****************************************************************************** dorisreport 26-Apr-2006 17:08:08 Message No 0570 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1367 = 06078 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1367 from 19-03-2006 to 25-03-2006 DORIS name (using day of start): 06078 Days of year: from 2006/78 to 2006/84 ============================================================== 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/ign06078wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06078wd04.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 1367 from 19-03-2006 to 25-03-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.54 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 19-03-2006 23653 54 23599 0.2 20-03-2006 23608 13 23595 0.1 21-03-2006 23209 28 23181 0.1 22-03-2006 23216 34 23182 0.1 23-03-2006 22925 13 22912 0.1 24-03-2006 23296 23 23273 0.1 25-03-2006 23472 31 23441 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 6541 6447 6578 6492 6414 6443 6503 SPOT2 4740 4801 4708 4386 4542 4500 4663 SPOT4 5069 5074 4790 4907 4571 4999 4995 SPOT5 7249 7273 7105 7397 7385 7331 7280 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.416 0.404 0.401 0.395 0.406 0.439 0.399 SPOT2 0.430 0.426 0.433 0.416 0.430 0.422 0.408 SPOT4 0.416 0.405 0.422 0.437 0.430 0.417 0.417 SPOT5 0.354 0.356 0.358 0.346 0.359 0.370 0.366 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 1463 1418 1485 1426 1346 1482 1440 AMTB 530 491 448 446 498 485 480 ASDB 347 318 391 353 342 273 348 BEMB 1583 1597 1665 1636 1639 1662 1719 CADB 435 450 504 488 485 567 434 CHAB 748 716 689 718 732 696 696 CROB 369 320 360 370 329 361 347 EASB 391 519 459 459 447 443 450 EVEB 276 238 301 275 230 238 295 FAIB o 1032 1032 1067 1069 1037 1012 1040 FUTB 368 438 397 405 467 424 403 GAVB 0 0 0 129 176 172 156 GREB 565 587 489 471 520 499 534 HBKB 438 486 554 529 487 521 453 HEMB 369 397 331 291 389 283 325 JIUB 476 559 560 515 573 563 514 KESB 591 541 569 572 543 454 556 KIUB 623 640 614 575 633 654 608 KOLB 592 566 592 582 518 552 594 KRUB 335 451 480 453 442 458 506 LICB 470 377 442 473 350 403 448 MAHB 361 356 419 382 369 426 382 MALB 385 256 0 0 0 0 0 MANB o 437 457 473 452 464 501 495 METB 813 818 733 784 776 773 790 MIAB 516 424 429 487 439 482 478 MONB 511 541 548 529 574 544 481 MORB 462 479 542 349 429 530 422 MSPB 532 579 594 494 476 619 528 NOWB 359 343 314 438 345 356 382 PAQB 469 490 494 490 512 553 539 PDMB 591 577 476 470 617 503 505 REUB 318 392 361 387 376 387 357 REZB 659 680 625 720 659 673 707 RIPB 648 637 660 622 664 632 562 ROTB 1157 1084 1080 1117 1101 1144 1174 SANB 543 529 561 581 544 560 610 SCRB 434 450 474 487 372 380 359 SODB o 447 427 444 466 436 479 369 SPJB 1515 1520 1414 1447 1518 1477 1379 SYPB 1314 1392 1337 1326 1322 1258 1461 THUB 1301 1384 1277 1332 1310 1232 1341 TLHA 587 587 553 554 621 611 594 TRIB o 560 524 452 543 486 428 542 YASB 604 596 396 588 551 483 591 YELB 881 875 931 883 878 902 869 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- MATB 368 491 487 404 499 454 475 this is due to the lack of data or to some stations related problems as described below MATB 8 11 2005 1 1 2010 antenna fall 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3838 1612 1697 3210 AMTB 1240 638 641 1089 ASDB 928 453 506 690 BEMB 4407 1816 1858 3849 CADB 1118 722 825 885 CHAB 1642 1098 1150 1359 CROB 904 464 412 782 EASB 1021 741 852 931 EVEB 519 345 397 670 FAIB 2810 1043 1206 2538 FUTB 1094 616 605 810 GAVB 0 0 0 670 GREB 1386 587 682 1219 HBKB 1287 684 675 995 HEMB 920 373 436 839 JIUB 1337 872 787 1016 KESB 1400 674 774 1186 KIUB 1488 1026 1046 1114 KOLB 1318 878 1076 992 KRUB 1104 677 638 891 LICB 1012 636 623 917 MAHB 1059 417 602 836 MALB 221 119 136 198 MANB 1221 611 698 960 METB 2208 711 914 1861 MIAB 1206 609 610 1027 MONB 1271 844 772 1045 MORB 1108 659 757 898 MSPB 1297 731 881 1135 NOWB 1068 416 358 838 PAQB 1131 831 940 916 PDMB 1296 766 744 1155 REUB 891 518 501 848 REZB 1998 627 578 1691 RIPB 1795 562 674 1555 ROTB 3411 808 785 3127 SANB 1294 879 915 1089 SCRB 1012 686 652 837 SODB 1159 626 626 867 SPJB 3720 1617 1846 3394 SYPB 3602 1457 1572 3070 THUB 3285 1648 1730 2799 TLHA 1651 535 776 1324 TRIB 1202 697 808 1061 YASB 1251 783 920 1078 YELB 2643 839 905 2054 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- MATB 1108 513 595 1125 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 15.5 19.3 15.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -22.5 +- 2.1 mm TY = 22.6 +- 1.9 mm TZ = 65.9 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.3 +- 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 1.47 0.93 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr