****************************************************************************** dorisreport 22-Jun-2007 02:10:38 Message No 0915 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1428 = 07140 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1428 from 20-05-2007 to 26-05-2007 DORIS name (using day of start): 07140 Days of year: from 2007/140 to 2007/146 ============================================================== 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/ign07140wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07140wd04.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., Y.E. Bar-Sever, G. Tavernier (2005), DORIS as a potential part of a Global Geodetic Observing System, J. Geodyn., 40(4-5), 494-501, DOI: 10.1016/j.jog.2005.06.011 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. Week 1405 = 06344 : Use GIPSY/OASIS software installed at Institut de Physique du Globe de Paris 4) Global Statistics ==================== GPS week number 1428 from 20-05-2007 to 26-05-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.13 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 20-05-2007 23379 10 23369 0.0 21-05-2007 22405 2 22403 0.0 22-05-2007 23632 10 23622 0.0 23-05-2007 22458 4 22454 0.0 24-05-2007 23569 48 23521 0.2 25-05-2007 23830 6 23824 0.0 26-05-2007 24136 17 24119 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 6609 5589 6756 5464 6422 6805 6655 SPOT2 4265 4358 4382 4359 4105 4207 4631 SPOT4 5067 4943 4955 5006 5233 5213 5198 SPOT5 7428 7513 7529 7625 7761 7599 7635 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.420 0.417 0.417 0.398 0.425 0.425 0.432 SPOT2 0.458 0.441 0.430 0.434 0.418 0.423 0.428 SPOT4 0.437 0.439 0.463 0.433 0.428 0.433 0.431 SPOT5 0.371 0.379 0.375 0.373 0.389 0.384 0.381 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 1398 1411 1466 1335 1395 1495 1439 ARFB 375 324 467 408 408 416 401 ASDB 350 396 322 345 288 340 374 BEMB 1609 1545 1642 1568 1651 1720 1679 BETB 399 462 408 328 318 454 423 CADB 433 449 486 420 526 550 408 CHAB 628 724 706 623 690 734 650 CICB 0 0 246 404 497 500 452 CRPB 308 322 317 316 415 218 325 DIOB 402 368 476 497 467 432 423 DJIB 423 432 424 445 491 437 447 EASB 500 455 429 437 484 456 522 EVEB 273 278 294 260 230 241 326 FAIB o 1048 946 1001 809 1020 1023 995 FUTB 394 440 399 404 402 420 319 GAVB 251 215 228 244 236 245 239 GREB 544 475 509 444 553 526 504 HBMB 424 487 533 517 582 491 465 HEMB 413 357 325 432 373 317 418 JIUB 508 566 526 429 550 460 529 KETB 554 524 484 528 542 562 559 KIUB 586 588 610 501 566 604 582 KOLB 583 520 622 546 600 601 560 KRUB 481 441 432 394 405 426 475 LICB 305 425 455 420 368 409 471 MAHB 351 276 359 182 357 364 330 MALB 442 413 459 437 431 401 440 MANB o 405 438 471 346 431 510 432 MATB 545 484 516 515 434 546 488 METB 707 655 710 680 692 685 698 MIAB 301 347 439 453 443 463 447 MONB 550 572 545 455 570 505 552 MORB 411 523 463 380 507 452 420 MSPB 604 620 583 463 596 573 599 NOWB 301 271 381 264 342 315 357 PDMB 16 0 0 0 14 39 0 REUB 369 378 321 305 378 428 356 REZB 722 658 798 710 761 703 828 RIKB 525 405 432 410 453 415 461 RIPB 600 454 588 619 611 597 531 ROTB 1141 951 1100 978 1161 1142 1175 SALB 534 545 454 581 501 402 578 SANB 541 456 515 489 533 586 525 SCRB 519 497 466 427 525 429 442 SODB o 424 416 294 337 463 438 395 SPJB 1521 1384 1499 1400 1379 1454 1458 SYPB 1294 1189 1363 1231 1218 1357 1236 THUB 1452 1305 1366 1242 1363 1311 1354 TLHA 576 589 544 496 590 482 603 TRIB o 516 533 591 500 474 498 638 YASB 552 581 582 493 514 568 645 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 3805 1528 1765 3180 ARFB 1013 441 537 931 ASDB 864 415 513 851 BEMB 4403 1579 1772 4078 BETB 941 586 709 797 CADB 1020 667 742 979 CHAB 1552 934 1090 1360 CICB 1024 705 747 873 CRPB 847 374 393 771 DIOB 958 722 703 815 DJIB 1048 626 734 916 EASB 971 782 851 1080 EVEB 501 345 433 757 FAIB 2506 1011 1205 2529 FUTB 1111 493 483 956 GAVB 975 0 3 818 GREB 1316 574 625 1215 HBMB 1150 727 771 984 HEMB 1059 413 412 942 JIUB 1319 780 796 1102 KETB 1371 629 753 1158 KIUB 1319 890 1124 1218 KOLB 1213 921 1042 991 KRUB 1081 567 720 950 LICB 1062 593 610 903 MAHB 849 451 434 834 MALB 981 612 756 951 MANB 1038 573 634 934 MATB 1225 533 709 1206 METB 1826 700 829 1787 MIAB 1054 536 660 1026 MONB 1219 706 825 1148 MORB 1063 637 750 925 MSPB 1351 737 935 1205 NOWB 864 342 381 804 PDMB 5 111 0 9 REUB 823 495 502 863 REZB 2220 641 745 1890 RIKB 1079 562 669 1050 RIPB 1816 334 498 1540 ROTB 3017 850 1033 3056 SALB 1214 590 884 1058 SANB 1234 665 788 1097 SCRB 1106 605 740 976 SODB 947 540 605 914 SPJB 3601 1520 1734 3579 SYPB 3247 1260 1525 3153 THUB 3160 1603 1820 3159 TLHA 1614 429 852 1289 TRIB 1193 746 930 1120 YASB 1298 773 916 1123 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 14.6 16.2 19.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -25.2 +- 2.3 mm TY = 16.4 +- 2.3 mm TZ = 66.9 +- 2.1 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.9 +- 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 1.42 0.69 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr