****************************************************************************** dorisreport 05-Apr-2006 07:54:22 Message No 0548 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1363 = 06050 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1363 from 19-02-2006 to 25-02-2006 DORIS name (using day of start): 06050 Days of year: from 2006/50 to 2006/56 ============================================================== 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/ign06050wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06050wd04.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 1363 from 19-02-2006 to 25-02-2006 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.90 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 19-02-2006 21038 134 20904 0.6 20-02-2006 24462 19 24443 0.1 21-02-2006 24792 12 24780 0.0 22-02-2006 24526 15 24511 0.1 23-02-2006 23749 10 23739 0.0 24-02-2006 19317 19 19298 0.1 25-02-2006 21911 19 21892 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 6685 6719 6899 6807 6590 6705 6521 SPOT2 1447 4820 5026 5079 4836 3 3113 SPOT4 5201 5204 5295 5177 4925 5052 4926 SPOT5 7571 7700 7560 7448 7388 7538 7332 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.396 0.394 0.413 0.404 0.399 0.393 0.398 SPOT2 0.416 0.404 0.391 0.415 0.436 0.009 0.412 SPOT4 0.434 0.400 0.402 0.412 0.409 0.439 0.438 SPOT5 0.366 0.361 0.356 0.355 0.354 0.359 0.371 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 1189 1404 1523 1417 1437 1220 1345 AMTB 465 519 528 505 419 422 449 ASDB 333 377 306 357 320 256 294 BEMB 1328 1606 1620 1626 1701 1368 1430 CADB 356 538 578 412 448 425 375 CHAB 627 672 708 707 683 461 0 CROB 296 363 384 320 332 251 289 EASB 452 483 401 440 540 366 426 EVEB 194 193 240 245 264 201 227 FAIB o 993 1006 1053 1093 1076 919 938 FUTB 411 468 390 447 417 374 452 GREB 397 546 539 494 452 393 471 HBKB 462 530 493 439 564 450 477 HEMB 361 309 364 423 408 264 378 JIUB 488 583 537 559 530 473 480 KESB 501 535 547 553 588 406 520 KIUB 528 626 630 641 623 515 553 KOLB 456 600 593 580 571 486 543 KRUB 323 380 523 366 368 306 350 LICB 401 445 486 432 348 377 448 MAHB 353 417 408 166 0 0 0 MALB 433 409 417 473 462 349 400 MANB o 356 436 434 451 393 399 417 MATB 405 443 451 510 481 372 437 METB 761 811 811 830 796 664 761 MIAB 390 438 508 417 402 361 372 MONB 544 558 535 512 569 446 513 MORB 344 589 445 475 541 329 455 MSPB 432 519 544 607 547 441 459 NOWB 332 321 415 329 291 377 360 PAQB 480 549 529 489 530 406 506 PDMB 468 462 485 573 441 318 518 REUB 312 382 358 373 314 315 320 REZB 671 604 652 740 591 622 741 RIPB 538 682 668 630 651 539 599 ROTB 1017 1139 1081 1102 1099 1030 1114 SALB 463 416 447 500 504 310 364 SANB 433 594 633 570 542 473 539 SCRB 410 527 452 475 524 384 426 SODB o 358 504 427 418 454 417 383 SPJB 1366 1477 1533 1503 1546 1173 1464 STJB 513 599 622 632 621 517 574 SYPB 1200 1249 1332 1397 1264 1153 1204 THUB 1257 1343 1243 1339 1323 1123 1158 TLHA 482 564 579 581 537 508 620 TRIB o 361 461 491 542 475 398 520 YASB 396 420 593 614 446 398 500 YELB 886 909 859 857 959 741 820 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 1230 1711 3136 AMTB 1306 462 647 1119 ASDB 811 371 432 812 BEMB 4293 1198 1845 3723 CADB 1126 448 786 970 CHAB 1344 731 927 1057 CROB 876 279 465 737 EASB 1116 602 915 827 EVEB 497 155 351 627 FAIB 2788 779 1216 2583 FUTB 1073 546 640 920 GREB 1341 361 610 1137 HBKB 1306 493 728 1082 HEMB 1074 387 454 801 JIUB 1396 543 852 1116 KESB 1374 511 790 1154 KIUB 1499 723 1035 1207 KOLB 1280 748 970 1070 KRUB 1054 307 598 885 LICB 1084 430 657 942 MAHB 503 194 311 446 MALB 1104 470 732 875 MANB 1139 412 565 982 MATB 1198 449 530 1104 METB 2212 662 872 1914 MIAB 1161 314 585 1016 MONB 1305 597 880 1074 MORB 1124 577 741 929 MSPB 1314 499 885 1046 NOWB 997 282 416 899 PAQB 1189 665 892 1006 PDMB 1329 445 641 1035 REUB 838 406 445 869 REZB 2096 364 783 1549 RIPB 1843 490 567 1580 ROTB 3407 402 938 3115 SALB 1179 462 687 933 SANB 1422 555 836 1196 SCRB 1207 475 772 968 SODB 1154 408 590 993 SPJB 3815 1425 1620 3507 STJB 1489 602 901 1274 SYPB 3531 1007 1514 3060 THUB 3172 1243 1747 2909 TLHA 1628 387 708 1314 TRIB 1142 539 812 952 YASB 1354 417 813 975 YELB 2629 629 893 2112 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 14.5 19.4 13.6 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -21.9 +- 1.8 mm TY = 18.4 +- 1.8 mm TZ = 30.5 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.7 +- 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 1.69 0.74 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr