****************************************************************************** dorisreport 19-Nov-2005 00:59:20 Message No 0424 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1343 = 05275 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1343 from 02-10-2005 to 08-10-2005 DORIS name (using day of start): 05275 Days of year: from 2005/275 to 2005/281 ============================================================== 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/ign05275wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05275wd04.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 1343 from 02-10-2005 to 08-10-2005 Total number of stations = 45 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.39 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 02-10-2005 19791 14 19777 0.1 03-10-2005 20451 50 20401 0.2 04-10-2005 22110 14 22096 0.1 05-10-2005 21754 14 21740 0.1 06-10-2005 21122 25 21097 0.1 07-10-2005 21884 15 21869 0.1 08-10-2005 22185 14 22171 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 5909 5829 6059 5870 5184 5916 5972 SPOT2 4341 4240 4715 4579 4570 4740 4663 SPOT4 4807 4810 5081 4949 4945 4754 4894 SPOT5 4720 5522 6241 6342 6398 6459 6642 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.401 0.397 0.396 0.398 0.396 0.404 0.400 SPOT2 0.425 0.431 0.436 0.434 0.434 0.424 0.432 SPOT4 0.434 0.419 0.415 0.419 0.408 0.424 0.419 SPOT5 0.358 0.368 0.362 0.367 0.353 0.370 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 1426 1359 1581 1594 1507 1639 1466 AMTB 25 43 94 77 59 61 68 ASDB 137 27 52 170 181 221 181 BEMB 1306 1414 1118 928 1273 1067 1027 CADB 426 482 572 490 384 577 558 CICB 388 406 481 443 481 499 442 CROB 276 403 394 388 427 381 457 DJIB 62 38 95 92 141 157 193 EASB 460 485 461 508 527 424 480 EVEB 238 186 271 257 217 255 246 FAIB o 897 1011 1049 1099 1036 1079 991 FUTB 398 369 399 433 413 433 390 HBKB 454 474 513 479 502 467 498 HEMB 273 278 330 381 334 258 346 JIUB 422 476 505 510 520 516 496 KIUB 449 542 610 546 575 611 556 KOLB 461 546 597 529 477 575 560 KRUB 429 409 505 422 422 464 457 LIBB 330 309 271 253 277 358 234 MALB 466 375 499 483 473 472 472 MANB o 347 416 477 403 397 421 468 MATB 429 403 464 487 466 428 439 METB 653 734 767 702 771 715 697 MIAB 443 516 577 543 472 504 562 MORB 367 501 423 444 528 381 473 MSPB 444 525 513 581 486 473 528 NOWB 351 398 339 389 351 435 465 PAQB 449 496 489 447 493 512 479 PDMB 484 381 388 498 482 459 486 REUB 460 400 415 419 433 479 426 REZB 654 623 662 774 534 581 773 RIPB 624 545 713 643 760 679 660 ROTB 971 1170 1246 1336 1092 1318 1412 SAKB 757 683 698 747 823 753 707 SANB 458 540 614 482 540 587 617 SCRB 354 499 465 495 437 507 469 SODB o 378 553 523 461 529 569 525 SPJB 1474 1408 1643 1573 1653 1546 1601 STJB 616 597 667 559 695 544 677 SYPB 1311 1290 1467 1368 1378 1400 1292 THUB 279 425 512 577 631 688 646 TLHA 448 579 541 502 542 566 602 TRIB o 369 408 451 494 469 479 540 YASB 488 435 608 627 526 511 546 YELB 866 840 891 857 916 886 873 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- DIOA 0 0 0 0 0 18 0 KRAB 29 151 106 72 60 0 39 this is due to the lack of data or to some stations related problems as described below DIOA 24 9 2005 1 1 2010 too few data KRAB 31 7 2005 1 1 2010 equipment problem, insufficient power 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3786 2040 2138 3012 AMTB 0 0 187 257 ASDB 0 233 345 476 BEMB 4267 1816 2045 504 CADB 1213 721 730 1041 CICB 1101 686 729 843 CROB 1175 443 610 662 DJIB 0 372 225 210 EASB 1152 887 825 837 EVEB 467 344 297 622 FAIB 2742 1186 1248 2303 FUTB 1145 486 552 887 HBKB 1324 735 630 1109 HEMB 953 309 399 686 JIUB 1378 663 760 899 KIUB 1476 826 956 1004 KOLB 1279 768 877 1169 KRUB 1120 674 739 787 LIBB 826 333 518 558 MALB 1115 809 776 796 MANB 1091 517 647 944 MATB 1069 404 739 1106 METB 1998 749 828 1734 MIAB 1317 782 794 1009 MORB 1111 632 705 865 MSPB 1375 712 688 969 NOWB 1212 353 528 819 PAQB 1200 543 893 990 PDMB 1301 566 694 868 REUB 939 660 674 1019 REZB 2035 554 671 1553 RIPB 1822 667 794 1661 ROTB 3368 1459 1502 2628 SAKB 1818 1189 1213 1298 SANB 1408 831 728 1144 SCRB 1162 723 729 836 SODB 1199 803 896 887 SPJB 3799 2153 2412 3097 STJB 1610 1059 860 1129 SYPB 3675 1533 1571 3117 THUB 0 1175 1239 1508 TLHA 1623 515 605 1225 TRIB 1104 682 743 900 YASB 1424 824 832 917 YELB 2580 885 899 2031 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- DIOA 0 0 0 18 KRAB 0 367 0 98 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 17.1 15.6 13.6 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -11.3 +- 2.1 mm TY = 9.9 +- 1.9 mm TZ = -8.9 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.9 +- 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 0.83 0.54 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr