****************************************************************************** dorisreport 08-Jun-2007 02:52:29 Message No 0905 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1426 = 07126 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1426 from 06-05-2007 to 12-05-2007 DORIS name (using day of start): 07126 Days of year: from 2007/126 to 2007/132 ============================================================== 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/ign07126wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07126wd04.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 1426 from 06-05-2007 to 12-05-2007 Total number of stations = 50 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.96 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 06-05-2007 23673 5 23668 0.0 07-05-2007 23387 1 23386 0.0 08-05-2007 23193 2 23191 0.0 09-05-2007 23232 11 23221 0.0 10-05-2007 23493 4 23489 0.0 11-05-2007 23642 3 23639 0.0 12-05-2007 24038 27 24011 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 6752 6621 6501 6748 6117 6602 6952 SPOT2 4584 4382 4166 4091 4522 4363 4367 SPOT4 4927 4884 4965 5090 5235 5046 5078 SPOT5 7405 7499 7559 7292 7615 7628 7614 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.391 0.393 0.419 0.425 0.418 0.414 0.411 SPOT2 0.417 0.417 0.425 0.424 0.422 0.431 0.454 SPOT4 0.431 0.436 0.410 0.421 0.417 0.425 0.428 SPOT5 0.376 0.364 0.381 0.378 0.385 0.366 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 1447 1379 1405 1532 1396 1405 1500 ARFB 457 424 456 449 393 343 436 ASDB 330 376 338 303 340 333 364 BEMB 1714 1668 1637 1662 1587 1709 1639 BETB 455 415 446 453 401 394 459 CADB 534 475 521 566 504 458 503 CHAB 702 717 759 729 676 749 738 CRPB 343 415 316 323 232 312 309 DIOB 535 458 476 427 475 489 440 DJIB 479 429 489 442 408 481 487 EASB 474 501 421 399 448 532 452 EVEB 307 245 227 268 293 271 271 FAIB o 1013 997 1070 1010 1000 1060 1061 FUTB 422 404 383 412 357 404 438 GAVB 220 223 205 196 243 191 232 GREB 502 477 564 510 492 523 547 HBMB 491 510 477 499 433 521 506 HEMB 337 389 325 314 400 375 283 JIUB 0 0 0 335 510 527 558 KETB 416 431 403 369 493 621 516 KIUB 632 575 623 642 528 608 633 KOLB 587 540 594 634 593 527 583 LICB 378 451 393 433 434 364 468 MAHB 365 336 367 269 295 385 188 MALB 478 461 324 419 411 477 481 MANB o 435 477 468 467 440 477 487 MATB 517 551 528 490 517 550 522 METB 743 685 757 705 708 697 675 MIAB 454 455 444 500 505 425 431 MONB 547 578 610 522 459 584 588 MORB 470 433 529 474 422 448 447 MSPB 611 480 507 626 592 570 528 NOWB 300 300 293 341 213 254 353 PDMB 0 12 0 12 21 0 16 REUB 406 376 428 408 280 411 419 REZB 728 766 675 712 780 689 681 RIKB 420 468 404 318 490 512 435 RIPB 694 675 731 631 571 640 651 ROTB 1013 1065 997 722 1108 1079 1029 SALB 516 593 449 375 483 529 464 SANB 508 497 545 589 518 496 489 SCRB 469 495 488 435 458 471 502 SODB o 441 431 492 462 314 422 470 SPJB 1431 1498 1577 1502 1477 1447 1481 SYPB 1349 1278 1270 1291 1242 1266 1345 THUB 1303 1368 1367 1300 1382 1366 1440 TLHA 535 484 571 589 561 532 563 TRIB o 551 584 477 440 632 492 539 YASB 595 551 474 610 657 535 480 YELB 929 884 926 891 817 890 899 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 3900 1598 1677 3177 ARFB 1123 436 550 971 ASDB 791 446 526 850 BEMB 4633 1603 1930 3970 BETB 1012 660 687 861 CADB 1200 727 814 951 CHAB 1638 1025 1208 1361 CRPB 872 211 260 1108 DIOB 911 819 827 897 DJIB 1102 626 774 953 EASB 1031 760 885 1038 EVEB 536 365 444 724 FAIB 2759 1000 1198 2601 FUTB 1073 464 572 1001 GAVB 899 2 4 756 GREB 1413 538 656 1247 HBMB 1201 651 688 1049 HEMB 992 407 443 834 JIUB 889 678 660 1011 KETB 1403 727 815 414 KIUB 1331 1024 1089 1263 KOLB 1334 922 993 1041 LICB 1038 527 687 893 MAHB 864 346 437 836 MALB 1011 615 743 920 MANB 1240 579 615 999 MATB 1221 691 747 1177 METB 1908 719 826 1755 MIAB 1126 613 638 990 MONB 1217 752 859 1163 MORB 1055 708 757 949 MSPB 1396 685 843 1155 NOWB 887 294 308 793 PDMB 5 103 0 1 REUB 916 468 577 942 REZB 2259 513 664 1899 RIKB 1162 602 659 932 RIPB 1945 533 705 1564 ROTB 2970 725 705 2902 SALB 1106 586 936 1031 SANB 1281 709 676 1124 SCRB 1130 587 730 970 SODB 1152 573 616 986 SPJB 3758 1574 1803 3593 SYPB 3328 1330 1532 3145 THUB 3243 1543 1880 3169 TLHA 1696 411 667 1295 TRIB 1182 836 950 1035 YASB 1354 781 915 1049 YELB 2521 883 932 2178 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 15.2 18.4 18.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -25.0 +- 2.4 mm TY = 19.1 +- 2.4 mm TZ = 62.0 +- 2.2 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.1 +- 0.4 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 1.30 0.62 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr