****************************************************************************** dorisreport 15-Aug-2007 02:31:21 Message No 0969 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1436 = 07196 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1436 from 15-07-2007 to 21-07-2007 DORIS name (using day of start): 07196 Days of year: from 2007/196 to 2007/202 ============================================================== 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/ign07196wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07196wd04.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 1436 from 15-07-2007 to 21-07-2007 Total number of stations = 50 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.02 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 15-07-2007 23393 11 23382 0.0 16-07-2007 22559 6 22553 0.0 17-07-2007 21765 11 21754 0.1 18-07-2007 22632 2 22630 0.0 19-07-2007 22684 15 22669 0.1 20-07-2007 21143 6 21137 0.0 21-07-2007 17208 3 17205 0.0 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 6601 6224 4990 5892 6324 6471 6755 SPOT2 4090 4078 4329 4356 3979 1981 1657 SPOT4 5232 5163 5024 4992 5061 5184 5272 SPOT5 7459 7088 7411 7390 7305 7501 3521 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.445 0.405 0.428 0.418 0.408 0.401 0.404 SPOT2 0.439 0.444 0.459 0.457 0.437 0.454 0.434 SPOT4 0.422 0.425 0.418 0.434 0.444 0.438 0.428 SPOT5 0.384 0.370 0.375 0.367 0.369 0.378 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 1329 1403 1471 1453 1404 1267 1414 AMUB 461 472 523 462 496 463 438 ARFB 385 423 457 431 409 388 343 ASDB 371 334 356 347 384 334 299 BEMB 1696 1645 1693 1723 1611 1600 1507 BETB 469 349 388 475 416 402 416 CADB 550 518 437 424 489 480 492 CHAB 684 685 714 742 674 622 620 CICB 532 469 495 524 467 439 453 CRPB 0 0 0 0 0 149 223 DIOB 465 453 436 460 457 368 354 DJIB 501 448 469 470 493 370 398 EASB 413 437 520 500 449 442 404 EVEB 274 263 259 266 279 224 230 FAIB o 1019 923 916 930 931 932 900 FUTB 408 416 316 423 334 333 338 GAVB 264 264 176 236 260 238 262 GREB 487 484 469 537 400 518 488 HBMB 529 441 518 466 456 284 457 HEMB 377 405 456 367 409 372 328 JIUB 557 464 527 531 489 519 457 KETB 566 557 587 614 532 567 480 KIUB 548 623 600 602 599 516 546 KOLB 657 584 567 586 547 476 556 KRUB 464 476 443 459 457 398 406 LICB 475 387 417 437 433 332 363 MAHB 392 222 325 198 358 352 367 MALB 375 344 405 482 475 322 412 MANB o 472 491 407 492 402 426 440 MATB 510 548 469 570 509 372 459 METB 704 708 719 702 686 653 639 MIAB 501 475 395 419 452 415 400 MONB 465 528 558 545 580 520 465 MORB 452 439 480 468 346 430 420 MSPB 567 502 587 542 523 511 497 NOWB 403 231 298 411 393 358 306 REUB 416 343 371 418 357 315 375 REZB 736 767 795 738 743 738 570 RIKB 439 252 514 415 441 377 424 RIPB 703 606 544 635 619 651 599 SALB 446 511 531 477 672 357 401 SANB 594 605 490 487 502 542 530 SCRB 438 502 406 418 497 438 378 SODB o 415 303 371 483 436 430 409 SPJB 1396 1442 1492 1474 1386 1379 1361 STJB 646 728 630 705 652 633 570 SYPB 1307 1316 1265 1328 1261 1225 1311 THUB 1328 1323 1392 1339 1349 1243 1143 TLSB 609 652 661 578 582 601 671 YASB 561 648 590 599 544 489 522 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 10 12 0 0 0 0 0 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 3889 1205 1722 3222 AMUB 1242 449 656 1133 ARFB 1113 410 516 901 ASDB 904 368 558 867 BEMB 4534 1419 1909 4113 BETB 1039 509 730 901 CADB 1145 700 726 1025 CHAB 1652 764 1161 1357 CICB 1248 574 798 957 CRPB 424 141 126 349 DIOB 895 583 756 900 DJIB 1094 553 733 943 EASB 1103 627 883 1030 EVEB 543 218 397 755 FAIB 2734 763 1235 2527 FUTB 1084 282 533 944 GAVB 999 16 6 866 GREB 1329 381 664 1228 HBMB 1219 591 752 937 HEMB 1040 367 557 890 JIUB 1313 646 898 1021 KETB 1463 629 826 1173 KIUB 1418 752 1125 1197 KOLB 1337 728 1097 1031 KRUB 1184 499 717 975 LICB 1082 444 581 907 MAHB 898 316 440 766 MALB 1062 461 723 872 MANB 1264 509 652 940 MATB 1245 352 747 1262 METB 1934 561 825 1781 MIAB 1116 488 629 1105 MONB 1286 599 844 1103 MORB 1071 485 735 950 MSPB 1337 573 768 1198 NOWB 946 349 385 844 REUB 975 312 578 898 REZB 2297 447 759 1935 RIKB 1084 457 617 898 RIPB 1965 418 570 1601 SALB 1204 601 846 1003 SANB 1313 547 842 1195 SCRB 1161 389 766 945 SODB 1163 382 659 957 SPJB 3845 1201 1758 3524 STJB 1610 792 1060 1410 SYPB 3489 1177 1489 3157 THUB 3260 1219 1884 3073 TLSB 1715 591 925 1324 YASB 1345 660 937 1168 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- PDMB 0 61 0 3 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 14.3 17.4 20.0 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -19.7 +- 2.6 mm TY = 22.7 +- 2.6 mm TZ = 41.5 +- 2.3 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.9 +- 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 1.07 0.74 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr