****************************************************************************** dorisreport 19-Jun-2006 17:13:14 Message No 0612 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1374 = 06127 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1374 from 07-05-2006 to 13-05-2006 DORIS name (using day of start): 06127 Days of year: from 2006/127 to 2006/133 ============================================================== 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/ign06127wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06127wd04.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 1374 from 07-05-2006 to 13-05-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.89 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 07-05-2006 22489 47 22442 0.2 08-05-2006 22731 11 22720 0.0 09-05-2006 21828 9 21819 0.0 10-05-2006 21509 32 21477 0.1 11-05-2006 22091 13 22078 0.1 12-05-2006 21361 15 21346 0.1 13-05-2006 20962 26 20936 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 6208 6617 6223 5944 6171 5954 5914 SPOT2 4556 4529 4271 4299 4548 4184 3868 SPOT4 4713 4726 4656 4601 4644 4541 4516 SPOT5 6965 6848 6669 6633 6715 6667 6638 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.416 0.402 0.398 0.397 0.392 0.417 0.401 SPOT2 0.440 0.447 0.426 0.417 0.410 0.442 0.430 SPOT4 0.416 0.429 0.413 0.438 0.427 0.429 0.420 SPOT5 0.365 0.371 0.370 0.355 0.357 0.381 0.382 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 1393 1479 1385 1454 1494 1385 1408 AMTB 485 467 512 510 513 428 459 ASDB 323 340 406 294 277 375 334 BEMB 1646 1602 1558 1553 1673 1726 1435 CADB 478 555 509 489 504 479 457 CHAB 741 721 699 762 712 693 682 CROB 353 327 359 368 276 316 380 EASB 521 481 469 426 479 534 503 EVEB 259 274 244 253 267 312 241 FAIB o 1088 1064 1000 1127 1069 992 1075 FUTB 443 436 464 434 438 443 412 GAVB 242 316 361 308 309 284 287 GREB 469 506 510 550 573 421 482 HEMB 392 322 353 395 346 410 349 JIUB 547 488 483 562 578 463 552 KESB 574 468 558 534 513 565 569 KIUB 572 584 579 571 541 585 559 KOLB 538 596 571 529 643 581 502 KRUB 463 470 374 509 465 523 444 LICB 340 343 378 214 378 287 430 MAHB 401 415 384 382 388 290 183 MALB 460 469 414 414 432 447 478 MANB o 454 472 479 429 493 439 464 MATB 456 446 434 437 452 425 453 METB 779 788 715 749 758 715 758 MIAB 355 394 494 442 398 443 448 MONB 582 506 537 561 503 547 586 MORB 459 456 485 490 531 465 382 MSPB 423 519 481 542 634 520 513 PAQB 537 576 493 516 593 523 521 PDMB 466 418 520 532 463 452 504 REUB 371 429 331 403 424 331 364 REZB 676 661 711 680 705 613 795 RIPB 655 648 674 666 661 652 601 ROTB 1060 1129 1166 1083 1081 1089 1126 SALB 324 355 416 447 409 545 498 SANB 552 582 528 513 593 542 522 SCRB 463 496 428 463 506 431 507 SODB o 432 461 448 448 499 415 453 SPJB 1516 1463 453 0 0 0 0 STJB 636 521 625 639 561 623 648 SYPB 1385 1386 1351 1330 1413 1344 1284 TLHA 593 574 541 647 648 620 590 TRIB o 477 478 551 434 507 542 422 YASB 495 534 533 563 496 557 554 YELB 840 802 785 809 813 832 792 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 3824 1650 1709 3150 AMTB 1235 622 619 1113 ASDB 777 425 522 808 BEMB 4418 1851 1803 3603 CADB 1208 762 828 858 CHAB 1668 1116 1119 1359 CROB 882 404 452 772 EASB 1066 743 1020 946 EVEB 507 383 386 646 FAIB 2863 1112 1192 2554 FUTB 1046 650 610 970 GAVB 1256 0 0 988 GREB 1381 649 568 1120 HEMB 1063 384 478 832 JIUB 1357 753 769 1097 KESB 1406 729 785 1060 KIUB 1353 953 909 1174 KOLB 1277 1005 948 1006 KRUB 1137 654 718 893 LICB 936 428 414 786 MAHB 876 406 534 833 MALB 1125 647 729 873 MANB 1245 635 660 930 MATB 1102 575 562 1049 METB 1979 831 898 1797 MIAB 1071 552 605 935 MONB 1352 736 849 1070 MORB 1062 746 698 936 MSPB 1276 661 821 1047 PAQB 1210 908 867 1000 PDMB 1234 635 598 1083 REUB 915 512 509 864 REZB 2120 465 705 1739 RIPB 1889 663 646 1533 ROTB 3374 663 834 3131 SALB 1201 660 756 574 SANB 1343 837 861 1031 SCRB 1121 637 761 972 SODB 1205 578 629 914 SPJB 1336 576 550 1097 STJB 1510 839 893 1248 SYPB 3568 1492 1619 3114 TLHA 1678 731 726 1256 TRIB 1151 739 803 916 YASB 1208 766 1014 949 YELB 2016 836 898 2116 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 16.0 18.9 16.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -30.8 +- 1.9 mm TY = 23.9 +- 1.9 mm TZ = -9.6 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.1 +- 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 1.92 0.84 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr