****************************************************************************** dorisreport 15-Dec-2005 02:36:40 Message No 0447 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1348 = 05310 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1348 from 06-11-2005 to 12-11-2005 DORIS name (using day of start): 05310 Days of year: from 2005/310 to 2005/316 ============================================================== 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/ign05310wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05310wd04.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 1348 from 06-11-2005 to 12-11-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 3.27 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 06-11-2005 23333 29 23304 0.1 07-11-2005 23134 30 23104 0.1 08-11-2005 22563 22 22541 0.1 09-11-2005 21774 14 21760 0.1 10-11-2005 22520 23 22497 0.1 11-11-2005 24120 15 24105 0.1 12-11-2005 24714 11 24703 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 6173 6175 6277 6077 6186 6753 6710 SPOT2 5155 5044 4551 4524 4720 4752 4990 SPOT4 5015 4799 4872 4642 4839 5333 5484 SPOT5 6961 7086 6841 6517 6752 7267 7519 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.394 0.403 0.405 0.409 0.406 0.383 0.405 SPOT2 0.417 0.429 0.431 0.458 0.436 0.407 0.418 SPOT4 0.418 0.427 0.425 0.419 0.415 0.411 0.425 SPOT5 0.362 0.369 0.371 0.356 0.358 0.343 0.352 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 1511 1479 1450 1520 1486 1534 1532 ASDB 244 275 304 225 230 330 329 BEMB 1696 1696 1677 1681 1706 1769 1588 CADB 418 450 527 434 425 374 419 CHAB 139 162 80 574 624 663 672 CICB 448 449 480 443 485 527 421 CROB 370 329 387 368 332 330 311 DIOA o 0 0 0 0 0 268 533 EASB 562 535 464 462 514 452 560 EVEB 280 249 253 272 265 302 285 FAIB o 1121 1099 1020 1051 1089 1105 1093 FUTB 457 437 358 395 370 417 430 HBKB 470 535 536 489 515 475 507 HEMB 431 364 282 375 392 374 362 JIUB 524 555 452 381 470 539 494 KESB 589 519 540 526 563 551 566 KIUB 605 582 616 611 587 603 550 KOLB 505 572 530 506 526 559 530 KRUB 460 362 344 267 324 311 296 LIBB 446 452 322 313 396 402 472 MALB 533 531 446 454 517 490 493 MANB o 385 402 469 420 394 449 458 MATB 429 431 424 466 417 445 482 METB 709 747 766 762 707 726 726 MIAB 503 450 556 571 482 529 519 MORB 481 516 478 444 519 494 406 MSPB 587 480 470 588 595 559 452 NOWB 369 362 415 344 264 391 389 PAQB 484 561 544 478 532 511 503 PDMB 461 409 458 560 500 439 458 REUB 407 492 474 407 426 433 442 REZB 725 546 683 729 668 569 690 RIPB 722 704 701 694 685 729 659 ROTB 1153 1228 1199 1191 1297 1187 1220 SAKB 785 796 719 768 802 740 725 SALB 306 384 284 346 288 408 481 SANB 525 554 613 574 544 539 551 SCRB 453 534 441 465 546 505 486 SODB o 461 573 563 442 553 520 511 SPJB 1605 1649 1647 1540 1629 1569 1683 STJB 0 0 0 0 62 652 766 SYPB 1369 1372 830 0 486 1304 1277 THUB 1384 1446 1308 1172 1272 1326 1411 TLHA 457 499 574 537 547 500 515 TRIB o 505 490 507 434 437 498 562 YASB 511 507 489 584 573 546 531 YELB 879 911 949 883 938 901 917 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 112 51 67 85 101 45 49 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 3674 1945 2182 3019 ASDB 716 262 409 707 BEMB 4344 2043 2300 3960 CADB 1035 673 674 850 CHAB 930 870 565 716 CICB 1086 713 696 951 CROB 897 412 447 793 DIOA 276 211 186 174 EASB 1153 887 989 938 EVEB 515 418 396 645 FAIB 2829 1219 1229 2576 FUTB 1094 525 516 913 HBKB 1278 659 698 1182 HEMB 1046 365 497 820 JIUB 1378 629 716 930 KESB 1395 778 744 1141 KIUB 1476 870 1001 1194 KOLB 1281 829 850 1026 KRUB 914 462 540 651 LIBB 1007 528 636 847 MALB 1187 771 788 917 MANB 1128 569 525 990 MATB 1159 404 583 1103 METB 1939 830 806 1783 MIAB 1267 820 797 987 MORB 1112 765 757 936 MSPB 1330 697 804 1113 NOWB 1109 396 303 888 PAQB 1200 774 880 1004 PDMB 1229 592 561 1107 REUB 1012 648 709 935 REZB 2108 398 717 1588 RIPB 1832 852 957 1506 ROTB 3353 1187 1233 3094 SAKB 1818 1227 1285 1309 SALB 1052 498 491 756 SANB 1410 806 777 1141 SCRB 1204 688 782 941 SODB 1196 835 849 973 SPJB 3817 2323 2298 3435 STJB 522 277 325 432 SYPB 2500 1080 1103 2173 THUB 3214 1838 1747 2913 TLHA 1540 417 514 1338 TRIB 1121 696 857 947 YASB 1389 814 808 973 YELB 2645 932 902 2128 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 0 516 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 19.9 20.0 16.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -5.0 +- 1.7 mm TY = 3.2 +- 1.7 mm TZ = -5.8 +- 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 1.25 0.75 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr