****************************************************************************** dorisreport 27-Aug-2007 16:33:50 Message No 0981 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1438 = 07210 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1438 from 29-07-2007 to 04-08-2007 DORIS name (using day of start): 07210 Days of year: from 2007/210 to 2007/216 ============================================================== 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/ign07210wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07210wd04.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.E. Bar-Sever, G. Tavernier (2005), DORIS as a potential part of a Global Geodetic Observing System, J. Geodyn., 40(4-5), 494-501, DOI: 10.1016/j.jog.2005.06.011 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. Week 1405 = 06344 : Use GIPSY/OASIS software installed at Institut de Physique du Globe de Paris 4) Global Statistics ==================== GPS week number 1438 from 29-07-2007 to 04-08-2007 Total number of stations = 52 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.87 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 29-07-2007 17454 5 17449 0.0 30-07-2007 19688 1 19687 0.0 31-07-2007 25084 15 25069 0.1 01-08-2007 24229 8 24221 0.0 02-08-2007 24043 5 24038 0.0 03-08-2007 24358 4 24354 0.0 04-08-2007 24457 20 24437 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 0 2127 7042 6876 6812 7040 6779 SPOT2 4380 4495 4692 4199 4014 4192 4524 SPOT4 5310 5307 5531 5420 5440 5286 5306 SPOT5 7759 7758 7804 7726 7772 7836 7828 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.000 0.402 0.450 0.410 0.402 0.409 0.400 SPOT2 0.439 0.432 0.426 0.439 0.449 0.434 0.440 SPOT4 0.418 0.428 0.410 0.431 0.419 0.435 0.438 SPOT5 0.374 0.372 0.391 0.375 0.378 0.364 0.373 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 901 1072 1515 1348 1412 1441 1387 AMUB 341 366 450 440 449 491 476 ARFB 264 287 462 399 358 392 412 ASDB 258 296 328 362 351 362 370 BEMB 1123 1256 1826 1827 1900 1782 1848 BETB 306 356 428 329 365 441 399 CADB 300 380 581 440 450 500 459 CHAB 491 591 768 726 656 728 669 CICB 299 333 537 458 433 472 453 CRPB 200 281 260 263 251 263 220 DIOB 339 391 427 430 410 440 489 DJIB 278 368 449 476 464 449 431 EASB 334 372 454 514 529 425 492 EVEB 208 176 266 281 262 264 261 FAIB o 605 740 991 964 1042 946 886 FUTB 289 308 363 384 444 418 425 GAVB 105 164 246 247 203 223 248 GREB 284 323 546 470 532 497 452 HBMB 335 449 459 465 469 444 445 HEMB 283 335 374 478 503 356 448 JIUB 350 358 492 492 421 561 481 KETB 392 453 581 578 603 579 608 KIUB 442 446 566 565 560 629 587 KOLB 384 542 648 551 534 607 552 KRUB 265 280 463 417 374 373 441 LICB 324 383 397 440 376 488 504 MAHB 113 113 377 290 354 374 354 MALB 326 376 454 478 438 476 484 MANB o 283 308 448 388 421 236 0 MATB 364 405 586 540 478 503 541 METB 465 530 724 675 709 720 714 MIAB 271 316 489 469 369 429 436 MONB 331 462 494 445 559 522 555 MORB 282 396 430 390 533 464 501 MSPB 313 391 572 562 540 490 514 NOWB 234 313 341 231 219 422 318 PAQB 0 133 483 485 472 497 430 REUB 285 362 431 392 349 352 395 REZB 411 627 674 772 569 671 706 RIKB 258 294 402 446 494 381 411 RIPB 482 542 835 795 693 759 834 SALB 392 419 487 569 530 479 617 SANB 324 344 572 510 498 474 539 SCRB 347 402 437 520 551 462 464 SODB o 330 415 477 407 478 477 450 SPJB 1017 1088 1510 1462 1526 1491 1536 STJB 443 418 534 623 560 673 644 SYPB 864 971 1380 1316 1323 1269 1241 THUB 936 1108 1287 1373 1417 1326 1226 TLSB 349 471 625 556 576 528 588 YASB 324 303 596 643 518 515 597 YEMB 536 764 833 799 915 979 1042 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- PDMB 0 0 15 39 57 61 63 this is due to the lack of data or to some stations related problems as described below PDMB 16 12 2006 1 1 2010 equipment problem DORISReport #945 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 2978 1446 1709 3172 AMUB 914 499 646 1117 ARFB 787 405 516 970 ASDB 736 456 537 856 BEMB 3530 2015 2349 4071 BETB 747 535 678 860 CADB 819 508 891 987 CHAB 1273 880 1236 1373 CICB 845 638 733 1000 CRPB 697 334 190 693 DIOB 726 755 764 875 DJIB 838 525 760 946 EASB 829 797 917 983 EVEB 384 409 392 707 FAIB 2103 912 1132 2561 FUTB 860 478 611 961 GAVB 792 12 3 840 GREB 990 427 721 1147 HBMB 930 511 685 1054 HEMB 845 519 647 895 JIUB 953 590 845 1176 KETB 1126 785 812 1171 KIUB 1076 850 1108 1267 KOLB 1053 866 978 1108 KRUB 861 353 647 955 LICB 882 629 617 951 MAHB 670 272 407 773 MALB 806 728 760 913 MANB 568 396 481 770 MATB 1034 499 826 1188 METB 1472 685 808 1804 MIAB 829 626 556 1017 MONB 1008 504 869 1136 MORB 812 567 800 956 MSPB 975 652 772 1102 NOWB 742 326 309 804 PAQB 900 446 538 779 REUB 763 470 574 938 REZB 1813 466 639 1926 RIKB 916 411 572 971 RIPB 1591 781 920 1795 SALB 986 705 938 967 SANB 1030 565 614 1192 SCRB 865 681 742 974 SODB 924 562 672 1029 SPJB 2811 1609 1841 3632 STJB 1195 588 1123 1382 SYPB 2760 1187 1539 3137 THUB 2538 1500 1758 3168 TLSB 1222 519 824 1318 YASB 1024 779 825 1028 YEMB 2048 911 1071 2184 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- PDMB 0 274 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 18.1 21.1 19.3 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -26.8 +- 2.4 mm TY = 11.4 +- 2.5 mm TZ = 30.6 +- 2.2 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.0 +- 0.4 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 1.99 0.92 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr