****************************************************************************** dorisreport 27-Jun-2006 20:23:19 Message No 0619 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1375 = 06134 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1375 from 14-05-2006 to 20-05-2006 DORIS name (using day of start): 06134 Days of year: from 2006/134 to 2006/140 ============================================================== 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/ign06134wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06134wd04.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 1375 from 14-05-2006 to 20-05-2006 Total number of stations = 45 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.72 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 14-05-2006 21534 44 21490 0.2 15-05-2006 21463 94 21369 0.4 16-05-2006 18310 18 18292 0.1 17-05-2006 19593 46 19547 0.2 18-05-2006 20745 10 20735 0.0 19-05-2006 21226 6 21220 0.0 20-05-2006 20560 48 20512 0.2 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 6083 6046 5700 5521 5887 6054 5804 SPOT2 4253 4049 3981 3899 4012 4044 3948 SPOT4 4468 4571 4408 3943 4295 4391 4074 SPOT5 6686 6703 4203 6184 6541 6731 6686 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.411 0.428 0.410 0.394 0.417 0.392 0.388 SPOT2 0.440 0.439 0.462 0.421 0.416 0.409 0.404 SPOT4 0.408 0.423 0.445 0.416 0.465 0.420 0.434 SPOT5 0.381 0.374 0.389 0.353 0.354 0.355 0.358 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 1429 1487 1405 1424 1506 1390 1385 AMTB 497 473 465 478 494 404 487 ASDB 333 339 238 365 316 372 328 BEMB 1524 1459 0 131 1676 1549 1651 CADB 551 584 423 510 519 473 555 CHAB 713 698 687 671 723 639 645 CROB 403 330 339 297 377 329 349 EASB 447 370 481 550 424 448 391 EVEB 232 265 227 248 273 237 232 FAIB o 997 1036 1089 1053 1014 1028 1025 FUTB 483 412 423 469 457 454 463 GAVB 300 312 325 271 325 343 286 GREB 505 480 575 540 522 474 501 HEMB 344 366 421 417 312 392 354 JIUB 481 368 456 496 523 554 587 KESB 502 481 575 550 486 577 526 KIUB 612 608 569 298 295 606 586 KOLB 595 582 485 556 549 516 538 KRUB 468 469 456 459 376 489 382 LICB 375 384 398 332 418 458 434 MAHB 417 408 375 412 362 388 413 MALB 377 433 476 444 410 476 411 MANB o 473 495 468 437 479 462 439 MATB 399 465 458 411 520 487 423 METB 744 756 765 735 766 749 781 MIAB 395 512 438 354 461 487 447 MONB 553 535 527 573 540 559 577 MORB 503 426 449 549 442 451 562 MSPB 534 541 590 562 555 511 575 PAQB 577 564 475 269 0 0 0 PDMB 446 490 562 453 475 509 449 REUB 390 358 356 354 379 382 326 REZB 692 644 755 664 651 720 658 RIPB 657 625 591 634 579 691 642 ROTB 1153 1121 1167 1076 1042 1074 1102 SALB 416 446 397 471 358 446 402 SANB 571 594 556 549 606 575 610 SCRB 501 448 502 528 417 466 527 SODB o 504 419 437 470 467 447 454 STJB 560 603 627 526 634 623 553 SYPB 1305 1356 1418 1355 1402 1346 1343 TLHA 624 585 632 499 519 582 538 TRIB o 441 486 502 448 576 511 474 YASB 429 621 613 545 569 575 540 YELB 822 792 708 827 789 812 832 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 3831 1668 1694 3123 AMTB 1200 607 598 1088 ASDB 864 404 460 751 BEMB 3183 1291 1371 2562 CADB 1271 689 833 1018 CHAB 1597 990 1095 1339 CROB 921 464 444 718 EASB 1036 681 857 879 EVEB 487 344 303 639 FAIB 2896 996 1226 2425 FUTB 1188 614 638 931 GAVB 1312 0 0 994 GREB 1355 556 732 1149 HEMB 987 536 440 815 JIUB 1422 728 740 900 KESB 1388 618 683 1197 KIUB 1254 840 863 985 KOLB 1315 685 1014 1055 KRUB 1095 594 651 942 LICB 1055 572 548 829 MAHB 1068 401 578 947 MALB 1018 679 637 889 MANB 1128 609 747 971 MATB 1200 501 562 1093 METB 2028 733 900 1864 MIAB 1136 568 538 1057 MONB 1323 844 828 1069 MORB 1153 708 814 909 MSPB 1368 756 817 1105 PAQB 632 413 486 472 PDMB 1241 625 666 1047 REUB 967 472 413 885 REZB 2055 573 608 1715 RIPB 1867 516 614 1584 ROTB 3258 829 779 3138 SALB 1150 664 589 768 SANB 1391 847 867 1204 SCRB 1227 741 722 917 SODB 1212 565 658 964 STJB 1484 764 834 1249 SYPB 3543 1551 1604 3112 TLHA 1565 559 764 1248 TRIB 1145 765 744 992 YASB 1274 804 974 1073 YELB 1927 785 870 2163 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 15.4 14.0 15.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -27.1 +- 2.0 mm TY = 24.0 +- 2.0 mm TZ = 32.1 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.0 +- 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) ------------------------------------------------------------------ 7 1.19 0.66 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