****************************************************************************** dorisreport 02-Dec-2005 22:03:18 Message No 0437 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1346 = 05296 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1346 from 23-10-2005 to 29-10-2005 DORIS name (using day of start): 05296 Days of year: from 2005/296 to 2005/302 ============================================================== 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/ign05296wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05296wd04.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 1346 from 23-10-2005 to 29-10-2005 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.75 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 23-10-2005 22450 12 22438 0.1 24-10-2005 21930 27 21903 0.1 25-10-2005 23130 28 23102 0.1 26-10-2005 23751 16 23735 0.1 27-10-2005 23527 39 23488 0.2 28-10-2005 23438 29 23409 0.1 29-10-2005 23378 26 23352 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 6228 6075 6200 6652 6481 6387 6578 SPOT2 4972 4540 4928 4912 4816 5040 4701 SPOT4 4744 4822 5146 5149 5023 4927 4856 SPOT5 6494 6466 6828 7022 7168 7055 7217 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.400 0.395 0.391 0.383 0.387 0.393 0.405 SPOT2 0.423 0.449 0.436 0.412 0.399 0.439 0.436 SPOT4 0.395 0.411 0.410 0.423 0.429 0.416 0.420 SPOT5 0.357 0.339 0.349 0.351 0.349 0.368 0.361 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 1489 1416 1481 1610 1423 1540 1498 AMTB 88 0 0 0 0 0 0 ASDB 187 154 278 346 302 277 304 BEMB 1165 1161 1733 1730 1543 1516 1711 CADB 477 503 509 319 443 474 523 CHAB 154 0 0 0 0 0 0 CICB 496 459 490 499 448 470 460 CROB 382 382 380 339 344 283 328 DJIB 179 0 0 0 0 0 0 EASB 468 485 495 460 465 552 460 EVEB 232 253 249 286 289 262 235 FAIB o 1049 1053 1108 1093 1002 1142 1086 FUTB 447 364 388 428 410 463 390 HBKB 479 444 498 509 486 550 504 HEMB 291 357 343 322 351 360 298 JIUB 536 474 476 486 482 538 537 KESB 106 95 90 451 584 463 489 KIUB 604 572 596 588 614 611 572 KOLB 601 492 569 610 471 486 560 KRUB 362 366 437 342 354 475 351 LIBB 0 0 80 73 83 60 87 MALB 486 469 510 470 502 529 471 MANB o 423 477 430 407 456 412 441 MATB 479 484 468 480 450 440 389 METB 759 647 772 755 738 736 710 MIAB 535 272 328 569 572 514 545 MORB 440 433 514 486 427 439 461 MSPB 462 553 545 629 564 493 605 NOWB 378 446 331 351 319 367 497 PAQB 562 523 526 552 522 505 525 PDMB 391 509 444 430 532 501 404 REUB 525 385 435 473 414 475 391 REZB 498 775 617 668 806 718 687 RIPB 787 674 660 682 612 700 597 ROTB 1148 1370 1322 1212 1341 1219 1366 SAKB 745 665 780 771 786 775 651 SALB 90 100 82 387 400 458 335 SANB 497 590 548 542 524 499 553 SCRB 484 495 432 410 445 487 471 SODB o 541 488 555 535 502 544 538 SPJB 1643 1605 1680 1618 1586 1669 1489 STJB 681 646 681 631 739 635 631 SYPB 1477 1278 1398 1346 1316 1368 1323 THUB 1321 1254 1414 1296 1254 1290 1399 TLHA 550 600 561 519 517 467 539 TRIB o 515 509 416 471 558 415 475 YASB 515 555 515 597 581 477 526 YELB 938 886 900 916 889 952 831 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- DIOA 0 0 480 531 511 362 459 KRAB 0 155 105 74 31 36 69 this is due to the lack of data or to some stations related problems as described below DIOA 24 9 2005 1 1 2010 too few data KRAB 31 7 2005 1 1 2010 equipment problem, insufficient power 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3851 1862 2093 2955 AMTB 0 0 22 70 ASDB 570 354 407 644 BEMB 4321 1876 2067 3328 CADB 1161 707 698 866 CHAB 0 166 0 0 CICB 1204 648 721 970 CROB 956 380 476 754 DJIB 0 90 36 57 EASB 1092 918 878 846 EVEB 520 339 321 691 FAIB 2845 1186 1249 2543 FUTB 1131 469 559 945 HBKB 1324 602 687 1270 HEMB 960 293 409 811 JIUB 1344 603 791 1041 KESB 696 783 401 545 KIUB 1440 869 1053 1196 KOLB 1340 745 876 1080 KRUB 1011 586 584 718 LIBB 0 405 0 0 MALB 1176 773 843 907 MANB 1218 577 560 904 MATB 1242 460 639 1037 METB 1988 783 824 1734 MIAB 1129 699 742 948 MORB 1053 675 705 950 MSPB 1396 724 814 1122 NOWB 1139 366 412 953 PAQB 1259 858 878 1022 PDMB 1182 532 682 1039 REUB 1081 690 631 910 REZB 2130 434 698 1734 RIPB 1855 759 768 1580 ROTB 3469 1361 1473 3075 SAKB 1733 1212 1155 1373 SALB 661 597 370 373 SANB 1392 686 732 1164 SCRB 1143 736 740 831 SODB 1239 833 899 958 SPJB 3721 2263 2345 3537 STJB 1585 988 956 1336 SYPB 3572 1446 1612 3175 THUB 3205 1848 1739 2834 TLHA 1636 571 608 1118 TRIB 1156 675 718 992 YASB 1339 809 776 1092 YELB 2559 934 914 2139 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- DIOA 795 495 556 660 KRAB 0 478 0 0 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 17.0 16.3 18.6 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -13.3 +- 2.3 mm TY = 10.6 +- 2.0 mm TZ = -4.0 +- 2.2 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.7 +- 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 1.23 0.50 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr