****************************************************************************** dorisreport 04-Jan-2006 19:34:18 Message No 0462 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1350 = 05324 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1350 from 20-11-2005 to 26-11-2005 DORIS name (using day of start): 05324 Days of year: from 2005/324 to 2005/330 ============================================================== 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/ign05324wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05324wd04.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 1350 from 20-11-2005 to 26-11-2005 Total number of stations = 45 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.90 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 20-11-2005 23575 17 23558 0.1 21-11-2005 23233 36 23197 0.2 22-11-2005 23420 31 23389 0.1 23-11-2005 21701 16 21685 0.1 24-11-2005 23293 13 23280 0.1 25-11-2005 23160 13 23147 0.1 26-11-2005 22349 17 22332 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 6438 6326 6380 6436 6453 6435 5414 SPOT2 4782 4844 4835 5077 4656 4816 4733 SPOT4 5270 5088 4998 5016 4984 4968 5092 SPOT5 7068 6939 7176 5156 7187 6928 7093 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.375 0.410 0.398 0.395 0.386 0.401 0.393 SPOT2 0.412 0.427 0.425 0.432 0.421 0.430 0.432 SPOT4 0.403 0.407 0.424 0.412 0.426 0.397 0.416 SPOT5 0.355 0.365 0.363 0.359 0.347 0.356 0.355 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 1467 1535 1422 1541 1497 1447 1474 BEMB 1713 1627 1657 1702 1741 1616 1625 CADB 509 455 373 520 492 469 427 CHAB 657 678 634 691 605 611 565 CICB 515 467 423 468 474 450 484 CROB 349 335 345 407 308 364 303 DIOA o 482 531 446 487 475 441 488 EASB 492 409 520 497 432 495 503 EVEB 258 328 278 230 262 256 308 FAIB o 1060 1100 1076 1148 1062 1021 1078 FUTB 398 381 405 486 396 400 382 HBKB 517 465 523 584 486 482 473 HEMB 322 370 421 321 276 392 335 JIUB 515 478 534 581 552 519 542 KESB 487 533 510 439 456 546 517 KIUB 602 563 633 643 574 610 599 KOLB 614 592 404 538 561 475 459 KRUB 354 372 225 342 336 385 266 LIBB 488 390 424 366 354 441 278 MALB 513 475 539 460 441 527 486 MANB o 464 405 441 392 487 461 356 MATB 403 464 457 440 455 397 405 METB 732 719 717 676 750 766 723 MIAB 536 535 530 517 582 582 505 MORB 540 446 473 457 433 450 515 MSPB 582 572 597 528 571 528 502 NOWB 260 332 292 352 469 222 291 PAQB 553 448 530 555 562 356 373 PDMB 422 477 558 435 447 555 403 REUB 427 427 394 414 406 398 424 REZB 644 642 726 725 718 726 686 RIPB 660 652 589 650 568 630 588 ROTB 1304 1241 1334 1310 1326 1288 1357 SALB 347 364 398 329 310 433 421 SANB 605 482 490 562 573 552 520 SCRB 535 487 473 543 496 450 540 SODB o 559 444 493 572 457 494 514 SPJB 1581 1551 1641 1565 1581 1586 1480 STJB 649 646 761 593 665 699 638 SYPB 1386 1344 1343 1325 1343 1427 1236 THUB 1248 1230 1284 1307 1290 1303 1245 TLHA 483 453 554 494 513 561 427 TRIB o 434 535 499 458 523 417 454 YASB 364 550 560 512 549 564 559 YELB 939 882 894 852 831 894 821 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- KRAB 38 108 114 87 56 37 0 this is due to the lack of data or to some stations related problems as described below 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 3665 1826 2169 2992 BEMB 4451 1927 2066 3814 CADB 1100 757 720 879 CHAB 1499 843 1042 1290 CICB 1135 707 723 923 CROB 891 458 438 757 DIOA 1042 741 806 942 EASB 1088 822 849 972 EVEB 497 342 410 748 FAIB 2764 1242 1300 2531 FUTB 1040 444 603 946 HBKB 1285 761 709 983 HEMB 901 339 429 927 JIUB 1409 728 742 1085 KESB 1229 696 709 1041 KIUB 1446 904 1027 1181 KOLB 1213 829 874 952 KRUB 761 464 550 656 LIBB 954 490 694 794 MALB 1130 794 828 902 MANB 1115 558 648 867 MATB 1121 441 614 1012 METB 1910 759 901 1711 MIAB 1280 854 891 1013 MORB 1180 629 778 937 MSPB 1340 766 849 1108 NOWB 863 359 390 741 PAQB 1181 865 758 822 PDMB 1223 609 597 1053 REUB 987 623 665 799 REZB 1962 689 695 1754 RIPB 1763 555 766 1469 ROTB 3387 1559 1552 3062 SALB 984 635 381 810 SANB 1356 918 690 1060 SCRB 1229 809 823 894 SODB 1217 833 851 903 SPJB 3737 2121 2234 3440 STJB 1568 985 963 1383 SYPB 3471 1497 1530 3222 THUB 3153 1782 1669 2721 TLHA 1483 438 516 1195 TRIB 1119 591 752 1061 YASB 1236 821 826 1003 YELB 2483 883 888 2068 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 0 444 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 17.0 11.7 18.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -5.6 +- 1.8 mm TY = 8.9 +- 1.8 mm TZ = -3.5 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -3.1 +- 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 1.31 0.60 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr