****************************************************************************** dorisreport 01-May-2007 04:08:21 Message No 0863 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1420 = 07084 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1420 from 25-03-2007 to 31-03-2007 DORIS name (using day of start): 07084 Days of year: from 2007/84 to 2007/90 ============================================================== 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/ign07084wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07084wd04.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 1420 from 25-03-2007 to 31-03-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.85 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 25-03-2007 24062 5 24057 0.0 26-03-2007 24578 5 24573 0.0 27-03-2007 24584 5 24579 0.0 28-03-2007 24846 12 24834 0.0 29-03-2007 24912 4 24908 0.0 30-03-2007 24933 9 24924 0.0 31-03-2007 24676 40 24636 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 6792 6824 6873 6854 7058 7003 6898 SPOT2 4640 4801 4565 4619 4642 4776 4637 SPOT4 5109 5142 5293 5378 5337 5335 5224 SPOT5 7516 7806 7848 7983 7871 7810 7877 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.403 0.388 0.393 0.401 0.416 0.416 0.399 SPOT2 0.419 0.404 0.425 0.412 0.412 0.416 0.424 SPOT4 0.423 0.423 0.427 0.405 0.413 0.417 0.413 SPOT5 0.361 0.354 0.358 0.364 0.372 0.378 0.365 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 1457 1466 1378 1419 1425 1458 1378 AMTB 601 608 631 605 582 550 610 ARFB 345 420 425 413 427 318 357 ASDB 345 339 343 342 309 362 249 BEMB 1627 1696 1730 1698 1704 1663 1676 BETB 393 440 395 492 392 388 445 CADB 447 523 444 513 551 445 455 CHAB 646 761 773 711 741 743 642 CICB 509 448 443 488 486 463 478 CROB 411 402 341 436 384 493 559 DIOB 404 475 416 405 456 444 494 DJIB 494 481 492 437 360 420 390 EASB 458 458 495 450 468 518 452 EVEB 279 275 248 207 297 284 269 FAIB o 1025 1021 1027 1029 1073 1031 966 FUTB 365 424 462 434 405 402 376 GAVB 216 229 258 252 249 211 193 GREB 514 516 536 527 529 480 550 HBMB 502 493 455 478 430 462 538 KIUB 631 644 625 633 643 651 604 KOLB 575 598 494 555 654 530 577 KRUB 415 439 429 400 471 464 419 LICB 363 431 466 307 341 272 449 MAHB 0 0 199 303 215 286 326 MALB 398 476 420 399 384 459 424 MANB o 489 433 452 468 468 404 396 MATB 590 566 624 517 512 536 511 METB 727 697 670 717 753 714 704 MIAB 388 481 452 479 491 489 430 MONB 571 595 588 572 536 547 561 MORB 563 479 430 542 370 401 506 MSPB 620 519 478 616 565 627 581 NOWB 186 374 279 324 336 294 266 PAQB 462 528 425 483 442 413 468 REUB 391 406 379 402 414 345 389 REZB 671 714 697 721 740 741 780 RIKB 456 387 393 426 424 442 478 RIPB 662 629 690 658 578 574 562 ROTB 1072 1039 1039 1109 1084 1099 1180 SALB 547 539 625 458 427 604 497 SANB 507 455 465 577 566 516 468 SCRB 450 365 454 436 497 425 473 SODB o 448 442 440 476 427 360 454 SPJB 1506 1516 1545 1504 1544 1540 1476 STJB 647 754 786 625 647 731 726 SYPB 1399 1437 1395 1380 1390 1359 1382 THUB 1301 1375 1377 1358 1292 1414 1328 TLHA 624 564 537 599 637 566 561 TRIB o 0 0 0 367 600 556 528 YASB 508 557 545 542 599 651 527 YELB 936 874 914 933 853 904 867 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 3825 1520 1756 3130 AMTB 1370 894 933 1233 ARFB 1041 372 504 926 ASDB 797 438 444 794 BEMB 4682 1637 1887 3938 BETB 1019 628 683 854 CADB 1063 700 759 966 CHAB 1583 1039 1195 1348 CICB 1076 667 707 981 CROB 1240 407 425 1076 DIOB 919 706 736 793 DJIB 1019 589 761 913 EASB 1046 783 807 1015 EVEB 493 371 373 715 FAIB 2813 957 1168 2536 FUTB 1086 432 572 940 GAVB 895 0 0 788 GREB 1369 558 698 1151 HBMB 1132 644 658 1052 KIUB 1503 967 1068 1247 KOLB 1316 861 942 1034 KRUB 1082 578 670 918 LICB 905 546 577 803 MAHB 477 225 210 525 MALB 1012 549 729 867 MANB 1138 585 634 963 MATB 1277 674 896 1139 METB 1859 732 816 1771 MIAB 1165 628 597 973 MONB 1334 728 848 1184 MORB 1138 705 746 956 MSPB 1401 772 780 1184 NOWB 797 309 346 712 PAQB 1185 578 671 960 REUB 995 474 524 877 REZB 2251 562 596 1830 RIKB 1158 454 584 996 RIPB 1888 475 632 1531 ROTB 3215 832 740 3060 SALB 1182 838 874 1006 SANB 1218 709 672 1089 SCRB 1122 618 678 874 SODB 1196 562 608 995 SPJB 3861 1562 1882 3578 STJB 1567 940 1118 1417 SYPB 3592 1577 1628 3203 THUB 3217 1455 1817 3197 TLHA 1608 590 794 1251 TRIB 639 393 539 580 YASB 1257 886 858 1050 YELB 2610 798 940 2142 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 19.1 22.8 21.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -16.3 +- 2.0 mm TY = 20.9 +- 2.0 mm TZ = 81.1 +- 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 0.92 0.74 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/DiznIrd6uMGqraOufGDaUy!cBew0KL!m4Anz!itCS+nEtEy!bDduIMYbAIUgC+ahuYHaDEaVGStCdL6VrKD2koIBDgvk+LgEAgIX28XdNc+8BMrsjsqyvU2fjZDyw7HBLpBErKSal3IyG5t9sFuWZRU2uNokP2Y1pJSv4vxM78W5x90KRtqFgUvtHsgT5nTdqnDVYG4ym5eN0pA8Ljz6NzbyYcKKgc0N si ce message est indésirable (pourriel). 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