****************************************************************************** dorisreport 12-Dec-2006 22:48:27 Message No 0749 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1399 = 06302 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1399 from 29-10-2006 to 04-11-2006 DORIS name (using day of start): 06302 Days of year: from 2006/302 to 2006/308 ============================================================== 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/ign06302wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06302wd04.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 1399 from 29-10-2006 to 04-11-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.95 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 29-10-2006 20905 8 20897 0.0 30-10-2006 21121 21 21100 0.1 31-10-2006 21346 19 21327 0.1 01-11-2006 21367 24 21343 0.1 02-11-2006 21925 15 21910 0.1 03-11-2006 21749 58 21691 0.3 04-11-2006 21698 14 21684 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 5437 5584 5953 6101 6192 6084 6100 SPOT2 4290 4353 4313 4108 4262 4324 4185 SPOT4 4658 4461 4471 4575 4577 4711 4619 SPOT5 6512 6702 6590 6559 6879 6572 6780 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.390 0.392 0.416 0.404 0.404 0.402 0.402 SPOT2 0.408 0.414 0.415 0.403 0.423 0.425 0.432 SPOT4 0.415 0.412 0.400 0.410 0.425 0.408 0.406 SPOT5 0.341 0.353 0.366 0.359 0.367 0.356 0.357 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 1423 1436 1387 1406 1471 1466 1427 AMTB 529 510 534 525 502 587 554 ARFB 414 356 411 376 370 370 372 ASDB 270 396 333 362 384 262 300 CADB 421 382 384 370 410 369 400 CHAB 509 576 517 535 531 535 501 CICB 502 516 430 489 421 465 446 CROB 464 380 372 455 499 416 494 DIOB 405 474 478 415 444 443 416 DJIB 388 392 434 426 428 325 384 EVEB 224 241 300 256 263 276 275 FAIB o 946 1033 997 1121 1040 1047 1081 FUTB 327 416 382 459 408 368 366 GAVB 242 221 241 177 244 252 222 GREB 534 534 533 508 510 551 540 HEMB 341 381 400 399 313 358 365 JIUB 0 0 0 0 283 473 572 KIUB 635 573 567 605 636 558 559 KOLB 510 599 553 521 659 582 542 KRUB 355 304 256 409 335 379 338 LICB 412 387 394 431 384 387 435 MAHB 362 333 181 354 432 340 347 MALB 436 407 450 461 359 436 449 MATB 474 564 506 592 541 512 532 METB 717 709 727 730 748 722 702 MIAB 435 467 389 398 464 499 427 MONB 571 435 535 605 529 556 532 MORB 344 323 371 427 448 394 459 NOWB 238 414 396 351 451 376 465 PAQB 464 440 392 390 425 424 439 PDMB 418 449 524 476 423 416 482 REUB 418 405 364 401 440 427 376 REZB 684 701 653 602 704 716 791 RIPB 691 649 701 703 738 729 671 ROTB 1444 1354 1426 1413 1397 1384 1413 SALB 0 0 61 34 114 95 53 SANB 538 512 488 454 521 568 434 SCRB 490 493 407 454 455 436 505 SPJB 1407 1387 1514 1535 1520 1444 1431 STJB 578 473 666 597 538 608 605 SYPB 1452 1429 1471 1496 1476 1505 1422 THUB 1251 1180 1337 1294 1377 1203 1351 TLHA 533 536 494 493 575 566 613 TRIB o 396 501 579 401 458 243 109 YASB 559 609 561 516 459 590 577 YELB 865 787 864 911 905 871 858 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 3734 1611 1744 3227 AMTB 1366 589 852 1193 ARFB 1005 456 511 846 ASDB 792 419 514 761 CADB 900 607 589 836 CHAB 1030 687 914 1184 CICB 1157 702 771 879 CROB 1247 458 552 1001 DIOB 915 763 732 815 DJIB 1115 667 611 634 EVEB 485 342 414 681 FAIB 2743 1108 1178 2532 FUTB 1006 543 561 822 GAVB 871 0 0 815 GREB 1373 663 673 1179 HEMB 994 388 455 891 JIUB 451 287 331 350 KIUB 1314 1013 1001 1133 KOLB 1251 957 1037 943 KRUB 920 512 511 627 LICB 987 617 579 838 MAHB 949 420 391 772 MALB 936 676 688 896 MATB 1307 586 796 1230 METB 1865 817 822 1759 MIAB 1175 524 607 1020 MONB 1274 791 786 1103 MORB 1125 608 588 734 NOWB 1115 271 594 893 PAQB 1153 527 565 920 PDMB 1108 570 758 986 REUB 1043 631 505 854 REZB 2014 577 710 1733 RIPB 2155 628 574 1713 ROTB 3830 1479 1628 3191 SALB 0 374 0 0 SANB 1221 690 735 1082 SCRB 1144 637 683 920 SPJB 3733 1639 1815 3324 STJB 1388 734 812 1348 SYPB 3740 1656 1899 3272 THUB 3151 1679 1657 2791 TLHA 1686 464 586 1260 TRIB 953 513 606 868 YASB 1312 814 919 1072 YELB 2538 834 859 2055 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 15.4 15.9 17.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -23.0 +- 2.1 mm TY = 9.5 +- 2.2 mm TZ = 26.5 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.3 +- 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) 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