****************************************************************************** dorisreport 26-Jan-2006 18:08:03 Message No 0487 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1354 = 05352 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1354 from 18-12-2005 to 24-12-2005 DORIS name (using day of start): 05352 Days of year: from 2005/352 to 2005/358 ============================================================== 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/ign05352wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05352wd04.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 1354 from 18-12-2005 to 24-12-2005 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 -------------------------------------------------------- 18-12-2005 23746 19 23727 0.1 19-12-2005 24500 8 24492 0.0 20-12-2005 24447 9 24438 0.0 21-12-2005 23813 15 23798 0.1 22-12-2005 24102 10 24092 0.0 23-12-2005 23764 18 23746 0.1 24-12-2005 23400 18 23382 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 6518 6897 6661 6430 6735 6509 6539 SPOT2 4734 5048 4902 4965 4955 4860 4760 SPOT4 5130 5145 5292 5225 5193 5025 4892 SPOT5 7345 7402 7583 7178 7209 7352 7191 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.396 0.401 0.402 0.389 0.385 0.382 0.378 SPOT2 0.411 0.443 0.443 0.412 0.398 0.412 0.409 SPOT4 0.423 0.406 0.414 0.409 0.420 0.409 0.407 SPOT5 0.354 0.353 0.355 0.351 0.339 0.347 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 1503 1535 1486 1444 1594 1449 1531 AMTB 475 415 507 516 465 496 455 ASDB 266 301 356 117 0 0 0 BEMB 1625 1739 1693 1595 1693 1810 1684 CADB 359 500 524 497 532 350 183 CHAB 534 599 561 714 627 680 683 CICB 457 527 459 482 503 459 483 CROB 379 353 350 367 338 323 332 EASB 465 407 498 498 473 449 440 EVEB 232 269 249 248 247 280 252 FAIB o 1114 1104 1039 1085 1107 1014 1110 FUTB 443 444 384 370 418 377 454 HBKB 452 572 456 531 538 497 530 HEMB 345 313 388 385 317 365 382 JIUB 575 582 509 560 557 487 545 KESB 551 500 561 525 524 555 525 KIUB 661 628 614 602 613 635 642 KOLB 428 539 530 535 587 512 465 KRUB 349 378 400 349 324 287 332 LICB 420 512 482 154 441 418 467 MALB 517 507 472 495 443 507 525 MANB o 469 435 469 473 440 472 440 MATB 410 461 412 392 437 475 476 METB 719 692 692 776 702 778 705 MIAB 495 529 585 531 581 567 453 MONB 585 561 535 588 503 547 593 MORB 486 415 449 471 526 464 370 MSPB 559 541 558 507 612 429 523 NOWB 250 415 465 244 372 373 334 PAQB 549 548 539 518 533 540 542 PDMB 461 436 470 502 324 297 449 REUB 461 486 380 440 435 433 412 REZB 829 744 751 689 768 571 665 RIPB 613 666 649 634 584 750 573 ROTB 1337 1287 1381 1326 1331 1068 1289 SALB 445 441 496 463 394 497 472 SANB 482 524 618 538 572 548 515 SCRB 492 505 383 459 533 429 507 SODB o 474 497 437 436 433 444 431 SPJB 1558 1507 1589 1592 1560 1646 1449 STJB 706 611 657 687 617 738 655 SYPB 1362 1382 1324 1431 1385 1385 1305 THUB 1364 1382 1234 1381 1336 1355 1398 TLHA 512 554 598 473 541 541 485 TRIB o 494 485 570 440 479 577 463 YASB 328 524 576 546 471 567 545 YELB 867 868 867 911 913 930 890 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 2017 2142 2900 AMTB 1290 534 594 1131 ASDB 358 179 178 406 BEMB 4375 2072 2156 3816 CADB 1064 671 555 857 CHAB 1651 917 892 1249 CICB 1214 650 704 997 CROB 847 514 443 745 EASB 1084 828 797 907 EVEB 520 400 329 599 FAIB 2894 1132 1280 2548 FUTB 1108 446 560 990 HBKB 1249 736 694 1115 HEMB 1042 351 465 835 JIUB 1360 740 823 1131 KESB 1385 797 699 1062 KIUB 1482 989 1041 1240 KOLB 1279 688 859 1015 KRUB 893 460 618 662 LICB 981 611 626 847 MALB 1163 801 825 946 MANB 1224 567 640 949 MATB 1121 464 621 1016 METB 1971 708 786 1809 MIAB 1258 835 833 1027 MONB 1367 774 855 1117 MORB 1123 621 727 943 MSPB 1301 748 772 1099 NOWB 1023 395 461 732 PAQB 1252 890 891 1010 PDMB 1227 522 618 803 REUB 1008 605 694 950 REZB 2070 806 722 1640 RIPB 1810 643 810 1444 ROTB 3411 1522 1411 3061 SALB 1173 669 731 857 SANB 1324 844 723 1133 SCRB 1091 709 784 889 SODB 1185 554 580 1032 SPJB 3821 1910 2311 3398 STJB 1597 977 919 1395 SYPB 3583 1554 1569 3178 THUB 3376 1787 1709 2998 TLHA 1576 568 551 1176 TRIB 1159 761 823 978 YASB 1234 805 775 997 YELB 2574 885 891 2127 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 14.5 19.0 14.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -13.4 +- 1.8 mm TY = -1.4 +- 1.8 mm TZ = 45.9 +- 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 0.91 0.43 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr