****************************************************************************** dorisreport 02-Apr-2007 07:02:28 Message No 0836 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1414 = 07042 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1412 from 28-01-2007 to 03-02-2007 DORIS name (using day of start): 07028 Days of year: from 2007/28 to 2007/34 ============================================================== 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/ign07028wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07028wd04.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. Week 1405 = 06344 : Use GIPSY/OASIS software installed at Institut de Physique du Globe de Paris 4) Global Statistics ==================== GPS week number 1412 from 28-01-2007 to 03-02-2007 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.90 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 28-01-2007 22716 9 22707 0.0 29-01-2007 22651 8 22643 0.0 30-01-2007 22611 4 22607 0.0 31-01-2007 21442 5 21437 0.0 01-02-2007 22429 8 22421 0.0 02-02-2007 22368 11 22357 0.0 03-02-2007 19990 2 19988 0.0 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 6304 6318 6230 5096 6300 6174 6371 SPOT2 4419 4485 4328 4452 4306 4242 1556 SPOT4 4880 4765 4920 4917 4842 4856 5007 SPOT5 7104 7075 7129 6972 6973 7085 7054 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.375 0.395 0.405 0.425 0.414 0.402 0.392 SPOT2 0.417 0.418 0.429 0.431 0.430 0.444 0.424 SPOT4 0.420 0.418 0.411 0.420 0.400 0.407 0.405 SPOT5 0.359 0.371 0.358 0.377 0.376 0.360 0.361 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 1405 1366 1522 1407 1445 1423 1255 AMTB 642 591 612 472 566 606 496 ARFB 407 378 415 391 359 453 438 ASDB 377 309 340 376 329 279 305 BETB 439 430 436 403 435 428 338 CADB 442 431 477 422 411 449 455 CICB 428 454 570 439 431 458 410 CROB 455 482 493 382 513 485 518 DIOB 487 473 469 452 448 503 409 DJIB 473 495 456 402 451 528 425 EVEB 302 250 249 253 308 237 253 FAIB o 1037 1065 1081 963 1064 1041 960 FUTB 374 464 407 371 473 465 377 GAVB 241 233 254 221 218 124 251 GREB 518 521 532 545 557 527 438 HEMB 316 425 353 312 474 385 280 JIUB 497 620 562 496 526 573 531 KIUB 604 667 646 550 631 662 574 KOLB 560 473 661 546 445 582 500 KRUB 0 0 0 256 443 320 353 LICB 505 463 463 384 393 391 370 MAHB 344 387 386 329 368 432 378 MANB o 479 476 537 453 467 469 447 MATB 516 564 565 550 611 608 439 METB 706 740 708 656 733 704 647 MIAB 452 460 500 454 411 460 450 MONB 569 599 557 446 591 535 485 MORB 407 435 525 456 485 521 383 MSPB 492 530 655 577 588 596 367 NOWB 395 370 423 349 275 396 312 PAQB 466 243 0 0 0 0 0 REUB 412 416 437 372 381 391 418 REZB 714 844 701 727 717 680 586 RIKB 523 500 486 464 442 484 421 RIPB 712 719 753 604 664 675 677 ROTB 1420 1418 1433 1238 1326 1382 1190 SALB 515 443 477 495 518 448 400 SANB 506 494 569 411 464 525 493 SCRB 432 541 434 392 535 426 399 SODB o 78 77 91 121 92 91 36 SPJB 1573 1459 1502 1423 1559 1512 1349 STJB 732 734 629 723 709 729 643 SYPB 1452 1466 1376 1383 1504 1487 1408 THUB 1373 1389 1315 1273 1379 1410 1221 TLHA 534 637 621 619 597 614 484 TRIB o 638 475 459 640 540 515 469 YASB 555 498 532 593 577 425 506 YELB 895 939 914 743 881 924 853 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 3879 1351 1692 3171 AMTB 1244 759 902 1208 ARFB 937 483 576 974 ASDB 820 409 502 751 BETB 1012 511 701 855 CADB 1056 446 804 910 CICB 1048 616 726 973 CROB 1216 543 616 1075 DIOB 867 760 792 904 DJIB 1021 617 786 939 EVEB 471 380 383 701 FAIB 2788 976 1188 2576 FUTB 1121 439 594 973 GAVB 834 0 0 779 GREB 1373 469 743 1142 HEMB 981 368 483 837 JIUB 1322 649 835 1167 KIUB 1317 971 1096 1271 KOLB 1283 781 923 1018 KRUB 559 204 301 449 LICB 1041 556 623 928 MAHB 1041 389 478 912 MANB 1226 535 667 1009 MATB 1268 748 805 1167 METB 1837 616 851 1778 MIAB 1157 633 521 1005 MONB 1182 672 911 1115 MORB 1092 506 803 945 MSPB 1414 643 759 1128 NOWB 1027 352 439 837 PAQB 235 136 129 257 REUB 959 436 601 970 REZB 2243 540 560 1807 RIKB 1154 686 731 947 RIPB 2036 505 663 1777 ROTB 3699 1066 1633 3270 SALB 1163 618 835 936 SANB 1184 542 701 1173 SCRB 1023 585 686 971 SODB 0 600 0 0 SPJB 3776 1396 1837 3613 STJB 1626 927 1140 1349 SYPB 3743 1491 1891 3224 THUB 3204 1426 1842 3186 TLHA 1684 536 735 1292 TRIB 1255 793 892 1017 YASB 1235 795 816 1073 YELB 2456 760 941 2201 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 16.3 15.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -17.8 +- 2.4 mm TY = 7.1 +- 2.4 mm TZ = 5.4 +- 2.1 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.4 +- 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 1.32 0.49 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/hMCvmp89SNdfIRxaTzAjUfFc38zryi6Rtwdp03tULsnzJVgFLJkhpL8TmGEPFkBGPgRf6vyHZak6xLSdRC2YtaNEsXjQzkHFdAzFhUKHWXW8BMrsjsqyvU2fjZDyw7HBLpBErKSal3IyG5t9sFuWZRU2uNokP2Y15!XgYQR5SOeS!u3IoLKuNKm3tltYcU8oJwNS+KvV4RqHi5NktmI2KPTYDfPBs7kk si ce message est indésirable (pourriel). 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