****************************************************************************** dorisreport 09-Jan-2006 20:55:48 Message No 0471 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1351 = 05331 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1351 from 27-11-2005 to 03-12-2005 DORIS name (using day of start): 05331 Days of year: from 2005/331 to 2005/337 ============================================================== 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/ign05331wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05331wd04.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 1351 from 27-11-2005 to 03-12-2005 Total number of stations = 46 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 -------------------------------------------------------- 27-11-2005 23472 14 23458 0.1 28-11-2005 23293 19 23274 0.1 29-11-2005 23395 14 23381 0.1 30-11-2005 23538 10 23528 0.0 01-12-2005 22983 3 22980 0.0 02-12-2005 23523 6 23517 0.0 03-12-2005 24050 14 24036 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 6607 6453 6294 6638 6434 6321 6756 SPOT2 4614 4475 4758 4891 4540 5078 4972 SPOT4 5053 5032 5006 5004 4927 5114 5059 SPOT5 7184 7314 7323 6995 7079 7004 7249 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.384 0.389 0.404 0.394 0.396 0.401 0.397 SPOT2 0.400 0.410 0.409 0.414 0.417 0.417 0.420 SPOT4 0.419 0.426 0.413 0.410 0.412 0.424 0.420 SPOT5 0.346 0.347 0.357 0.362 0.362 0.354 0.350 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 1522 1536 1551 1657 1489 1535 1657 ASDB 0 272 294 285 364 306 350 BEMB 1756 1618 1738 1742 1770 1745 1714 CADB 350 459 489 566 439 445 533 CHAB 670 693 716 712 655 725 688 CICB 490 424 479 518 458 456 483 CROB 334 310 351 331 339 360 339 DIOA o 524 458 463 518 493 444 510 EASB 450 503 452 429 474 528 510 EVEB 281 278 243 261 294 287 270 FAIB o 1069 1062 1032 1033 1046 1151 1088 FUTB 444 464 395 386 375 458 444 HBKB 455 459 415 497 361 555 557 HEMB 335 363 363 336 379 378 319 JIUB 543 489 509 511 452 550 580 KESB 517 576 540 472 567 515 507 KIUB 637 560 592 605 605 620 614 KOLB 531 490 573 549 468 537 603 KRUB 361 331 329 430 313 438 297 LIBB 444 200 0 0 0 0 0 MALB 512 515 487 495 510 519 507 MANB o 489 438 475 459 454 454 452 MATB 454 465 446 357 378 458 454 METB 772 716 758 732 694 741 718 MIAB 552 512 520 578 564 518 506 MORB 446 323 545 470 441 505 461 MSPB 493 476 521 572 557 557 495 NOWB 414 380 330 391 372 294 378 PAQB 456 465 466 515 483 529 569 PDMB 465 440 452 419 482 486 377 REUB 463 433 453 479 418 444 506 REZB 548 737 542 649 689 675 558 RIPB 743 664 753 697 666 691 726 ROTB 1055 1311 1132 1279 1226 1193 1204 SALB 391 462 365 329 458 296 431 SANB 525 557 548 621 505 518 573 SCRB 423 499 515 480 495 484 461 SODB o 370 465 406 447 463 464 554 SPJB 1630 1427 1732 1494 1582 1569 1640 STJB 704 687 700 671 682 714 656 SYPB 1343 1281 1358 1418 1282 1371 1390 THUB 1364 1403 1517 1234 1243 1447 1406 TLHA 542 515 490 510 458 273 548 TRIB o 567 479 452 434 567 479 513 YASB 573 574 477 570 613 518 517 YELB 877 902 926 894 859 901 925 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 3870 2135 2149 3117 ASDB 624 343 396 657 BEMB 4486 2130 2280 3754 CADB 1167 674 723 932 CHAB 1649 976 1132 1363 CICB 1195 693 675 935 CROB 836 421 445 793 DIOA 1118 769 774 950 EASB 1095 794 933 898 EVEB 523 412 401 655 FAIB 2891 1164 1183 2548 FUTB 1108 610 494 952 HBKB 1375 421 647 1076 HEMB 989 420 374 852 JIUB 1333 639 793 1107 KESB 1348 772 730 1046 KIUB 1473 861 994 1243 KOLB 1333 807 830 1011 KRUB 976 483 581 656 LIBB 247 71 132 225 MALB 1175 797 828 968 MANB 1275 613 587 955 MATB 1133 429 624 1005 METB 2004 800 791 1752 MIAB 1275 876 823 991 MORB 1057 730 676 938 MSPB 1311 727 710 1108 NOWB 1021 399 441 871 PAQB 1217 704 837 1025 PDMB 1140 594 602 979 REUB 1077 661 749 918 REZB 2103 287 641 1577 RIPB 1844 949 894 1508 ROTB 3486 1037 1182 3055 SALB 1073 552 644 686 SANB 1386 746 767 1165 SCRB 1190 716 704 926 SODB 1165 566 743 918 SPJB 3738 2229 2222 3455 STJB 1606 1033 1017 1404 SYPB 3534 1507 1554 3148 THUB 3323 1857 1868 2970 TLHA 1493 393 466 1130 TRIB 1180 766 828 902 YASB 1348 894 841 1004 YELB 2549 909 876 2163 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 15.4 21.9 20.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -4.7 +- 1.7 mm TY = 2.1 +- 1.7 mm TZ = -20.1 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.9 +- 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 1.63 0.85 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr