****************************************************************************** dorisreport 03-Mar-2006 21:13:56 Message No 0521 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1359 = 06022 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1359 from 22-01-2006 to 28-01-2006 DORIS name (using day of start): 06022 Days of year: from 2006/22 to 2006/28 ============================================================== 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/ign06022wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06022wd04.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 1359 from 22-01-2006 to 28-01-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.67 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 22-01-2006 23251 12 23239 0.1 23-01-2006 23251 4 23247 0.0 24-01-2006 22843 16 22827 0.1 25-01-2006 23303 10 23293 0.0 26-01-2006 21843 16 21827 0.1 27-01-2006 23873 7 23866 0.0 28-01-2006 23523 23 23500 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 6442 6745 6010 6366 6780 6611 6674 SPOT2 4704 4523 4679 4579 4894 4830 4696 SPOT4 4958 4743 4857 5077 5113 5098 4851 SPOT5 7135 7236 7281 7271 5040 7327 7279 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.402 0.403 0.397 0.399 0.387 0.391 0.409 SPOT2 0.432 0.427 0.417 0.421 0.431 0.427 0.411 SPOT4 0.421 0.430 0.438 0.411 0.424 0.403 0.418 SPOT5 0.361 0.362 0.364 0.366 0.366 0.359 0.359 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 1324 1403 1293 1319 1494 1313 1409 AMTB 451 498 496 484 537 488 453 ASDB 310 355 367 341 325 337 338 BEMB 1642 1714 1538 1507 1632 1644 1682 CADB 353 513 533 445 548 458 426 CHAB 738 717 702 695 719 695 706 CICB 432 526 439 471 511 429 453 CROB 388 319 302 397 329 315 350 EASB 511 475 479 530 408 481 520 EVEB 208 305 277 247 257 302 275 FAIB o 1078 1042 980 1009 1065 1047 1018 FUTB 425 433 436 430 426 409 415 GREB 99 106 104 299 563 547 461 HBKB 449 538 459 544 477 473 537 HEMB 397 341 342 363 336 371 398 JIUB 539 502 504 564 566 494 540 KESB 584 515 532 564 522 576 596 KIUB 647 629 633 672 628 626 625 KOLB 522 569 508 556 618 640 519 KRUB 361 457 433 272 436 419 357 LICB 434 307 423 390 502 462 389 MAHB 324 402 348 410 354 364 390 MALB 445 434 436 410 386 405 481 MANB o 421 480 246 166 261 347 371 MATB 396 453 419 434 446 445 484 METB 764 804 828 808 763 835 746 MIAB 474 446 458 451 482 473 437 MONB 559 534 566 589 530 529 581 MORB 472 513 372 528 528 423 486 MSPB 534 437 426 472 587 538 565 NOWB 361 381 315 359 386 365 325 PAQB 489 542 522 529 554 542 526 PDMB 443 433 445 494 498 509 517 REUB 356 391 386 382 392 339 319 REZB 804 692 597 696 692 714 671 RIPB 517 660 658 627 657 563 611 ROTB 1200 1036 1129 1155 1131 1208 1043 SALB 436 449 521 454 442 467 531 SANB 566 537 544 520 632 584 482 SODB o 450 448 232 449 448 434 401 SPJB 1475 1501 1452 1521 1509 1506 1514 SYPB 1344 1388 1297 1346 1345 1397 1288 THUB 1309 1298 1377 1358 1197 1246 1296 TLHA 595 578 467 541 589 593 562 TRIB o 544 520 536 449 429 541 450 YASB 546 539 561 439 529 643 524 YELB 823 883 923 899 888 859 863 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 3679 1609 1704 2832 AMTB 1294 648 579 1102 ASDB 833 387 472 835 BEMB 4235 1813 1909 3783 CADB 1176 729 771 818 CHAB 1669 1103 1137 1357 CICB 1144 730 692 927 CROB 883 393 451 794 EASB 1116 838 887 977 EVEB 518 359 444 627 FAIB 2767 1074 1171 2523 FUTB 1090 595 599 900 GREB 636 722 356 582 HBKB 1302 651 724 1017 HEMB 970 480 406 869 JIUB 1353 744 760 1096 KESB 1374 758 851 1136 KIUB 1506 1039 1018 1234 KOLB 1216 986 992 976 KRUB 975 557 596 788 LICB 987 583 635 859 MAHB 992 427 513 891 MALB 1070 624 712 868 MANB 1122 482 387 559 MATB 1077 517 544 1104 METB 2131 774 907 1939 MIAB 1227 537 741 915 MONB 1350 792 807 1124 MORB 1080 788 715 929 MSPB 1206 664 838 1054 NOWB 979 319 445 904 PAQB 1218 852 906 974 PDMB 1217 603 626 1086 REUB 902 498 478 860 REZB 2054 564 712 1706 RIPB 1797 577 563 1521 ROTB 3483 750 876 3079 SALB 1162 640 682 1034 SANB 1328 866 907 1020 SODB 1109 551 542 820 SPJB 3810 1773 1698 3495 SYPB 3563 1463 1535 3155 THUB 3300 1586 1672 2794 TLHA 1573 463 732 1323 TRIB 1120 767 790 1027 YASB 1283 809 925 999 YELB 2497 844 884 2135 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 14.7 19.3 14.6 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -9.3 +- 1.7 mm TY = 6.2 +- 1.7 mm TZ = -2.5 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.2 +- 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 1.44 0.75 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr