****************************************************************************** dorisreport 19-Apr-2007 04:02:44 Message No 0852 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1418 = 07070 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1418 from 11-03-2007 to 17-03-2007 DORIS name (using day of start): 07070 Days of year: from 2007/70 to 2007/76 ============================================================== 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/ign07070wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07070wd04.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 1418 from 11-03-2007 to 17-03-2007 Total number of stations = 53 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 -------------------------------------------------------- 11-03-2007 24987 11 24976 0.0 12-03-2007 24982 9 24973 0.0 13-03-2007 24881 15 24866 0.1 14-03-2007 24651 48 24603 0.2 15-03-2007 24429 7 24422 0.0 16-03-2007 24999 6 24993 0.0 17-03-2007 24919 12 24907 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 6984 6868 7025 6820 6715 7085 6910 SPOT2 4893 4802 4728 4607 4879 4766 4653 SPOT4 5275 5382 5351 5434 5009 5244 5366 SPOT5 7824 7921 7762 7742 7819 7898 7978 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.411 0.407 0.408 0.410 0.403 0.417 0.400 SPOT2 0.407 0.420 0.407 0.402 0.426 0.452 0.413 SPOT4 0.422 0.410 0.401 0.410 0.423 0.422 0.442 SPOT5 0.363 0.376 0.356 0.374 0.366 0.364 0.359 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 1373 1416 1534 1362 1425 1472 1387 AMTB 582 616 609 593 580 563 581 ARFB 382 429 394 257 321 379 452 ASDB 377 387 272 369 275 301 377 BEMB 1637 1685 1721 1675 1732 1638 1681 BETB 398 469 410 398 438 429 427 CADB 480 503 525 486 480 509 490 CHAB 713 732 764 737 722 732 706 CICB 428 504 495 477 488 529 469 CROB 549 544 409 453 533 458 521 DIOB 402 464 452 447 498 508 495 DJIB 485 439 437 454 475 487 503 EASB 112 121 87 357 460 431 480 EVEB 245 249 277 304 272 274 231 FAIB o 1080 1065 1029 1047 1051 1080 1021 FUTB 424 422 425 383 406 420 387 GAVB 220 227 273 207 217 254 263 GREB 437 558 569 479 545 506 520 HBMB 480 431 434 400 534 541 380 HEMB 388 366 332 423 397 348 341 JIUB 549 568 506 261 0 0 0 KIUB 605 645 621 554 547 669 608 KOLB 493 646 596 563 578 593 600 KRUB 432 364 467 364 423 398 450 LICB 255 392 454 451 414 443 452 MAHB 341 358 296 286 310 436 200 MALB 451 357 399 471 411 480 414 MANB o 446 452 503 470 406 490 472 MATB 526 497 475 563 503 455 545 METB 692 758 734 671 721 717 723 MIAB 507 453 533 503 396 442 432 MONB 637 644 595 498 545 574 571 MORB 369 571 419 467 540 442 509 MSPB 546 560 581 579 580 518 510 NOWB 335 268 322 293 237 340 368 PAQB 420 441 458 429 398 461 452 REUB 374 402 417 383 398 419 430 REZB 753 657 681 816 707 677 739 RIKB 480 414 441 496 413 396 365 RIPB 670 732 634 609 644 670 731 ROTB 1094 1004 1068 1066 1086 1104 1038 SALB 651 480 494 581 453 456 568 SANB 457 562 531 550 502 512 569 SCRB 541 499 426 495 424 423 352 SODB o 77 71 103 302 387 440 439 SPJB 1425 1548 1486 1529 1508 1472 1525 STJB 709 681 655 714 741 693 749 SYPB 1307 1309 1412 1343 1376 1370 1306 THUB 1466 1358 1314 1279 1337 1423 1317 TLHA 581 526 629 568 548 576 581 TRIB o 517 106 0 0 0 0 0 YASB 582 510 625 635 511 568 499 YELB 942 933 853 802 911 924 874 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 3828 1564 1691 3161 AMTB 1360 791 890 1228 ARFB 1053 359 514 909 ASDB 821 455 479 816 BEMB 4521 1738 1924 3965 BETB 971 599 731 866 CADB 1046 777 768 1010 CHAB 1581 1149 1168 1349 CICB 1138 672 750 967 CROB 1263 557 654 1139 DIOB 872 863 746 880 DJIB 1109 684 797 964 EASB 562 751 473 490 EVEB 515 371 361 691 FAIB 2802 1013 1227 2626 FUTB 1050 565 527 892 GAVB 950 0 0 807 GREB 1361 607 569 1192 HBMB 1105 514 698 1020 HEMB 1030 473 397 799 JIUB 716 295 468 485 KIUB 1378 913 1093 1178 KOLB 1279 822 1032 1094 KRUB 1061 549 677 854 LICB 1012 551 638 839 MAHB 844 347 433 768 MALB 1003 641 669 813 MANB 1128 613 659 988 MATB 1279 525 710 1185 METB 1862 726 834 1782 MIAB 1167 522 651 1067 MONB 1310 778 979 1095 MORB 1104 687 711 960 MSPB 1391 713 823 1107 NOWB 791 252 359 883 PAQB 1142 540 601 1014 REUB 973 498 573 946 REZB 2269 515 668 1756 RIKB 1111 518 669 879 RIPB 1920 666 654 1612 ROTB 3205 694 773 3009 SALB 1283 814 928 936 SANB 1295 611 763 1168 SCRB 1141 521 751 899 SODB 500 583 352 523 SPJB 3869 1573 1793 3495 STJB 1606 973 1097 1394 SYPB 3512 1402 1581 3184 THUB 3156 1623 1896 3081 TLHA 1558 564 728 1322 TRIB 163 187 130 177 YASB 1391 776 855 1061 YELB 2525 817 874 2239 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 17.7 20.6 15.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -10.1 +- 2.1 mm TY = 19.8 +- 2.1 mm TZ = 75.7 +- 2.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.6 +- 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 1.08 0.68 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/0fU8r07!vf4IkRW6AqnFz9M92Q7pJo8wnF0TWhUgmFWa3Jzt2nvLVsHOhvODwjtWG08G1zqNigoIs6XJUxj0TJfSkBYMyBirfHsAnmdoi5i8BMrsjsqyvU2fjZDyw7HBLpBErKSal3IyG5t9sFuWZRU2uNokP2Y1HaDPja!wOkwzX!djfYx9eNgaMK1gHavRI7SyO3ZzOzcgpSO+DZDrW3pq6clOpXKB si ce message est indésirable (pourriel). 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