****************************************************************************** dorisreport 19-Sep-2006 22:23:21 Message No 0687 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1388 = 06225 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1388 from 13-08-2006 to 19-08-2006 DORIS name (using day of start): 06225 Days of year: from 2006/225 to 2006/231 ============================================================== 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/ign06225wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06225wd04.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 1388 from 13-08-2006 to 19-08-2006 Total number of stations = 43 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.75 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 13-08-2006 21149 4 21145 0.0 14-08-2006 20765 12 20753 0.1 15-08-2006 21007 4 21003 0.0 16-08-2006 21358 12 21346 0.1 17-08-2006 20927 9 20918 0.0 18-08-2006 17372 6 17366 0.0 19-08-2006 20804 9 20795 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 5970 5683 5974 5809 5752 6066 5870 SPOT2 4466 4325 4268 4319 4243 2756 4266 SPOT4 4458 4341 4400 4658 4638 4419 4322 SPOT5 6251 6404 6361 6560 6285 4125 6337 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.396 0.394 0.399 0.395 0.382 0.404 0.402 SPOT2 0.409 0.417 0.419 0.412 0.407 0.383 0.411 SPOT4 0.397 0.407 0.398 0.416 0.422 0.440 0.428 SPOT5 0.351 0.350 0.355 0.359 0.349 0.362 0.369 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 1433 1382 1504 1382 1466 1510 1382 AMTB 488 511 456 507 498 437 444 CADB 444 359 518 496 525 470 425 CHAB 640 661 616 655 675 561 631 CICB 400 508 482 449 489 411 388 CROB 321 377 311 399 396 334 340 DIOB 430 477 474 386 378 267 389 DJIB 464 476 474 500 460 429 468 EASB 520 508 489 494 445 444 541 EVEB 244 260 265 256 238 225 312 FUTB 448 410 434 454 444 366 426 GAVB 165 166 231 263 226 235 229 GREB 548 569 307 482 581 481 431 HBKB 478 513 565 440 548 460 482 HEMB 499 377 328 406 398 304 388 KESB 557 529 510 497 544 548 576 KIUB 573 624 640 576 567 557 595 KOLB 513 533 589 578 568 558 476 KRUB 375 430 490 450 477 323 494 LICB 376 421 471 418 386 416 372 MAHB 314 160 356 362 357 389 346 MALB 427 448 475 368 382 447 464 METB 650 744 703 722 686 648 691 MIAB 461 395 413 486 435 466 436 MONB 524 565 332 549 570 493 540 MORB 432 550 407 493 515 410 451 PAQB 479 559 527 499 491 505 418 PDMB 524 447 414 489 400 351 517 REUB 368 373 407 378 395 378 355 REZB 818 676 606 705 649 698 615 RIPB 663 699 740 761 717 641 669 ROTB 1445 1406 1323 1320 1371 1275 1448 SALB 542 463 441 519 464 356 571 SANB 543 541 562 542 560 523 542 SCRB 498 468 466 470 510 457 467 SODB o 418 471 472 450 451 399 379 SPJB 1535 1530 1493 1580 1401 1259 1496 SYPB 1427 1399 1422 1436 1463 1434 1376 THUB 1387 1339 1427 1441 1282 1187 1336 TLHA 541 420 490 571 588 515 513 TRIB o 494 499 520 530 410 450 532 YASB 610 467 558 538 531 577 585 YELB 794 829 865 791 809 738 820 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 3838 1767 1719 3113 AMTB 1210 629 592 1112 CADB 1155 637 695 923 CHAB 1357 827 1136 1297 CICB 1067 635 710 917 CROB 908 425 496 773 DIOB 928 721 700 655 DJIB 1080 710 746 926 EASB 1134 827 925 958 EVEB 493 369 417 592 FUTB 1143 535 564 960 GAVB 952 0 0 683 GREB 1348 694 551 1053 HBKB 1324 641 644 1045 HEMB 1090 430 415 967 KESB 1428 754 693 1077 KIUB 1384 902 1023 1161 KOLB 1283 939 939 951 KRUB 1144 527 716 800 LICB 1080 493 569 873 MAHB 863 431 382 782 MALB 1050 652 709 849 METB 1835 817 770 1675 MIAB 1176 500 689 941 MONB 1244 730 715 1067 MORB 1107 718 675 962 PAQB 1168 848 839 926 PDMB 1276 459 597 1012 REUB 867 548 550 865 REZB 2147 493 606 1726 RIPB 2201 576 589 1682 ROTB 3769 1477 1486 3143 SALB 1265 587 685 1016 SANB 1431 643 882 1059 SCRB 1208 587 794 945 SODB 1160 542 608 914 SPJB 3924 1509 1818 3359 SYPB 3711 1738 1704 3111 THUB 3427 1627 1723 2946 TLHA 1536 329 646 1318 TRIB 1162 683 844 968 YASB 1393 785 911 1044 YELB 2003 813 888 2203 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 12.9 15.2 17.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -23.9 +- 1.9 mm TY = 12.1 +- 1.8 mm TZ = 55.4 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.6 +- 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 1.53 0.36 ============================================================== Please do not reply directly to this message, but send comments and 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