****************************************************************************** dorisreport 01-May-2007 03:57:35 Message No 0862 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1419 = 07077 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1419 from 18-03-2007 to 24-03-2007 DORIS name (using day of start): 07077 Days of year: from 2007/77 to 2007/83 ============================================================== 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/ign07077wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07077wd04.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 1419 from 18-03-2007 to 24-03-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.92 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 18-03-2007 24927 8 24919 0.0 19-03-2007 25369 1 25368 0.0 20-03-2007 24247 6 24241 0.0 21-03-2007 24267 0 24267 0.0 22-03-2007 24685 14 24671 0.1 23-03-2007 24152 4 24148 0.0 24-03-2007 24236 2 24234 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 6798 7259 6704 6790 6936 6740 6768 SPOT2 4777 4885 4650 4502 4713 4313 4479 SPOT4 5432 5334 5209 5143 5248 5303 5275 SPOT5 7912 7890 7678 7832 7774 7792 7712 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.395 0.392 0.402 0.410 0.403 0.397 0.391 SPOT2 0.415 0.409 0.416 0.412 0.408 0.435 0.420 SPOT4 0.424 0.426 0.416 0.411 0.416 0.414 0.410 SPOT5 0.360 0.361 0.362 0.365 0.372 0.365 0.354 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 1482 1451 1406 1409 1415 1467 1406 AMTB 578 602 619 644 579 577 564 ARFB 407 432 364 440 439 370 425 ASDB 308 343 401 279 341 338 334 BEMB 1598 1724 1721 1502 1599 1724 1658 BETB 418 386 316 438 468 421 377 CADB 495 504 456 433 538 461 443 CHAB 709 702 704 760 714 726 721 CICB 446 529 432 443 524 517 443 CROB 449 435 356 425 556 459 378 DIOB 430 463 482 430 477 454 408 DJIB 446 426 468 417 462 468 453 EASB 474 468 463 509 396 407 496 EVEB 246 294 323 278 246 269 259 FAIB o 1138 1090 1003 1095 1002 1058 1070 FUTB 381 397 374 428 421 339 376 GAVB 227 245 230 193 0 263 201 GREB 517 549 486 541 527 509 585 HBMB 433 467 458 528 552 427 491 HEMB 405 331 434 344 344 6 0 KIUB 655 650 641 639 666 641 594 KOLB 576 637 555 524 640 563 549 KRUB 484 453 427 424 483 504 449 LICB 360 343 242 354 477 353 442 MAHB 381 359 156 0 0 0 0 MALB 446 450 420 482 403 389 461 MANB o 449 467 432 386 483 472 443 MATB 558 549 616 576 429 525 601 METB 751 723 704 718 726 712 717 MIAB 438 463 451 430 439 522 449 MONB 587 515 552 608 558 543 555 MORB 449 520 473 437 495 405 458 MSPB 589 637 514 474 488 580 620 NOWB 283 326 279 336 361 434 242 PAQB 490 483 465 440 500 434 504 REUB 414 441 398 415 401 350 381 REZB 722 787 671 650 744 729 658 RIKB 437 486 498 431 411 379 473 RIPB 614 641 654 603 625 619 643 ROTB 1153 1166 1080 1101 1148 1174 1142 SALB 466 449 634 486 489 443 520 SANB 558 539 557 488 546 602 412 SCRB 378 463 326 451 489 376 421 SODB o 486 450 388 444 488 448 400 SPJB 1593 1433 1452 1546 1496 1484 1484 STJB 681 632 735 743 663 660 763 SYPB 1341 1458 1364 1395 1333 1296 1388 THUB 1319 1275 1325 1424 1317 1283 1335 TLHA 649 635 537 592 623 605 607 YASB 570 624 613 438 435 617 593 YELB 836 854 828 943 949 871 843 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 3827 1502 1726 3248 AMTB 1432 789 949 1178 ARFB 1027 477 578 941 ASDB 819 414 533 774 BEMB 4512 1642 1788 3942 BETB 938 589 715 793 CADB 1103 632 831 886 CHAB 1643 980 1221 1336 CICB 1137 645 779 905 CROB 1185 539 350 1097 DIOB 859 721 786 858 DJIB 1097 615 736 892 EASB 1053 751 773 980 EVEB 520 335 431 719 FAIB 2911 1043 1236 2554 FUTB 1054 491 476 860 GAVB 726 0 0 709 GREB 1424 453 766 1189 HBMB 1127 665 731 942 HEMB 714 256 347 653 KIUB 1419 1052 1117 1184 KOLB 1275 835 1100 1033 KRUB 1145 644 665 974 LICB 912 523 481 864 MAHB 345 171 169 309 MALB 990 698 711 901 MANB 1155 522 658 975 MATB 1320 654 777 1234 METB 1866 744 876 1739 MIAB 1135 595 557 1055 MONB 1326 809 817 1063 MORB 1049 586 799 933 MSPB 1350 655 803 1214 NOWB 888 343 277 885 PAQB 1191 617 694 964 REUB 989 499 558 878 REZB 2123 671 561 1778 RIKB 1130 559 630 978 RIPB 1928 406 621 1600 ROTB 3266 973 900 3059 SALB 1240 644 798 1010 SANB 1211 740 749 1130 SCRB 978 546 644 900 SODB 1199 608 651 916 SPJB 3879 1434 1813 3619 STJB 1603 1005 1031 1369 SYPB 3594 1446 1680 3109 THUB 3285 1409 1804 3055 TLHA 1686 615 775 1338 YASB 1227 704 917 1171 YELB 2544 774 924 2086 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 19.2 20.9 15.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -12.6 +- 2.0 mm TY = 8.0 +- 2.0 mm TZ = 50.0 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.7 +- 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 1.53 0.83 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/Am20wS6pkdRof7V5pP4AgdwnYKREM+vjpb32OTYP9HxElBzm0w6gWbE2bcB9Qumq+j8DZznFyL5qR2Wz8Z7LhNibuv5IrtNYMA!80V59U0ClnypLEbCBcGUulgk!iFFuswKXRaSnFDT1mTxiLEy3PcMSIw8uISQUVAG8yHc2pI4FSW6A238Ck2OPT5i8zlw3zcak9H8sydSN0pA8Ljz6Nx5o8tYZyLb+ si ce message est indésirable (pourriel). 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