 -0.4 -0.029 -0.005 -0.001 92201M003 PAMA PR -0.086 -0.194 0.108 -0.4 -1.0 0.5 0.123 0.155 0.132 -------------------- -------------- ------------- ------ 0.080 1.3 0.082 0.076 _____________________________________________________________________________ (*) PJ: SSC(JPL) 92 P 02 PR: SSC(SIO) 92 P 03 PC: SSC(CSR) 92 P 03 PB: SSC(CODE) 92 P 01 PE: SSC(EMR) 92 P 01 GA: LOCAL TIE TABLE 4 : TRANSFORMATION PARAMETERS FROM ITRF91 TO GPS COMBINED SOLUTION SOLUTION T1 T2 T3 D R1 R2 R3 cm cm cm (10**-8) .001" .001" .001" ------------------------------------------------------------------- -0.2 2.0 -8.0 -0.16 3.0 -2.4 6.4 0.5 0.5 0.4 0.06 0.2 0.2 0.2 TABLE 5 : STATISTICS OF THE COMPARISON BETWEEN THE ITRF91 AND THE GPS COMBINED SOLUTION SOLUTION N SP SU WSX NSX A B cm cm cm cm ------------------------------------------------------------------------- ITRF91 36 4.6 2.6 1.1 1.25 0.0 1.0 GPS COMBINED SOLUTION 33 0.6 0.8 0.6 0.92 0.0 2.0 TABLE 6 : RESIDUALS PER SITE OF THE COMPARISON BETWEEN THE ITRF91 AND THE GPS COMBINED SOLUTION SITE NAME: TROMSO DOMES CDP RX RY RZ NX NY NZ RE RN RU NUMBER NUM. * m m m m m m --------- ---- -- ------ ------ ------ ---- ---- ---- ------ ------ ------ 10302M002 7602 CI 0.002 -0.015 0.006 0.1 -0.9 0.3 -0.015 0.005 0.004 10302M002 7602 PI -0.001 0.007 -0.002 -0.1 0.6 -0.2 0.007 -0.002 -0.001 10302M003 TROM CI 0.001 -0.016 0.008 0.1 -0.9 0.4 -0.016 0.007 0.006 10302M003 TROM PI 0.000 0.007 -0.003 0.0 0.6 -0.2 0.007 -0.003 -0.002 -------------------- -------------- ------------- ------ 0.008 0.9 0.009 0.004 NY-ALESUND 10317M001 NYAL PI 0.002 0.000 -0.001 0.1 0.0 0.0 -0.001 -0.002 0.000 10317M001 NYAL CI -0.006 0.001 0.001 -0.3 0.0 0.1 0.002 0.006 0.000 -------------------- -------------- ------------- ------ 0.003 0.2 0.003 0.000 ONSALA 10402S002 7213 CI 0.002 -0.002 0.007 0.2 -0.2 0.6 -0.002 0.003 0.007 10402S002 7213 PI -0.001 0.002 -0.004 -0.1 0.2 -0.4 0.002 -0.001 -0.004 -------------------- -------------- ------------- ------ 0.004 0.6 0.002 0.006 METSAHOVI 10503M002 7601 CI 0.015 -0.003 0.009 0.6 -0.2 0.3 -0.009 -0.006 0.014 10503M002 7601 PI -0.004 0.001 -0.001 -0.3 0.1 -0.1 0.003 0.002 -0.003 -------------------- -------------- ------------- ------ 0.007 0.7 0.006 0.010 GRAZ 11001S002 7839 PI 0.004 -0.011 -0.001 0.2 -0.8 -0.1 -0.012 -0.001 -0.001 11001S002 7839 CI -0.004 0.015 0.002 -0.2 0.9 0.1 0.015 0.001 0.001 -------------------- -------------- ------------- ------ 0.008 1.0 0.010 0.001 MATERA 12734M007 GIG CI 0.007 0.009 -0.007 0.5 0.7 -0.5 0.006 -0.011 0.003 12734M007 GIG GA 0.000 0.000 0.000 0.0 -0.1 0.0 0.000 0.000 0.000 12734M008 MATE PI -0.006 -0.009 0.005 -0.5 -0.7 0.4 -0.007 0.009 -0.003 12734M008 MATE GA 0.000 0.001 0.000 0.1 0.2 -0.1 0.000 0.000 -0.001 12734S001 7939 CI 0.004 0.007 -0.005 0.3 0.6 -0.3 0.006 -0.007 0.001 12734S001 7939 PI -0.004 -0.008 0.005 -0.3 -0.7 0.3 -0.007 0.007 -0.001 -------------------- -------------- ------------- ------ 0.005 0.9 0.006 0.002 HERSTMONCEUX 13212S001 7840 CI 0.009 0.008 0.003 0.6 0.6 0.2 0.008 -0.005 0.008 13212S001 7840 PI -0.006 -0.006 -0.001 -0.5 -0.5 -0.1 -0.006 0.004 -0.005 -------------------- -------------- ------------- ------ 0.006 0.9 0.006 0.007 MADRID 13407S010 1565 CI 0.015 -0.007 0.002 0.8 -0.4 0.1 -0.006 -0.008 0.013 13407S010 1565 PI -0.004 0.002 -0.001 -0.4 0.2 -0.1 0.002 0.002 -0.003 13407S012 MADR CI 0.013 -0.007 0.001 0.7 -0.4 0.1 -0.006 -0.008 0.012 13407S012 MADR PI -0.003 0.002 0.000 -0.3 0.2 0.0 0.002 0.002 -0.003 -------------------- -------------- ------------- ------ 0.007 0.7 0.005 0.009 KOOTWIJK 13504M002 8833 CI -0.008 -0.002 -0.011 -0.3 -0.1 -0.4 -0.001 0.000 -0.014 13504M002 8833 PI 0.001 0.000 0.002 0.1 0.0 0.2 0.000 0.000 0.002 13504M003 KOSG CI -0.008 -0.002 -0.012 -0.3 -0.1 -0.4 -0.001 -0.001 -0.015 13504M003 KOSG PI 0.001 0.000 0.002 0.1 0.0 0.2 0.000 0.000 0.002 -------------------- -------------- ------------- ------ 0.006 0.5 0.001 0.010 ZIMMERWALD 14001S001 7810 CI -0.001 0.004 -0.009 -0.1 0.2 -0.4 0.004 -0.006 -0.007 14001S001 7810 PI 0.001 -0.004 0.005 0.1 -0.2 0.3 -0.004 0.003 0.004 -------------------- -------------- ------------- ------ 0.005 0.5 0.004 0.006 WETTZELL 14201M006 GIG CI -0.005 -0.003 0.003 -0.4 -0.3 0.2 -0.002 0.006 -0.001 14201M006 GIG GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 14201S004 7224 PI 0.005 0.003 -0.001 0.5 0.3 -0.1 0.002 -0.005 0.002 14201S004 7224 CI -0.005 -0.004 0.002 -0.5 -0.4 0.2 -0.003 0.005 -0.002 14201S020 WETT PI 0.004 0.003 -0.002 0.4 0.3 -0.2 0.002 -0.005 0.002 14201S020 WETT GA 0.000 0.000 0.000 -0.1 -0.1 0.1 0.000 0.000 0.000 -------------------- -------------- ------------- ------ 0.003 0.5 0.003 0.001 USUDA 21729S003 USUD CI -0.031 -0.229 0.115 -0.2 -1.1 0.6 0.191 0.169 -0.037 21729S003 USUD PI 0.000 0.001 -0.001 0.0 0.1 0.0 -0.001 -0.001 0.000 -------------------- -------------- ------------- ------ 0.105 1.0 0.128 0.026 JOHANNESBURG 30302M002 HART GA 0.001 0.001 0.000 0.2 0.2 0.0 -0.001 0.000 0.000 30302M002 HART PI -0.007 -0.017 0.008 -0.3 -0.9 0.4 -0.012 0.001 -0.016 30302M002 HART CI -0.042 0.003 -0.028 -1.2 0.1 -0.8 0.022 -0.041 -0.020 30302S001 7232 CI 0.031 0.029 0.000 1.2 1.2 0.0 0.011 0.018 0.037 30302S001 7232 GA 0.000 0.000 0.000 -0.1 -0.1 0.0 0.000 0.000 0.000 -------------------- -------------- ------------- ------ 0.018 1.3 0.017 0.020 ALGONQUIN 40104M002 ALGO CI -0.007 -0.005 -0.002 -0.8 -0.5 -0.2 -0.008 -0.004 0.001 40104M002 ALGO PI 0.013 0.002 0.003 1.0 0.3 0.2 0.013 0.002 0.002 -------------------- -------------- ------------- ------ 0.007 1.2 0.008 0.002 PENTICTON 40105M001 7283 CI 0.013 0.029 -0.039 0.6 0.9 -1.0 -0.003 -0.002 -0.051 40105M001 7283 GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 40105M002 DRAO GA 0.000 0.000 0.000 0.1 0.1 -0.1 0.000 0.000 0.000 40105M002 DRAO PI -0.004 -0.004 0.004 -0.4 -0.4 0.3 -0.002 -0.002 0.007 -------------------- -------------- ------------- ------ 0.015 0.9 0.002 0.026 YELLOWKNIFE 40127M003 YELL PI 0.002 0.008 -0.001 0.2 0.6 -0.1 -0.002 0.007 -0.004 40127M003 YELL CI -0.006 -0.026 0.002 -0.3 -1.2 0.1 0.005 -0.022 0.014 -------------------- -------------- ------------- ------ 0.011 1.1 0.012 0.010 VICTORIA 40129M002 PGC1 PI 0.006 0.016 -0.010 0.3 0.9 -0.5 -0.004 0.006 -0.019 40129M002 PGC1 CI -0.011 -0.029 0.021 -0.4 -1.2 0.8 0.007 -0.009 0.035 -------------------- -------------- ------------- ------ 0.017 1.5 0.007 0.028 PASADENA 40400M006 JPL1 PI 0.002 -0.023 0.011 0.2 -1.7 0.7 0.013 -0.002 0.022 40400M006 JPL1 CI -0.002 0.027 -0.011 -0.2 1.8 -0.7 -0.015 0.004 -0.025 -------------------- -------------- ------------- ------ 0.016 2.1 0.010 0.024 GOLDSTONE 40405S028 GOLD PI 0.002 0.013 0.007 0.1 0.8 0.5 -0.004 0.013 -0.006 40405S028 GOLD CI -0.003 -0.011 -0.009 -0.2 -0.8 -0.6 0.003 -0.014 0.004 -------------------- -------------- ------------- ------ 0.008 1.1 0.010 0.005 PINYON FLATS 40407M002 PIN1 PI 0.005 -0.012 -0.005 0.3 -0.8 -0.3 0.010 -0.009 0.005 40407M002 PIN1 CI -0.004 0.012 0.007 -0.3 0.8 0.4 -0.009 0.011 -0.004 -------------------- -------------- ------------- ------ 0.008 1.0 0.010 0.005 FAIRBANKS 40408M001 FAIR CI 0.008 0.003 -0.007 0.8 0.3 -0.6 0.002 0.005 -0.010 40408M001 FAIR PI -0.007 -0.004 0.007 -0.7 -0.3 0.6 -0.001 -0.004 0.010 -------------------- -------------- ------------- ------ 0.006 1.1 0.003 0.010 KAUAI 40424M004 KOKB PI 0.002 0.012 -0.003 0.1 0.9 -0.2 -0.011 -0.001 -0.007 40424M004 KOKB CI -0.001 -0.009 0.003 -0.1 -0.8 0.2 0.008 0.002 0.005 -------------------- -------------- ------------- ------ 0.006 1.0 0.007 0.006 LA JOLLA 40460M001 SIO1 CI -0.020 0.025 -0.002 -0.8 1.1 -0.1 -0.030 0.006 -0.012 40460M001 SIO1 PI 0.008 -0.015 0.001 0.5 -0.8 0.0 0.014 -0.005 0.009 -------------------- -------------- ------------- ------ 0.015 1.3 0.017 0.011 RICHMOND 40499M002 7295 PI 0.008 -0.006 -0.017 0.4 -0.3 -1.0 0.007 -0.019 -0.001 40499M002 7295 CI -0.002 0.001 0.006 -0.2 0.1 0.6 -0.002 0.007 0.001 -------------------- -------------- ------------- ------ 0.008 1.0 0.011 0.001 SANTIAGO 41705M001 7400 CI -0.253 -0.032 -0.020 -1.3 -0.2 -0.1 -0.250 -0.046 -0.034 41705M001 7400 GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 41705M002 GIG CI -0.017 0.006 0.016 -0.5 0.2 0.5 -0.014 0.007 -0.018 41705M002 GIG GA 0.000 0.000 0.000 0.0 0.0 -0.1 0.000 0.000 0.000 41705M003 SANT PI -0.006 0.003 0.000 -0.3 0.1 0.0 -0.004 -0.002 -0.004 41705M003 SANT GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 41705S006 1404 GA 0.000 0.000 0.000 -0.1 0.0 0.1 0.000 0.000 0.000 41705S006 1404 CI 0.029 -0.017 -0.017 1.0 -0.4 -0.5 0.022 -0.001 0.031 -------------------- -------------- ------------- ------ 0.053 0.8 0.064 0.018 CANBERRA 50103S010 1545 GA 0.000 0.000 0.000 0.0 0.1 -0.1 0.000 0.000 0.000 50103S010 1545 CI 0.021 -0.036 0.036 0.8 -1.5 1.5 0.021 0.009 -0.051 50103S017 CANB PI -0.007 0.016 -0.012 -0.5 1.0 -0.9 -0.010 -0.002 0.019 50103S017 CANB GA 0.000 -0.001 0.001 0.1 -0.2 0.2 0.000 0.001 0.000 -------------------- -------------- ------------- ------ 0.017 1.5 0.009 0.027 YARRAGADEE 50107M004 YAR1 CI -0.003 0.001 -0.017 -0.2 0.1 -0.9 0.003 -0.014 0.010 50107M004 YAR1 PI 0.003 -0.001 0.012 0.2 -0.1 0.7 -0.002 0.010 -0.007 -------------------- -------------- ------------- ------ 0.009 1.0 0.009 0.009 HOBART 50116S002 7242 GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 50116S002 7242 CI -0.016 -0.052 0.128 -0.2 -0.5 1.3 0.053 0.085 -0.097 50116S004 HOBA PI 0.002 0.008 -0.012 0.1 0.2 -0.4 -0.007 -0.007 0.010 50116S004 HOBA GA 0.000 0.000 0.000 0.0 0.0 0.0 0.000 0.000 0.000 -------------------- -------------- ------------- ------ 0.040 0.8 0.036 0.049 _____________________________________________________________________________ (*) CI: ITRF91 PI: IGS GPS COMBINED SOLUTION GA: LOCAL TIE