This is a multi-part message in MIME format... ------------=_1097653547-2395-3 ****************************************************************************** dorisreport 12-Oct-2004 21:53:13 Message No 0007 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1283 = 04221 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1283 from 08-08-2004 to 14-08-2004 DORIS name (using day of start): 04221 Days of year: from 2004/221 to 2004/227 ============================================================== 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/ign04221wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign04221wd04.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, 13, L13616, doi:10.1029/2004GL020038. 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 4) Global Statistics ==================== GPS week number 1283 from 08-08-2004 to 14-08-2004 Total number of stations = 40 Total number of satellites = 5 Combinations (daily to weekly) CHI2 / DOF = 2.43 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 08-08-2004 23075 73 23002 0.3 09-08-2004 23296 60 23236 0.3 10-08-2004 23979 31 23948 0.1 11-08-2004 24033 27 24006 0.1 12-08-2004 23842 38 23804 0.2 13-08-2004 24033 61 23972 0.3 14-08-2004 24314 53 24261 0.2 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 3314 4061 4112 4046 4083 4359 4316 SPOT2 4049 4086 4246 4079 4060 3885 3935 SPOT4 4254 4332 4248 4201 4270 4318 4456 SPOT5 6067 5966 6212 6301 6140 6132 6265 TOPEX 5318 4791 5130 5379 5251 5278 5289 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.478 0.500 0.514 0.495 0.512 0.528 0.491 SPOT2 0.423 0.416 0.431 0.430 0.438 0.417 0.411 SPOT4 0.444 0.441 0.434 0.435 0.437 0.450 0.447 SPOT5 0.397 0.420 0.396 0.392 0.414 0.431 0.428 TOPEX 0.454 0.456 0.431 0.460 0.472 0.458 0.453 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 1581 1740 1797 1716 1720 1698 1809 ASDB 257 232 167 197 216 163 168 CHAB 141 153 150 141 155 98 85 CICB 530 603 474 525 591 582 552 COLA o 525 466 537 482 577 571 488 CROB 612 555 535 588 624 542 513 DIOA o 440 471 488 443 439 463 524 DJIB 450 555 480 543 585 453 359 EASB 587 653 539 617 617 551 597 FAIB o 1079 1173 1077 1053 1226 1219 1030 FUTB 531 533 492 594 625 609 493 GOMB 103 108 60 61 11 121 159 HBKB 502 587 526 456 630 577 485 HEMB 391 370 392 467 369 295 449 JIUB 61 0 39 75 40 34 0 KIUB 532 610 536 565 584 559 544 KOLB 488 419 552 490 546 595 448 KRAB o 1007 985 1030 815 823 788 771 KRUB 552 578 616 646 517 650 712 LIBB 407 346 420 242 291 277 416 MAHB 268 166 389 506 431 561 482 METB 760 776 803 778 720 792 851 MSPB 631 691 680 737 684 672 642 PAQB 435 438 513 473 535 562 491 PDMB 444 375 422 492 410 471 492 PURA 420 240 199 326 368 208 252 REUB 0 0 0 0 0 93 119 REYB 760 793 802 820 874 883 826 RIDA 369 435 402 446 411 409 450 RIPB 1179 991 1159 1100 1063 1086 1181 SAKA o 753 939 970 916 997 803 926 SALB 493 411 544 609 437 376 549 SANB 679 572 715 626 606 848 667 SODB o 507 552 521 498 562 570 566 STJB 254 365 466 413 362 411 331 SYPB 1466 1601 1615 1669 1690 1603 1739 TLHA 763 734 641 697 546 698 743 TRIB o 602 528 620 660 514 611 714 YASB 662 539 727 624 563 649 746 YELB 778 928 911 964 915 906 980 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- MANB 11 0 0 0 0 0 0 RAQB 82 108 0 0 0 0 0 MARB 259 83 160 165 294 161 460 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 14.3 16.7 10.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign03d02 TX = -15.9 +- 2.3 mm TY = 17.5 +- 2.1 mm TZ = 34.0 +- 2.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign03d02 S = -1.5 +- 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 1.31 0.58 ============================================================== ------------=_1097653547-2395-3 Content-Type: text/plain; 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