Date: Fri, 6 Oct 2000 17:20:41 -0700 (PDT) From: David C Jefferson Message-Id: <200010070020.RAA13764@kalman.jpl.nasa.gov> To: eisop@obspm.fr, igsreport@igscb.jpl.nasa.gov Subject: [IGSREPORT-7629] Wk 1081 JPL Analysis Report Sender: owner-igsreport Precedence: bulk ****************************************************************************** IGS Electronic Report 06 Oct 17:20:42 PDT 2000 Message Number 7629 ****************************************************************************** Author: D C Jefferson ****************************************************************************** JPL ANALYSIS REPORT GPS-WEEK 1081 (DAYS 268-274, DATES 2000 Sep 24 - Sep 30) ****************************************************************************** Submitted by the JPL IGS/FLINN Analysis Team: D C Jefferson, Y E Bar-Sever, M B Heflin, F H Webb, J F Zumberge 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 (137.78.60.30), directory pub/jpligsac/1081. These files (except for *.tro) have also been sent to the CDDIS. ______________________________________________________________________________ filename contents ______________________________________________________________________________ jpl10817.sum This text file. jpl10817.erp Earth rotation parameters for GPS week 1081. jpl10817.snx Ground station coordinates for GPS week 1081, SINEX format. jpl1081[0-6].sp3 GPS ephemerides for GPS week 1081, sp3 format. jpl1081[0-6].tro Ground station troposphere estimates for GPS week 1081. jpl1081[0-6].clk GPS and ground station clocks for GPS week 1081, RINEX. ______________________________________________________________________________ Median Orbit Repeatability (see table below): 9.0 cm According to the file ftp://tycho.usno.navy.mil/pub/gps/gpsn3.txt, PRN23 was unusable on days 271 and 272. We have excluded data from this satellite on day 271 only. Due to potential problems, data from stations mentioned below 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: ALGO (not USNO) used as reference clock days 268 and 273. WARNING: NRC1 (not USNO) used as reference clock days 269 and 270. WARNING: Data from PRN15 and PRN28 excluded the entire GPS week 1081. WARNING: Data from PRN23 excluded day 271. WARNING: Data from PETP, WTZT, WUHN excluded day 268. WARNING: Data from BARB, MALI, NTUS, PETP, RAMO, WTZT, WUHN excluded day 269. WARNING: Data from FORT, LBCH, NTUS, PETP, VENE, WTZT excluded day 270. WARNING: Data from LBCH, PETP, QUIN, WTZT excluded day 271. WARNING: Data from HARV, KELY, LBCH, NICO, PETP, SOFI, WTZT excluded day 272. WARNING: Data from DRAG, KELY, REYK, VENE, WTZT excluded day 273. WARNING: Data from REYK, WTZT excluded day 274. 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 1081 (2000 Sep 24 - Sep 30) version 2 MJD XPole Ypole UT1R-UTC LODR Xsg Ysg UTsg LOsg Nr Nf Nt Xrt Yrt 10**-6" 10**-6" .1us .1us/d 10**-6" .1us .1us/d 10**-6"/d 51811.50 3564 243606 1601659 5641 34 37 144 144 42 0 25 -1213 -102 51812.50 2321 243609 1596043 5591 34 38 148 148 42 0 25 -1220 382 51813.50 1211 243826 1590134 6228 33 37 144 144 42 0 25 -1078 62 51814.50 97 244420 1583738 6563 35 41 147 147 42 0 24 -1171 229 51815.50 -1353 245195 1576860 7194 35 40 138 138 42 0 25 -1937 632 51816.50 -3238 246236 1569515 7495 34 40 145 145 42 0 25 -1736 587 51817.50 -5077 246769 1561768 7999 37 43 138 138 42 0 25 -1533 373 END ERP TABLE The following table indicates the "3-dimensional orbit repeatability", as defined in IGS Mail Message 37, for GPS week 1081: ["3d rss" = sqrt(xrms**2 + yrms**2 + zrms**2)] JPL ORBIT REPEATABILITY TABLE GPS week 1081 (2000 Sep 24 - Sep 30) 00 9 24 00 9 25 00 9 26 00 9 27 00 9 28 00 9 29 00 9 30 prn 3d rss (cm) 1 8 9 13 12 8 13 15 2 6 6 9 10 5 13 10 3 6 9 7 8 6 17 14 4 7 6 8 6 9 12 10 5 6 4 6 6 9 9 8 6 12 8 13 21 17 16 8 7 21 16 5 10 9 13 11 8 8 5 9 11 6 6 10 9 9 4 5 5 8 14 12 10 9 6 6 14 12 7 8 11 11 13 16 11 8 17 10 13 8 10 8 8 8 8 12 17 9 8 10 11 7 13 9 19 5 8 10 8 11 9 10 20 11 21 11 12 15 11 10 21 9 10 12 11 7 9 10 22 8 5 4 8 6 8 9 23 20 13 20 19 10 9 24 6 5 8 6 6 10 12 25 8 6 6 8 7 11 8 26 6 4 8 8 6 18 12 27 6 6 12 9 6 10 11 29 16 17 20 22 38 14 22 30 7 6 9 5 13 12 7 31 5 13 11 8 12 10 14 _______________________ 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 1081 (2000 Sep 24 - Sep 30) 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) | | | | | | | |___ |__ |_______ |_______ |___ |___ |__ ALGO* 7.0 3.27 1.52 32.8 3.74 3.37 AOML 3.0 17.4 -.627e-03 62.1 5.77 2.76 AREQ* 3.0 40.4 98.2 27.7 4.00 2.83 ARTU 4.9 18.8 -.877e-01 35.8 4.00 2.64 ASC1 5.5 297. -.138e-03 73.9 5.84 2.33 AUCK* 7.0 19.5 -.248e-02 60.4 4.61 2.80 BAHR* 1.9 .554 785. 35.0 5.00 3.71 BARB 2.0 30.3 -.106 25.0 7.00 3.27 CAS1* 3.9 11.0 -.495e-02 27.5 3.82 .890 CIC1 6.0 42.9 -.659e-02 61.0 4.00 2.97 COCO 6.0 15.9 -.452e-02 28.2 5.52 4.03 DAV1* 6.9 15.5 -.671e-02 86.3 3.48 .997 DGAR 6.9 .117e+06 1.59 33.9 5.95 3.00 DRAG .9 19.7 -.118 76.0 6.00 3.04 EISL 6.6 82.8 -.428e-01 79.2 4.61 2.33 ESTI .9 .290e+06 505. 95.0 7.00 1.55 FAIR* 6.7 2.85 -1.00 25.2 4.00 .828 FORT* 4.9 3.61 .229 93.0 6.22 1.63 GALA 6.0 34.9 -.125 25.0 4.36 2.81 GOUG 2.8 .290e+06 499. 60.0 5.34 2.72 GUAM* 5.8 36.4 -.157 44.8 7.85 3.16 HOB2* 1.0 .871e-01 -20.2 48.0 5.00 3.48 HRAO 5.0 .288e+06 495. 78.4 4.62 3.92 IISC 2.5 55.6 -.372e-01 88.3 5.68 1.70 IRKT* 6.9 2.83 -.770e-01 68.0 4.15 2.47 JAB1 6.9 34.2 -.136 58.7 6.02 2.76 JPLM 1.0 19.4 132. 69.0 4.00 3.26 KERG* 5.9 .289e+06 499. 51.0 5.68 2.22 KIT3* 5.9 27.1 -.117e-01 44.2 5.18 3.78 KODK 1.0 14.3 -.864e-01 39.0 5.00 2.33 KOKB* 6.9 3.18 -2.30 43.8 5.05 1.11 KOUR* 3.8 36.4 -.130 48.8 6.00 3.06 KUNM 2.0 95.5 -.714e-01 89.9 5.00 2.58 KWJ1* 5.7 139. -.264e-01 44.9 5.67 1.05 LHAS* 4.0 14.3 .872e-03 33.8 4.77 3.67 MAC1* 6.6 17.4 -.110 33.2 4.00 1.66 MAG0 6.9 17.7 -.895e-01 43.7 4.31 2.63 MALI* 4.7 .414e+05 -116. . 7.00 1.77 MAS1* 6.0 3.65 .365 29.5 4.37 3.45 MAW1 1.9 19.8 -.874e-02 34.5 4.00 1.19 NKLG 5.9 .284e+06 489. 73.5 7.00 1.79 NRC1 2.1 . . 51.0 3.54 3.57 NTUS .5 .495e+05 -22.5 60.0 7.00 .635 NYAL* 6.9 2.74 -.146 55.4 3.90 1.16 ONSA* 6.6 10.7 -.499e-01 45.7 4.16 2.42 RAMO 3.8 28.2 -.104 67.1 6.06 2.82 REYK 3.0 10.9 -.995e-02 59.3 6.35 1.71 RIOG 7.0 48.3 -.983e-01 34.0 4.46 2.82 SANT* 6.3 211. -.582e-01 30.5 4.00 .976 SELE 1.0 50.9 -.214e-01 76.0 3.00 2.93 SFER 1.0 .452 837. 59.0 5.00 2.37 STJO 3.0 4.69 .498 31.7 4.36 3.44 SUTH 2.0 40.8 -.111e-02 81.5 4.00 2.65 SYOG 1.0 .289e+06 464. 75.0 6.00 1.46 THTI 5.9 .289e+06 497. 74.6 6.19 2.09 TIDB* 7.0 2.72 522. 31.0 5.59 3.67 TRAB 1.0 17.3 .294e-01 45.0 5.00 3.23 TSKB* 5.8 3.29 -.562 64.6 4.91 2.86 USNO 3.0 . . 45.7 5.00 3.46 USUD 3.0 4.17 -2.90 48.4 3.36 1.23 VESL 1.8 .289e+06 507. 58.5 6.00 1.61 WTZR* 7.0 51.3 .380 54.3 4.31 2.71 WUHN 1.9 43.7 -.153 70.0 6.00 3.57 YAR1* 6.4 456. .409e-01 54.4 3.78 2.01 YELL* 6.7 2.78 .414 43.4 4.00 1.23 PRN01 7.0 3.84 146. 51.2 5.00 2.01 PRN02 6.9 3.47 -275. 50.9 5.00 2.16 PRN03 7.0 2.50 43.6 50.9 5.00 2.02 PRN04 6.8 1.57 452. 53.9 5.00 2.00 PRN05 7.0 3.46 267. 51.1 5.00 2.20 PRN06 7.0 5.81 -.138e-01 53.0 5.00 2.26 PRN07 7.0 1.85 132. 54.3 5.00 2.15 PRN08 6.9 3.44 536. 50.2 5.00 2.01 PRN09 7.0 2.19 -9.80 52.2 5.31 2.12 PRN10 7.0 2.14 57.2 52.7 5.00 2.19 PRN11 7.0 .382 615. 50.6 5.00 1.89 PRN13 7.0 .851 -830. 58.6 5.00 2.06 PRN17 6.6 4.72 -275. 56.9 5.16 2.09 PRN19 6.9 3.68 303. 50.7 5.00 1.93 PRN20 6.8 .472 -53.8 55.5 5.00 2.01 PRN21 7.0 3.07 16.5 51.0 5.00 2.16 PRN22 7.0 1.49 313. 53.9 5.00 2.18 PRN23 6.0 4.78 8.04 53.6 5.56 2.29 PRN24 6.8 2.69 4.07 51.9 5.00 2.12 PRN25 7.0 2.06 8.53 51.1 5.00 2.00 PRN26 7.0 .723 559. 50.5 5.00 2.07 PRN27 7.0 4.25 32.0 50.4 4.88 1.94 PRN29 7.0 .812 103. 51.3 5.00 2.02 PRN30 7.0 1.73 -39.4 52.3 5.00 2.13 PRN31 7.0 3.35 12.6 55.2 5.00 1.93 _______________________ 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 00 9 24 00 9 25 00 9 26 00 9 27 00 9 28 00 9 29 00 9 30 prn 3d rss (cm) 1 640 379 234 400 776 705 382 2 778 757 229 339 549 502 588 3 267 426 328 231 460 380 184 4 703 872 601 313 200 262 378 5 661 562 503 586 469 511 420 6 600 697 519 521 522 414 479 7 581 227 295 305 342 206 249 8 382 469 504 226 211 283 375 9 433 633 330 270 328 417 259 10 367 415 368 426 375 289 319 11 449 889 684 246 362 500 378 13 317 558 343 287 259 376 379 17 473 313 514 246 210 460 324 19 192 215 305 500 549 466 311 20 584 604 381 229 316 415 542 21 244 163 281 352 262 304 359 22 401 329 265 615 304 263 453 23 667 717 592 3203 2061 1454 24 737 718 673 619 441 551 316 25 414 392 378 326 276 395 350 26 853 843 320 201 336 336 370 27 470 565 431 387 300 366 407 29 447 303 268 207 320 248 217 30 365 417 289 233 292 189 184 31 293 451 365 506 266 253 370 _______________________ END COMPARISON OF BROADCAST NAVIGATION MESSAGE WITH PRECISE EPHEMERIDES global: algo aoml areq artu asc1 auck bahr barb cas1 cic1 coco dav1 dgar drag eisl esti fair fort gala goug guam hob2 hrao iisc irkt jab1 jplm kerg kit3 kodk kokb kour kunm kwj1 lhas mac1 mag0 mali mas1 maw1 nklg nrc1 ntus nyal onsa ramo reyk riog sant sele sfer stjo suth syog thti tidb trab tskb usno usud vesl wtzr wuhn yar1 yell