****************************************************************************** dorisreport 05-Apr-2006 08:04:12 Message No 0549 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1364 = 06057 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1364 from 26-02-2006 to 04-03-2006 DORIS name (using day of start): 06057 Days of year: from 2006/57 to 2006/63 ============================================================== Author: Pascal Willis 1) Contacts =========== Email pascal.willis@ign.fr Phone 1-818-393-4748 FAX 1-818-393-4965 2) Products =========== All the following products are available at the CDDIS data center ftp cddis.gsfc.nasa.gov weekly sinex in free-network pub/doris/products/sinex_series/ignwd/ign06057wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06057wd04.snx.Z geocenter series pub/doris/products/geoc/ign03wd01.geoc.Z Earth Orientation Parameters time series pub/doris/products/eop/ign03wd01.eop.Z 3) Analysis Strategy ==================== The DORIS data have been processed using the Gipsy/Oasis software at the Jet Propulsion Laboratory Suggestions on which solutions should be used or not can be found in pub/doris/products/sinex_series/ign.snx.readme Complete description files can be found at CDDIS at weekly sinex in free-network pub/doris/products/sinex_series/ignwd/ignwd05.snx.dsc weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ignwd04.snx.dsc geocenter series pub/doris/products/geoc/ign03wd01.geoc.dsc Earth Orientation Parameters time series pub/doris/products/eop/ign03wd01.eop.dsc For references, the following papers are recommended : Willis, P., M. Heflin (2004), External validation of the GRACE GGM01C gravity field using GPS and DORIS positioning results, Geophys. Res. Lett., 31(13), L13616, DOI:10.1029/2004GL020038. Willis, P., C. Boucher, H. Fagard, Z. Altamimi (2005), Applications geodesiques du systeme DORIS a l'Institut Geographique National, Geodetic applications of the DORIS system at the French Institut Geographique National, C.R. Geoscience, 337(7), 653-662, DOI:10.1016/j.crte.2005.03.002. Last changes in the time series data analysis: Week 678 = 93003 : See DORISMail #0288, start of the time series Week 1281 = 04207 : Estimate DORIS wet tropospheric delay per measurement using a randomwalk approch (Psigma = 5 cm per day) no horizontal gradients used yet. See DORISMail #0345 Week 1287 = 04249 : Start using cumulative solution ign04d02 to perform the ITRF2000 transformation (when needed) Week 1293 = 04291 : Start using actual mass information for all satellites (as provided in the new *mass.txt files) instead of nominal values as before Week 1341 = 05261 : Do not estimate the constant term of the relativity correction (this is already done by CNES by modifying the on-board oscillator, exactly like for GPS). Use a cutoff angle of 15 degrees (before that, no cutoff angle was used but now CNES is delivering data at very low elevation. Do not estimate tropospheric correction as random walk anymore. Use 1 parameter per hour (maximum) + 2.5 cm@ 1d as constraint. 4) Global Statistics ==================== GPS week number 1364 from 26-02-2006 to 04-03-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.96 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 26-02-2006 23028 22 23006 0.1 27-02-2006 22892 33 22859 0.1 28-02-2006 20013 5 20008 0.0 01-03-2006 23070 6 23064 0.0 02-03-2006 23318 63 23255 0.3 03-03-2006 23294 29 23265 0.1 04-03-2006 22969 21 22948 0.1 5) Individual Statistics per satellite ====================================== The following table includes all data that have been kept in the solution (after pre and post-processing) 5.1) Number of observations per satellite ----------------------------------------- day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- ENVISAT 6379 6506 6381 6397 6616 6446 6344 SPOT2 4467 4635 4526 4595 4519 4541 4715 SPOT4 4904 4763 2250 4812 4902 5019 4918 SPOT5 7256 6955 6851 7260 7218 7259 6971 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.393 0.410 0.396 0.399 0.392 0.402 0.398 SPOT2 0.427 0.417 0.397 0.400 0.411 0.434 0.421 SPOT4 0.425 0.412 0.405 0.407 0.411 0.418 0.407 SPOT5 0.354 0.363 0.353 0.354 0.356 0.352 0.355 6) Individual Statistics per station ====================================== 6.1) Stations given in sinex solutions -------------------------------------- The following table includes all DORIS data that were used to generate the weekly DORIS sinex solutions o = station after a break in the DORIS time series day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- ADEB 1455 1445 1392 1446 1466 1377 1441 AMTB 496 504 489 490 448 483 510 ASDB 257 236 296 250 291 319 252 BEMB 1650 1714 1526 1511 1611 1683 1558 CADB 425 388 444 427 525 540 487 CHAB 0 0 355 717 687 682 674 CROB 362 328 248 363 305 322 342 EASB 423 397 529 486 456 440 531 EVEB 235 234 300 209 198 268 263 FAIB o 1101 1060 1025 1054 1018 994 1013 FUTB 437 422 327 417 456 388 404 GREB 494 548 521 571 480 530 566 HBKB 477 368 277 485 553 455 404 HEMB 343 319 411 398 327 167 0 JIUB 571 549 426 568 553 496 536 KESB 510 523 573 541 477 532 569 KIUB 633 636 599 652 607 654 627 KOLB 534 603 534 514 606 551 544 KRUB 357 147 0 0 0 0 0 LICB 348 312 141 376 439 309 391 MALB 219 230 445 496 396 427 418 MANB o 465 481 391 466 451 500 461 MATB 444 403 427 479 451 377 378 METB 786 782 765 792 793 809 797 MIAB 455 459 421 440 421 513 450 MONB 584 464 553 569 553 557 531 MORB 454 497 420 458 466 490 481 MSPB 587 598 429 549 506 514 543 NOWB 380 374 333 334 351 447 348 PAQB 510 569 514 513 586 541 487 PDMB 494 452 466 464 446 454 547 REUB 373 400 345 311 403 321 323 REZB 656 720 629 718 640 701 727 RIPB 606 615 578 575 674 678 561 ROTB 1154 1192 1086 1097 1119 1125 1205 SALB 350 319 480 64 0 0 0 SANB 600 586 550 571 584 605 571 SCRB 490 508 444 412 473 469 525 SODB o 468 453 399 362 456 422 422 SPJB 1496 1438 1367 1546 1473 1493 1467 STJB 560 586 553 686 602 563 589 SYPB 1306 1410 1349 1362 1383 1372 1383 THUB 1347 1322 1268 1328 1248 1314 1358 TLHA 633 527 509 560 604 564 567 TRIB o 403 492 566 503 431 560 466 YASB 534 551 580 497 525 605 555 YELB 909 852 868 862 945 878 849 6.2) stations rejected from solution ------------------------------------ all available stations were processed and given in the output sinex solutions 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3835 1645 1655 3206 AMTB 1285 652 645 1071 ASDB 697 312 450 603 BEMB 4315 1783 1851 3712 CADB 1073 714 753 880 CHAB 1047 694 675 863 CROB 881 431 364 726 EASB 1132 794 836 897 EVEB 508 313 362 588 FAIB 2836 992 1205 2535 FUTB 1089 589 609 800 GREB 1381 623 714 1163 HBKB 1168 648 662 748 HEMB 756 361 335 661 JIUB 1363 844 747 1008 KESB 1363 687 704 1166 KIUB 1520 1057 1060 1124 KOLB 1280 743 1084 1012 KRUB 231 134 50 134 LICB 874 550 450 676 MALB 965 548 624 717 MANB 1186 643 674 938 MATB 1069 468 649 963 METB 2224 721 935 1850 MIAB 1185 568 581 994 MONB 1287 840 789 1075 MORB 1109 706 761 892 MSPB 1290 757 738 1147 NOWB 1008 400 338 967 PAQB 1223 866 941 966 PDMB 1193 644 651 1026 REUB 874 459 490 821 REZB 2050 692 546 1677 RIPB 1802 493 619 1556 ROTB 3487 889 748 3132 SALB 495 289 155 420 SANB 1326 934 906 1144 SCRB 1069 766 757 927 SODB 1172 556 601 874 SPJB 3827 1570 1778 3389 STJB 1521 756 821 1251 SYPB 3577 1586 1599 3109 THUB 3357 1654 1592 2846 TLHA 1627 527 756 1200 TRIB 1129 665 811 1023 YASB 1278 799 853 1144 YELB 2587 775 942 2093 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- 7) External Comparisons ======================= (for information) 7.1) Stations coordinates ------------------------- Looking at the transformation results Comparing with solution ign04d02 at epoch of observations Weekly DORIS residuals in mm N E V ------------------- WRMS 12.4 18.4 15.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -21.1 +- 1.9 mm TY = 16.6 +- 1.8 mm TZ = 25.6 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.5 +- 0.3 ppb 7.4) Earth Orientation Parameters --------------------------------- External comparison with JPL/GPS EOP values number of days compared X_POLE_RMS (mas) Y_POLE_RMS (mas) ------------------------------------------------------------------ 7 1.10 0.51 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr