****************************************************************************** dorisreport 14-Dec-2005 18:47:52 Message No 0446 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1347 = 05303 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1347 from 30-10-2005 to 05-11-2005 DORIS name (using day of start): 05303 Days of year: from 2005/303 to 2005/309 ============================================================== 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/ign05303wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05303wd04.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 1347 from 30-10-2005 to 05-11-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 3.66 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 30-10-2005 23693 14 23679 0.1 31-10-2005 23106 8 23098 0.0 01-11-2005 23425 20 23405 0.1 02-11-2005 23086 18 23068 0.1 03-11-2005 22848 16 22832 0.1 04-11-2005 22276 11 22265 0.0 05-11-2005 22502 14 22488 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 6500 6353 6489 6348 5961 6254 6296 SPOT2 4927 4840 4879 4894 4890 4631 4725 SPOT4 5286 4981 5049 4860 4848 4600 4745 SPOT5 6966 6924 6988 6966 7133 6780 6722 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.403 0.400 0.406 0.400 0.391 0.390 0.398 SPOT2 0.429 0.442 0.441 0.430 0.410 0.420 0.433 SPOT4 0.412 0.421 0.424 0.437 0.432 0.410 0.415 SPOT5 0.357 0.366 0.347 0.365 0.363 0.366 0.363 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 1494 1538 1489 1559 1391 1497 1443 ASDB 313 220 297 337 351 336 295 BEMB 1707 1568 1781 1671 1686 1632 1798 CADB 501 459 482 487 485 509 460 CHAB 0 0 0 80 133 133 114 CICB 478 434 523 465 441 481 476 CROB 338 314 273 364 343 406 373 DIOA o 544 278 0 0 0 0 0 EASB 446 516 500 424 493 460 467 EVEB 246 298 258 288 232 232 262 FAIB o 1060 1190 1033 1103 1011 1021 1061 FUTB 390 463 367 394 374 383 375 HBKB 464 532 459 457 518 540 392 HEMB 353 382 322 308 401 332 353 JIUB 452 507 497 463 438 286 403 KESB 559 560 524 481 532 481 532 KIUB 547 580 628 588 615 598 607 KOLB 572 526 530 554 483 546 521 KRUB 340 324 461 355 362 336 291 LIBB 90 68 82 0 0 231 398 MALB 507 498 478 476 468 453 514 MANB o 453 377 470 411 420 391 461 MATB 382 443 480 450 341 375 437 METB 764 714 768 748 708 762 727 MIAB 571 513 550 543 543 498 570 MORB 448 452 528 358 461 497 424 MSPB 490 557 537 435 546 575 527 NOWB 316 370 399 432 438 378 403 PAQB 516 496 585 538 499 525 491 PDMB 496 360 438 436 522 469 383 REUB 401 412 498 450 428 472 459 REZB 655 728 591 663 660 644 654 RIPB 640 567 757 596 659 663 654 ROTB 1265 1353 1054 1232 1224 1265 1182 SAKB 766 820 750 748 759 811 722 SALB 456 316 329 342 374 337 284 SANB 589 470 560 550 536 591 531 SCRB 426 491 470 475 483 516 320 SODB o 441 343 541 542 505 487 534 SPJB 1574 1639 1667 1543 1601 1532 1655 STJB 684 702 687 620 390 0 0 SYPB 1395 1319 1357 1359 1255 1345 1355 THUB 1351 1363 1387 1387 1417 1170 1181 TLHA 506 542 568 535 577 556 505 TRIB o 520 484 462 537 455 424 581 YASB 570 537 518 583 530 471 611 YELB 913 893 917 937 838 915 914 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 89 66 74 46 79 60 91 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 3746 1890 2048 3036 ASDB 807 312 435 771 BEMB 4431 1997 2207 4427 CADB 1128 776 727 989 CHAB 0 485 0 0 CICB 1134 717 719 924 CROB 888 479 404 753 DIOA 296 141 183 243 EASB 1049 783 824 1014 EVEB 518 303 416 651 FAIB 2833 1177 1157 2589 FUTB 1089 497 534 855 HBKB 1260 743 601 1164 HEMB 928 379 400 916 JIUB 1321 636 590 766 KESB 1387 703 709 1065 KIUB 1453 879 1011 1152 KOLB 1253 860 900 959 KRUB 1052 482 451 722 LIBB 214 386 146 177 MALB 1139 776 815 941 MANB 1162 500 641 902 MATB 1091 388 585 1027 METB 1985 733 862 1837 MIAB 1320 859 838 1046 MORB 1081 663 710 940 MSPB 1330 695 714 1118 NOWB 1245 354 433 887 PAQB 1233 854 872 948 PDMB 1246 575 584 928 REUB 1015 682 763 877 REZB 2023 626 428 1724 RIPB 1775 667 945 1381 ROTB 3414 1425 1236 2890 SAKB 1755 1220 1321 1377 SALB 920 543 467 763 SANB 1326 864 781 1090 SCRB 1083 687 741 844 SODB 1214 862 805 759 SPJB 3765 2219 2468 3348 STJB 1027 641 625 942 SYPB 3522 1466 1569 3126 THUB 3283 1785 1794 2836 TLHA 1583 597 546 1233 TRIB 1195 524 861 1079 YASB 1268 834 905 1047 YELB 2618 944 946 2038 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 0 509 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 19.5 19.7 15.6 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -4.5 +- 1.7 mm TY = 12.9 +- 1.7 mm TZ = -3.0 +- 1.6 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 0.94 0.29 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr