****************************************************************************** dorisreport 20-Mar-2006 22:06:40 Message No 0536 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1362 = 06043 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1362 from 12-02-2006 to 18-02-2006 DORIS name (using day of start): 06043 Days of year: from 2006/43 to 2006/49 ============================================================== 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/ign06043wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06043wd04.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 1362 from 12-02-2006 to 18-02-2006 Total number of stations = 49 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 -------------------------------------------------------- 12-02-2006 24317 4 24313 0.0 13-02-2006 23998 14 23984 0.1 14-02-2006 23945 15 23930 0.1 15-02-2006 23233 18 23215 0.1 16-02-2006 24218 6 24212 0.0 17-02-2006 24238 9 24229 0.0 18-02-2006 22727 16 22711 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 6843 6697 6796 6340 6826 6772 6827 SPOT2 5043 4932 4690 4687 4877 4870 3408 SPOT4 4957 4902 5003 4907 5172 5076 5044 SPOT5 7470 7453 7441 7281 7337 7511 7432 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.394 0.406 0.392 0.405 0.406 0.390 0.386 SPOT2 0.408 0.415 0.416 0.448 0.426 0.420 0.400 SPOT4 0.395 0.410 0.409 0.425 0.407 0.436 0.431 SPOT5 0.363 0.362 0.351 0.371 0.344 0.348 0.343 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 1370 1346 1457 1364 1406 1409 1334 AMTB 429 502 495 502 475 448 435 ASDB 301 320 271 326 288 281 283 BEMB 1624 1548 1620 1669 1599 1660 1721 CADB 491 346 561 538 436 528 506 CHAB 729 724 707 693 706 708 640 CICB 449 462 493 0 0 0 0 CROB 329 354 334 340 360 360 321 EASB 232 0 0 0 465 499 451 EVEB 322 264 233 280 258 275 310 FAIB o 1048 1018 1084 1024 1047 1072 929 FUTB 399 440 467 378 410 427 384 GREB 509 574 484 521 579 514 493 HBKB 444 508 554 445 503 521 454 HEMB 351 399 369 351 403 340 300 JIUB 454 545 548 488 547 565 512 KESB 562 522 500 530 490 547 506 KIUB 576 663 618 643 625 645 586 KOLB 577 510 582 631 521 569 461 KRUB 374 366 395 456 349 364 469 LICB 418 342 480 381 355 477 322 MAHB 355 401 407 380 368 400 373 MALB 439 492 468 355 447 468 413 MANB o 396 325 344 465 429 464 418 MATB 428 447 474 453 397 410 434 METB 791 818 774 816 778 735 771 MIAB 466 424 415 480 471 457 434 MONB 503 577 562 567 579 512 482 MORB 425 463 490 498 466 529 411 MSPB 579 476 503 507 576 579 404 NOWB 366 360 323 402 345 372 367 PAQB 509 521 594 548 512 558 450 PDMB 408 517 430 422 518 420 446 REUB 362 356 421 374 356 393 325 REZB 754 676 561 642 761 767 628 RIPB 572 609 615 668 588 520 622 ROTB 1132 1053 1139 1121 1109 1185 1026 SALB 415 444 438 406 505 310 319 SANB 587 496 589 596 560 589 554 SCRB 456 461 481 467 490 412 361 SODB o 370 410 507 486 412 459 369 SPJB 1482 1544 1516 1422 1481 1428 1451 STJB 610 695 599 629 641 577 657 SYPB 1336 1352 827 468 1362 1348 1329 THUB 1269 1360 1374 1218 1208 1225 1139 TLHA 607 586 562 591 629 599 544 TRIB o 636 482 466 597 461 519 561 YASB 617 531 499 532 552 491 558 YELB 854 874 923 888 841 893 837 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 3765 1595 1660 2947 AMTB 1195 599 572 1110 ASDB 790 342 396 722 BEMB 4426 1750 1915 3725 CADB 1181 817 732 872 CHAB 1649 1009 1170 1356 CICB 518 303 256 427 CROB 840 379 514 784 EASB 533 372 443 483 EVEB 520 413 444 640 FAIB 2802 1042 1181 2494 FUTB 1099 548 541 972 GREB 1375 704 638 1151 HBKB 1268 633 649 1073 HEMB 919 465 415 891 JIUB 1335 746 739 1091 KESB 1378 713 746 1025 KIUB 1483 979 1057 1179 KOLB 1318 866 960 957 KRUB 1123 548 538 771 LICB 1040 498 575 830 MAHB 1062 420 539 870 MALB 1013 652 737 881 MANB 1182 448 549 834 MATB 1097 451 597 1076 METB 2222 699 850 1922 MIAB 1194 537 621 963 MONB 1301 725 793 1144 MORB 1091 761 695 960 MSPB 1308 732 687 1094 NOWB 980 335 532 897 PAQB 1253 765 907 978 PDMB 1197 602 613 955 REUB 931 516 512 827 REZB 2063 489 679 1726 RIPB 1777 542 554 1489 ROTB 3420 786 840 2988 SALB 1119 553 511 894 SANB 1314 887 901 1096 SCRB 1116 691 638 885 SODB 1156 522 570 926 SPJB 3824 1653 1781 3338 STJB 1505 899 832 1389 SYPB 3037 1257 1309 2661 THUB 3260 1551 1582 2685 TLHA 1660 473 819 1335 TRIB 1242 749 923 1054 YASB 1253 902 875 1028 YELB 2593 802 863 2084 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 15.8 21.3 15.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -16.5 +- 1.8 mm TY = 12.6 +- 1.7 mm TZ = 6.1 +- 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 1.02 0.58 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr