From D Mon Feb 27 14:50:10 1995 From: D (D) Date: Mon, 27 Feb 1995 14:50:10 PST Subject: [IGSREPORT-1589] Wk 0788 JPL Analysis Report Message-ID: ****************************************************************************** IGS Electronic Report Mon Feb 27 14:50:10 PST 1995 Message Number 1589 ****************************************************************************** Author: D C Jefferson Subject: Wk 0788 JPL Analysis Report ****************************************************************************** JPL ANALYSIS REPORT GPS-WEEK 0788 (DAYS 43-49, DATES 1995 Feb 12 - Feb 18) ****************************************************************************** Submitted by the JPL IGS/FLINN Analysis Team: J F Zumberge, D C Jefferson, M B Heflin, M M Watkins, F H Webb all at the Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109. Files listed below are available in Unix compressed format and can be retrieved using anonymous ftp to sideshow.jpl.nasa.gov (128.149.70.41), directory pub/jpligsac/0788. These files have also been sent to the CDDIS. ______________________________________________________________________________ filename contents ______________________________________________________________________________ jpl07887.sum This text file. jpl07887.erp Earth rotation parameters for GPS week 788. jpl0788[0-6].sp3 GPS ephemerides for GPS week 788, sp3 format. ______________________________________________________________________________ According to the file nanu1995.mes obtained from the IGS CBIS, PRN06 was declared unusable from 03:48 until 09:23 UT on day 047 (Feb 16) due to repositioning. Convergence of the nominal orbit for this satellite exceeded our tolerance on this and the previous day as well, and was excluded from both days' analyses. Beginning day 049 (Feb 18), we have slightly modified our method of choosing which sites are used in determining the GPS satellite orbits. We still use a total of 32, however only the first 29 are selected in the manner described in IGS Report No. 1267 (jpl07677.sum). The remaining 3 are chosen at random. This is being done in order to allow all the sites that we analyze to participate in the global solution at least several times over a year, providing free-network (unconstrained) solutions for these stations. Also beginning this week, we analyze data from two existing sites not previously included. These are JOZE (Jozefoslaw, Poland) and UPAD (University of Padova, Italy). The following nominal coordinates were assumed: JOZE: X = 3664930.8493 m, Y = 1409139.9328 m, Z = 5009574.8323 m UPAD: X = 4389524.8859 m, Y = 923233.6097 m, Z = 4519271.5894 m Due to a software bug, the estimated yaw rates that have been published in /pub/jpligsac on node 128.149.70.41 since September 1994 are in error. They do not reflect the actual estimated values used in our processing. The bug was such that the posted values are likely to be closer to the a-priori value than the true estimates. Thus, the actual variability in the yaw rates is under-represented. Unfortunately it is impossible to recover the correct values at this point in time. This bug has been fixed now and the yaw rate values posted for day 047 (Feb 16, 1995) and later correctly represent the final estimates. Due to potential problems, data from the following stations were not considered for use in the global solution for the day indicated. (For geographical reasons, they may not have been used in any case.) WARNING: Data from AREQ, BOR1, LAMA, NYAL, SANT, TROM excluded on day 043. WARNING: Data from BOR1, LAMA, TROM excluded on day 044. WARNING: Data from JOZE, LAMA, NYAL, TROM excluded on days 045 and 047. WARNING: Data from NALL, TROM excluded on day 046. WARNING: Data from GRAZ, JOZE, LAMA, MATE excluded on day 048. In the following table, UT1R-UTC are the integrated values based on estimated LODR values in the adjacent column. See IGS Report No. 1498 (jpl07827.sum) for details: JPL ERP TABLE GPS week 788 (1995 Feb 12 - Feb 18) MJD XPole Ypole UT1R-UTC LODR Xsig Ysig UTsig LODsig Nr Nf Nt Xrt Yrt 10**-5" usec us/d 10**-5" us us/d 10**-5"/d 49760.50 -9601 50615 288372 2509 4 6 13 13 32 10 25 191 169 49761.50 -9514 50756 285889 2457 5 5 13 13 32 11 25 182 171 49762.50 -9400 50906 283440 2442 5 5 12 12 32 10 25 185 144 49763.50 -9241 51004 280991 2456 5 6 13 13 32 11 24 211 157 49764.50 -9053 51173 278520 2486 5 5 13 13 32 11 24 231 168 49765.50 -8837 51316 276028 2497 5 6 13 13 32 12 25 270 148 49766.50 -8620 51474 273517 2526 4 5 12 12 32 12 25 228 175 END ERP TABLE The following table indicates the "3-dimensional orbit repeatability", as defined in IGS Mail Message 37, for GPS week 788: ["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)] JPL ORBIT REPEATABILITY TABLE GPS week 788 (1995 Feb 12 - Feb 18) 95 2 12 95 2 13 95 2 14 95 2 15 95 2 16 95 2 17 95 2 18 prn 3d rss (m) 1 0.20 0.10 0.20 0.20 0.10 0.22 0.26 2 0.22 0.12 0.19 0.14 0.10 0.12 0.15 4 0.35 0.33 0.11 0.22 0.24 0.19 0.42 5 0.32 0.15 0.10 0.27 0.30 0.27 0.31 6 0.25 0.32 0.3 0.4 0.30 7 0.31 0.16 0.17 0.10 0.13 0.16 0.12 9 0.32 0.20 0.19 0.13 0.16 0.17 0.15 12 0.34 0.25 0.34 0.36 0.34 0.32 0.35 14 0.32 0.21 0.18 0.17 0.11 0.16 0.14 15 0.20 0.23 0.23 0.16 0.28 0.33 0.28 16 1.09 1.25 0.15 0.28 0.31 0.23 0.14 17 0.10 0.27 0.20 0.12 0.17 0.12 0.15 18 0.28 0.12 0.14 0.18 0.14 0.20 0.21 19 0.24 0.22 0.23 0.14 0.17 0.20 0.23 20 0.17 0.12 0.12 0.21 0.13 0.17 0.13 21 0.16 0.14 0.14 0.15 0.14 0.23 0.28 22 0.10 0.11 0.12 0.15 0.17 0.10 0.18 23 0.44 0.28 0.35 0.40 0.30 0.20 0.22 24 0.53 0.23 0.11 0.21 0.21 0.20 0.23 25 0.24 0.09 0.24 0.28 0.21 0.15 0.24 26 0.25 0.34 0.14 0.11 0.11 0.17 0.18 27 0.17 0.20 0.18 0.17 0.11 0.16 0.12 28 0.28 0.29 0.10 0.17 0.16 0.21 0.11 29 0.28 0.34 0.12 0.17 0.09 0.14 0.23 31 0.23 0.29 0.20 0.12 0.19 0.22 0.28 _______________________ END ORBIT REPEATABILITY TABLE The following table statistically summarizes this week's "engineering data", as described in IGS Report No. 1528: JPL ENGINEERING DATA SUMMARY TABLE GPS week 788 (1995 Feb 12 - Feb 18) receiver/transmitter (dot means point positioned, * means fiducial site) | days analyzed | | rms clock noise (ns) | | | average clock solution (us) | | | | rms pseudorange (cm) | | | | | (dot means pcode not analyzed) | | | | | rms phase (mm) | | | | | | average arc (hr) | | | | | | | |___ |__ |_______ |_______ |___ |___ |__ ALBH 5.3 .205e+06 -53.5 40.5 4.68 2.66 ALBH. 1.0 7.03 .513 44.0 6.00 5.14 ALGO* 6.9 . . 40.7 4.16 3.68 AOA1. 6.9 163. -.202 82.7 9.54 1.30 AREQ 4.0 47.8 -.210 37.9 6.05 2.56 AREQ. .9 206. -.939e-01 64.0 6.00 .155 BLYT. 3.2 .289e+06 471. 62.8 8.87 .727 BOGT 2.9 153. -.112 50.1 7.00 1.25 BOR1. 5.7 55.7 -1.39 48.0 7.01 3.11 BRAN. 3.8 271. -.213 103. 9.64 4.69 BRIB. 5.4 .289e+06 514. 62.7 10.0 6.02 BRMU 6.9 .750e+07 -.155e+05 42.6 4.87 3.12 BRUS. 6.9 50.6 1.40 70.3 7.77 3.60 CARR. 6.9 102. -.170 70.4 9.12 2.19 CAS1 5.9 52.0 865. 37.9 5.69 1.59 CAS1. 1.0 15.0 834. 62.0 10.0 .982 CASA. 4.4 .341e+07 -.157e+05 . 9.86 1.65 CHIL. 2.5 .289e+06 440. 98.7 12.1 1.46 CIT1. 6.9 108. -.173 70.2 8.93 2.27 CMBB. 5.8 .290e+06 511. 77.0 11.5 1.66 CRFP. 1.6 .287e+06 553. 66.8 10.2 .330 DAV1 6.9 52.9 163. . 5.46 1.09 DRAO. 6.9 50.5 4.37 49.4 7.98 5.76 EISL 6.7 .488e+07 -.129e+05 40.3 7.18 2.29 FAIR* 6.9 394. 2.84 . 5.77 1.37 FARB. 2.6 .290e+06 449. 54.2 8.92 1.57 FORT 5.7 54.8 -491. 52.2 7.93 2.98 GODE. 6.9 50.8 -.505 60.9 8.95 2.61 GOLD* 6.2 53.1 -.876 . 4.90 2.41 GRAZ. 6.7 49.4 -3.85 . 8.19 1.37 GUAM 6.9 122. -.171 70.5 5.95 1.80 HART* 6.8 52.7 4.85 . 5.32 2.21 HARV. 6.3 .106e+06 317. 91.4 9.32 1.43 HERS. 5.4 128. 133. . 11.9 .910 HOB2. 6.7 87.3 -.664 59.4 11.1 3.02 HOLC. 2.4 .291e+06 431. 101. 12.3 1.58 IISC .8 .288e+06 485. 91.0 6.00 5.13 JOZE. 4.9 21.2 464. 49.6 7.84 4.77 JPLM. 6.9 59.4 609. 46.5 8.40 2.97 KERG 6.8 172. -113. . 5.15 2.40 KIRU. 6.9 50.0 -.984 68.7 10.7 1.29 KIT3 3.8 .220e+04 -.167e-01 88.2 4.28 3.16 KOKB* 6.2 .834e+05 -18.1 . 5.89 2.49 KOSG* 5.7 57.4 1.18 . 3.85 3.25 KOUR 6.9 50.5 11.0 . 8.73 1.22 KRAK. 2.8 192. -.174 84.0 9.36 1.18 LAMA. 4.6 86.3 -.203 . 7.80 2.79 LBCH. 6.8 373. -.152 94.8 9.14 1.04 LONG. 1.6 .289e+06 483. 169. 12.2 .857 MADR* 6.8 51.8 .925e-01 . 4.88 3.12 MAS1 6.1 54.4 -7.22 54.6 4.21 3.32 MATE 6.0 55.4 .640 . 4.39 2.11 MATE. .1 .227e-01 .836 . 4.00 .190 MATH. 4.1 .284e+06 495. 48.5 9.13 1.66 MCM4 6.9 96.1 -.160 . 5.77 1.65 MDO1 1.9 .859 -.490 35.0 4.00 3.19 MDO1. 4.9 60.0 -.438 60.4 9.52 2.27 METS 1.0 .569e-01 -.459 . 4.00 2.45 METS. 4.3 58.9 -.494 . 8.36 .968 MONP. 2.5 .289e+06 478. 95.3 9.55 .363 NLIB. 6.9 50.7 -1.62 56.3 7.96 2.79 NYAL 1.0 12.0 .166e-01 . 6.00 1.09 NYAL. 4.1 45.8 -.205e-01 . 8.61 1.16 OAT2. 6.8 225. -.179 54.9 7.37 .469 ONSA 6.9 49.8 9.61 39.3 4.00 2.60 PAMA 6.7 59.9 60.4 . 12.2 .280 PERT 6.9 51.5 82.3 52.0 5.16 3.21 PIE1. 6.9 50.9 -4.67 62.0 8.55 1.92 PIN1. 3.0 .290e+06 468. 61.6 9.87 .623 POTS. 6.7 89.9 -.170 83.8 7.76 1.74 PVEP. 6.5 .284e+06 507. 124. 13.8 3.70 QUIN. 6.8 51.4 -1.86 71.1 9.22 1.91 RCM5 6.9 51.1 -.941 . 5.22 2.54 SANT* 5.9 5.73 .194 . 6.00 2.14 SANT. 1.0 130. .367 . 14.0 2.34 SHAO 6.9 .888e+04 -21.4 44.1 4.35 1.51 SIO3. 3.8 .288e+06 493. 69.7 9.19 .873 STJO 6.6 .319e+06 214. 62.9 4.59 3.26 TAIW. 6.7 52.3 .135e+04 . 9.80 1.74 TIDB* 6.8 51.2 -.340 . 5.89 2.15 TMGO. 5.1 822. -.178 95.0 8.49 1.50 TRAK. 3.0 .290e+06 479. 92.0 10.8 .665 TROM* 2.0 4.43 998. . 5.51 2.08 TROM. 3.2 64.2 972. . 8.82 .702 TSKB 6.9 50.8 70.2 49.5 4.74 3.08 UCLP 1.0 84.5 -.115 44.0 4.00 4.53 UCLP. 5.2 99.4 -.183 62.8 8.69 2.09 UPAD. 1.2 .284e+06 520. 77.7 7.00 2.83 USC1. 6.8 123. -.174 72.4 8.72 2.20 USUD. 6.9 50.5 -.355e-01 51.7 8.37 2.41 VILL. 6.9 935. 4.44 67.3 8.03 5.42 VNDP. 2.5 .289e+06 453. 56.2 9.68 1.66 WEST. 6.9 50.7 .723 74.1 8.18 1.80 WLSN. 3.6 757. -.848e-01 88.6 9.84 .845 YAR1* 6.9 50.4 -.246 . 4.76 2.60 YELL* 6.9 298. -2.77 42.5 5.88 1.02 ZIMM. 3.1 .288e+06 510. 64.7 8.40 3.49 PRN01 6.9 97.4 -5.07 56.9 7.58 1.90 PRN02 6.9 94.1 -145. 63.2 7.29 1.57 PRN04 6.9 96.5 12.2 71.1 9.01 1.17 PRN05 6.9 96.6 89.9 63.9 7.90 1.31 PRN06 4.9 103. 88.6 59.3 7.38 1.88 PRN07 6.9 95.5 701. 57.3 8.40 1.43 PRN09 6.9 93.9 -21.8 70.6 7.61 1.29 PRN12 6.9 50.2 -341. 70.8 7.03 1.76 PRN14 6.5 95.8 7.99 62.3 8.49 1.67 PRN15 6.9 50.3 160. 77.4 7.74 1.42 PRN16 6.7 98.4 -80.4 78.5 11.1 1.42 PRN17 6.9 97.2 -73.7 65.0 7.14 1.83 PRN18 6.9 96.5 -7.32 65.3 8.23 1.59 PRN19 6.9 93.1 200. 66.4 8.62 1.69 PRN20 6.9 95.7 136. 69.2 7.47 1.91 PRN21 6.5 98.6 -13.9 63.7 8.12 1.67 PRN22 6.9 94.6 194. 73.4 7.93 1.52 PRN23 6.5 96.7 5.87 61.5 7.75 1.85 PRN24 6.9 95.9 458. 63.5 8.37 1.29 PRN25 6.9 95.5 -.228 62.3 7.32 1.79 PRN26 6.9 95.4 -61.6 78.8 8.10 1.28 PRN27 6.9 96.1 20.1 60.1 7.49 1.53 PRN28 6.9 49.9 66.6 72.9 7.93 1.53 PRN29 6.9 94.7 5.96 64.8 7.52 1.65 PRN31 6.9 93.6 72.5 72.8 7.74 1.62 _______________________ END ENGINEERING DATA SUMMARY TABLE As described in IGS Mail Message 37, the following table compares the JPL precise ephemerides with those from the broadcast ephemeris: JPL COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES 95 2 12 95 2 13 95 2 14 95 2 15 95 2 16 95 2 17 95 2 18 prn 3d rss (m) 1 3.8 4.4 4.7 5.1 5.2 5.2 4.8 2 10.9 5.3 9.6 9.5 9.7 10.5 7.2 4 7.8 7.3 6.3 5.6 6.7 7.2 6.3 5 5.1 6.6 5.5 4.7 5.7 7.4 6.6 6 6.2 6.2 5.7 20.9 11.4 7 6.9 6.4 5.3 5.5 6.0 5.7 6.0 9 8.3 7.4 6.2 5.9 6.5 8.0 8.3 12 4.5 3.9 2.2 3.1 4.1 4.2 3.0 14 7.4 9.1 11.2 9.0 6.4 8.8 6.8 15 5.7 6.6 6.8 6.4 4.6 4.8 5.6 16 7.6 10.9 11.9 12.8 10.7 11.7 12.0 17 4.1 6.0 7.5 7.0 6.2 7.4 7.5 18 5.8 7.6 9.2 5.9 6.7 8.8 6.2 19 8.6 7.8 15.0 5.6 6.7 4.9 5.6 20 7.6 6.7 5.8 6.3 6.2 7.4 5.4 21 8.6 8.5 11.0 10.8 8.5 8.6 10.1 22 14.2 6.8 7.5 8.4 7.2 6.3 5.8 23 6.1 12.6 15.2 11.6 7.6 12.4 9.6 24 5.9 7.5 8.2 7.7 6.4 5.7 5.5 25 7.8 6.0 5.5 8.1 7.5 5.8 4.5 26 2.6 3.2 2.5 2.1 3.6 3.8 3.2 27 8.3 6.3 10.0 10.0 8.4 8.1 7.8 28 3.9 3.9 3.4 3.4 3.4 3.8 3.8 29 4.0 4.7 3.3 2.3 3.2 5.9 4.7 31 3.2 3.9 3.2 3.9 3.9 3.3 3.0 _______________________ END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES