****************************************************************************** dorisreport 24-May-2007 08:23:23 Message No 0889 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Updated Report for week 1424 = 07112 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1424 from 22-04-2007 to 28-04-2007 DORIS name (using day of start): 07112 Days of year: from 2007/112 to 2007/118 ============================================================== 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/ign07112wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07112wd04.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 1424 from 22-04-2007 to 28-04-2007 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 -------------------------------------------------------- 22-04-2007 24204 7 24197 0.0 23-04-2007 23665 2 23663 0.0 24-04-2007 24721 4 24717 0.0 25-04-2007 23233 5 23228 0.0 26-04-2007 23997 5 23992 0.0 27-04-2007 24329 47 24282 0.2 28-04-2007 23710 4 23706 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 6702 6586 6839 5784 6880 6754 6793 SPOT2 4498 4106 4762 4557 4300 4676 4152 SPOT4 5222 5274 5269 5213 5126 5135 5035 SPOT5 7775 7697 7847 7674 7686 7717 7726 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.403 0.393 0.419 0.418 0.397 0.396 0.380 SPOT2 0.416 0.406 0.405 0.446 0.432 0.421 0.413 SPOT4 0.412 0.419 0.425 0.417 0.417 0.418 0.412 SPOT5 0.369 0.364 0.371 0.364 0.357 0.359 0.358 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 1400 1402 1426 1360 1426 1389 1363 ARFB 448 408 404 366 436 398 348 ASDB 337 379 339 362 228 397 313 BEMB 1675 1671 1688 1494 1637 1685 1621 BETB 430 448 360 422 462 413 445 CADB 503 515 530 415 478 518 519 CHAB 748 665 726 738 686 664 673 CICB 467 479 474 486 531 501 488 CRPB 285 431 295 323 507 366 487 DIOB 371 394 414 327 503 481 457 DJIB 488 377 394 348 489 477 484 EASB 522 383 459 433 359 484 504 EVEB 251 258 287 309 262 251 216 FAIB o 1057 1030 1041 986 1058 1039 1068 FUTB 456 370 371 408 377 316 417 GAVB 235 251 279 141 215 250 256 GREB 553 510 549 507 527 445 528 HBMB 484 530 392 460 529 504 515 HEMB 396 316 395 413 307 348 402 JIUB 0 0 446 276 0 0 0 KETB 0 0 37 122 84 86 70 KIUB 587 625 597 534 587 605 632 KOLB 534 539 587 546 590 583 545 KRUB 463 414 407 469 440 482 0 LICB 469 401 375 409 492 421 414 MALB 432 434 469 424 422 433 395 MANB o 435 406 440 423 441 416 381 MATB 607 519 558 546 528 571 494 METB 695 703 729 615 732 740 711 MIAB 430 506 501 460 421 464 481 MONB 624 535 530 457 506 595 597 MORB 479 494 396 424 495 426 448 MSPB 468 603 556 597 603 502 597 NOWB 253 417 350 245 302 343 374 PDMB 0 24 33 0 0 0 24 REUB 445 403 361 314 366 422 275 REZB 701 756 713 706 772 711 786 RIKB 450 383 480 404 480 347 425 RIPB 698 573 615 574 579 699 618 ROTB 1052 1063 1182 1080 1194 1101 1173 SALB 528 475 518 553 422 572 542 SANB 467 566 577 484 490 535 442 SCRB 435 379 422 447 450 384 453 SODB o 493 462 440 315 446 474 430 SPJB 1551 1471 1511 1439 1546 1499 1517 STJB 675 592 690 712 622 678 677 SYPB 1386 1340 1314 1256 1297 1367 1267 THUB 1371 1274 1352 1259 1366 1411 1310 TLHA 571 615 599 544 553 546 604 TRIB o 492 443 586 522 476 578 466 YASB 492 504 620 593 418 593 559 YELB 924 819 839 773 913 904 857 6.2) stations rejected from solution ------------------------------------ all available stations were processed and given in the output sinex solutions 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3655 1494 1707 3183 ARFB 1006 445 600 855 ASDB 834 449 465 776 BEMB 4472 1639 1782 3932 BETB 1041 573 707 863 CADB 1079 656 777 1062 CHAB 1622 921 1130 1362 CICB 1159 646 775 971 CRPB 997 280 468 1075 DIOB 760 717 712 826 DJIB 976 636 739 905 EASB 1004 783 840 879 EVEB 529 314 366 705 FAIB 2792 1012 1224 2550 FUTB 1053 442 483 901 GAVB 840 0 0 866 GREB 1395 543 661 1190 HBMB 1131 602 793 998 HEMB 1012 430 435 835 JIUB 239 188 131 209 KETB 0 400 0 0 KIUB 1355 938 1131 1196 KOLB 1278 727 999 1110 KRUB 911 512 571 839 LICB 996 617 661 888 MALB 969 588 726 852 MANB 1105 444 648 948 MATB 1290 667 793 1222 METB 1779 727 827 1786 MIAB 1139 538 636 1090 MONB 1216 730 889 1103 MORB 1074 603 739 933 MSPB 1329 702 842 1170 NOWB 870 326 395 786 PDMB 0 81 0 0 REUB 908 443 439 913 REZB 2206 558 754 1816 RIKB 1046 522 609 943 RIPB 1837 491 564 1602 ROTB 3225 835 933 3055 SALB 1208 704 896 967 SANB 1183 623 681 1201 SCRB 1027 538 640 932 SODB 1116 520 664 1014 SPJB 3712 1627 1835 3597 STJB 1597 722 1076 1384 SYPB 3468 1322 1563 3136 THUB 3213 1515 1790 3099 TLHA 1573 539 758 1326 TRIB 1161 730 795 1067 YASB 1167 803 819 1126 YELB 2417 696 901 2213 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- 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 15.3 18.7 12.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -29.5 +- 2.4 mm TY = 12.0 +- 2.4 mm TZ = 50.1 +- 2.3 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.4 +- 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 1.00 0.36 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr