****************************************************************************** dorisreport 23-Feb-2006 05:13:28 Message No 0511 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1357 = 06008 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1357 from 08-01-2006 to 14-01-2006 DORIS name (using day of start): 06008 Days of year: from 2006/8 to 2006/14 ============================================================== 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/ign06008wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06008wd04.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 1357 from 08-01-2006 to 14-01-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.65 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 08-01-2006 23804 9 23795 0.0 09-01-2006 23690 44 23646 0.2 10-01-2006 20770 8 20762 0.0 11-01-2006 22904 22 22882 0.1 12-01-2006 23262 29 23233 0.1 13-01-2006 23258 18 23240 0.1 14-01-2006 23112 9 23103 0.0 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 6602 6433 4073 6355 6415 6411 6449 SPOT2 4588 4811 4609 4538 4806 4601 4736 SPOT4 5081 5080 4823 4927 4903 4943 4743 SPOT5 7524 7322 7257 7062 7109 7285 7175 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.380 0.387 0.413 0.402 0.410 0.411 0.407 SPOT2 0.421 0.405 0.411 0.398 0.430 0.439 0.451 SPOT4 0.411 0.412 0.417 0.405 0.418 0.426 0.417 SPOT5 0.353 0.356 0.353 0.358 0.360 0.365 0.358 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 1504 1475 1455 1449 1541 1501 1508 AMTB 493 455 388 467 429 463 414 ASDB 374 320 322 366 340 321 374 BEMB 1651 1555 1454 1786 1697 1641 1743 CHAB 678 717 526 687 695 627 667 CICB 458 455 475 484 436 474 490 CROB 343 330 264 314 295 367 377 EASB 496 513 375 410 481 475 453 EVEB 272 235 200 286 250 247 271 FAIB o 1046 1138 903 997 1089 1065 1117 FUTB 428 476 319 350 462 383 435 HBKB 491 462 424 416 497 543 506 HEMB 315 367 262 331 376 299 261 JIUB 490 579 501 486 498 587 545 KESB 533 524 418 562 575 505 484 KIUB 624 668 550 567 633 641 575 KOLB 465 521 456 596 517 495 549 KRUB 385 442 412 479 438 408 423 LICB 439 420 370 410 350 479 446 MALB 459 506 369 445 449 442 453 MANB o 470 446 374 463 435 460 402 MATB 480 451 372 491 444 450 412 METB 669 755 701 746 742 730 729 MIAB 547 489 465 550 506 522 536 MONB 544 604 428 516 559 538 543 MORB 418 463 483 449 468 572 349 MSPB 500 458 529 508 583 613 483 NOWB 401 335 363 343 331 336 407 PAQB 470 542 420 477 510 496 547 PDMB 425 513 443 483 538 464 413 REUB 314 376 334 370 325 381 406 REZB 682 684 737 508 681 741 696 RIPB 686 700 479 746 681 627 613 ROTB 1257 1229 1167 1176 1235 1351 1328 SALB 434 482 353 433 547 441 424 SANB 533 440 463 540 405 534 509 SCRB 434 411 441 400 453 502 482 SODB o 467 433 350 195 402 494 468 SPJB 1622 1605 1372 1682 1594 1570 1535 STJB 740 294 0 0 0 0 0 SYPB 1352 1396 1157 1413 1362 1339 1369 THUB 1372 1365 1242 1353 1369 1257 1340 TLHA 533 586 598 540 518 558 526 TRIB o 579 487 413 559 449 491 547 YASB 562 494 495 483 523 453 559 YELB 948 978 715 947 908 902 870 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 3749 1958 2089 2955 AMTB 1138 574 519 1079 ASDB 920 419 458 782 BEMB 4158 2009 2144 3786 CHAB 1587 956 955 1345 CICB 1100 688 700 976 CROB 831 413 442 715 EASB 1009 860 880 817 EVEB 487 395 332 619 FAIB 2655 1116 1319 2578 FUTB 994 446 650 959 HBKB 1166 612 663 1091 HEMB 835 335 412 816 JIUB 1276 676 848 1119 KESB 1319 715 686 1072 KIUB 1374 974 1066 1184 KOLB 1204 742 855 1032 KRUB 1084 633 657 889 LICB 1020 563 606 914 MALB 1019 679 728 896 MANB 1122 585 614 918 MATB 1016 605 588 1060 METB 2012 731 800 1749 MIAB 1221 812 793 1005 MONB 1243 727 822 1131 MORB 1114 590 798 926 MSPB 1230 774 799 1070 NOWB 977 407 456 857 PAQB 1017 824 845 1015 PDMB 1254 512 636 1090 REUB 870 471 446 898 REZB 1974 524 704 1738 RIPB 1648 828 772 1509 ROTB 3191 1349 1476 3116 SALB 1116 671 682 894 SANB 1196 681 642 1129 SCRB 1016 700 701 903 SODB 959 541 518 972 SPJB 3721 2079 2240 3490 STJB 346 215 240 284 SYPB 3419 1496 1599 3171 THUB 3240 1811 1649 3054 TLHA 1672 514 567 1283 TRIB 1186 824 808 952 YASB 1238 851 718 985 YELB 2509 898 919 2167 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 16.6 17.8 14.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -7.5 +- 1.8 mm TY = -2.7 +- 1.8 mm TZ = -12.0 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.2 +- 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 1.25 0.29 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr