****************************************************************************** dorisreport 22-Aug-2006 21:48:09 Message No 0666 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1383 = 06190 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1383 from 09-07-2006 to 15-07-2006 DORIS name (using day of start): 06190 Days of year: from 2006/190 to 2006/196 ============================================================== 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/ign06190wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06190wd04.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 1383 from 09-07-2006 to 15-07-2006 Total number of stations = 49 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.91 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 09-07-2006 21949 59 21890 0.3 10-07-2006 22008 18 21990 0.1 11-07-2006 22918 40 22878 0.2 12-07-2006 22380 31 22349 0.1 13-07-2006 22263 16 22247 0.1 14-07-2006 22494 13 22481 0.1 15-07-2006 22635 27 22608 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 6180 6052 6357 6224 6047 6441 6323 SPOT2 4380 4353 4457 4360 4620 4452 4562 SPOT4 4431 4549 4837 4880 4743 4594 4725 SPOT5 6899 7036 7227 6885 6837 6994 6998 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.419 0.423 0.450 0.426 0.415 0.411 0.401 SPOT2 0.430 0.467 0.459 0.485 0.453 0.429 0.421 SPOT4 0.429 0.437 0.441 0.431 0.409 0.437 0.429 SPOT5 0.373 0.385 0.397 0.380 0.375 0.351 0.364 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 1401 1401 1438 1432 1470 1415 1408 AMTB 532 493 496 468 397 471 424 ASDB 341 376 310 318 336 331 381 BEMB 787 851 813 0 0 0 0 CHAB 683 729 714 629 721 642 684 CICB 432 467 509 454 466 501 466 CROB 359 354 334 340 377 364 350 DIOB 461 467 451 376 404 387 451 DJIB 88 98 79 276 449 465 460 EASB 521 453 408 489 539 433 509 EVEB 189 168 260 271 277 272 238 FAIB o 1026 1032 983 964 1084 986 988 FUTB 474 474 424 406 444 442 437 GAVB 219 248 229 252 179 167 223 GREB 551 518 474 506 527 518 428 HBKB 489 497 499 469 521 541 520 HEMB 434 327 331 403 395 276 379 JIUB 505 523 537 504 228 0 0 KESB 548 530 517 576 584 527 556 KIUB 584 618 580 545 586 544 577 KOLB 491 579 586 517 520 558 547 KRUB 387 468 480 511 469 442 506 LICB 415 477 441 428 397 479 497 MAHB 332 419 364 325 364 389 287 MALB 371 387 403 462 410 479 439 MANB o 452 434 499 361 321 482 410 MATB 509 462 488 421 420 433 472 METB 712 734 715 650 679 712 679 MIAB 462 411 459 453 402 449 485 MONB 550 587 550 506 592 533 563 MORB 469 531 456 480 500 448 390 MSPB 523 470 546 544 549 585 528 PAQB 0 0 0 492 521 573 548 PDMB 561 443 475 543 439 446 525 REUB 362 412 348 323 401 370 365 REZB 771 590 681 775 704 754 720 RIPB 598 731 700 570 603 555 629 ROTB 1134 1054 1010 1206 1148 1108 1133 SALB 518 458 415 512 519 437 449 SANB 565 546 636 609 565 618 573 SCRB 485 505 488 447 548 474 516 SODB o 435 514 416 415 454 491 440 SPJB 1527 1529 1530 1487 1466 1430 1521 SYPB 1316 1387 1383 1367 1313 1356 1274 THUB 0 0 827 1397 1341 1338 1337 TLHA 532 450 510 435 523 561 520 TRIB o 500 457 484 513 497 465 543 YASB 548 496 579 569 550 517 572 YELB 794 808 802 381 258 797 815 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 3807 1651 1695 3104 AMTB 1230 530 611 1097 ASDB 898 446 475 755 BEMB 780 321 500 927 CHAB 1611 1041 1045 1357 CICB 1111 687 724 972 CROB 908 477 476 747 DIOB 891 768 730 797 DJIB 542 626 428 448 EASB 1139 814 893 886 EVEB 464 388 253 625 FAIB 2682 1031 1178 2504 FUTB 1136 576 672 934 GAVB 942 0 0 718 GREB 1334 625 585 1193 HBKB 1308 662 645 1118 HEMB 1077 415 410 819 JIUB 851 443 547 667 KESB 1457 742 739 1099 KIUB 1377 890 993 1150 KOLB 1271 778 951 1059 KRUB 1134 685 656 935 LICB 1068 597 646 962 MAHB 932 348 494 901 MALB 1057 692 615 803 MANB 987 593 652 929 MATB 1204 599 573 1011 METB 1826 773 806 1715 MIAB 1129 621 588 1008 MONB 1306 786 855 1141 MORB 1125 630 775 928 MSPB 1328 757 819 1022 PAQB 664 521 501 580 PDMB 1297 581 665 1090 REUB 874 512 452 910 REZB 2184 631 666 1732 RIPB 1932 524 601 1487 ROTB 3386 834 838 3010 SALB 1210 695 756 893 SANB 1433 882 866 1164 SCRB 1208 740 760 941 SODB 1159 576 598 1035 SPJB 3865 1647 1815 3454 SYPB 3560 1545 1461 3155 THUB 2230 1042 1141 2010 TLHA 1499 436 602 1163 TRIB 1131 753 793 974 YASB 1370 855 765 1063 YELB 1568 669 750 1823 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 15.2 13.9 14.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -31.5 +- 2.0 mm TY = 13.7 +- 1.8 mm TZ = 58.8 +- 1.9 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 1.69 1.37 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr