****************************************************************************** dorisreport 31-Aug-2006 21:29:46 Message No 0671 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1385 = 06204 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1385 from 23-07-2006 to 29-07-2006 DORIS name (using day of start): 06204 Days of year: from 2006/204 to 2006/210 ============================================================== 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/ign06204wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06204wd04.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 1385 from 23-07-2006 to 29-07-2006 Total number of stations = 49 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.83 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 23-07-2006 20578 8 20570 0.0 24-07-2006 22063 56 22007 0.3 25-07-2006 23033 83 22950 0.4 26-07-2006 23125 16 23109 0.1 27-07-2006 23548 53 23495 0.2 28-07-2006 23509 24 23485 0.1 29-07-2006 23311 15 23296 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 5475 6170 6442 6408 6520 6485 6434 SPOT2 4276 4569 4517 4624 4706 4755 4758 SPOT4 4420 4473 4790 4754 5093 5118 4855 SPOT5 6399 6795 7201 7323 7176 7127 7249 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.405 0.415 0.424 0.400 0.440 0.442 0.423 SPOT2 0.434 0.437 0.424 0.439 0.414 0.468 0.452 SPOT4 0.435 0.432 0.423 0.406 0.421 0.415 0.413 SPOT5 0.370 0.373 0.371 0.362 0.377 0.369 0.368 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 1409 1395 1388 1407 1523 1411 1440 AMTB 393 446 437 517 521 479 483 ASDB 317 328 338 374 327 348 360 BEMB 0 59 796 837 840 794 834 CADB 0 263 491 582 578 427 445 CHAB 618 726 705 675 763 712 689 CICB 493 413 422 451 485 438 493 CROB 0 0 0 285 365 298 299 DIOB 366 485 479 482 445 377 459 DJIB 454 474 475 463 457 439 479 EASB 484 502 565 509 407 526 542 EVEB 224 295 228 223 255 278 222 FAIB o 961 1022 1017 942 1070 1016 1082 FUTB 416 434 404 494 421 422 482 GAVB 218 223 226 237 209 212 200 GREB 499 434 432 564 518 463 467 HBKB 510 501 541 548 448 441 508 HEMB 341 380 377 300 365 427 412 KESB 578 551 564 530 516 577 567 KIUB 564 572 570 618 564 601 605 KOLB 513 529 513 563 581 565 572 KRUB 392 476 456 407 488 416 455 LICB 489 415 470 419 426 436 366 MAHB 173 369 344 411 385 225 386 MALB 447 379 416 305 394 435 412 MANB o 458 448 433 452 452 458 317 MATB 381 430 444 416 483 501 439 METB 662 697 700 731 732 728 663 MIAB 445 449 453 426 514 407 353 MONB 510 546 580 553 513 504 592 MORB 531 474 379 533 448 461 547 MSPB 580 547 529 484 569 617 532 PAQB 448 527 528 539 492 528 545 PDMB 420 458 457 455 512 565 370 REUB 379 362 371 372 379 344 352 REZB 743 645 765 667 612 728 635 RIPB 556 650 567 687 646 624 661 ROTB 1182 1113 1092 1130 1053 1104 1027 SALB 424 486 556 372 420 501 506 SANB 604 533 560 631 613 560 542 SCRB 541 459 516 527 451 497 494 SODB o 459 290 0 0 467 386 445 SPJB 1373 1454 1513 1492 1574 1544 1486 SYPB 1286 1335 1338 1323 1340 1393 1320 THUB 0 898 1382 1345 1299 1398 1368 TLHA 574 481 473 535 612 561 480 TRIB o 473 581 500 459 541 529 459 YASB 475 569 542 442 576 635 449 YELB 747 827 747 419 0 297 803 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 3768 1632 1743 3121 AMTB 1219 582 566 1104 ASDB 885 441 418 836 BEMB 1421 591 853 1439 CADB 967 596 610 778 CHAB 1533 1141 1143 1331 CICB 1065 727 695 890 CROB 483 206 196 421 DIOB 880 860 783 767 DJIB 1094 701 727 904 EASB 1120 853 970 1017 EVEB 483 363 362 571 FAIB 2759 1045 1107 2533 FUTB 1126 642 566 976 GAVB 888 0 0 741 GREB 1331 669 585 1019 HBKB 1342 663 668 1015 HEMB 1046 427 412 894 KESB 1376 763 791 1162 KIUB 1336 1022 959 1152 KOLB 1252 942 968 954 KRUB 1048 637 713 848 LICB 1038 587 656 882 MAHB 894 395 393 775 MALB 994 636 688 693 MANB 1084 622 573 933 MATB 1117 510 587 1053 METB 1799 746 832 1778 MIAB 1122 551 609 944 MONB 1340 761 799 1122 MORB 1177 724 719 954 MSPB 1377 723 847 1106 PAQB 1130 910 874 969 PDMB 1181 576 633 1042 REUB 889 506 503 830 REZB 2063 560 673 1712 RIPB 1839 599 606 1510 ROTB 3376 725 799 3073 SALB 1169 591 714 1000 SANB 1391 904 908 1082 SCRB 1230 743 700 972 SODB 866 413 390 523 SPJB 3858 1730 1733 3436 SYPB 3573 1517 1468 3081 THUB 2723 1314 1387 2477 TLHA 1561 468 604 1286 TRIB 1136 775 859 999 YASB 1260 775 885 998 YELB 1226 568 633 1530 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 16.1 19.7 18.0 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -30.2 +- 1.8 mm TY = 19.3 +- 1.8 mm TZ = 29.6 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.4 +- 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 1.35 1.63 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr