****************************************************************************** dorisreport 28-Nov-2006 23:46:23 Message No 0743 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1398 = 06295 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1398 from 22-10-2006 to 28-10-2006 DORIS name (using day of start): 06295 Days of year: from 2006/295 to 2006/301 ============================================================== 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/ign06295wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06295wd04.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 1398 from 22-10-2006 to 28-10-2006 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.73 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 22-10-2006 22574 16 22558 0.1 23-10-2006 22163 14 22149 0.1 24-10-2006 21950 16 21934 0.1 25-10-2006 21633 10 21623 0.0 26-10-2006 21597 3 21594 0.0 27-10-2006 21834 26 21808 0.1 28-10-2006 21532 13 21519 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 6413 5810 6280 6042 6011 6142 6102 SPOT2 4290 4404 4360 4369 4231 4198 4072 SPOT4 4920 4860 4691 4571 4601 4551 4427 SPOT5 6935 7075 6603 6641 6751 6917 6918 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.402 0.405 0.407 0.408 0.407 0.405 0.395 SPOT2 0.417 0.401 0.417 0.398 0.418 0.431 0.433 SPOT4 0.428 0.404 0.410 0.403 0.405 0.409 0.421 SPOT5 0.351 0.363 0.354 0.377 0.358 0.364 0.357 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 1380 1347 1499 1447 1399 1405 1402 AMTB 537 535 539 539 562 528 538 ARFB 411 424 419 326 423 386 407 ASDB 367 295 269 348 328 362 361 CADB 440 470 497 452 364 493 458 CHAB 520 503 513 543 497 541 506 CICB 448 462 507 450 468 457 436 CROB 438 396 436 470 529 472 460 DIOB 446 386 397 442 411 438 457 DJIB 361 401 427 473 483 481 447 EVEB 219 236 291 318 247 272 245 FAIB o 1011 997 1061 1046 973 1052 1030 FUTB 463 363 387 425 353 424 262 GAVB 248 253 266 201 186 246 261 GREB 502 524 545 527 523 414 501 HEMB 374 307 324 461 375 299 375 JIUB 542 621 59 0 0 0 0 KIUB 643 629 630 531 618 621 556 KOLB 511 584 627 528 511 601 591 KRUB 378 339 330 396 406 447 276 LICB 432 413 369 336 378 463 431 MAHB 179 413 370 337 334 392 343 MALB 461 384 464 434 454 466 416 MATB 507 510 534 551 531 499 561 METB 720 728 723 706 712 725 693 MIAB 452 451 455 385 438 467 516 MONB 586 542 520 526 593 559 534 MORB 417 458 435 332 387 281 395 NOWB 340 358 434 323 410 419 458 PAQB 448 455 438 443 446 482 391 PDMB 585 373 461 561 394 485 544 REUB 408 414 436 353 444 404 316 REZB 651 548 693 699 758 700 759 RIKB 169 392 0 0 233 231 0 RIPB 745 739 691 663 622 731 749 ROTB 1415 1419 1386 1381 1451 1387 1412 SANB 497 546 554 512 486 502 541 SCRB 438 469 473 502 495 446 437 SODB o 453 466 0 0 0 0 0 SPJB 1594 1473 1495 1519 1495 1378 1433 STJB 612 588 621 666 626 555 636 SYPB 1525 1435 1514 1496 1497 1406 1407 THUB 1409 1246 1341 1342 1273 1376 1303 TLHA 500 494 502 494 534 546 592 TRIB o 505 384 495 535 484 459 561 YASB 553 533 563 626 490 522 556 YELB 930 861 870 865 878 927 859 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 3713 1625 1711 3127 AMTB 1410 549 877 1177 ARFB 1057 473 465 964 ASDB 849 364 535 763 CADB 1030 682 660 1001 CHAB 1007 674 925 1116 CICB 1083 653 792 941 CROB 1324 446 610 1009 DIOB 925 765 705 760 DJIB 1075 672 710 838 EVEB 515 354 319 708 FAIB 2692 1087 1201 2470 FUTB 1037 460 514 864 GAVB 949 0 0 832 GREB 1361 550 625 1190 HEMB 1001 462 425 803 JIUB 463 253 367 232 KIUB 1390 966 1038 1202 KOLB 1235 876 1013 1078 KRUB 992 552 516 720 LICB 1026 528 641 845 MAHB 936 367 372 853 MALB 1016 690 686 888 MATB 1365 649 780 1103 METB 1836 779 856 1746 MIAB 1217 617 506 1033 MONB 1306 812 849 1063 MORB 1100 560 657 630 NOWB 1082 342 480 1008 PAQB 1116 546 634 1035 PDMB 1276 525 814 1016 REUB 1048 488 517 910 REZB 2089 611 678 1594 RIKB 506 207 155 237 RIPB 2185 588 608 1738 ROTB 3771 1509 1609 3275 SANB 1322 607 741 1197 SCRB 1185 662 682 906 SODB 330 154 220 288 SPJB 3830 1649 1789 3408 STJB 1481 856 885 1309 SYPB 3775 1755 1840 3228 THUB 3152 1694 1749 2946 TLHA 1490 550 613 1168 TRIB 1094 754 728 1043 YASB 1417 797 797 1126 YELB 2578 806 888 2141 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 13.5 16.5 15.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -18.0 +- 2.2 mm TY = 7.5 +- 2.3 mm TZ = 37.0 +- 2.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.0 +- 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) 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