****************************************************************************** dorisreport 08-Jun-2006 16:30:34 Message No 0604 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1373 = 06120 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1373 from 30-04-2006 to 06-05-2006 DORIS name (using day of start): 06120 Days of year: from 2006/120 to 2006/126 ============================================================== 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/ign06120wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06120wd04.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 1373 from 30-04-2006 to 06-05-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.74 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 30-04-2006 23018 13 23005 0.1 01-05-2006 22895 8 22887 0.0 02-05-2006 23457 9 23448 0.0 03-05-2006 23491 32 23459 0.1 04-05-2006 23208 56 23152 0.2 05-05-2006 21270 14 21256 0.1 06-05-2006 22569 44 22525 0.2 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 6058 6347 6591 6464 6179 5477 6381 SPOT2 4789 4857 4832 4806 4716 4463 4542 SPOT4 4918 4849 4811 4961 4913 4581 4743 SPOT5 7240 6834 7214 7228 7344 6735 6859 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.406 0.407 0.400 0.404 0.413 0.416 0.433 SPOT2 0.419 0.408 0.423 0.434 0.419 0.406 0.421 SPOT4 0.401 0.427 0.430 0.428 0.421 0.407 0.409 SPOT5 0.350 0.364 0.369 0.360 0.364 0.359 0.383 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 1394 1406 1445 1425 1349 1431 1407 AMTB 510 441 493 476 474 522 447 ASDB 351 379 295 413 339 336 306 BEMB 1541 1619 1613 1559 1643 1566 1646 CADB 497 504 485 452 568 539 427 CHAB 687 697 730 697 659 657 680 CROB 378 317 336 322 436 283 349 EASB 494 459 490 462 490 397 510 EVEB 258 254 302 250 235 269 292 FAIB o 984 1102 1029 1059 1060 980 1080 FUTB 363 435 365 461 463 353 386 GAVB 166 123 108 158 254 268 322 GREB 530 541 527 415 528 556 514 HEMB 364 403 325 428 357 324 402 JIUB 514 501 484 509 510 404 468 KESB 566 543 533 572 535 488 619 KIUB 601 594 595 601 553 574 571 KOLB 534 566 520 534 618 501 499 KRUB 485 414 457 457 394 508 421 LICB 237 379 336 339 393 265 379 MAHB 381 193 406 375 416 151 345 MALB 464 356 377 487 287 382 447 MANB o 426 373 499 405 409 497 480 METB 768 743 788 797 782 669 689 MIAB 479 434 474 444 429 470 471 MONB 545 538 529 560 594 473 479 MORB 451 548 451 422 576 413 457 MSPB 503 558 489 492 519 578 559 PAQB 459 299 468 518 477 376 512 PDMB 579 434 486 515 461 455 522 REUB 338 409 391 376 419 353 352 REZB 657 714 700 711 650 663 818 RIPB 602 594 684 618 672 631 540 ROTB 1143 1079 966 1011 1105 1145 1192 SALB 85 68 60 101 174 214 298 SANB 580 556 553 490 624 598 587 SCRB 410 432 441 479 465 339 497 SODB o 208 476 427 439 498 412 404 SPJB 1490 1517 1535 1434 1533 1371 1441 STJB 627 584 656 610 615 602 580 SYPB 1346 1236 1377 1326 1335 1313 1256 THUB 1327 1333 1255 1474 807 0 0 TLHA 487 646 629 611 607 541 612 TRIB o 473 555 577 514 492 426 620 YASB 614 553 599 603 493 526 623 YELB 738 734 791 828 852 706 740 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- MATB 343 429 495 529 400 272 367 this is due to the lack of data or to some stations related problems as described below MATB 8 11 2005 1 1 2010 antenna fall 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3630 1640 1723 3156 AMTB 1208 701 571 1111 ASDB 851 434 536 780 BEMB 4290 1817 1856 3609 CADB 1129 827 776 942 CHAB 1528 1089 1152 1289 CROB 889 440 462 740 EASB 1030 806 854 975 EVEB 495 360 416 664 FAIB 2764 1088 1198 2542 FUTB 976 605 530 924 GAVB 380 0 0 1096 GREB 1342 669 606 1187 HEMB 992 470 420 922 JIUB 1255 760 690 945 KESB 1426 743 745 1138 KIUB 1443 985 970 1104 KOLB 1188 910 984 944 KRUB 1131 643 738 805 LICB 888 554 387 669 MAHB 837 365 480 748 MALB 1013 658 615 754 MANB 1147 537 732 936 METB 2007 817 813 1835 MIAB 1142 542 672 1020 MONB 1224 790 790 1099 MORB 1126 736 737 904 MSPB 1282 751 773 1068 PAQB 940 724 822 848 PDMB 1221 702 724 998 REUB 895 530 533 857 REZB 2079 573 712 1736 RIPB 1973 553 532 1462 ROTB 3224 836 906 2940 SALB 417 643 0 0 SANB 1308 909 972 1036 SCRB 1159 643 749 722 SODB 1014 574 567 873 SPJB 3694 1666 1805 3474 STJB 1461 919 804 1305 SYPB 3341 1476 1536 3112 THUB 2249 1107 1118 1926 TLHA 1497 740 833 1230 TRIB 1172 794 828 1092 YASB 1380 799 1008 1070 YELB 1812 842 861 2042 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- MATB 1045 436 535 964 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 16.9 21.5 15.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -21.4 +- 1.8 mm TY = 15.8 +- 1.8 mm TZ = 54.0 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.1 +- 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 1.00 0.58 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr