****************************************************************************** dorisreport 16-Mar-2006 13:27:59 Message No 0530 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1361 = 06036 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1361 from 05-02-2006 to 11-02-2006 DORIS name (using day of start): 06036 Days of year: from 2006/36 to 2006/42 ============================================================== 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/ign06036wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06036wd04.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 1361 from 05-02-2006 to 11-02-2006 Total number of stations = 49 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.27 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 05-02-2006 24713 9 24704 0.0 06-02-2006 24323 13 24310 0.1 07-02-2006 24281 28 24253 0.1 08-02-2006 24330 15 24315 0.1 09-02-2006 19069 14 19055 0.1 10-02-2006 19273 7 19266 0.0 11-02-2006 24873 11 24862 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 6912 6746 6786 6897 6644 6272 7060 SPOT2 4785 4988 4942 4847 0 0 4970 SPOT4 5296 5193 5060 5014 4954 5269 5305 SPOT5 7711 7383 7465 7557 7457 7725 7527 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.426 0.393 0.403 0.394 0.395 0.393 0.405 SPOT2 0.410 0.415 0.430 0.434 0.000 0.000 0.396 SPOT4 0.409 0.413 0.409 0.435 0.436 0.429 0.413 SPOT5 0.375 0.345 0.359 0.353 0.372 0.364 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 1383 1368 1386 1410 1329 1337 1453 AMTB 441 509 443 488 454 413 533 ASDB 372 264 301 296 321 275 296 BEMB 1583 1631 1574 1730 1614 1510 1588 CADB 530 504 451 527 513 539 565 CHAB 689 701 716 679 702 676 708 CICB 522 451 463 443 443 435 516 CROB 354 337 330 332 328 345 327 EASB 405 452 485 459 514 499 443 EVEB 259 285 293 275 260 205 247 FAIB o 1037 933 1106 1014 1012 1034 1002 FUTB 408 428 471 445 348 392 396 GREB 473 511 511 511 431 448 556 HBKB 541 430 527 559 498 530 538 HEMB 301 385 408 291 356 373 333 JIUB 583 519 467 559 520 545 550 KESB 510 551 580 506 545 442 501 KIUB 636 631 636 649 617 632 644 KOLB 587 531 543 553 509 525 596 KRUB 370 423 398 389 402 445 437 LICB 391 418 406 469 511 405 440 MAHB 235 387 371 299 374 397 423 MALB 428 446 428 445 480 186 457 MANB o 490 392 278 490 413 471 512 MATB 451 449 443 479 454 420 400 METB 808 832 755 798 785 797 758 MIAB 528 431 428 466 515 360 485 MONB 531 531 573 535 562 596 520 MORB 443 461 504 434 359 480 506 MSPB 562 524 587 578 500 564 562 NOWB 497 306 280 352 352 400 337 PAQB 555 526 506 566 549 574 561 PDMB 498 463 448 463 490 457 490 REUB 326 371 390 362 371 287 405 REZB 739 652 662 727 765 784 712 RIPB 612 668 573 546 623 547 568 ROTB 1185 1071 1124 1185 1126 1151 1150 SALB 382 411 469 410 478 437 331 SANB 638 601 553 614 590 531 580 SCRB 481 508 510 482 511 461 476 SODB o 424 214 455 494 249 473 463 SPJB 1363 1512 1411 1493 1463 1491 1453 STJB 541 669 597 660 637 585 597 SYPB 1357 1375 1320 724 489 1266 1440 THUB 1355 1196 1393 1212 1302 1350 1295 TLHA 622 563 560 568 574 630 590 TRIB o 486 514 485 539 554 429 434 YASB 533 563 506 554 540 483 531 YELB 880 846 880 861 853 853 870 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 3773 1568 1670 2938 AMTB 1290 596 608 1013 ASDB 733 385 471 699 BEMB 4271 1797 1804 3762 CADB 1216 791 823 1029 CHAB 1662 1129 1072 1281 CICB 1134 687 767 921 CROB 893 456 380 740 EASB 1092 824 859 826 EVEB 485 315 362 727 FAIB 2767 1002 1169 2491 FUTB 1083 578 663 801 GREB 1232 535 612 1222 HBKB 1346 755 727 995 HEMB 984 379 403 848 JIUB 1317 834 823 998 KESB 1268 706 719 1160 KIUB 1493 1045 1091 1172 KOLB 1338 755 1011 1006 KRUB 1028 609 603 841 LICB 1079 705 598 862 MAHB 945 375 522 830 MALB 997 592 618 859 MANB 1269 548 631 802 MATB 1223 476 592 993 METB 2223 697 922 1906 MIAB 1100 606 607 1082 MONB 1278 834 819 1091 MORB 1081 641 759 902 MSPB 1313 818 811 1148 NOWB 978 419 394 893 PAQB 1252 894 960 974 PDMB 1133 639 634 1118 REUB 923 501 441 819 REZB 2096 651 737 1745 RIPB 1821 462 504 1520 ROTB 3337 888 960 3085 SALB 1094 647 530 893 SANB 1364 868 977 1162 SCRB 1137 731 857 880 SODB 1056 531 518 841 SPJB 3739 1602 1762 3367 STJB 1516 846 776 1355 SYPB 2912 1272 1312 2726 THUB 3213 1590 1755 2822 TLHA 1677 632 751 1223 TRIB 1179 720 745 1012 YASB 1250 798 745 1169 YELB 2492 776 901 2099 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 17.0 20.6 15.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -20.9 +- 1.8 mm TY = 22.8 +- 1.7 mm TZ = 25.5 +- 1.7 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 0.72 0.66 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr