****************************************************************************** dorisreport 23-Feb-2007 07:46:33 Message No 0804 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1405 = 06344 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1405 from 10-12-2006 to 16-12-2006 DORIS name (using day of start): 06344 Days of year: from 2006/344 to 2006/350 ============================================================== 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/ign06344wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06344wd04.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 1405 from 10-12-2006 to 16-12-2006 Total number of stations = 49 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.96 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 10-12-2006 23240 14 23226 0.1 11-12-2006 22798 3 22795 0.0 12-12-2006 21048 7 21041 0.0 13-12-2006 17111 3 17108 0.0 14-12-2006 16959 1 16958 0.0 15-12-2006 16982 1 16981 0.0 16-12-2006 20037 3 20034 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 6379 5943 4024 0 0 0 3086 SPOT2 4606 4663 4651 4676 4527 4787 4737 SPOT4 5070 4995 5018 5107 5117 5021 4953 SPOT5 7171 7194 7348 7325 7314 7173 7258 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.387 0.406 0.440 0.000 0.000 0.000 0.391 SPOT2 0.414 0.443 0.421 0.407 0.421 0.414 0.442 SPOT4 0.419 0.416 0.405 0.408 0.405 0.417 0.404 SPOT5 0.357 0.365 0.374 0.357 0.350 0.356 0.352 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 1461 1420 1168 888 870 937 1245 AMTB 539 561 473 382 385 413 409 ARFB 393 392 448 319 289 241 306 ASDB 298 388 292 261 256 241 303 BETB 487 402 363 298 298 306 365 CADB 435 440 421 336 363 349 342 CICB 534 416 433 332 374 343 305 CROB 472 455 432 299 283 278 332 DIOB 471 491 379 369 268 310 331 DJIB 467 468 402 346 323 304 421 EVEB 267 323 259 195 194 210 275 FAIB o 1053 1052 917 642 693 664 750 FUTB 322 462 382 325 253 258 347 GAVB 242 219 135 126 66 130 203 GREB 549 526 491 353 325 370 427 HEMB 349 425 360 229 218 240 389 JIUB 583 461 579 392 370 355 474 KIUB 623 610 579 468 462 469 498 KOLB 651 571 481 412 439 451 437 KRUB 389 349 369 243 295 315 242 LICB 487 418 290 337 308 295 349 MAHB 422 368 296 265 221 225 261 MALB 468 452 441 326 287 334 373 MANB o 461 386 444 295 326 292 406 MATB 585 615 509 331 378 409 458 METB 712 730 581 492 456 485 565 MIAB 455 444 406 291 348 213 278 MONB 524 584 505 396 381 368 468 MORB 499 426 493 326 372 329 424 NOWB 428 376 336 217 328 255 259 PAQB 503 470 416 318 331 298 425 PDMB 457 417 459 329 308 344 389 REUB 458 400 299 328 299 301 324 REZB 685 654 524 338 425 422 598 RIKB 491 484 400 340 288 300 392 RIPB 724 619 699 455 442 419 454 ROTB 1442 1366 1408 899 890 909 1064 SALB 329 426 469 340 330 283 438 SANB 512 444 487 375 401 358 381 SCRB 533 494 393 283 322 310 395 SODB o 90 88 79 72 69 109 91 SPJB 1477 1473 1380 1047 967 1009 1247 STJB 615 533 627 456 434 433 587 SYPB 1510 1553 1293 989 926 946 1093 THUB 1367 1333 1142 949 943 971 1044 TLHA 569 471 466 326 398 345 400 TRIB o 523 603 477 372 377 368 489 YASB 528 596 571 365 399 404 404 YELB 896 916 687 578 546 521 684 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 1661 1620 1750 3165 AMTB 489 674 889 1189 ARFB 566 411 567 925 ASDB 337 484 545 804 BETB 522 621 697 801 CADB 452 665 819 847 CICB 481 685 737 922 CROB 512 440 568 1116 DIOB 341 756 748 823 DJIB 508 671 768 920 EVEB 253 383 432 723 FAIB 1118 1135 1162 2567 FUTB 409 545 597 891 GAVB 448 0 0 762 GREB 546 622 778 1157 HEMB 391 477 488 915 JIUB 625 793 780 1131 KIUB 598 1018 1089 1223 KOLB 531 1017 989 999 KRUB 456 510 616 805 LICB 481 594 583 907 MAHB 409 432 447 890 MALB 441 681 728 916 MANB 567 583 658 945 MATB 597 685 867 1218 METB 782 720 870 1765 MIAB 479 604 497 952 MONB 529 816 821 1135 MORB 543 692 800 955 NOWB 495 345 538 904 PAQB 539 605 725 991 PDMB 413 623 695 1083 REUB 433 604 611 860 REZB 854 653 446 1815 RIKB 415 683 713 1023 RIPB 963 587 641 1731 ROTB 1679 1543 1655 3282 SALB 437 643 676 1022 SANB 497 753 721 1065 SCRB 467 701 712 934 SODB 0 609 0 0 SPJB 1620 1708 1905 3548 STJB 691 786 985 1309 SYPB 1544 1723 1922 3318 THUB 1213 1727 1835 3147 TLHA 712 494 598 1290 TRIB 546 815 898 1103 YASB 492 853 909 1112 YELB 1070 800 931 2176 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 15.9 16.6 19.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -18.8 +- 2.5 mm TY = -9.5 +- 2.6 mm TZ = 36.5 +- 2.2 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.8 +- 0.4 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 0.98 0.48 ============================================================== Cliquez sur l'url suivante https://www.mailcontrol.com/sr/Yl3M2VS40zkz5IYpFEGCsa17ro2VQPOpk9ZhbuKOyYfIaie7BERQqA3!UnDfDqczOiNmnJBeWEYfc5xKlRfvjFpT0qsHfhvRGKsrpyawL6C8BMrsjsqyvU2fjZDyw7HBLpBErKSal3IyG5t9sFuWZRU2uNokP2Y1NL!94xecrbAWYiZri9LaWXTjBxpuzBqueU41LKcO5bW49bGD!zSdgil1jpaPNlJ6 si ce message est indésirable (pourriel). 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