****************************************************************************** dorisreport 12-Jul-2006 19:57:24 Message No 0632 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1378 = 06155 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1378 from 04-06-2006 to 10-06-2006 DORIS name (using day of start): 06155 Days of year: from 2006/155 to 2006/161 ============================================================== 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/ign06155wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06155wd04.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 1378 from 04-06-2006 to 10-06-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.69 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 04-06-2006 22874 16 22858 0.1 05-06-2006 22545 16 22529 0.1 06-06-2006 22723 10 22713 0.0 07-06-2006 21945 15 21930 0.1 08-06-2006 20362 46 20316 0.2 09-06-2006 21516 26 21490 0.1 10-06-2006 21616 10 21606 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 6335 6196 6371 6148 5731 6024 6047 SPOT2 4512 4540 4676 4512 3543 4387 4143 SPOT4 4790 4763 4776 4596 4401 4458 4638 SPOT5 7221 7030 6890 6674 6641 6621 6778 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.394 0.431 0.419 0.406 0.460 0.429 0.409 SPOT2 0.419 0.401 0.417 0.416 0.423 0.481 0.449 SPOT4 0.418 0.418 0.404 0.413 0.439 0.424 0.410 SPOT5 0.362 0.371 0.370 0.367 0.384 0.379 0.365 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 1380 1477 1469 1407 1417 1399 1456 AMTB 504 491 486 443 449 436 494 ASDB 374 349 316 342 316 346 350 BEMB 1498 1604 1680 1667 1592 1627 1604 CADB 527 230 0 0 0 0 0 CHAB 677 700 739 688 715 691 692 CROB 383 378 294 352 349 375 357 DIOB 0 0 0 147 71 109 88 EASB 521 428 470 516 494 428 477 EVEB 237 195 253 306 234 211 246 FAIB o 994 1100 1050 1038 1081 966 1000 FUTB 485 419 410 406 377 465 389 GAVB 344 317 302 232 269 359 349 GREB 526 571 542 404 479 487 490 HEMB 422 356 353 425 326 328 362 JIUB 544 547 509 529 526 455 495 KESB 568 517 552 632 512 534 534 KIUB 560 546 615 559 544 614 600 KOLB 534 604 642 532 562 559 531 KRUB 426 489 486 494 419 479 534 LICB 426 437 378 377 397 447 436 MAHB 395 183 369 374 359 421 407 MALB 309 417 383 465 376 443 443 MANB o 470 439 495 454 388 489 448 MATB 436 431 502 537 462 461 476 METB 747 792 792 734 729 734 738 MIAB 408 425 473 428 375 433 479 MONB 553 563 512 531 544 534 501 MORB 469 550 443 481 475 451 466 MSPB 499 584 600 582 459 490 554 PAQB 529 548 537 505 530 546 490 PDMB 557 494 443 526 416 465 577 REUB 340 408 408 318 386 421 355 REZB 734 610 672 734 666 722 688 RIPB 675 689 660 662 622 670 618 ROTB 1132 1063 1028 1056 1087 1162 1167 SALB 502 464 409 574 489 407 513 SANB 597 617 601 535 575 574 632 SCRB 498 493 494 502 482 502 482 SODB o 437 476 383 387 451 485 424 SPJB 1494 1525 1471 1481 1469 1423 1498 STJB 548 549 492 231 0 0 0 SYPB 1347 1313 1457 1307 1294 1343 1317 TLHA 525 590 567 509 542 625 577 TRIB o 508 433 596 520 510 495 534 YASB 520 570 639 547 507 553 635 YELB 796 801 750 402 0 0 0 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- CICB 32 35 99 69 59 84 97 this is due to the lack of data or to some stations related problems as described below CICB 21 5 2006 18 6 2006 equipment problem, received on SPOT2 only 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3810 1603 1710 3184 AMTB 1190 625 634 1064 ASDB 876 439 466 805 BEMB 4348 1759 1827 3752 CADB 195 161 203 240 CHAB 1606 1053 1133 1359 CROB 959 402 459 794 DIOB 0 440 0 0 EASB 1137 835 864 881 EVEB 468 289 312 667 FAIB 2841 1030 1236 2436 FUTB 1122 660 575 853 GAVB 1307 0 0 1035 GREB 1362 508 677 1148 HEMB 1069 417 436 842 JIUB 1391 786 810 908 KESB 1470 654 723 1195 KIUB 1370 955 965 1148 KOLB 1277 864 1038 1040 KRUB 1146 626 707 984 LICB 1015 598 626 872 MAHB 893 368 534 865 MALB 1073 555 670 782 MANB 1154 578 693 992 MATB 1206 609 519 1129 METB 2023 698 883 1879 MIAB 1075 580 527 1061 MONB 1306 754 845 1035 MORB 1131 707 773 935 MSPB 1329 738 809 1083 PAQB 1215 848 942 971 PDMB 1277 613 679 1119 REUB 925 481 516 889 REZB 2179 544 672 1610 RIPB 1920 597 642 1604 ROTB 3290 728 821 3130 SALB 1248 724 689 952 SANB 1448 864 916 1150 SCRB 1204 713 760 944 SODB 1154 545 689 865 SPJB 3811 1590 1792 3487 STJB 638 494 443 372 SYPB 3485 1470 1604 3113 TLHA 1588 507 721 1283 TRIB 1218 836 746 1020 YASB 1393 715 1012 1074 YELB 946 410 438 1054 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- CICB 0 500 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 18.0 16.9 17.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -28.7 +- 2.0 mm TY = 23.6 +- 2.1 mm TZ = 47.4 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.8 +- 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 1.49 0.58 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr