****************************************************************************** dorisreport 16-May-2007 03:55:26 Message No 0878 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Updated Report for week 1422 = 07098 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1422 from 08-04-2007 to 14-04-2007 DORIS name (using day of start): 07098 Days of year: from 2007/98 to 2007/104 ============================================================== 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/ign07098wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07098wd04.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., Y.E. Bar-Sever, G. Tavernier (2005), DORIS as a potential part of a Global Geodetic Observing System, J. Geodyn., 40(4-5), 494-501, DOI: 10.1016/j.jog.2005.06.011 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. Week 1405 = 06344 : Use GIPSY/OASIS software installed at Institut de Physique du Globe de Paris 4) Global Statistics ==================== GPS week number 1422 from 08-04-2007 to 14-04-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.75 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 08-04-2007 24434 50 24384 0.2 09-04-2007 24107 8 24099 0.0 10-04-2007 24349 8 24341 0.0 11-04-2007 24869 5 24864 0.0 12-04-2007 24982 4 24978 0.0 13-04-2007 24460 9 24451 0.0 14-04-2007 25068 4 25064 0.0 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 6873 6773 6864 6995 7009 6854 7073 SPOT2 4486 4347 4541 4671 4557 4441 4628 SPOT4 5250 5269 5204 5334 5387 5368 5443 SPOT5 7775 7710 7732 7864 8025 7788 7920 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.391 0.395 0.396 0.402 0.395 0.400 0.404 SPOT2 0.424 0.423 0.426 0.411 0.420 0.429 0.407 SPOT4 0.403 0.407 0.430 0.441 0.410 0.407 0.405 SPOT5 0.354 0.362 0.359 0.369 0.369 0.364 0.360 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 1451 1406 1470 1447 1390 1477 1460 AMTB 570 527 515 582 552 554 596 ARFB 376 353 398 424 423 430 406 ASDB 334 349 342 392 308 348 348 BEMB 1716 1680 1714 1692 1669 1567 1752 BETB 414 419 468 424 425 425 440 CADB 0 0 0 483 510 518 520 CHAB 748 689 745 736 750 685 744 CICB 485 465 518 490 462 510 487 CRPB 354 422 444 446 321 399 367 DIOB 427 451 503 477 480 438 481 DJIB 419 460 455 449 522 490 445 EASB 401 525 463 436 465 394 471 EVEB 278 285 285 268 239 241 296 FAIB o 997 1090 1045 1027 1035 1083 1035 FUTB 380 370 446 411 493 383 356 GAVB 272 211 213 258 248 253 245 GREB 581 539 524 500 552 522 487 HBMB 455 479 482 505 488 500 444 HEMB 0 0 0 296 335 352 355 KIUB 622 617 612 569 562 578 561 KOLB 603 487 570 592 553 630 643 KRUB 515 420 413 477 326 434 496 LICB 366 346 437 444 457 392 375 MAHB 332 358 413 247 374 405 371 MALB 469 495 467 441 432 409 452 MANB o 497 466 443 456 459 452 476 MATB 586 476 500 542 574 526 536 METB 685 689 707 693 751 726 734 MIAB 517 457 442 481 427 485 483 MONB 551 549 560 590 593 538 464 MORB 447 464 547 414 505 507 406 MSPB 557 561 628 488 539 623 609 NOWB 366 357 265 338 308 257 349 REUB 392 386 393 402 379 387 379 REZB 724 744 729 678 686 726 755 RIKB 445 505 469 367 410 356 482 RIPB 616 584 689 635 703 605 581 ROTB 1104 1109 1065 1097 1034 1011 977 SALB 570 513 522 548 519 484 466 SANB 578 506 501 496 508 566 561 SCRB 379 461 440 438 390 427 410 SODB o 438 409 466 445 414 419 407 SPJB 1520 1510 1500 1489 1534 1509 1450 STJB 636 680 717 676 767 658 662 SYPB 1399 1356 1390 1403 1335 1321 1386 THUB 1308 1366 1268 1418 1413 1274 1336 TLHA 573 592 549 534 580 629 563 TRIB o 554 559 539 595 494 464 615 YASB 638 589 514 577 506 505 657 YELB 851 885 901 931 885 878 845 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 3841 1568 1714 3243 AMTB 1320 659 859 1201 ARFB 1004 409 572 935 ASDB 858 390 505 854 BEMB 4649 1709 1871 3929 BETB 1055 596 715 830 CADB 634 427 475 556 CHAB 1629 1072 1196 1338 CICB 1159 706 749 930 CRPB 1171 213 393 1124 DIOB 916 797 746 879 DJIB 1078 645 786 890 EASB 1014 702 813 992 EVEB 516 338 410 704 FAIB 2838 953 1243 2581 FUTB 1054 493 531 918 GAVB 951 0 0 840 GREB 1397 549 644 1224 HBMB 1121 691 717 948 HEMB 510 248 242 432 KIUB 1330 958 1015 1175 KOLB 1318 833 1101 1003 KRUB 1127 592 673 933 LICB 1027 545 600 874 MAHB 972 394 480 839 MALB 1025 641 711 944 MANB 1203 587 648 960 MATB 1337 529 780 1265 METB 1862 673 853 1786 MIAB 1200 559 656 1023 MONB 1271 775 802 1093 MORB 1065 658 769 921 MSPB 1325 717 882 1198 NOWB 948 240 303 885 REUB 901 451 610 886 REZB 2210 533 655 1814 RIKB 1033 535 642 1010 RIPB 1876 515 603 1560 ROTB 3153 743 821 2909 SALB 1224 674 872 1007 SANB 1248 727 772 1097 SCRB 1029 553 674 892 SODB 1141 566 655 932 SPJB 3807 1527 1845 3580 STJB 1628 870 1018 1415 SYPB 3609 1374 1670 3203 THUB 3227 1584 1810 3031 TLHA 1672 422 793 1281 TRIB 1246 753 902 1144 YASB 1261 779 955 1124 YELB 2574 781 892 2135 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 16.4 19.0 14.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -18.1 +- 2.1 mm TY = 11.0 +- 2.1 mm TZ = 46.4 +- 2.0 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 1.41 0.76 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr