****************************************************************************** DORISMail 08-Jul-2004 21:23:45 Message No 0328 ****************************************************************************** Author: Pascal Willis Subject: DORIS summary files available from IGN/JPL Analysis Center Dear colleagues, for your information, the IGN/JPL IDS Analysis Center has started to distribute weekly DORIS summary reports to give all statistical information on the DORIS weekly sinex solutions. Thanks to Carey Noll, all files (592) are presently available at CDDIS and should be available soon at the IGN Data Center. The current naming convention has been derived from the current sinex naming convention. Those files can be downloaded from : ftp://cddisa.gsfc.nasa.gov/ignYYDDDwd05.sum.Z Future summary reports will be available as the same time as the IGN/JPL weekly sinex solutions also at the IDS Data Centers. When the DORISReport mail facility will available, these reports would also be distributed as DORISReports (but not anymore through the DORISMail. This will be the only one like that!) An example (latest submission = 04123 = week 1269) is given in annex. Please feel free to send us some comments if you would like to see other type of information in the future ones. Best regards Pascal Willis ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1269 from 02-05-2004 to 08-05-2004 DORIS name (using day of start): 04123 Days of year: from 2004/123 to 2004/129 ============================================================== 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 cddisa.gsfc.nasa.gov weekly sinex in free-network pub/doris/products/sinex_series/ignwd/ign04123wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign04123wd04.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., Y. Bar-Sever, and G. Tavernier (2003), DORIS as a potential part of a Global Geodetic Observing System, J. Geodyn, G07_10P_D-001, in press. Willis, P., M. Heflin (2004), External validation of the GRACE GGM01C gravity field using GPS and DORIS positioning results, Geophys. Res. Lett., 31, L13616, doi:10.1019/2004GL020038. Last changes in the time series data analysis: Week 678: See DORISMail #0288, start of the time series 4) Global Statistics ==================== GPS week number 1269 from 02-05-2004 to 08-05-2004 Total number of stations = 45 Total number of satellites = 5 Combinations (daily to weekly) CHI2 / DOF = 2.57 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 02-05-2004 27801 40 27761 0.1 03-05-2004 26853 29 26824 0.1 04-05-2004 27134 18 27116 0.1 05-05-2004 28053 41 28012 0.1 06-05-2004 27649 51 27598 0.2 07-05-2004 25963 31 25932 0.1 08-05-2004 27100 34 27066 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 4781 4329 4937 4734 5132 4174 4714 SPOT2 5011 4933 4949 5249 4490 4675 5006 SPOT4 5368 5312 5029 5034 5171 4921 5001 SPOT5 6621 6277 6726 6984 7004 6786 6600 TOPEX 5980 5973 5475 6011 5801 5376 5745 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.511 0.489 0.502 0.480 0.530 0.494 0.493 SPOT2 0.412 0.433 0.425 0.433 0.426 0.421 0.446 SPOT4 0.451 0.446 0.444 0.455 0.440 0.445 0.437 SPOT5 0.386 0.369 0.387 0.415 0.423 0.388 0.386 TOPEX 0.459 0.453 0.454 0.466 0.458 0.440 0.451 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 1674 1644 1703 1702 1666 1799 1736 ASDB 84 61 53 77 89 80 114 BELB 1239 1363 1286 1327 1240 0 0 CADB 539 577 373 528 629 455 477 CHAB 859 771 860 878 855 871 836 CICB 484 492 515 484 504 519 460 COLA o 520 536 523 481 576 456 489 CROB 488 427 575 579 469 507 626 DJIB 470 412 460 417 391 407 427 EASB 576 542 590 640 593 560 517 FAIB o 1118 1155 1063 1135 1161 1046 1180 GALA 424 501 456 603 551 451 588 GAVB 416 445 502 421 472 584 411 GREB 589 518 433 481 374 533 623 HBKB 555 372 501 651 532 474 497 HEMB 42 52 61 278 363 341 178 JIUB 31 105 77 31 33 0 141 KIUB 249 0 0 0 0 0 0 KOLB 473 478 460 507 600 495 556 KRAB o 1061 947 1002 1123 954 975 1036 KRUB 570 616 529 490 578 659 549 LIBB 282 384 235 449 383 301 328 MAHB 378 296 188 114 409 413 389 MANB 370 401 254 217 247 187 367 METB 870 785 826 832 815 865 873 MSPB 327 337 369 338 314 315 336 PAQB 514 478 493 556 534 508 463 PDMB 401 456 425 432 382 400 441 PURA 373 351 433 481 423 413 367 RAQB 534 330 315 477 495 386 453 REUB 452 399 358 450 542 438 402 REYB 791 678 708 761 766 776 826 RIDA 413 442 459 379 425 515 426 RIPB 997 1067 1011 894 996 1019 937 SAKA o 894 901 941 984 788 978 1018 SALB 436 499 559 466 470 447 524 SANB 589 663 537 576 755 628 528 SODB o 512 488 489 489 526 490 509 STJB 493 600 560 627 561 568 657 SYPB 1462 1319 1493 1354 1377 1426 1451 THUB 1475 1299 1344 1568 1522 1332 1471 TLHA 706 684 694 732 753 730 713 TRIB 571 545 632 551 568 560 566 YASB 620 669 765 627 505 685 637 YELB 912 793 1064 921 894 1000 994 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- GOMB 0 0 0 0 0 21 20 MARB 533 443 600 461 487 492 571 this is due to the lack of data or to some stations related problems as described below MARB 1 1 2004 1 1 2010 antenna fall 7) External Comparisons ======================= (for information) 7.1) Stations coordinates ------------------------- Looking at the transformation results Comparing with solution ign03d02 at epoch of observations Weekly DORIS residuals in mm N E V ------------------- WRMS 19.1 10.8 9.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign03d02 TX = -19.9 +- 2.1 mm TY = 14.5 +- 1.9 mm TZ = 9.5 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign03d02 S = -1.7 +- 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 1.21 0.69 ============================================================== -- Pascal Willis Jet Propulsion Laboratory, MS 238-646 Ph : 1-818-393-4748 4800 Oak Grove Drive FAX: 1-818-393-4965 Pasadena CA 91109 Em : Pascal.R.Willis@jpl.nasa.gov Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr