****************************************************************************** dorisreport 24-Feb-2006 18:58:52 Message No 0514 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1358 = 06015 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1358 from 15-01-2006 to 21-01-2006 DORIS name (using day of start): 06015 Days of year: from 2006/15 to 2006/21 ============================================================== 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/ign06015wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06015wd04.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 1358 from 15-01-2006 to 21-01-2006 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.77 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 15-01-2006 23353 3 23350 0.0 16-01-2006 23103 17 23086 0.1 17-01-2006 23305 19 23286 0.1 18-01-2006 21229 20 21209 0.1 19-01-2006 22921 6 22915 0.0 20-01-2006 21612 6 21606 0.0 21-01-2006 23292 6 23286 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 6515 6381 6461 6469 6297 6530 6515 SPOT2 4539 4620 4704 2940 4531 2792 4728 SPOT4 4932 5074 5004 4790 4955 4983 5029 SPOT5 7364 7011 7117 7010 7132 7301 7014 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.393 0.395 0.395 0.397 0.401 0.408 0.407 SPOT2 0.434 0.426 0.429 0.410 0.415 0.400 0.423 SPOT4 0.436 0.425 0.427 0.419 0.409 0.412 0.417 SPOT5 0.360 0.364 0.373 0.362 0.366 0.364 0.350 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 1417 1465 1573 1219 1377 1337 1386 AMTB 510 508 439 488 454 495 533 ASDB 370 307 314 280 325 336 316 BEMB 1592 1705 1646 1488 1631 1499 1585 CADB 0 0 0 0 0 259 417 CHAB 591 691 715 604 714 587 689 CICB 437 460 481 406 491 452 456 CROB 356 381 293 293 356 399 341 EASB 486 462 464 504 466 350 452 EVEB 249 223 306 294 201 249 260 FAIB o 1016 992 1113 956 1078 1004 1002 FUTB 380 389 412 384 482 380 408 GREB 0 0 0 0 0 0 80 HBKB 491 536 512 395 553 444 461 HEMB 390 361 331 351 399 283 374 JIUB 575 556 482 481 499 503 506 KESB 519 485 579 528 507 449 545 KIUB 623 654 623 661 652 559 623 KOLB 477 579 593 446 574 569 548 KRUB 394 394 458 395 436 462 511 LICB 450 413 409 352 420 373 392 MAHB 0 0 0 0 0 187 385 MALB 456 441 436 456 445 339 447 MANB o 440 456 424 360 343 480 464 MATB 440 347 437 493 414 359 350 METB 690 700 723 725 813 814 798 MIAB 563 503 501 422 445 528 471 MONB 568 563 509 546 596 554 542 MORB 458 539 432 373 439 415 453 MSPB 589 518 568 461 491 470 566 NOWB 427 221 333 327 309 458 379 PAQB 496 534 425 427 513 447 469 PDMB 523 487 447 463 383 408 505 REUB 271 358 348 366 410 381 358 REZB 817 694 743 687 664 641 730 RIPB 622 635 599 598 652 622 588 ROTB 1360 1255 1293 1013 1132 1098 1149 SALB 487 436 446 520 469 320 518 SANB 580 570 595 486 559 626 615 SCRB 499 502 517 401 501 0 0 SODB o 437 486 389 404 484 453 416 SPJB 1610 1591 1583 1508 1483 1171 1439 SYPB 1340 1393 1331 1198 1306 1296 1377 THUB 1282 1338 1258 1173 1472 1280 1088 TLHA 591 559 556 494 511 519 542 TRIB o 485 438 549 496 443 409 516 YASB 545 541 544 412 505 525 534 YELB 888 832 926 800 922 852 855 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 3715 1462 1888 3011 AMTB 1261 655 646 1097 ASDB 866 374 441 741 BEMB 4271 1595 1984 3758 CADB 214 111 212 175 CHAB 1596 803 1140 1308 CICB 1076 623 753 955 CROB 898 440 410 789 EASB 1143 699 849 876 EVEB 501 271 379 710 FAIB 2721 1029 1219 2474 FUTB 1119 423 602 920 GREB 0 84 0 0 HBKB 1269 683 640 1014 HEMB 1052 387 431 838 JIUB 1394 706 804 934 KESB 1364 653 679 1096 KIUB 1526 953 1090 1163 KOLB 1281 691 1037 1013 KRUB 1045 573 702 925 LICB 1080 484 594 817 MAHB 221 69 129 197 MALB 1102 602 692 849 MANB 1066 517 657 949 MATB 1154 337 550 952 METB 2117 678 820 1901 MIAB 1216 516 772 1109 MONB 1314 860 819 1089 MORB 1063 599 734 930 MSPB 1345 652 731 1134 NOWB 932 342 443 900 PAQB 1109 702 887 893 PDMB 1313 548 669 889 REUB 844 434 531 846 REZB 2168 629 653 1721 RIPB 1812 467 692 1535 ROTB 3376 1141 1078 3061 SALB 1249 529 666 956 SANB 1430 755 930 1179 SCRB 889 486 553 631 SODB 1093 561 656 949 SPJB 3782 1642 2007 3353 SYPB 3541 1285 1589 3140 THUB 3240 1413 1709 2842 TLHA 1637 449 599 1248 TRIB 1171 601 779 989 YASB 1370 728 807 985 YELB 2592 779 874 2051 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 18.5 17.5 15.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -8.2 +- 2.6 mm TY = -10.7 +- 2.1 mm TZ = 6.2 +- 2.2 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.7 +- 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 1.55 0.53 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr