****************************************************************************** dorisreport 26-Jul-2006 18:57:46 Message No 0644 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1380 = 06169 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1380 from 18-06-2006 to 24-06-2006 DORIS name (using day of start): 06169 Days of year: from 2006/169 to 2006/175 ============================================================== 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/ign06169wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06169wd04.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 1380 from 18-06-2006 to 24-06-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.99 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 18-06-2006 22106 18 22088 0.1 19-06-2006 22167 48 22119 0.2 20-06-2006 21595 18 21577 0.1 21-06-2006 22108 28 22080 0.1 22-06-2006 22166 40 22126 0.2 23-06-2006 20989 5 20984 0.0 24-06-2006 20825 28 20797 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 6191 6229 5509 6083 6138 5164 4406 SPOT2 4434 4401 4269 4391 4558 4514 4560 SPOT4 4606 4498 4710 4750 4581 4483 4753 SPOT5 6857 6991 7089 6856 6849 6823 7078 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.430 0.411 0.407 0.389 0.408 0.415 0.413 SPOT2 0.514 0.495 0.464 0.457 0.438 0.438 0.445 SPOT4 0.432 0.420 0.447 0.419 0.413 0.419 0.421 SPOT5 0.367 0.366 0.369 0.375 0.378 0.361 0.374 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 1413 1418 1384 1476 1471 1232 1294 AMTB 468 430 435 525 424 497 388 ASDB 323 375 353 356 373 273 369 BEMB 1633 1686 1581 1613 1679 1508 1384 CHAB 656 725 633 697 711 630 673 CICB 253 426 394 460 459 428 365 CROB 374 394 386 374 346 340 295 DIOB 385 429 450 430 432 498 443 EASB 478 452 434 461 465 543 387 EVEB 225 217 184 190 243 151 153 FAIB o 962 1013 1040 1039 1061 817 901 FUTB 444 460 468 424 442 309 481 GAVB 225 269 241 253 234 224 228 GREB 528 426 491 520 498 543 379 HBKB 552 519 337 526 487 433 539 HEMB 301 344 365 344 321 319 357 JIUB 570 516 566 545 471 487 431 KESB 523 502 554 521 536 582 442 KIUB 620 586 534 600 566 507 530 KOLB 517 577 506 543 542 423 576 KRUB 423 528 475 473 431 478 400 LICB 467 496 432 396 354 334 451 MAHB 401 407 382 332 369 379 322 MALB 462 464 449 424 394 446 351 MANB o 450 410 466 477 401 450 387 MATB 456 431 471 373 474 462 405 METB 700 684 696 742 712 696 711 MIAB 433 469 480 435 494 443 333 MONB 537 535 567 545 512 536 492 MORB 517 364 464 542 436 467 432 MSPB 618 507 597 567 586 456 435 PAQB 538 560 533 533 510 487 554 PDMB 465 480 533 439 446 468 449 REUB 371 400 275 373 405 358 346 REZB 748 686 769 660 724 587 615 RIPB 558 614 605 598 547 661 529 ROTB 1178 1145 1216 1105 1055 1045 918 SALB 456 442 504 423 455 489 465 SANB 598 541 573 636 604 549 434 SCRB 483 503 479 509 495 437 439 SODB o 500 480 454 484 453 407 411 SPJB 1520 1457 1520 1438 1471 1455 1383 SYPB 1249 1341 1298 1398 1349 1219 1150 TLHA 573 512 610 523 562 432 457 TRIB o 504 471 476 456 614 424 458 YASB 456 558 560 515 617 567 413 YELB 0 0 0 0 0 64 704 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 3613 1626 1669 3078 AMTB 1116 580 548 1119 ASDB 846 455 503 774 BEMB 4124 1850 1850 3692 CHAB 1511 1058 1069 1325 CICB 902 599 625 857 CROB 958 487 480 702 DIOB 932 839 653 807 EASB 952 801 919 922 EVEB 376 335 213 506 FAIB 2449 994 1191 2515 FUTB 1071 564 637 966 GAVB 980 0 0 789 GREB 1273 616 545 1196 HBKB 1138 654 703 1075 HEMB 847 397 436 837 JIUB 1246 693 816 1125 KESB 1296 775 724 1066 KIUB 1266 968 963 1169 KOLB 1190 825 940 999 KRUB 1084 671 708 884 LICB 998 651 570 885 MAHB 888 415 580 895 MALB 927 686 698 891 MANB 1131 557 607 948 MATB 1087 493 598 1047 METB 1789 828 785 1759 MIAB 1090 576 624 981 MONB 1211 717 847 1137 MORB 1112 614 739 935 MSPB 1279 789 782 1084 PAQB 1221 873 862 1029 PDMB 1107 607 646 1129 REUB 888 448 459 910 REZB 1914 625 714 1732 RIPB 1759 497 551 1473 ROTB 3104 875 921 3007 SALB 1051 716 741 947 SANB 1251 886 861 1154 SCRB 1127 722 765 887 SODB 1123 588 614 1038 SPJB 3746 1620 1722 3489 SYPB 3238 1461 1487 3147 TLHA 1541 462 640 1232 TRIB 1042 824 789 942 YASB 1176 903 834 984 YELB 131 159 135 372 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 15.3 18.8 15.0 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -26.1 +- 2.1 mm TY = 22.3 +- 2.0 mm TZ = 48.2 +- 2.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.9 +- 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 1.39 0.67 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr