****************************************************************************** dorisreport 02-Aug-2006 21:56:44 Message No 0649 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1381 = 06176 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1381 from 25-06-2006 to 01-07-2006 DORIS name (using day of start): 06176 Days of year: from 2006/176 to 2006/182 ============================================================== 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/ign06176wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06176wd04.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 1381 from 25-06-2006 to 01-07-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.79 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 25-06-2006 23275 36 23239 0.2 26-06-2006 22841 3 22838 0.0 27-06-2006 21346 12 21334 0.1 28-06-2006 21662 6 21656 0.0 29-06-2006 22664 16 22648 0.1 30-06-2006 22445 27 22418 0.1 01-07-2006 23096 12 23084 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 6484 6378 6212 6561 6239 5973 6529 SPOT2 4591 4549 4494 4673 4499 4499 4572 SPOT4 4876 4827 3651 3379 4622 4785 4882 SPOT5 7288 7084 6977 7043 7288 7161 7101 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.419 0.410 0.400 0.409 0.398 0.438 0.415 SPOT2 0.457 0.455 0.446 0.433 0.438 0.438 0.420 SPOT4 0.408 0.409 0.397 0.398 0.433 0.423 0.427 SPOT5 0.374 0.365 0.367 0.370 0.369 0.377 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 1458 1471 1438 1519 1439 1326 1530 AMTB 503 525 452 480 464 479 536 ASDB 350 347 244 281 329 338 303 BEMB 1636 1545 1597 1570 1573 1489 1581 CHAB 698 681 664 664 691 699 738 CICB 503 447 416 473 419 482 517 CROB 388 374 371 337 355 414 363 DIOB 487 478 316 440 508 472 453 EASB 465 473 513 369 467 522 412 EVEB 174 179 182 104 180 37 102 FAIB o 984 1010 1032 974 1022 968 1012 FUTB 478 439 423 424 420 480 437 GAVB 269 264 164 214 230 204 265 GREB 487 476 543 581 439 515 534 HBKB 461 482 473 522 488 515 505 HEMB 329 383 411 323 320 356 338 JIUB 530 497 383 493 499 572 560 KESB 514 553 441 459 563 561 478 KIUB 612 551 541 537 574 576 554 KOLB 584 529 523 530 551 552 614 KRUB 431 514 416 470 468 434 508 LICB 438 379 394 354 479 389 439 MAHB 430 195 316 350 370 403 422 MALB 344 425 355 452 487 412 387 MANB o 491 463 456 454 436 455 415 MATB 484 381 365 388 444 437 464 METB 739 665 688 671 643 714 738 MIAB 482 476 374 353 476 424 466 MONB 521 547 537 459 539 576 518 MORB 497 433 459 484 364 474 504 MSPB 531 571 446 468 514 433 606 PAQB 536 486 464 455 524 526 546 PDMB 436 580 382 405 413 475 410 REUB 454 364 327 382 346 393 405 REZB 662 731 721 676 761 651 625 RIPB 746 620 531 597 619 648 699 ROTB 1012 1120 1198 1110 1154 1112 1066 SALB 395 547 405 414 505 439 362 SANB 612 615 523 551 603 594 613 SCRB 499 476 535 458 494 502 463 SODB o 483 417 411 391 396 475 504 SPJB 1501 1501 1373 1476 1408 1449 1547 SYPB 1378 1352 1363 1335 1267 1264 1348 TLHA 566 560 559 524 524 519 637 TRIB o 530 465 428 389 481 462 435 YASB 532 576 567 469 559 428 534 YELB 819 763 731 828 841 816 821 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 3833 1639 1935 3225 AMTB 1242 620 650 1120 ASDB 725 459 359 805 BEMB 4268 1767 1659 3735 CHAB 1660 1063 1054 1350 CICB 1202 701 659 890 CROB 945 517 426 829 DIOB 974 836 640 886 EASB 1061 884 732 910 EVEB 304 169 90 445 FAIB 2671 1065 1117 2454 FUTB 1129 652 565 943 GAVB 959 0 0 778 GREB 1340 570 749 1212 HBKB 1336 700 583 988 HEMB 983 436 391 815 JIUB 1278 810 748 1005 KESB 1324 713 551 1142 KIUB 1352 951 939 1086 KOLB 1337 867 930 1033 KRUB 1180 580 787 910 LICB 1079 651 504 805 MAHB 964 426 452 840 MALB 1112 600 681 787 MANB 1225 616 547 994 MATB 1205 435 416 1069 METB 1852 741 780 1738 MIAB 1125 540 479 1067 MONB 1293 777 742 1062 MORB 1037 734 695 966 MSPB 1270 753 660 1058 PAQB 1239 830 829 914 PDMB 1109 647 555 997 REUB 943 453 588 877 REZB 1971 574 739 1761 RIPB 1940 601 510 1578 ROTB 3300 758 979 3039 SALB 1082 687 579 921 SANB 1412 822 898 1211 SCRB 1170 738 763 940 SODB 1224 553 594 921 SPJB 3791 1684 1700 3468 SYPB 3441 1534 1624 3054 TLHA 1673 504 619 1278 TRIB 1132 737 575 979 YASB 1264 801 788 1053 YELB 1985 856 857 2129 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 12.9 17.6 12.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -28.3 +- 2.0 mm TY = 23.7 +- 1.9 mm TZ = 25.1 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.6 +- 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) ------------------------------------------------------------------ 0 0.50 0.50 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr