****************************************************************************** dorisreport 10-Feb-2006 23:38:12 Message No 0502 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1355 = 05359 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1355 from 25-12-2005 to 31-12-2005 DORIS name (using day of start): 05359 Days of year: from 2005/359 to 2005/365 ============================================================== 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/ign05359wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05359wd04.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 1355 from 25-12-2005 to 31-12-2005 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.58 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 25-12-2005 19113 3 19110 0.0 26-12-2005 18423 6 18417 0.0 27-12-2005 23185 17 23168 0.1 28-12-2005 23817 11 23806 0.0 29-12-2005 23764 92 23672 0.4 30-12-2005 23509 10 23499 0.0 31-12-2005 22429 8 22421 0.0 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 6458 6482 6488 6450 6537 6543 5430 SPOT2 294 0 4676 4983 4886 4674 5023 SPOT4 5045 4874 4892 5122 4954 5082 4865 SPOT5 7313 7061 7112 7251 7295 7200 7103 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.374 0.393 0.398 0.397 0.395 0.385 0.381 SPOT2 0.396 0.000 0.450 0.419 0.419 0.402 0.414 SPOT4 0.410 0.409 0.408 0.395 0.408 0.412 0.409 SPOT5 0.348 0.347 0.349 0.334 0.345 0.340 0.340 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 1254 1266 1447 1482 1588 1437 1552 AMTB 400 411 406 512 461 486 473 ASDB 0 0 0 0 136 384 258 BEMB 1455 1465 1636 1831 1680 1695 1564 CHAB 523 580 648 710 683 626 723 CICB 426 385 425 434 447 417 467 CROB 350 240 325 296 338 363 312 EASB 329 336 471 497 507 524 359 EVEB 198 248 290 261 263 220 236 FAIB o 897 887 1093 1066 1053 981 1066 FUTB 334 299 353 473 424 408 429 HBKB 444 363 479 548 461 461 459 HEMB 253 307 376 368 316 364 354 JIUB 469 356 548 560 556 553 526 KESB 373 445 587 525 528 556 454 KIUB 502 405 636 654 594 657 529 KOLB 469 437 440 579 595 468 550 KRUB 244 290 279 269 338 236 363 LICB 390 306 453 359 456 449 421 MALB 375 313 524 520 518 509 401 MANB o 396 384 453 457 448 455 373 MATB 294 311 409 457 471 470 380 METB 602 629 699 801 736 750 712 MIAB 423 480 548 508 518 565 556 MONB 418 429 531 567 572 548 507 MORB 485 332 430 539 394 501 545 MSPB 498 421 549 513 481 577 420 NOWB 254 319 340 304 347 331 323 PAQB 466 405 431 549 555 294 118 PDMB 367 349 491 447 425 502 463 REUB 330 340 406 451 440 423 353 REZB 512 496 875 521 521 757 632 RIPB 594 629 623 753 640 693 660 ROTB 1136 1007 1344 1083 1167 1212 1136 SALB 293 362 478 462 423 478 370 SANB 523 446 470 546 550 572 542 SCRB 417 389 522 531 495 505 458 SODB o 402 368 404 447 487 240 365 SPJB 1341 1225 1549 1682 1655 1584 1618 STJB 520 526 674 676 675 682 662 SYPB 1150 1213 1278 1376 1416 1347 1235 THUB 1154 997 1236 1426 1342 1362 1259 TLHA 467 431 503 544 530 584 567 TRIB o 391 419 542 395 554 508 385 YASB 286 473 592 481 546 485 553 YELB 786 756 833 925 920 924 830 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 3774 1522 2044 2983 AMTB 1183 438 612 1122 ASDB 333 128 132 266 BEMB 4308 1599 2203 3749 CHAB 1599 677 1134 1320 CICB 1094 496 695 888 CROB 856 251 428 791 EASB 956 630 880 906 EVEB 483 254 360 690 FAIB 2767 858 1154 2538 FUTB 1120 435 371 951 HBKB 1277 409 757 955 HEMB 992 318 405 789 JIUB 1422 531 816 1031 KESB 1265 529 719 1142 KIUB 1296 732 1079 1172 KOLB 1314 596 823 1033 KRUB 892 283 514 535 LICB 1105 400 715 779 MALB 1059 602 844 876 MANB 1111 444 582 996 MATB 1021 363 516 1031 METB 2009 595 746 1785 MIAB 1248 600 862 1093 MONB 1287 553 836 1066 MORB 1153 627 693 966 MSPB 1374 589 637 1064 NOWB 869 168 404 977 PAQB 982 558 692 804 PDMB 1236 456 570 1004 REUB 892 515 632 910 REZB 1994 198 721 1595 RIPB 1694 710 858 1584 ROTB 3254 715 1432 3069 SALB 1098 476 650 872 SANB 1334 488 884 1194 SCRB 1171 512 834 941 SODB 1089 365 556 874 SPJB 3782 1712 2233 3462 STJB 1574 772 926 1355 SYPB 3484 1103 1586 3129 THUB 3284 1356 1779 2702 TLHA 1667 285 573 1295 TRIB 1121 523 733 1036 YASB 1237 588 775 1058 YELB 2555 609 911 2119 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 16.9 16.2 16.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -9.8 +- 1.9 mm TY = 3.7 +- 1.9 mm TZ = -22.6 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.7 +- 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 1.15 0.71 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr