****************************************************************************** dorisreport 11-Feb-2006 02:25:54 Message No 0503 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1356 = 06001 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1356 from 01-01-2006 to 07-01-2006 DORIS name (using day of start): 06001 Days of year: from 2006/1 to 2006/7 ============================================================== 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/ign06001wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06001wd04.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 1356 from 01-01-2006 to 07-01-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.63 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 01-01-2006 23501 8 23493 0.0 02-01-2006 21830 20 21810 0.1 03-01-2006 23303 12 23291 0.1 04-01-2006 22781 35 22746 0.2 05-01-2006 23359 26 23333 0.1 06-01-2006 23751 28 23723 0.1 07-01-2006 23422 8 23414 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 6468 6492 6440 5380 6419 6492 6731 SPOT2 4895 3272 4706 4967 4632 4828 4572 SPOT4 5024 4969 5004 5145 5017 5058 4923 SPOT5 7106 7077 7141 7254 7265 7345 7188 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.397 0.379 0.388 0.424 0.397 0.395 0.393 SPOT2 0.411 0.405 0.401 0.484 0.439 0.420 0.419 SPOT4 0.406 0.402 0.407 0.417 0.411 0.414 0.419 SPOT5 0.354 0.336 0.348 0.352 0.343 0.357 0.343 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 1499 1372 1527 1525 1519 1406 1574 AMTB 475 427 455 498 483 461 489 ASDB 259 388 278 305 357 303 367 BEMB 1704 1724 1621 1654 1680 1650 1734 CHAB 696 627 616 692 637 684 671 CICB 515 393 461 515 446 484 501 CROB 308 324 382 357 359 294 297 EASB 464 483 482 423 447 528 484 EVEB 300 262 236 249 245 278 284 FAIB o 1030 1054 1157 1048 1017 1098 1038 FUTB 384 438 448 449 342 363 466 HBKB 519 488 554 557 441 445 517 HEMB 362 419 302 268 347 390 404 JIUB 534 449 548 583 505 540 549 KESB 547 545 567 497 526 578 518 KIUB 649 504 644 615 648 641 581 KOLB 537 508 551 593 508 478 507 KRUB 394 229 337 492 398 421 332 LICB 459 425 471 461 331 408 400 MALB 511 448 545 494 466 489 441 MANB o 489 427 468 482 492 471 458 MATB 376 487 417 413 463 464 446 METB 738 663 729 742 736 759 674 MIAB 552 461 479 524 599 512 524 MONB 503 492 571 542 532 548 550 MORB 430 469 420 508 443 477 528 MSPB 539 564 507 501 582 556 546 NOWB 312 293 345 416 392 316 326 PAQB 146 72 340 565 490 448 482 PDMB 327 326 285 349 510 488 370 REUB 411 334 472 476 412 368 376 REZB 675 681 755 702 654 678 469 RIPB 698 674 641 671 684 672 772 ROTB 1272 1076 1283 1386 1274 1284 1124 SALB 319 531 425 382 459 414 491 SANB 559 452 509 551 558 467 481 SCRB 538 435 478 499 449 481 466 SODB o 409 355 496 500 308 471 450 SPJB 1515 1373 1561 1518 1611 1610 1610 STJB 619 667 661 644 692 688 583 SYPB 1467 1282 1320 1361 1270 1378 1369 THUB 1337 1206 1392 1207 1254 1406 1264 TLHA 549 478 519 610 275 550 495 TRIB o 561 539 466 484 555 497 491 YASB 625 462 499 460 574 557 535 YELB 895 820 865 941 848 884 882 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 3801 1745 2173 3002 AMTB 1267 561 629 1050 ASDB 786 407 471 772 BEMB 4229 2092 2197 3809 CHAB 1635 837 1101 1317 CICB 1233 648 716 917 CROB 933 316 411 780 EASB 1057 741 881 1002 EVEB 523 325 409 660 FAIB 2846 1277 1090 2506 FUTB 1125 483 551 938 HBKB 1365 696 691 964 HEMB 989 397 407 863 JIUB 1338 770 752 1070 KESB 1336 698 757 1203 KIUB 1471 899 1025 1195 KOLB 1336 785 824 990 KRUB 1017 500 535 755 LICB 1054 616 530 927 MALB 1166 725 833 881 MANB 1274 637 635 927 MATB 1167 511 595 972 METB 1951 686 804 1809 MIAB 1272 745 871 973 MONB 1280 757 761 1114 MORB 1097 688 788 890 MSPB 1307 734 861 1099 NOWB 943 393 339 906 PAQB 857 680 573 621 PDMB 1167 466 542 690 REUB 1014 576 651 847 REZB 2049 630 501 1621 RIPB 1831 715 982 1539 ROTB 3482 1343 1170 3102 SALB 1100 568 691 938 SANB 1368 701 690 1037 SCRB 1175 672 713 969 SODB 1176 529 604 865 SPJB 3689 2087 2208 3360 STJB 1598 876 1010 1293 SYPB 3556 1416 1622 3148 THUB 3308 1541 1688 2907 TLHA 1574 420 491 1176 TRIB 1193 710 894 1014 YASB 1259 702 943 1044 YELB 2564 774 936 2085 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 17.5 21.7 12.0 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -6.2 +- 1.8 mm TY = -2.9 +- 1.8 mm TZ = -0.3 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.6 +- 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 1.52 0.47 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr