****************************************************************************** dorisreport 24-May-2007 03:30:59 Message No 0885 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Updated Report for week 1423 = 07105 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1423 from 15-04-2007 to 21-04-2007 DORIS name (using day of start): 07105 Days of year: from 2007/105 to 2007/111 ============================================================== 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/ign07105wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07105wd04.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 1423 from 15-04-2007 to 21-04-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.73 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 15-04-2007 24395 6 24389 0.0 16-04-2007 24104 47 24057 0.2 17-04-2007 23865 11 23854 0.0 18-04-2007 24093 11 24082 0.0 19-04-2007 23837 4 23833 0.0 20-04-2007 24235 5 24230 0.0 21-04-2007 23693 15 23678 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 6947 6630 6502 6765 6642 6904 6282 SPOT2 4411 4393 4535 4279 4302 4505 4587 SPOT4 5303 5258 5100 5302 5221 5193 5151 SPOT5 7728 7776 7717 7736 7668 7628 7658 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.418 0.424 0.397 0.406 0.402 0.390 0.390 SPOT2 0.417 0.406 0.437 0.425 0.417 0.416 0.404 SPOT4 0.414 0.417 0.413 0.415 0.455 0.414 0.419 SPOT5 0.371 0.384 0.357 0.354 0.363 0.359 0.357 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 1418 1401 1459 1351 1480 1394 AMTB 536 621 0 0 0 0 0 ARFB 304 428 408 395 412 405 428 ASDB 362 303 345 366 295 403 341 BEMB 1634 1644 1640 1656 1658 1690 1662 BETB 406 413 413 364 404 417 346 CADB 478 468 503 461 419 538 438 CHAB 736 731 775 715 671 752 646 CICB 416 396 484 499 476 494 439 CRPB 419 422 383 449 362 292 367 DIOB 456 503 494 459 453 449 444 DJIB 496 475 459 465 462 475 458 EASB 505 494 408 447 465 415 497 EVEB 274 262 262 260 265 308 247 FAIB o 998 1077 986 1026 1056 1029 964 FUTB 442 415 431 366 431 439 395 GAVB 218 224 258 271 198 225 136 GREB 460 534 468 482 556 538 538 HBMB 454 475 503 484 507 495 404 HEMB 417 300 334 409 384 386 371 KIUB 536 550 585 534 583 636 538 KOLB 491 540 642 527 580 601 508 KRUB 458 393 430 453 436 465 410 LICB 277 344 494 463 391 418 427 MAHB 301 39 0 0 0 0 0 MALB 459 467 394 455 400 433 487 MANB o 453 400 425 465 424 440 458 MATB 603 517 499 542 535 594 543 METB 664 727 725 677 725 716 695 MIAB 455 415 507 533 444 391 445 MONB 579 594 546 539 534 525 538 MORB 479 490 448 419 520 490 491 MSPB 585 515 509 607 572 583 546 NOWB 280 347 393 331 262 277 333 REUB 341 433 380 370 401 397 405 REZB 754 702 708 800 724 666 788 RIKB 529 390 396 491 522 452 396 RIPB 611 626 653 602 578 650 635 ROTB 922 910 957 1002 1161 1074 1058 SALB 628 491 469 595 468 502 601 SANB 442 472 578 595 555 534 507 SCRB 485 523 442 413 544 477 426 SODB o 388 497 464 407 477 436 431 SPJB 1512 1540 1423 1504 1532 1435 1442 STJB 738 678 557 674 591 636 746 SYPB 1343 1327 1366 1227 1363 1388 1278 THUB 1358 1408 1287 1266 1332 1361 1271 TLHA 468 456 571 565 559 548 529 TRIB o 532 497 528 518 529 491 620 YASB 537 432 500 599 572 627 571 YELB 905 960 906 833 901 889 839 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 3712 1526 1703 3158 AMTB 388 162 278 377 ARFB 1100 373 524 924 ASDB 854 408 527 811 BEMB 4452 1586 1923 3981 BETB 881 612 650 849 CADB 993 663 826 903 CHAB 1538 1007 1249 1346 CICB 1068 596 709 954 CRPB 1108 344 398 986 DIOB 849 796 835 867 DJIB 1086 685 776 944 EASB 1090 684 908 954 EVEB 515 341 414 698 FAIB 2705 1002 1178 2536 FUTB 1108 451 595 946 GAVB 879 0 0 732 GREB 1362 499 708 1118 HBMB 1047 674 693 1018 HEMB 1032 377 482 879 KIUB 1201 922 1040 1194 KOLB 1275 775 981 1039 KRUB 1076 597 619 925 LICB 927 556 614 907 MAHB 178 37 54 106 MALB 965 629 778 883 MANB 1039 560 652 991 MATB 1318 664 761 1236 METB 1809 699 841 1762 MIAB 1155 647 581 964 MONB 1269 673 872 1143 MORB 1104 649 765 970 MSPB 1395 756 747 1147 NOWB 826 352 349 803 REUB 992 458 502 912 REZB 2301 563 612 1837 RIKB 1160 608 580 1015 RIPB 1914 375 674 1547 ROTB 3032 788 677 2829 SALB 1300 654 930 1050 SANB 1327 704 685 1120 SCRB 1163 651 707 950 SODB 1130 598 615 965 SPJB 3760 1499 1810 3572 STJB 1541 772 1048 1394 SYPB 3420 1320 1667 3124 THUB 3050 1511 1837 3125 TLHA 1498 420 674 1294 TRIB 1172 791 940 1006 YASB 1318 780 843 1059 YELB 2520 797 933 2201 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 14.4 20.6 15.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -23.6 +- 2.1 mm TY = 16.7 +- 2.1 mm TZ = 56.4 +- 2.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -3.3 +- 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 0.89 0.58 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr