****************************************************************************** dorisreport 09-Nov-2005 05:09:25 Message No 0399 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1341 = 05261 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1341 from 18-09-2005 to 24-09-2005 DORIS name (using day of start): 05261 Days of year: from 2005/261 to 2005/267 ============================================================== 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/ign05261wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05261wd04.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 1341 from 18-09-2005 to 24-09-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.71 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 18-09-2005 21361 3 21358 0.0 19-09-2005 24197 4786 19411 19.8 20-09-2005 25705 22 25683 0.1 21-09-2005 26073 20 26053 0.1 22-09-2005 24665 30 24635 0.1 23-09-2005 24827 23 24804 0.1 24-09-2005 21716 35 21681 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 5867 6812 7788 8107 6998 7604 5895 SPOT2 4355 0 4952 5165 4910 4546 4527 SPOT4 4727 5010 5260 5021 4978 5034 4689 SPOT5 6409 7589 7683 7760 7749 7620 6570 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.389 0.430 0.446 0.441 0.429 0.436 0.412 SPOT2 0.408 0.000 0.453 0.449 0.442 0.428 0.427 SPOT4 0.407 0.417 0.424 0.433 0.423 0.443 0.425 SPOT5 0.358 0.387 0.378 0.378 0.378 0.373 0.363 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 1548 1311 1566 1577 1400 1515 1558 AMTB 106 62 71 56 80 67 83 ASDB 226 304 335 284 343 302 300 BEMB 1464 1572 1810 1734 1646 1551 1780 CADB 554 433 434 523 491 368 443 CICB 461 453 485 491 429 490 452 CROB 362 369 404 417 410 396 403 DIOA o 0 0 435 115 0 0 0 DJIB 167 99 136 129 123 152 147 EASB 401 466 521 484 425 483 463 EVEB 267 249 264 275 243 247 276 FAIB o 1009 961 1085 1093 1010 1065 1088 FUTB 391 240 445 425 389 291 357 HBKB 0 0 0 0 0 0 0 HEMB 304 360 273 203 229 201 230 JIUB 121 113 373 517 466 460 508 KIUB 565 504 592 604 541 604 602 KOLB 554 357 523 580 547 474 547 KRAB o 0 88 87 44 0 15 40 KRUB 505 397 453 413 398 248 330 LIBB 358 387 363 382 370 313 349 MALB 450 459 506 415 354 495 500 MANB o 398 449 453 474 413 477 460 MATB 391 479 483 443 422 408 402 METB 697 699 707 707 672 707 677 MIAB 527 443 432 534 524 522 577 MORB 411 427 526 431 464 461 473 MSPB 542 544 563 519 465 607 578 NOWB 348 279 342 457 381 470 403 PAQB 432 405 461 509 465 408 480 PDMB 460 417 482 396 457 480 446 REUB 474 424 427 494 426 414 455 REZB 547 627 424 669 762 747 595 RIPB 617 637 751 644 662 595 704 ROTB 1177 1174 1095 1203 1326 1399 1263 SAKB 369 397 297 323 311 302 274 SANB 590 353 506 578 497 505 517 SCRB 413 351 388 427 332 416 468 SODB o 496 481 518 577 442 509 549 SPJB 1559 1482 1642 1599 1510 1525 1645 STJB 315 680 587 687 610 671 616 SYPB 1336 1296 1348 1323 1314 1284 1432 THUB 736 680 639 565 425 532 548 TLHA 508 508 490 559 567 551 562 TRIB o 408 534 468 466 568 449 484 YASB 540 602 441 545 495 542 562 YELB 854 789 852 971 881 853 864 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 3705 1937 2188 3071 AMTB 43 0 161 340 ASDB 749 329 495 689 BEMB 4100 2012 2270 4461 CADB 1243 710 729 807 CICB 1140 699 740 1099 CROB 1089 415 493 945 DIOA 136 221 123 101 DJIB 37 561 229 151 EASB 961 854 852 1023 EVEB 519 316 406 641 FAIB 2655 1271 1127 3032 FUTB 977 548 387 849 HBKB 0 0 0 0 HEMB 282 392 456 963 JIUB 940 645 476 699 KIUB 1324 924 1004 1118 KOLB 1272 725 825 1256 KRAB 0 277 0 0 KRUB 977 618 551 973 LIBB 866 501 671 807 MALB 1047 778 806 838 MANB 1212 667 569 954 MATB 1061 371 719 1069 METB 1882 724 892 1630 MIAB 1167 727 900 1016 MORB 1040 683 801 872 MSPB 1326 773 778 1159 NOWB 1072 396 375 1037 PAQB 1162 470 908 1113 PDMB 1068 609 580 1342 REUB 1023 689 744 884 REZB 1797 722 358 1722 RIPB 1739 666 1005 1473 ROTB 3362 1669 1197 2858 SAKB 176 924 594 714 SANB 1288 719 743 1215 SCRB 941 577 700 817 SODB 1180 824 887 1103 SPJB 3526 2114 2404 3540 STJB 1358 882 986 1205 SYPB 3642 1299 1698 3625 THUB 410 1442 1159 1290 TLHA 1602 529 505 1614 TRIB 1091 659 803 1183 YASB 1285 737 842 1104 YELB 2459 860 1007 2339 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 24.2 22.8 15.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -14.2 +- 1.8 mm TY = 19.8 +- 1.8 mm TZ = 28.7 +- 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 0.79 0.56 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr