Date: Wed, 12 Jul 2000 09:30:28 -0700 (PDT) From: Robert F Meyer Message-Id: <200007121630.JAA14878@kalman.jpl.nasa.gov> To: IGSREPORT@IGSCB.JPL.NASA.GOV Subject: [IGSREPORT-7353] Wk 1067 JPL GNAAC Analysis Report Sender: owner-igsreport Precedence: bulk ****************************************************************************** IGS Electronic Report 12 Jul 09:32:06 PDT 2000 Message Number 7353 ****************************************************************************** Author: R F Meyer ****************************************************************************** GNAAC COMPARISON FROM JPL FOR GPS WEEK 1067 JUN 18, 2000 - JUN 24, 2000 ****************************************************************************** R F Meyer (Raytheon, Pasadena, CA); M B Heflin, J F Zumberge, D C Jefferson, M M Watkins, F H Webb (Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA) ***NOTE: Numerical processing problems with the COD data forced its elimination from this solution. We will re-submit results once the problem is determined and corrected. Solutions in SINEX format were obtained from COD, EMR, ESA, GFZ, JPL, NGS, and SIO. Each center was compared to each other center by estimating a 7-parameter Helmert transformation to minimize the least-squares coordinate residuals. The following table summarizes comparison results. The North, East, and Vertical WRMS values are given in mm for each pair. The number of common sites is given directly underneath the values for WRMS. The number underneath each center's name is the scale factor applied to the formal errors from that center. Transformation parameters for each pair are given at the end of the report. We also compute a free-network combination of solutions from all centers. Each solution is scaled and edited according to the results of pairwise comparisons. Then all free-network solutions are rigorously combined using their full covariance matrices. Sites common to all solutions are used to compare individual solutions with the combination and residuals are given in the first row of the comparison table. TABLE OF COMPARISON RESIDUALS (N E V in mm) -----------+---------+---------+---------+---------+---------+ emr esa gfz jpl ngs sio c+---------+---------+---------+---------+---------+---------+ o| 4.1 4.4| 3.4 3.7| 1.8 1.4| 1.6 1.0| 3.2 6.5| 1.4 2.3| m| 5.0 | 6.6 | 4.0 | 5.0 | 6.4 | 4.7 | b+ 19 | 19 | 19 | 19 | 19 | 19 | ++---------+---------+---------+---------+---------+---------+ emr | 7.6 8.2| 5.1 5.8| 3.6 5.9| 6.0 6.2| 4.5 5.7| | 11.5 | 8.5 | 7.5 | 10.5 | 9.7 | 5.0 | 29 | 40 | 40 | 42 | 52 | +---------+---------+---------+---------+---------+ esa | 5.0 5.2| 4.6 3.9| 5.2 6.6| 4.6 5.8| | 9.2 | 9.6 | 11.4 | 7.8 | 8.0 | 33 | 35 | 43 | 44 | +---------+---------+---------+---------+ gfz | 3.1 2.2| 5.2 6.5| 2.1 3.2| | 9.6 | 11.8 | 7.5 | 14.0 | 52 | 54 | 76 | +---------+---------+---------+ jpl | 4.9 6.0| 3.1 2.9| | 9.2 | 8.7 | 4.0 | 48 | 68 | +---------+---------+ ngs | 4.8 6.3| | 10.0 | 13.0 | 69 | +---------+ sio 3.0 EMR TO ESA TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .3275E+02 DOF = 80 CHI^2/DOF = .41 RX = .2590E-09 +- .2148E-09 rad RY = -.1126E-09 +- .1965E-09 rad RZ = .1535E-09 +- .3754E-09 rad TX = -.9767E-02 +- .1932E-02 m TY = -.3313E-03 +- .2503E-02 m TZ = -.2944E-01 +- .1693E-02 m S = .1268E-08 +- .4512E-09 parts ---------------------------------------- EMR TO GFZ TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .2720E+02 DOF = 113 CHI^2/DOF = .24 RX = .3530E-09 +- .1316E-09 rad RY = .1274E-09 +- .1261E-09 rad RZ = .2587E-09 +- .2442E-09 rad TX = -.6705E-02 +- .1268E-02 m TY = .2405E-02 +- .1461E-02 m TZ = -.2134E-01 +- .1124E-02 m S = .9173E-09 +- .3044E-09 parts ---------------------------------------- EMR TO JPL TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .2142E+02 DOF = 113 CHI^2/DOF = .19 RX = .6604E-10 +- .1291E-09 rad RY = .1760E-09 +- .1534E-09 rad RZ = .6509E-09 +- .1814E-09 rad TX = .6326E-04 +- .1436E-02 m TY = .2206E-02 +- .1309E-02 m TZ = -.7199E-02 +- .1446E-02 m S = -.2071E-09 +- .3200E-09 parts ---------------------------------------- EMR TO NGS TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .4191E+02 DOF = 119 CHI^2/DOF = .35 RX = .2284E-09 +- .1232E-09 rad RY = -.6314E-09 +- .1055E-09 rad RZ = -.2911E-09 +- .2717E-09 rad TX = .1380E-02 +- .1257E-02 m TY = -.1523E-02 +- .1569E-02 m TZ = -.7575E-01 +- .9044E-03 m S = -.9741E-09 +- .2776E-09 parts ---------------------------------------- EMR TO SIO TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .2797E+02 DOF = 149 CHI^2/DOF = .19 RX = .1109E-09 +- .1184E-09 rad RY = -.1393E-09 +- .1202E-09 rad RZ = -.1233E-08 +- .1847E-09 rad TX = -.8736E-02 +- .1065E-02 m TY = .1912E-02 +- .1199E-02 m TZ = -.6649E-01 +- .1013E-02 m S = -.5057E-09 +- .2396E-09 parts ---------------------------------------- ESA TO GFZ TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .8232E+02 DOF = 92 CHI^2/DOF = .89 RX = .1133E-09 +- .1265E-09 rad RY = .2338E-09 +- .9229E-10 rad RZ = -.1818E-10 +- .2189E-09 rad TX = .2992E-02 +- .1082E-02 m TY = .4666E-02 +- .1598E-02 m TZ = .6377E-02 +- .8410E-03 m S = -.1431E-09 +- .2788E-09 parts ---------------------------------------- ESA TO JPL TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .6210E+02 DOF = 98 CHI^2/DOF = .63 RX = -.2400E-09 +- .1104E-09 rad RY = .5547E-09 +- .1014E-09 rad RZ = .3396E-09 +- .1625E-09 rad TX = .8278E-02 +- .1081E-02 m TY = .3817E-02 +- .1300E-02 m TZ = .2281E-01 +- .1011E-02 m S = -.1640E-08 +- .2656E-09 parts ---------------------------------------- ESA TO NGS TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .9794E+02 DOF = 122 CHI^2/DOF = .80 RX = .2551E-09 +- .8966E-10 rad RY = -.4981E-09 +- .8876E-10 rad RZ = -.3522E-09 +- .1172E-09 rad TX = .8932E-02 +- .7003E-03 m TY = .1725E-02 +- .7279E-03 m TZ = -.4535E-01 +- .5950E-03 m S = -.2220E-08 +- .1487E-09 parts ---------------------------------------- ESA TO SIO TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .6003E+02 DOF = 125 CHI^2/DOF = .48 RX = -.1274E-09 +- .1323E-09 rad RY = .8990E-10 +- .1210E-09 rad RZ = -.1609E-08 +- .2156E-09 rad TX = -.1216E-03 +- .1180E-02 m TY = .4751E-02 +- .1403E-02 m TZ = -.3735E-01 +- .9474E-03 m S = -.1409E-08 +- .2592E-09 parts ---------------------------------------- GFZ TO JPL TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .7127E+02 DOF = 149 CHI^2/DOF = .48 RX = -.3531E-09 +- .8827E-10 rad RY = .1048E-09 +- .6642E-10 rad RZ = .4241E-09 +- .1482E-09 rad TX = .6164E-02 +- .7858E-03 m TY = -.1451E-02 +- .9746E-03 m TZ = .1510E-01 +- .6857E-03 m S = -.1147E-08 +- .1852E-09 parts ---------------------------------------- GFZ TO NGS TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .1693E+03 DOF = 155 CHI^2/DOF = 1.09 RX = -.3104E-10 +- .7915E-10 rad RY = -.6730E-09 +- .5110E-10 rad RZ = -.2563E-09 +- .1510E-09 rad TX = .6654E-02 +- .6104E-03 m TY = -.4483E-02 +- .8121E-03 m TZ = -.5382E-01 +- .4957E-03 m S = -.1778E-08 +- .1521E-09 parts ---------------------------------------- GFZ TO SIO TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .6663E+02 DOF = 221 CHI^2/DOF = .30 RX = -.2397E-09 +- .1051E-09 rad RY = -.2007E-09 +- .7820E-10 rad RZ = -.1308E-08 +- .1882E-09 rad TX = -.2510E-02 +- .8750E-03 m TY = -.1328E-02 +- .1042E-02 m TZ = -.4391E-01 +- .5978E-03 m S = -.1255E-08 +- .1717E-09 parts ---------------------------------------- JPL TO NGS TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .1171E+03 DOF = 137 CHI^2/DOF = .86 RX = .3036E-09 +- .7030E-10 rad RY = -.8031E-09 +- .6686E-10 rad RZ = -.6966E-09 +- .1134E-09 rad TX = .6719E-03 +- .7733E-03 m TY = -.3938E-02 +- .9422E-03 m TZ = -.6868E-01 +- .7059E-03 m S = -.7415E-09 +- .1822E-09 parts ---------------------------------------- JPL TO SIO TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .5822E+02 DOF = 197 CHI^2/DOF = .30 RX = .4556E-10 +- .9072E-10 rad RY = -.2547E-09 +- .8736E-10 rad RZ = -.1756E-08 +- .1356E-09 rad TX = -.8840E-02 +- .8915E-03 m TY = -.6575E-04 +- .9957E-03 m TZ = -.5900E-01 +- .6820E-03 m S = -.9108E-10 +- .1898E-09 parts ---------------------------------------- NGS TO SIO TRANSFORMATION PARAMETERS ---------------------------------------- CHI^2 = .1047E+03 DOF = 200 CHI^2/DOF = .52 RX = -.2554E-09 +- .9575E-10 rad RY = .5159E-09 +- .8715E-10 rad RZ = -.1175E-08 +- .1523E-09 rad TX = -.9297E-02 +- .8495E-03 m TY = .4648E-02 +- .1020E-02 m TZ = .8800E-02 +- .6388E-03 m S = .6484E-09 +- .1773E-09 parts ----------------------------------------