****************************************************************************** dorisreport 03-Jan-2006 00:16:08 Message No 0459 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1349 = 05317 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1349 from 13-11-2005 to 19-11-2005 DORIS name (using day of start): 05317 Days of year: from 2005/317 to 2005/323 ============================================================== 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/ign05317wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05317wd04.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 1349 from 13-11-2005 to 19-11-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.37 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 13-11-2005 23680 25 23655 0.1 14-11-2005 22452 18 22434 0.1 15-11-2005 24260 30 24230 0.1 16-11-2005 23088 9 23079 0.0 17-11-2005 23632 17 23615 0.1 18-11-2005 23209 17 23192 0.1 19-11-2005 23047 16 23031 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 6198 5018 6609 6380 6561 6396 6340 SPOT2 5094 4734 4903 4759 4920 4765 4423 SPOT4 4998 5243 5236 4929 4912 4809 4974 SPOT5 7365 7439 7482 7011 7222 7222 7294 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.400 0.383 0.404 0.398 0.399 0.406 0.388 SPOT2 0.444 0.421 0.444 0.434 0.428 0.428 0.427 SPOT4 0.416 0.425 0.398 0.404 0.400 0.423 0.425 SPOT5 0.370 0.347 0.369 0.355 0.351 0.363 0.353 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 1454 1502 1446 1532 1586 1416 1403 ASDB 226 284 312 190 0 0 0 BEMB 1637 1519 1722 1644 1739 1678 1667 CADB 459 487 462 410 447 453 444 CHAB 710 577 592 693 660 731 605 CICB 434 408 465 458 479 458 486 CROB 380 306 332 310 321 310 346 DIOA o 493 493 495 422 457 454 427 EASB 480 369 477 516 459 473 465 EVEB 231 223 294 285 222 274 219 FAIB o 1061 922 1035 1036 1108 1014 1081 FUTB 461 331 342 358 430 396 387 HBKB 475 456 409 453 491 463 488 HEMB 365 299 384 420 350 296 370 JIUB 549 416 419 529 569 448 540 KESB 540 440 552 557 521 552 532 KIUB 586 531 596 604 602 593 548 KOLB 545 543 519 441 525 583 479 KRUB 296 348 400 334 251 315 274 LIBB 430 415 348 151 419 381 353 MALB 487 398 508 514 494 459 463 MANB o 416 409 440 425 475 460 454 MATB 392 383 414 404 483 403 434 METB 731 700 728 703 731 728 699 MIAB 496 481 587 491 544 542 499 MORB 462 413 440 505 542 454 455 MSPB 467 550 542 528 559 426 562 NOWB 286 457 345 301 372 360 400 PAQB 537 516 489 483 555 534 513 PDMB 397 471 493 523 431 452 528 REUB 476 391 415 442 480 422 366 REZB 725 667 639 504 625 546 708 RIPB 660 506 710 725 661 749 621 ROTB 1397 1199 1312 1121 1156 1138 1350 SAKB 713 664 696 884 708 0 0 SALB 354 373 399 511 389 363 383 SANB 448 464 578 476 582 564 553 SCRB 399 403 422 527 483 403 493 SODB o 557 446 499 489 577 550 405 SPJB 1519 1435 1648 1618 1630 1691 1585 STJB 602 586 659 622 658 704 631 SYPB 1354 1047 1392 774 466 1422 1250 THUB 1139 1090 1337 1432 1399 1311 1328 TLHA 489 549 521 444 542 470 582 TRIB o 402 437 585 467 492 564 448 YASB 488 492 591 546 504 570 554 YELB 975 701 879 922 920 918 882 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- KRAB 111 26 69 0 118 45 61 this is due to the lack of data or to some stations related problems as described below KRAB 31 7 2005 1 1 2010 equipment problem, insufficient power 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3710 1847 2015 3057 ASDB 314 219 193 383 BEMB 4112 1968 2353 3764 CADB 1047 677 750 882 CHAB 1667 784 985 1360 CICB 1104 689 748 896 CROB 858 402 390 765 DIOA 1059 658 661 1030 EASB 1079 816 875 830 EVEB 459 342 355 655 FAIB 2730 1226 1111 2465 FUTB 1101 573 406 835 HBKB 1245 579 636 969 HEMB 939 476 406 817 JIUB 1240 640 780 1025 KESB 1227 749 719 1189 KIUB 1275 907 1013 1195 KOLB 1281 659 820 1112 KRUB 876 474 443 635 LIBB 967 380 514 807 MALB 1089 723 867 910 MANB 1103 593 622 974 MATB 1013 373 575 1121 METB 1987 663 766 1826 MIAB 1143 832 832 1088 MORB 1053 712 791 911 MSPB 1224 781 706 1089 NOWB 1007 441 293 936 PAQB 1251 719 937 964 PDMB 1133 625 666 1067 REUB 891 680 686 919 REZB 2065 520 434 1620 RIPB 1678 693 927 1584 ROTB 3310 1481 1184 3112 SAKB 1140 848 897 980 SALB 998 655 547 799 SANB 1227 689 780 1192 SCRB 974 689 750 928 SODB 1088 811 885 976 SPJB 3727 2163 2298 3493 STJB 1456 937 1000 1278 SYPB 2811 1185 1368 2591 THUB 3185 1598 1634 3002 TLHA 1619 526 479 1136 TRIB 1071 749 747 1025 YASB 1213 818 804 1127 YELB 2460 876 954 2138 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 0 433 0 0 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 19.6 15.8 19.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -4.3 +- 1.7 mm TY = 7.9 +- 1.6 mm TZ = -27.0 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.9 +- 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 1.75 0.62 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr