****************************************************************************** dorisreport 08-Sep-2006 21:53:23 Message No 0680 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1387 = 06218 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1387 from 06-08-2006 to 12-08-2006 DORIS name (using day of start): 06218 Days of year: from 2006/218 to 2006/224 ============================================================== 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/ign06218wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06218wd04.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 1387 from 06-08-2006 to 12-08-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.79 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 06-08-2006 22510 22 22488 0.1 07-08-2006 22405 12 22393 0.1 08-08-2006 22218 11 22207 0.0 09-08-2006 20901 15 20886 0.1 10-08-2006 20559 25 20534 0.1 11-08-2006 21025 15 21010 0.1 12-08-2006 21126 23 21103 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 6268 6228 6213 5895 5664 5729 5598 SPOT2 4490 4513 4645 4248 4100 4191 4427 SPOT4 4895 4850 4639 4206 4422 4454 4646 SPOT5 6835 6802 6710 6537 6348 6636 6432 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.423 0.403 0.414 0.400 0.411 0.405 0.452 SPOT2 0.442 0.415 0.423 0.419 0.408 0.418 0.407 SPOT4 0.425 0.415 0.449 0.432 0.424 0.406 0.414 SPOT5 0.363 0.369 0.365 0.357 0.366 0.363 0.385 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 1374 1447 1481 1397 1390 1425 1475 AMTB 477 488 439 473 447 482 510 ASDB 398 274 354 336 297 168 0 CADB 504 457 457 314 442 543 491 CHAB 625 611 637 650 652 637 668 CICB 482 468 482 455 457 479 441 CROB 346 352 339 393 412 404 364 DIOB 353 353 361 494 441 433 423 DJIB 460 443 495 469 482 438 427 EASB 475 538 469 466 573 507 452 EVEB 259 271 260 259 246 237 264 FAIB o 1024 1067 1026 565 0 0 0 FUTB 410 413 431 405 465 427 370 GAVB 215 238 206 226 203 240 239 GREB 523 557 474 477 395 500 498 HBKB 441 478 519 496 559 535 477 HEMB 324 399 316 330 386 307 374 KESB 556 588 542 557 536 491 549 KIUB 580 575 574 541 575 582 610 KOLB 555 565 547 520 520 625 578 KRUB 516 460 469 439 480 446 477 LICB 416 352 452 461 430 248 397 MAHB 302 359 353 347 298 395 369 MALB 367 432 300 440 490 419 426 MATB 430 392 253 0 0 0 0 METB 701 750 675 671 700 662 739 MIAB 514 441 424 481 427 457 503 MONB 548 564 552 551 593 532 502 MORB 490 478 530 383 384 501 428 PAQB 466 503 519 477 515 582 531 PDMB 500 519 419 494 532 445 463 REUB 352 336 399 376 355 304 411 REZB 722 707 689 693 730 614 577 RIPB 743 680 668 674 706 749 661 ROTB 1340 1401 1400 1432 1374 1411 1323 SALB 516 464 485 504 534 412 376 SANB 587 553 566 484 487 586 615 SCRB 434 506 514 456 524 480 468 SODB o 406 431 468 229 449 527 462 SPJB 1540 1472 1478 1470 1484 1466 1461 SYPB 1409 1430 1439 1457 1390 1421 1489 THUB 1238 1281 1335 1360 1313 1329 1205 TLHA 564 582 541 522 487 580 537 TRIB o 551 444 491 616 470 471 504 YASB 582 501 545 594 560 474 563 YELB 800 804 799 406 0 801 761 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 3822 1608 1689 3158 AMTB 1213 612 578 1102 ASDB 727 326 337 591 CADB 1120 661 713 907 CHAB 1411 916 1069 1265 CICB 1121 718 747 946 CROB 953 514 439 833 DIOB 858 772 684 709 DJIB 1111 718 668 924 EASB 1106 914 897 956 EVEB 508 355 321 673 FAIB 1412 571 598 1284 FUTB 1114 605 627 810 GAVB 948 0 0 769 GREB 1328 543 569 1222 HBKB 1304 694 703 995 HEMB 1018 346 414 826 KESB 1447 697 731 1126 KIUB 1370 946 982 1096 KOLB 1296 825 1078 999 KRUB 1156 654 695 936 LICB 969 604 493 854 MAHB 952 367 416 870 MALB 1013 601 684 804 MATB 395 150 255 335 METB 1837 785 847 1669 MIAB 1187 640 630 1034 MONB 1301 858 836 1069 MORB 1109 564 745 955 PAQB 1193 888 862 937 PDMB 1193 624 638 1101 REUB 954 450 492 824 REZB 1922 667 684 1646 RIPB 2147 597 594 1714 ROTB 3798 1480 1539 3142 SALB 1147 709 680 952 SANB 1351 695 919 1148 SCRB 1139 702 831 881 SODB 1073 583 605 871 SPJB 3882 1575 1804 3441 SYPB 3716 1669 1774 3187 THUB 3328 1660 1627 2735 TLHA 1571 513 670 1243 TRIB 1213 739 788 1024 YASB 1202 852 832 1173 YELB 1553 645 706 1624 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 19.0 12.8 13.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -31.5 +- 1.8 mm TY = 15.1 +- 1.7 mm TZ = 43.2 +- 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 1.26 0.78 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr