****************************************************************************** dorisreport 04-Apr-2007 11:45:35 Message No 0839 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Updated Report for week 1415 = 07049 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1415 from 18-02-2007 to 24-02-2007 DORIS name (using day of start): 07049 Days of year: from 2007/49 to 2007/55 ============================================================== 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/ign07049wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07049wd04.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 1415 from 18-02-2007 to 24-02-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.87 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 18-02-2007 23129 5 23124 0.0 19-02-2007 22873 4 22869 0.0 20-02-2007 23330 15 23315 0.1 21-02-2007 23835 9 23826 0.0 22-02-2007 23033 1 23032 0.0 23-02-2007 23016 31 22985 0.1 24-02-2007 22835 2 22833 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 6373 6370 6319 6425 5862 5958 5507 SPOT2 4584 4436 4789 4879 4772 4630 4906 SPOT4 4920 4822 5103 5264 5096 5106 5139 SPOT5 7247 7241 7104 7258 7302 7291 7281 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.390 0.402 0.398 0.393 0.404 0.420 0.418 SPOT2 0.444 0.430 0.431 0.408 0.411 0.420 0.420 SPOT4 0.409 0.405 0.424 0.434 0.421 0.426 0.420 SPOT5 0.359 0.364 0.362 0.354 0.361 0.369 0.371 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 1484 1441 1474 1400 1505 1337 1391 AMTB 620 602 609 573 544 631 518 ARFB 365 401 317 385 399 390 434 ASDB 356 331 281 328 371 384 313 BEMB 0 0 275 186 249 241 261 BETB 0 0 0 436 422 405 428 CADB 474 543 475 471 511 352 418 CHAB 163 158 168 586 759 753 677 CICB 534 412 457 487 486 442 506 CROB 566 515 496 446 456 483 471 DIOB 489 464 437 449 576 508 498 DJIB 503 465 478 452 466 442 392 EVEB 247 257 140 0 0 146 230 FAIB o 1090 1026 1103 1049 990 1039 967 FUTB 425 430 426 351 332 425 440 GAVB 232 256 25 239 210 86 0 GREB 477 538 585 552 504 494 510 HEMB 346 301 415 372 407 379 388 JIUB 570 533 589 575 485 465 595 KIUB 667 617 609 649 644 619 560 KOLB 592 642 553 634 583 510 620 KRUB 397 361 450 308 436 356 370 LICB 476 449 411 408 402 512 461 MAHB 412 317 382 366 379 352 312 MALB 461 408 434 464 406 492 399 MANB o 488 458 430 466 446 393 423 MATB 571 518 566 602 664 657 439 METB 738 711 716 753 728 725 725 MIAB 418 523 519 464 479 455 460 MONB 630 564 613 589 595 587 542 MORB 514 500 456 548 467 393 568 MSPB 512 506 611 659 535 116 350 NOWB 292 402 351 286 289 313 306 PAQB 508 495 465 482 471 332 435 REUB 439 390 412 438 411 373 326 REZB 713 639 710 722 698 709 762 RIKB 505 446 471 478 515 530 436 RIPB 751 771 734 654 656 625 616 ROTB 1285 1255 1263 1335 1239 1246 1226 SALB 515 473 528 447 539 555 492 SANB 479 532 534 521 546 464 527 SCRB 531 449 456 548 507 458 503 SODB o 75 33 94 87 86 75 72 SPJB 1550 1501 1592 1522 1517 1476 1378 STJB 649 690 760 680 710 686 624 SYPB 1423 1468 1392 1473 1494 1396 1300 THUB 1389 1322 1387 1385 1369 1431 1359 TLHA 563 580 617 627 549 574 598 TRIB o 494 605 459 517 563 577 471 YASB 470 528 566 545 553 520 521 YELB 946 882 849 921 849 869 849 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 3795 1616 1712 3182 AMTB 1238 880 919 1227 ARFB 997 348 568 919 ASDB 842 429 531 778 BEMB 10 1207 0 0 BETB 570 384 400 478 CADB 1013 666 769 931 CHAB 777 1123 675 771 CICB 1086 609 742 992 CROB 1256 599 613 1122 DIOB 944 852 787 911 DJIB 1015 638 766 950 EVEB 274 235 165 402 FAIB 2735 1000 1220 2609 FUTB 1030 531 550 907 GAVB 547 0 0 551 GREB 1387 508 700 1165 HEMB 1013 459 473 800 JIUB 1355 618 861 1148 KIUB 1311 1037 1053 1264 KOLB 1316 895 1023 1114 KRUB 1023 486 578 859 LICB 1017 668 639 938 MAHB 932 436 402 955 MALB 965 692 704 885 MANB 1069 525 633 1007 MATB 1288 780 807 1277 METB 1875 775 840 1790 MIAB 1202 594 589 1059 MONB 1248 806 1075 1082 MORB 1152 730 762 947 MSPB 1178 596 666 959 NOWB 808 325 385 842 PAQB 1179 572 658 995 REUB 944 527 610 927 REZB 2133 551 611 1849 RIKB 1107 707 777 959 RIPB 1988 550 646 1785 ROTB 3536 753 1593 3214 SALB 1151 843 930 888 SANB 1173 677 720 1167 SCRB 1141 704 793 970 SODB 0 537 0 0 SPJB 3760 1657 1791 3578 STJB 1529 911 1141 1360 SYPB 3761 1411 1825 3223 THUB 3230 1596 1857 3178 TLHA 1645 612 713 1301 TRIB 1110 875 866 1040 YASB 1216 740 853 1068 YELB 2513 862 866 2124 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 18.3 21.7 14.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -18.0 +- 2.3 mm TY = 6.5 +- 2.3 mm TZ = 13.9 +- 2.1 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.5 +- 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 1.40 0.85 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/gi5UA0sCy+Pfr2H3a5p7H7HDTiBzkUkxh25lB3O4G9zqs0dE!kN8hiiN7VD8Zclf!g81z2LZTzwqAFGda56ycrpmH!TufPuZlp8b0mFDRWq8BMrsjsqyvU2fjZDyw7HBLpBErKSal3IyG5t9sFuWZRU2uNokP2Y189dhY3qd44aZ9ukQvWrIXE0YChiInFL7yeMu1Ra2F489fo7w!Cq5Qlw1kG9AUq7M si ce message est indésirable (pourriel). Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr