****************************************************************************** dorisreport 04-May-2006 14:50:18 Message No 0575 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1368 = 06085 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1368 from 26-03-2006 to 01-04-2006 DORIS name (using day of start): 06085 Days of year: from 2006/85 to 2006/91 ============================================================== 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/ign06085wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06085wd04.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 1368 from 26-03-2006 to 01-04-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.90 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 26-03-2006 22944 60 22884 0.3 27-03-2006 20789 52 20737 0.3 28-03-2006 16553 23 16530 0.1 29-03-2006 23355 17 23338 0.1 30-03-2006 22917 22 22895 0.1 31-03-2006 21712 12 21700 0.1 01-04-2006 23724 75 23649 0.3 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 6421 5824 2919 6421 6305 5128 6610 SPOT2 4622 2957 1554 4509 4646 4783 4679 SPOT4 4696 4788 4756 5020 4865 4771 5026 SPOT5 7145 7168 7301 7388 7079 7018 7334 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.408 0.394 0.373 0.400 0.400 0.392 0.413 SPOT2 0.417 0.422 0.402 0.426 0.417 0.418 0.400 SPOT4 0.405 0.409 0.400 0.425 0.440 0.426 0.416 SPOT5 0.353 0.358 0.358 0.353 0.356 0.359 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 1437 1331 1237 1365 1442 1510 1336 AMTB 475 493 370 496 460 452 486 ASDB 410 309 181 334 220 344 336 BEMB 1631 1598 1204 1632 1639 1593 1615 CADB 441 477 456 551 522 537 442 CHAB 709 600 607 687 690 730 676 CROB 296 299 211 330 356 320 314 EASB 503 411 343 495 484 428 499 EVEB 314 189 149 241 254 313 275 FAIB o 1009 909 804 1026 1043 1028 932 FUTB 402 440 367 415 331 439 382 GAVB 109 106 214 356 294 297 304 GREB 542 533 411 486 574 506 520 HBKB 333 0 0 0 0 0 0 HEMB 453 313 183 382 372 326 353 JIUB 535 570 335 579 529 490 500 KESB 514 413 402 541 561 550 563 KIUB 631 543 530 623 601 582 635 KOLB 514 515 548 570 591 601 478 KRUB 431 351 348 458 449 491 453 LICB 309 372 284 297 303 360 341 MAHB 354 294 256 337 412 387 362 MALB 0 0 0 185 334 428 425 MANB o 437 455 363 390 349 465 432 METB 760 717 636 785 769 751 775 MIAB 389 386 372 497 394 484 446 MONB 552 459 427 542 477 538 540 MORB 454 503 301 484 539 455 442 MSPB 550 491 343 551 532 535 555 NOWB 304 333 343 379 283 392 347 PAQB 501 482 452 513 497 475 457 PDMB 594 473 350 633 493 474 572 REUB 345 297 356 314 355 392 337 REZB 685 607 505 767 707 614 708 RIPB 604 602 581 656 571 605 525 ROTB 1065 1055 694 1069 1203 1095 1208 SANB 495 550 439 598 614 591 601 SCRB 504 365 328 339 431 522 457 SODB o 389 390 357 400 477 433 431 SPJB 1527 1401 1174 1477 1482 1412 1531 STJB 0 0 0 0 0 11 703 SYPB 1339 1185 1071 1350 1414 1388 1311 THUB 1382 1258 1087 1316 1419 1264 1268 TLHA 510 530 405 600 510 554 562 TRIB o 507 474 358 516 495 469 594 YASB 566 525 397 591 499 621 580 YELB 889 798 787 883 907 896 882 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 484 395 425 481 371 430 473 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 3742 1392 1757 3102 AMTB 1163 544 629 1104 ASDB 786 372 508 647 BEMB 4169 1607 1863 3742 CADB 1162 654 801 1009 CHAB 1522 965 1168 1303 CROB 816 308 439 695 EASB 1023 694 913 890 EVEB 456 342 372 642 FAIB 2523 911 1160 2449 FUTB 1057 512 643 822 GAVB 795 0 0 992 GREB 1294 580 731 1149 HBKB 106 87 50 118 HEMB 888 366 415 890 JIUB 1259 638 775 1105 KESB 1273 630 718 1128 KIUB 1382 875 1024 1230 KOLB 1290 818 946 996 KRUB 1018 542 691 908 LICB 917 407 415 765 MAHB 898 415 510 783 MALB 483 253 332 443 MANB 1124 533 679 784 METB 1997 685 908 1823 MIAB 1091 559 542 943 MONB 1194 659 814 1078 MORB 1068 556 805 953 MSPB 1332 624 745 1067 NOWB 914 391 434 771 PAQB 1036 743 882 985 PDMB 1303 625 788 1110 REUB 809 408 471 871 REZB 2147 480 583 1576 RIPB 1803 450 566 1482 ROTB 3090 671 798 3099 SANB 1369 811 815 1130 SCRB 1094 516 714 875 SODB 1043 525 565 948 SPJB 3679 1432 1848 3385 STJB 264 106 144 227 SYPB 3294 1314 1602 3148 THUB 3153 1434 1615 3100 TLHA 1509 466 696 1129 TRIB 1099 632 915 973 YASB 1321 794 866 1029 YELB 2540 681 925 2131 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- MATB 1096 499 606 1045 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 19.3 19.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -18.4 +- 2.0 mm TY = 24.4 +- 1.9 mm TZ = 58.0 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.9 +- 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 1.38 0.37 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr