****************************************************************************** dorisreport 30-Jun-2006 00:11:41 Message No 0623 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1376 = 06141 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1376 from 21-05-2006 to 27-05-2006 DORIS name (using day of start): 06141 Days of year: from 2006/141 to 2006/147 ============================================================== 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/ign06141wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06141wd04.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 1376 from 21-05-2006 to 27-05-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.68 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 21-05-2006 20976 10 20966 0.0 22-05-2006 20986 10 20976 0.0 23-05-2006 20914 59 20855 0.3 24-05-2006 22382 46 22336 0.2 25-05-2006 22971 16 22955 0.1 26-05-2006 22606 15 22591 0.1 27-05-2006 22559 18 22541 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 5997 5952 5809 6325 6389 6231 6456 SPOT2 4163 4170 4207 4434 4441 4538 4485 SPOT4 4409 4330 4352 4651 4868 4843 4618 SPOT5 6397 6524 6487 6926 7257 6979 6982 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.407 0.401 0.422 0.411 0.402 0.411 0.384 SPOT2 0.424 0.429 0.438 0.458 0.444 0.413 0.404 SPOT4 0.416 0.427 0.427 0.425 0.413 0.460 0.422 SPOT5 0.367 0.373 0.366 0.381 0.368 0.350 0.364 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 1501 1432 1390 1438 1398 1464 1520 AMTB 461 443 474 428 506 523 449 ASDB 279 365 252 340 389 299 225 BEMB 1639 1534 1656 1675 1619 1625 1694 CADB 557 469 432 576 567 511 538 CHAB 693 693 687 705 656 716 690 CROB 322 350 375 355 351 356 328 EASB 431 500 475 473 492 515 467 EVEB 265 306 239 264 253 201 305 FAIB o 1016 1027 997 1029 1027 1051 1024 FUTB 283 396 438 462 444 377 388 GAVB 353 235 265 345 355 289 303 GREB 534 464 489 418 509 582 535 HEMB 327 409 295 301 366 398 358 JIUB 520 473 505 470 488 515 392 KESB 551 584 560 471 524 556 514 KIUB 558 605 573 584 592 581 551 KOLB 608 539 510 603 549 526 594 KRUB 498 486 425 372 493 395 413 LICB 406 377 333 398 362 366 212 MAHB 159 343 378 390 379 363 178 MALB 469 446 454 469 452 476 425 MANB o 499 435 478 454 474 507 430 MATB 448 438 461 446 418 380 473 METB 794 723 762 754 758 751 723 MIAB 440 440 424 436 487 427 406 MONB 497 544 531 557 545 566 496 MORB 460 453 455 392 436 436 451 MSPB 531 605 586 543 540 530 609 PAQB 0 0 0 550 404 502 498 PDMB 453 459 494 438 529 502 447 REUB 395 287 392 420 247 386 403 REZB 723 727 727 676 765 680 740 RIPB 584 594 555 648 624 579 607 ROTB 1164 1101 1152 1146 1192 1167 1087 SALB 400 542 444 372 508 448 439 SANB 647 571 596 594 634 564 546 SCRB 512 520 501 515 483 488 506 SODB o 471 395 478 490 434 466 491 SPJB 0 0 166 809 1382 1521 1499 STJB 581 652 651 559 621 592 592 SYPB 1400 1318 1364 1311 1323 1353 1364 TLHA 522 568 526 572 591 594 569 TRIB o 504 554 510 484 561 435 529 YASB 534 637 532 567 601 562 555 YELB 769 745 837 846 768 779 814 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 0 0 46 86 32 0 26 this is due to the lack of data or to some stations related problems as described below CICB 21 5 2006 1 1 2010 equipment problem, received on SPOT2 only 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3896 1657 1749 3146 AMTB 1241 596 564 1093 ASDB 775 402 452 691 BEMB 4526 1830 1773 3753 CADB 1295 824 745 975 CHAB 1660 1105 1077 1259 CROB 907 481 468 718 EASB 1073 846 849 969 EVEB 514 345 415 625 FAIB 2797 1032 1179 2450 FUTB 1017 509 549 902 GAVB 1295 0 0 1009 GREB 1314 618 588 1206 HEMB 984 371 348 926 JIUB 1315 661 708 990 KESB 1381 702 764 1103 KIUB 1400 914 1060 1064 KOLB 1328 911 1004 953 KRUB 1016 718 654 865 LICB 930 478 504 700 MAHB 813 317 476 771 MALB 1110 697 746 882 MANB 1288 575 773 891 MATB 1121 476 634 1008 METB 2026 739 889 1812 MIAB 1007 577 652 1001 MONB 1276 789 738 1126 MORB 1040 589 758 907 MSPB 1343 776 892 1131 PAQB 696 448 466 492 PDMB 1161 641 643 1068 REUB 976 521 427 786 REZB 2104 712 680 1751 RIPB 1962 437 482 1483 ROTB 3386 915 968 3026 SALB 1140 631 659 958 SANB 1407 990 889 1105 SCRB 1170 798 824 919 SODB 1219 653 626 951 SPJB 1951 831 909 1835 STJB 1502 868 744 1346 SYPB 3493 1464 1566 3220 TLHA 1680 478 799 1165 TRIB 1165 715 893 1036 YASB 1290 876 985 1069 YELB 1917 863 893 2070 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- CICB 0 198 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 15.2 16.3 13.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -36.5 +- 1.9 mm TY = 22.8 +- 1.9 mm TZ = 42.7 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.1 +- 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 1.41 0.47 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr