****************************************************************************** dorisreport 31-Jul-2007 02:57:10 Message No 0951 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1434 = 07182 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1434 from 01-07-2007 to 07-07-2007 DORIS name (using day of start): 07182 Days of year: from 2007/182 to 2007/188 ============================================================== 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/ign07182wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07182wd04.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., Y.E. Bar-Sever, G. Tavernier (2005), DORIS as a potential part of a Global Geodetic Observing System, J. Geodyn., 40(4-5), 494-501, DOI: 10.1016/j.jog.2005.06.011 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 1434 from 01-07-2007 to 07-07-2007 Total number of stations = 54 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.79 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 01-07-2007 24631 7 24624 0.0 02-07-2007 24397 48 24349 0.2 03-07-2007 24065 12 24053 0.0 04-07-2007 23485 9 23476 0.0 05-07-2007 24290 7 24283 0.0 06-07-2007 23737 3 23734 0.0 07-07-2007 23327 3 23324 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 6834 7075 6818 6368 6916 6580 6451 SPOT2 4724 4441 4206 4018 4087 4436 4553 SPOT4 5277 5144 5124 5201 5469 5266 5043 SPOT5 7789 7689 7905 7889 7811 7452 7277 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.432 0.413 0.404 0.433 0.421 0.409 0.425 SPOT2 0.448 0.434 0.439 0.439 0.430 0.430 0.424 SPOT4 0.436 0.439 0.455 0.440 0.415 0.425 0.422 SPOT5 0.375 0.369 0.366 0.381 0.379 0.376 0.381 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 1421 1413 1385 1311 1465 1353 1422 AMUB 464 468 527 514 508 484 472 ARFB 403 392 382 391 410 353 375 ASDB 318 324 368 335 351 374 394 BEMB 1676 1685 1614 1647 1577 1655 1681 BETB 399 452 412 376 484 446 414 CADB 486 517 502 508 582 442 462 CHAB 677 734 734 730 702 750 736 CICB 512 521 424 396 531 510 484 CRPB 373 282 406 352 333 270 270 DIOB 428 482 544 514 410 454 460 DJIB 483 487 433 463 493 430 456 EASB 517 448 470 450 432 458 482 EVEB 225 309 259 243 221 294 271 FAIB o 1028 982 1029 893 1000 977 993 FUTB 350 401 313 414 384 363 440 GAVB 207 235 322 278 336 325 261 GREB 480 479 436 500 500 501 513 HBMB 512 473 440 474 478 429 511 HEMB 387 317 350 430 378 428 527 JIUB 567 523 458 568 569 477 504 KETB 570 537 499 500 501 583 630 KIUB 558 641 580 621 630 560 632 KOLB 566 559 502 481 574 570 495 KRUB 426 469 387 402 464 503 475 LICB 462 396 462 393 456 441 404 MAHB 366 191 336 380 417 353 303 MALB 443 470 472 470 397 438 423 MANB o 486 504 463 474 477 478 440 MATB 441 580 472 460 505 535 556 METB 708 667 756 809 744 721 772 MIAB 435 426 448 401 448 522 275 MONB 519 549 556 535 545 548 597 MORB 456 506 366 466 499 452 499 MSPB 576 611 495 478 643 594 561 NOWB 284 303 363 306 357 326 256 PAQB 469 485 415 361 475 0 0 PDMB 0 0 0 0 22 11 0 REUB 347 427 384 393 373 381 371 REZB 824 650 795 729 719 775 621 RIKB 458 455 426 410 424 409 437 RIPB 562 661 602 620 652 597 607 ROTB 1166 1040 1121 928 803 550 0 SALB 472 527 606 515 442 522 598 SANB 516 494 539 498 551 514 437 SCRB 538 497 482 501 413 485 523 SODB o 459 475 441 451 505 409 408 SPJB 1477 1456 1511 1416 1513 1443 1522 STJB 579 682 633 669 656 660 705 SYPB 1289 1293 1302 1220 1269 1357 1337 THUB 1420 1315 1391 1303 1302 1397 1440 TLHA 601 343 0 0 0 0 0 TLSB 0 0 0 0 221 199 209 YASB 586 560 578 451 410 628 562 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 3761 1374 1737 3177 AMUB 1254 574 653 1102 ARFB 1051 325 553 942 ASDB 916 420 537 870 BEMB 4491 1646 1938 3952 BETB 1011 606 733 845 CADB 1101 761 881 911 CHAB 1624 1040 1211 1334 CICB 1220 683 745 953 CRPB 914 387 360 812 DIOB 1082 582 794 1049 DJIB 1098 641 741 905 EASB 1164 788 853 1098 EVEB 536 327 415 736 FAIB 2703 950 1211 2585 FUTB 1042 502 535 903 GAVB 1168 9 6 969 GREB 1428 460 680 1134 HBMB 1145 633 721 971 HEMB 1037 501 477 964 JIUB 1353 764 767 1161 KETB 1390 646 785 1197 KIUB 1422 1010 1108 1203 KOLB 1259 631 1032 999 KRUB 1167 597 681 951 LICB 1004 597 612 917 MAHB 930 399 441 829 MALB 1056 657 775 921 MANB 1239 586 684 969 MATB 1220 596 706 1181 METB 2132 583 846 1935 MIAB 1147 580 666 999 MONB 1350 713 809 1135 MORB 1085 656 742 953 MSPB 1270 792 859 1194 NOWB 899 300 340 839 PAQB 853 300 480 719 PDMB 2 66 0 0 REUB 959 494 523 851 REZB 2198 714 699 1931 RIKB 1025 540 643 1052 RIPB 1930 364 637 1552 ROTB 2492 576 610 2290 SALB 1212 637 899 1076 SANB 1265 693 681 1080 SCRB 1124 687 738 976 SODB 1215 562 657 924 SPJB 3839 1505 1758 3591 STJB 1642 764 1078 1398 SYPB 3500 1193 1571 3100 THUB 3351 1567 1775 3172 TLHA 495 104 218 193 TLSB 1 260 382 0 YASB 1251 723 952 1063 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 16.0 20.5 15.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -26.5 +- 2.3 mm TY = 21.4 +- 2.3 mm TZ = 46.0 +- 2.1 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.9 +- 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 1.05 0.63 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr