****************************************************************************** dorisreport 10-Aug-2006 22:55:57 Message No 0651 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1382 = 06183 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1382 from 02-07-2006 to 08-07-2006 DORIS name (using day of start): 06183 Days of year: from 2006/183 to 2006/189 ============================================================== 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/ign06183wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06183wd04.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 1382 from 02-07-2006 to 08-07-2006 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.75 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 02-07-2006 22789 40 22749 0.2 03-07-2006 22536 17 22519 0.1 04-07-2006 21934 9 21925 0.0 05-07-2006 22107 23 22084 0.1 06-07-2006 22626 49 22577 0.2 07-07-2006 22197 14 22183 0.1 08-07-2006 21748 95 21653 0.4 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 6339 6226 6286 6159 6216 6010 6024 SPOT2 4576 4602 4302 4462 4509 4495 4404 SPOT4 4865 4609 4299 4610 4767 4774 4564 SPOT5 6969 7082 7038 6853 7085 6904 6661 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.437 0.420 0.403 0.423 0.424 0.404 0.443 SPOT2 0.433 0.439 0.451 0.460 0.439 0.429 0.454 SPOT4 0.422 0.421 0.406 0.422 0.478 0.432 0.434 SPOT5 0.378 0.373 0.360 0.374 0.378 0.361 0.387 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 1409 1391 1437 1409 1456 1423 1484 AMTB 487 428 479 468 458 491 458 ASDB 335 364 353 336 338 319 352 BEMB 1609 1577 1620 1644 1551 1210 839 CHAB 722 714 688 734 687 681 747 CICB 442 475 487 478 464 457 468 CROB 269 364 331 359 369 341 307 DIOB 437 478 441 484 425 443 457 DJIB 0 0 0 38 112 81 98 EASB 443 556 467 459 501 500 464 EVEB 108 0 0 0 123 166 235 FAIB o 1012 1040 1036 948 988 985 996 FUTB 419 449 417 437 431 434 409 GAVB 243 190 233 287 243 244 231 GREB 550 443 493 466 546 531 506 HBKB 404 528 500 488 526 486 495 HEMB 402 389 290 383 381 341 381 JIUB 455 544 506 411 507 481 507 KESB 564 623 529 548 556 510 564 KIUB 597 562 578 609 606 590 594 KOLB 592 515 575 574 511 590 544 KRUB 457 484 435 525 475 401 511 LICB 371 393 501 465 364 443 356 MAHB 157 349 389 326 383 393 410 MALB 389 468 453 432 443 462 334 MANB o 462 453 436 456 429 399 383 MATB 469 460 435 492 436 377 459 METB 727 677 704 661 700 712 723 MIAB 479 430 411 453 442 425 407 MONB 510 594 542 560 566 506 530 MORB 472 493 479 418 489 527 443 MSPB 600 554 521 468 586 605 495 PAQB 521 527 576 325 0 0 0 PDMB 496 485 400 492 578 462 463 REUB 387 326 405 384 317 367 382 REZB 668 699 591 714 796 726 599 RIPB 666 641 659 643 598 635 619 ROTB 1102 1086 1082 1155 1185 1139 1049 SALB 497 492 472 414 502 392 515 SANB 603 483 591 585 580 585 577 SCRB 470 515 517 483 514 531 498 SODB o 442 390 460 447 386 492 431 SPJB 1545 1480 1494 1452 1525 1403 1399 SYPB 1384 1328 1298 1315 1310 1356 1428 TLHA 557 486 0 0 596 584 452 TRIB o 577 481 493 541 450 487 578 YASB 627 496 471 500 581 530 597 YELB 784 814 749 822 721 768 775 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 3845 1615 1698 3143 AMTB 1166 604 634 1079 ASDB 840 459 472 818 BEMB 3817 1578 1621 3447 CHAB 1648 1116 1144 1316 CICB 1137 715 693 945 CROB 906 414 387 741 DIOB 946 788 801 830 DJIB 0 342 0 0 EASB 1066 855 855 973 EVEB 181 70 153 262 FAIB 2722 1053 1172 2381 FUTB 1073 628 592 896 GAVB 1001 0 0 782 GREB 1385 589 722 1107 HBKB 1264 688 639 1022 HEMB 980 421 432 911 JIUB 1233 698 687 1093 KESB 1388 724 781 1199 KIUB 1362 1010 967 1204 KOLB 1317 905 954 1000 KRUB 1135 703 683 937 LICB 1020 587 610 842 MAHB 949 365 480 807 MALB 1028 641 717 808 MANB 1072 621 590 928 MATB 1121 543 571 1056 METB 1860 712 839 1725 MIAB 1192 594 541 919 MONB 1302 804 801 1113 MORB 1112 665 825 913 MSPB 1302 753 833 1134 PAQB 658 430 483 504 PDMB 1230 630 603 1100 REUB 924 527 457 833 REZB 2074 682 548 1664 RIPB 1865 584 632 1539 ROTB 3338 830 839 3092 SALB 1198 668 675 976 SANB 1350 939 893 1061 SCRB 1137 823 758 981 SODB 1179 642 541 905 SPJB 3765 1666 1796 3396 SYPB 3582 1381 1601 3156 TLHA 1186 318 376 925 TRIB 1228 739 865 979 YASB 1298 762 931 1030 YELB 1868 743 907 2095 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 18.3 22.6 14.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -21.3 +- 1.9 mm TY = 26.9 +- 1.9 mm TZ = 49.8 +- 1.9 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 0.65 0.83 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr