****************************************************************************** dorisreport 26-Oct-2006 01:51:29 Message No 0716 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1393 = 06260 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1393 from 17-09-2006 to 23-09-2006 DORIS name (using day of start): 06260 Days of year: from 2006/260 to 2006/266 ============================================================== 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/ign06260wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06260wd04.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 1393 from 17-09-2006 to 23-09-2006 Total number of stations = 50 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.66 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 17-09-2006 21490 23 21467 0.1 18-09-2006 20890 11 20879 0.1 19-09-2006 20917 12 20905 0.1 20-09-2006 21234 24 21210 0.1 21-09-2006 21524 15 21509 0.1 22-09-2006 22089 20 22069 0.1 23-09-2006 22827 60 22767 0.3 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 4830 4553 4812 4841 4792 5183 6396 SPOT2 4798 4808 4562 4545 4520 4581 4281 SPOT4 5026 4875 4711 4738 4947 5042 4993 SPOT5 6813 6643 6820 7086 7250 7263 7097 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.404 0.401 0.385 0.408 0.398 0.406 0.419 SPOT2 0.403 0.413 0.414 0.403 0.431 0.416 0.430 SPOT4 0.428 0.410 0.416 0.412 0.416 0.410 0.400 SPOT5 0.364 0.360 0.357 0.361 0.368 0.365 0.363 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 1359 1260 1369 1322 1230 1396 1410 AMTB 0 0 0 225 450 454 458 ARFB 425 380 414 350 429 444 355 ASDB 320 278 341 325 323 370 326 CADB 356 276 334 319 327 363 362 CHAB 564 580 538 600 598 592 575 CICB 441 437 466 418 441 462 417 CROB 242 205 199 172 234 233 322 DIOB 471 491 567 403 446 394 457 DJIB 422 425 472 424 453 439 431 EASB 440 446 457 538 434 437 527 EVEB 261 268 295 288 223 268 236 FAIB o 1017 1055 973 999 983 1017 995 FUTB 339 395 384 404 447 413 367 GAVB 60 104 102 233 231 243 259 GREB 501 504 455 509 458 487 536 HBKB 281 92 0 0 0 0 0 HEMB 403 348 382 388 319 301 406 JIUB 359 381 369 334 326 351 493 KIUB 513 506 588 558 617 579 588 KOLB 488 565 466 484 519 599 510 KRUB 440 419 460 356 423 471 450 LICB 339 395 263 363 447 401 396 MAHB 349 186 368 349 374 361 324 MALB 285 320 303 302 269 288 445 MANB o 88 95 91 407 391 482 456 MATB 303 300 362 314 271 308 429 METB 748 748 726 706 686 695 679 MIAB 314 285 242 213 312 274 415 MONB 368 350 396 383 366 380 504 MORB 447 519 446 424 535 524 470 NOWB 249 298 286 239 265 380 447 PAQB 457 534 449 447 476 444 473 PDMB 557 476 456 497 438 474 536 REUB 357 384 369 385 396 391 352 REZB 361 389 362 326 463 480 769 RIPB 655 590 645 637 639 679 720 ROTB 909 911 906 872 877 890 1448 SALB 156 0 0 0 0 0 0 SANB 506 495 496 410 456 553 524 SCRB 279 296 304 259 334 268 477 SODB o 400 423 413 435 425 424 438 SPJB 952 977 986 1009 899 1017 1480 STJB 611 548 563 646 591 542 591 SYPB 1361 1353 1427 1355 1325 1357 1485 THUB 1374 1364 1294 1451 1304 1237 1287 TLHA 593 516 474 512 564 594 547 TRIB o 455 480 490 472 453 458 568 YASB 411 435 356 391 322 390 556 YELB 768 820 791 793 827 789 833 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 3121 1580 1682 3251 AMTB 543 278 361 498 ARFB 1201 368 552 877 ASDB 830 367 492 767 CADB 107 711 810 819 CHAB 1093 760 1020 1290 CICB 915 697 734 910 CROB 125 383 368 795 DIOB 1117 739 694 846 DJIB 910 713 719 890 EASB 998 837 875 950 EVEB 584 307 413 599 FAIB 2449 1115 1243 2495 FUTB 950 604 536 827 GAVB 581 0 0 738 GREB 1160 540 748 1177 HBKB 134 115 140 0 HEMB 879 490 452 861 JIUB 168 827 801 997 KIUB 1165 993 995 1111 KOLB 985 881 1010 965 KRUB 870 671 643 979 LICB 1002 544 445 828 MAHB 813 411 400 817 MALB 148 645 727 823 MANB 641 639 380 494 MATB 144 551 622 1077 METB 1830 740 859 1760 MIAB 157 413 564 1032 MONB 171 856 812 1046 MORB 979 836 836 923 NOWB 222 503 593 993 PAQB 867 863 889 863 PDMB 1168 664 667 1127 REUB 954 469 512 832 REZB 360 628 562 1674 RIPB 1730 598 614 1784 ROTB 558 1515 1641 3275 SALB 88 38 0 38 SANB 1129 716 676 1087 SCRB 155 645 640 886 SODB 975 579 636 932 SPJB 557 1711 1827 3391 STJB 1360 773 903 1265 SYPB 3286 1691 1786 3187 THUB 3500 1688 1564 2798 TLHA 1570 515 606 1280 TRIB 1014 664 837 1062 YASB 223 781 928 1106 YELB 1994 838 904 2060 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 12.9 14.6 15.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -10.9 +- 2.4 mm TY = 17.7 +- 2.5 mm TZ = 42.4 +- 2.2 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) ------------------------------------------------------------------ 7 1.09 0.97 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/xAgEdtedzpPcohtw78djyfqBtD49vSyxKhAsicbWn3+YhXI1z0!DgzPFqAbZVU9nuakw+MkUjFSGl6FmH36lDg== si ce message est indésirable (pourriel). 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