****************************************************************************** dorisreport 06-Jun-2006 22:37:54 Message No 0603 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1372 = 06113 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1372 from 23-04-2006 to 29-04-2006 DORIS name (using day of start): 06113 Days of year: from 2006/113 to 2006/119 ============================================================== 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/ign06113wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06113wd04.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 1372 from 23-04-2006 to 29-04-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.88 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 23-04-2006 21556 20 21536 0.1 24-04-2006 21418 15 21403 0.1 25-04-2006 23030 45 22985 0.2 26-04-2006 23162 55 23107 0.2 27-04-2006 23228 13 23215 0.1 28-04-2006 23105 20 23085 0.1 29-04-2006 23598 38 23560 0.2 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 4742 4809 6402 6475 6509 6452 6516 SPOT2 4548 4349 4713 4823 4571 4590 4536 SPOT4 4842 4881 4930 4749 4884 4765 5063 SPOT5 7404 7364 6940 7060 7251 7278 7445 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.382 0.379 0.398 0.413 0.397 0.408 0.404 SPOT2 0.423 0.408 0.412 0.415 0.410 0.413 0.427 SPOT4 0.418 0.420 0.425 0.417 0.425 0.422 0.420 SPOT5 0.364 0.346 0.358 0.371 0.358 0.362 0.364 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 1257 1217 1496 1444 1378 1415 1457 AMTB 375 434 509 438 456 401 432 ASDB 304 274 254 392 311 346 377 BEMB 1303 1303 1664 1625 1628 1645 1648 CADB 463 454 512 413 444 566 574 CHAB 670 585 670 703 660 697 665 CROB 332 270 353 354 336 373 404 EASB 427 393 400 488 515 443 463 EVEB 204 181 265 321 271 236 260 FAIB o 816 805 1040 1052 1024 1036 1053 FUTB 379 326 385 422 460 475 383 GAVB 323 314 162 102 124 165 179 GREB 377 463 575 504 536 436 487 HEMB 276 356 331 387 372 308 331 JIUB 448 462 466 414 524 564 504 KESB 467 462 534 564 555 535 510 KIUB 475 507 601 489 531 599 583 KOLB 501 443 602 593 453 577 586 KRUB 391 387 495 513 465 488 510 LICB 310 260 332 275 271 429 365 MAHB 351 307 374 334 315 355 398 MALB 356 375 412 273 479 467 404 MANB o 406 396 472 408 436 369 493 METB 687 630 780 766 760 736 785 MIAB 466 377 431 499 436 439 499 MONB 479 517 500 556 565 567 511 MORB 351 462 473 452 388 444 429 MSPB 395 528 517 578 606 573 541 PAQB 0 0 0 503 527 530 555 PDMB 408 455 506 489 602 499 526 REUB 362 291 386 386 358 411 285 REZB 411 604 716 655 794 683 712 RIPB 629 580 619 608 539 634 586 ROTB 859 872 1179 1116 1175 1146 1149 SALB 0 0 0 0 0 0 125 SANB 457 432 611 472 545 578 610 SCRB 317 293 490 482 460 473 403 SODB o 373 321 501 420 394 511 412 SPJB 1373 1356 1444 1491 1537 1406 1402 STJB 496 584 616 633 693 565 589 SYPB 1232 1182 1379 1380 1335 1251 1381 THUB 1056 1135 1238 1319 1312 1307 1317 TLHA 483 398 548 567 571 593 635 TRIB o 484 432 438 581 537 453 545 YASB 564 454 514 608 557 463 588 YELB 780 728 809 814 743 834 774 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- MATB 419 421 379 390 445 153 255 this is due to the lack of data or to some stations related problems as described below MATB 8 11 2005 1 1 2010 antenna fall 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3638 1647 1685 3080 AMTB 1054 559 607 1016 ASDB 698 433 589 707 BEMB 3777 1847 1811 3743 CADB 1069 699 825 1043 CHAB 1488 1085 1089 1297 CROB 884 439 532 695 EASB 856 840 916 824 EVEB 401 373 326 700 FAIB 2353 1022 1213 2501 FUTB 933 590 604 915 GAVB 369 0 0 1146 GREB 1188 581 600 1190 HEMB 977 403 363 817 JIUB 1055 760 868 967 KESB 1264 758 699 1137 KIUB 1170 888 1006 1114 KOLB 1171 756 998 1075 KRUB 999 718 734 941 LICB 804 508 475 680 MAHB 867 380 535 870 MALB 746 696 624 895 MANB 1071 588 738 842 METB 1933 687 925 1838 MIAB 1132 588 590 1055 MONB 1160 837 848 1069 MORB 867 623 778 917 MSPB 1234 773 817 1110 PAQB 701 475 523 579 PDMB 1041 724 792 1096 REUB 834 484 469 882 REZB 1774 624 708 1631 RIPB 1740 528 527 1565 ROTB 2853 847 910 3134 SALB 0 132 0 0 SANB 1029 875 798 1212 SCRB 861 670 698 882 SODB 1014 565 611 955 SPJB 3475 1685 1755 3434 STJB 1378 881 816 1324 SYPB 3319 1479 1525 3175 THUB 2918 1706 1612 2717 TLHA 1394 518 792 1243 TRIB 1101 818 763 1024 YASB 1166 840 883 1111 YELB 1794 867 904 2098 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- MATB 889 448 524 753 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 16.3 22.0 18.0 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -17.6 +- 1.8 mm TY = 10.9 +- 1.8 mm TZ = 72.6 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.5 +- 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 1.17 0.60 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr