****************************************************************************** dorisreport 07-Jul-2006 06:18:36 Message No 0629 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1377 = 06148 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1377 from 28-05-2006 to 03-06-2006 DORIS name (using day of start): 06148 Days of year: from 2006/148 to 2006/154 ============================================================== 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/ign06148wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06148wd04.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 1377 from 28-05-2006 to 03-06-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.81 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 28-05-2006 22379 16 22363 0.1 29-05-2006 21505 16 21489 0.1 30-05-2006 21552 10 21542 0.0 31-05-2006 22851 49 22802 0.2 01-06-2006 22446 23 22423 0.1 02-06-2006 22543 12 22531 0.1 03-06-2006 22740 47 22693 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 6380 5195 4982 6333 6168 6333 6429 SPOT2 4458 4571 4498 4478 4561 4545 4541 SPOT4 4564 4700 4785 4893 4727 4690 4712 SPOT5 6961 7023 7277 7098 6967 6963 7011 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.404 0.413 0.419 0.432 0.413 0.407 0.423 SPOT2 0.406 0.415 0.412 0.406 0.461 0.432 0.438 SPOT4 0.436 0.431 0.411 0.403 0.420 0.420 0.484 SPOT5 0.367 0.371 0.375 0.381 0.370 0.357 0.354 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 1356 1264 1360 1462 1410 1406 1460 AMTB 513 470 422 499 452 459 465 ASDB 0 94 377 359 316 361 364 BEMB 1655 1539 1458 1629 1636 1688 1610 CADB 428 507 505 487 460 511 555 CHAB 707 629 669 720 715 697 724 CROB 346 311 395 373 367 358 333 EASB 463 544 468 396 493 481 523 EVEB 294 239 198 271 233 230 280 FAIB o 984 947 949 985 1021 965 1021 FUTB 398 382 435 348 435 443 442 GAVB 297 295 345 349 290 275 322 GREB 548 426 444 562 524 504 460 HEMB 392 332 333 394 406 362 357 JIUB 459 496 452 470 507 541 435 KESB 468 535 368 545 619 560 527 KIUB 591 579 540 550 587 616 539 KOLB 536 457 601 576 493 588 587 KRUB 493 451 343 532 405 464 495 LICB 432 371 443 316 458 344 428 MAHB 176 382 372 372 358 163 405 MALB 448 485 307 437 469 467 353 MANB o 482 455 420 443 473 476 449 MATB 497 429 404 404 366 481 497 METB 780 742 765 751 739 764 760 MIAB 437 423 355 488 473 375 432 MONB 547 600 502 561 539 543 535 MORB 406 426 493 450 424 529 403 MSPB 483 430 485 554 562 479 465 PAQB 531 491 579 523 466 570 475 PDMB 489 418 446 445 503 434 459 REUB 356 389 353 403 339 405 431 REZB 612 541 630 722 773 596 547 RIPB 669 604 598 615 523 684 621 ROTB 1033 1071 978 1129 1161 1046 1091 SALB 550 433 403 489 477 455 484 SANB 580 506 520 605 539 572 606 SCRB 412 511 457 459 521 466 481 SODB o 430 441 454 377 295 448 470 SPJB 1528 1374 1455 1507 1501 1474 1485 STJB 683 564 507 646 641 612 640 SYPB 1350 1238 1199 1430 1297 1342 1394 TLHA 530 456 567 531 615 544 490 TRIB o 613 402 426 541 518 465 503 YASB 610 542 448 621 600 454 576 YELB 795 780 705 783 723 833 818 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- CICB 18 36 0 0 0 42 57 this is due to the lack of data or to some stations related problems as described below CICB 21 5 2006 1 1 2010 equipment problem, received on SPOT2 only 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3614 1712 1654 3046 AMTB 1148 615 588 1148 ASDB 608 363 380 669 BEMB 4203 1759 1891 3748 CADB 1097 799 766 998 CHAB 1548 1079 1136 1371 CROB 908 445 497 751 EASB 1010 899 954 855 EVEB 457 392 350 604 FAIB 2533 1024 1155 2431 FUTB 952 555 618 975 GAVB 1324 0 0 999 GREB 1294 708 559 1136 HEMB 972 496 479 848 JIUB 1207 658 743 1046 KESB 1288 736 726 1073 KIUB 1318 916 964 1184 KOLB 1250 901 941 998 KRUB 1117 638 725 861 LICB 912 586 646 829 MAHB 845 356 495 716 MALB 1036 664 643 835 MANB 1140 575 695 995 MATB 1132 497 552 1043 METB 1972 820 897 1850 MIAB 1095 495 603 957 MONB 1248 765 859 1145 MORB 998 790 661 899 MSPB 1184 694 695 1043 PAQB 1147 855 854 1039 PDMB 1141 588 633 1009 REUB 945 478 510 937 REZB 1856 514 638 1574 RIPB 1762 610 603 1475 ROTB 3193 757 823 3023 SALB 1102 699 726 967 SANB 1246 859 870 1166 SCRB 1060 706 788 937 SODB 1125 568 571 861 SPJB 3739 1709 1737 3459 STJB 1452 863 820 1385 SYPB 3294 1571 1551 3146 TLHA 1510 402 711 1282 TRIB 1088 816 858 940 YASB 1203 906 966 1004 YELB 1740 843 912 2117 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- CICB 0 162 0 0 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 16.6 13.1 14.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -28.1 +- 1.9 mm TY = 13.8 +- 1.8 mm TZ = 43.9 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.4 +- 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 1.28 0.56 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr