****************************************************************************** dorisreport 20-Dec-2006 23:17:07 Message No 0755 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1401 = 06316 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1401 from 12-11-2006 to 18-11-2006 DORIS name (using day of start): 06316 Days of year: from 2006/316 to 2006/322 ============================================================== 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/ign06316wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06316wd04.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 1401 from 12-11-2006 to 18-11-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.17 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 12-11-2006 21538 5 21533 0.0 13-11-2006 21089 7 21082 0.0 14-11-2006 20804 3 20801 0.0 15-11-2006 20549 7 20542 0.0 16-11-2006 22761 8 22753 0.0 17-11-2006 22720 2 22718 0.0 18-11-2006 22699 1 22698 0.0 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 6034 5812 5710 5410 6236 6179 6336 SPOT2 4137 3906 4068 4283 4513 4431 4287 SPOT4 4562 4516 4599 4364 4861 4978 4910 SPOT5 6800 6848 6424 6485 7143 7130 7165 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.397 0.395 0.396 0.391 0.390 0.393 0.398 SPOT2 0.470 0.476 0.417 0.424 0.422 0.410 0.412 SPOT4 0.403 0.415 0.426 0.414 0.422 0.405 0.409 SPOT5 0.354 0.352 0.364 0.358 0.362 0.368 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 1460 1441 1435 1499 1431 1418 1495 AMTB 562 552 574 578 607 566 585 ARFB 444 425 393 390 428 445 430 ASDB 316 314 25 0 0 0 0 CADB 543 413 409 483 432 467 480 CHAB 553 512 499 547 537 539 515 CICB 508 443 522 526 442 472 544 CROB 477 465 462 444 495 466 462 DIOB 456 462 457 476 497 442 450 DJIB 451 413 476 482 490 496 517 EVEB 245 264 258 303 251 225 252 FAIB o 1030 1056 1082 1063 1031 1087 1107 FUTB 454 388 421 418 357 476 387 GAVB 252 256 197 222 245 225 260 GREB 445 487 549 539 498 550 556 HEMB 0 0 184 425 446 390 342 JIUB 603 550 578 540 541 655 642 KIUB 669 557 627 653 629 635 648 KOLB 605 581 536 622 587 555 663 KRUB 498 378 334 373 195 425 353 LICB 463 458 387 407 361 466 447 MAHB 413 327 351 411 310 397 472 MALB 472 436 485 457 466 490 398 MATB 556 555 576 555 603 584 549 METB 730 685 708 737 674 762 733 MIAB 485 433 448 427 523 440 503 MONB 534 542 566 559 576 616 555 MORB 453 464 458 456 441 457 574 NOWB 453 427 414 404 359 330 404 PAQB 475 425 465 471 494 0 0 PDMB 416 496 500 470 538 479 427 REUB 452 327 458 458 408 448 454 REZB 714 764 742 609 712 584 630 RIKB 0 227 528 480 490 500 437 RIPB 752 743 703 707 706 717 757 ROTB 1404 1412 1447 1453 1456 1432 1424 SALB 364 394 327 414 444 448 377 SANB 509 557 540 516 525 512 580 SCRB 486 436 523 523 424 441 437 SPJB 1463 1550 1492 1508 1547 1590 1558 STJB 603 640 609 589 691 666 621 SYPB 1497 1383 919 664 1492 1525 1529 THUB 0 0 0 292 1385 1449 1336 TLHA 590 578 562 537 568 584 602 TRIB o 353 344 520 549 618 483 504 YASB 546 441 583 631 577 529 529 YELB 919 873 893 908 863 962 887 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 3927 1647 1710 3182 AMTB 1403 686 890 1191 ARFB 1118 451 566 967 ASDB 234 133 97 247 CADB 1048 638 760 934 CHAB 1056 671 905 1157 CICB 1179 645 849 991 CROB 1273 445 610 1096 DIOB 902 796 726 905 DJIB 1121 700 750 946 EVEB 493 311 352 720 FAIB 2833 1097 1231 2561 FUTB 1069 553 613 903 GAVB 896 0 0 861 GREB 1278 581 736 1148 HEMB 664 343 327 539 JIUB 1294 823 1105 1104 KIUB 1425 1031 1087 1230 KOLB 1304 899 1009 1110 KRUB 894 606 519 802 LICB 1000 615 628 893 MAHB 1048 373 504 938 MALB 1065 708 706 880 MATB 1373 718 800 1241 METB 1857 686 851 1821 MIAB 1177 574 551 1091 MONB 1269 840 880 1081 MORB 1088 608 854 995 NOWB 1083 315 527 1010 PAQB 851 439 482 680 PDMB 1151 593 643 1111 REUB 1109 535 583 910 REZB 2118 570 544 1688 RIKB 941 515 554 792 RIPB 2206 582 641 1814 ROTB 3907 1543 1580 3277 SALB 1056 567 615 875 SANB 1302 680 710 1186 SCRB 1159 687 655 943 SPJB 3794 1702 1884 3577 STJB 1501 840 950 1280 SYPB 3317 1501 1637 2796 THUB 1501 723 878 1444 TLHA 1681 573 620 1307 TRIB 774 856 832 1068 YASB 1320 784 817 1146 YELB 2598 852 899 2159 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 16.1 15.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -23.2 +- 2.2 mm TY = 0.5 +- 2.2 mm TZ = 10.0 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.4 +- 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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