****************************************************************************** dorisreport 15-Nov-2005 23:56:51 Message No 0414 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1337 = 05233 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1337 from 21-08-2005 to 27-08-2005 DORIS name (using day of start): 05233 Days of year: from 2005/233 to 2005/239 ============================================================== 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/ign05233wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05233wd04.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. 4) Global Statistics ==================== GPS week number 1337 from 21-08-2005 to 27-08-2005 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.55 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 21-08-2005 25861 18 25843 0.1 22-08-2005 25359 39 25320 0.2 23-08-2005 25348 89 25259 0.4 24-08-2005 25761 438 25323 1.7 25-08-2005 25813 42 25771 0.2 26-08-2005 26517 160 26357 0.6 27-08-2005 26744 51 26693 0.2 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 7672 7707 7798 7781 7880 8111 7969 SPOT2 4931 4609 4777 4719 4765 4683 5172 SPOT4 5231 5289 5064 5158 5432 5456 5300 SPOT5 8009 7715 7620 7665 7694 8107 8252 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.414 0.414 0.437 0.439 0.446 0.438 0.435 SPOT2 0.412 0.423 0.437 0.439 0.448 0.471 0.458 SPOT4 0.429 0.436 0.438 0.417 0.421 0.442 0.438 SPOT5 0.376 0.378 0.396 0.402 0.384 0.378 0.382 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 1467 1390 1434 1389 1465 1449 1492 AMTB 203 253 209 203 190 166 282 ASDB 361 321 257 303 341 281 330 BEMB 1560 1467 1517 1645 1648 1594 1579 CADB 504 503 455 340 446 450 555 CICB 404 432 465 419 447 401 456 CROB 362 371 361 382 335 451 446 DIOA o 458 418 466 511 454 376 473 DJIB 451 431 322 379 437 404 468 EASB 446 489 404 465 543 480 464 EVEB 256 185 249 284 294 264 249 FAIB o 963 938 1022 1004 1075 1013 934 FUTB 432 393 425 323 461 457 385 GREB 138 243 263 250 182 340 332 HBKB 292 435 381 401 326 482 438 HEMB 347 357 252 292 437 287 289 JIUB 310 205 340 421 451 503 382 KIUB 467 549 534 533 544 561 528 KOLB 535 441 552 425 474 554 565 KRUB 392 399 423 460 467 359 472 LIBB 376 372 387 432 343 423 407 MALB 331 409 310 351 474 493 456 MANB o 421 392 203 412 412 420 432 MATB 431 443 468 503 458 464 510 MIAB 420 415 447 502 389 394 472 MORB 441 501 515 335 489 462 425 MSPB 532 507 593 590 570 544 428 PAQB 527 460 517 405 384 514 397 PDMB 440 461 438 416 477 367 392 REUB 403 390 474 382 361 395 449 REZB 588 631 542 590 535 562 674 RIPB 661 638 637 702 674 629 614 ROTB 1116 1158 1179 1225 971 1104 1242 SAKB 653 749 680 238 362 528 476 SALB 0 212 223 195 286 218 235 SANB 506 474 568 475 443 507 589 SCRB 94 142 137 109 149 145 90 SODB o 509 77 267 483 463 563 233 SPJB 1489 1503 1514 1470 1577 1514 1408 STJB 537 247 114 286 156 425 473 SYPB 1337 1307 1291 1408 1326 1303 1325 THUB 1174 1206 1184 1168 1309 1220 1155 TLHA 495 512 464 514 447 472 516 TRIB o 539 448 348 533 444 427 560 YASB 544 410 473 601 496 417 466 YELB 862 835 864 814 746 902 848 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- KRAB 147 273 230 238 91 270 388 this is due to the lack of data or to some stations related problems as described below KRAB 31 7 2005 1 1 2010 equipment problem, insufficient power 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3611 2029 2086 2991 AMTB 440 165 389 558 ASDB 795 337 498 742 BEMB 3954 1970 2175 4333 CADB 1087 773 794 864 CICB 962 672 696 1153 CROB 1006 434 524 997 DIOA 995 785 803 825 DJIB 843 624 715 881 EASB 915 934 933 972 EVEB 463 330 366 685 FAIB 2492 1195 1148 2976 FUTB 1023 548 628 940 GREB 915 57 246 817 HBKB 884 599 682 851 HEMB 794 398 456 980 JIUB 711 549 696 901 KIUB 1246 890 830 1125 KOLB 1224 744 822 1327 KRUB 1008 591 673 1062 LIBB 943 479 677 1101 MALB 861 650 728 855 MANB 1042 507 532 859 MATB 1207 510 737 1105 MIAB 1131 589 604 1029 MORB 1035 704 771 928 MSPB 1217 795 917 1116 PAQB 937 771 839 1154 PDMB 1062 582 613 1211 REUB 922 506 692 990 REZB 1742 484 592 1621 RIPB 1625 853 942 1530 ROTB 3293 1259 1247 2840 SAKB 1039 930 988 1044 SALB 415 379 291 376 SANB 1284 702 793 1298 SCRB 1012 0 0 0 SODB 770 638 654 867 SPJB 3193 2196 2352 3526 STJB 485 568 563 799 SYPB 3594 1468 1687 3657 THUB 2923 1755 1681 2629 TLHA 1390 521 513 1516 TRIB 1052 721 778 1094 YASB 1015 811 855 1001 YELB 2267 943 984 2455 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 359 405 596 339 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 15.9 11.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -26.6 +- 1.9 mm TY = 13.9 +- 1.6 mm TZ = 48.8 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -3.0 +- 0.2 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 1.09 0.39 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr