****************************************************************************** dorisreport 05-Jan-2006 18:19:32 Message No 0466 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1331 = 05191 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1331 from 10-07-2005 to 16-07-2005 DORIS name (using day of start): 05191 Days of year: from 2005/191 to 2005/197 ============================================================== 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/ign05191wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05191wd04.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 1331 from 10-07-2005 to 16-07-2005 Total number of stations = 44 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.94 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 10-07-2005 24328 52 24276 0.2 11-07-2005 25358 12 25346 0.0 12-07-2005 25127 17 25110 0.1 13-07-2005 25683 24 25659 0.1 14-07-2005 24549 24 24525 0.1 15-07-2005 23615 14 23601 0.1 16-07-2005 24141 17 24124 0.1 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 7408 7622 7656 8009 7221 6766 7447 SPOT2 4234 4605 4357 4659 4610 4415 4342 SPOT4 4996 5088 5053 5249 5245 4872 4772 SPOT5 7638 8031 8044 7742 7449 7548 7563 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.454 0.427 0.448 0.445 0.442 0.429 0.440 SPOT2 0.442 0.431 0.422 0.417 0.426 0.434 0.427 SPOT4 0.457 0.428 0.461 0.427 0.441 0.452 0.442 SPOT5 0.393 0.391 0.383 0.389 0.392 0.390 0.392 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 1481 1385 1299 1491 1459 1393 1422 AMTB 141 245 184 200 183 171 223 BEMB 0 1349 1525 1642 1550 1556 1575 CADB 525 473 494 542 479 356 479 CICB 232 354 376 359 326 309 369 CROB 424 394 397 404 419 408 412 DIOA o 436 467 387 514 512 337 436 DJIB 196 190 179 196 217 182 179 EASB 460 486 380 462 434 481 416 EVEB 210 233 236 278 314 256 262 FAIB o 933 992 969 1032 995 1002 1009 FUTB 490 426 441 362 441 488 490 GREB 443 396 388 428 418 352 296 HBKB 492 444 452 408 415 468 489 HEMB 278 345 326 297 379 294 282 JIUB 336 432 469 464 426 527 478 KIUB 548 461 543 535 484 573 535 KOLB 500 512 466 595 508 395 529 KRAB o 262 334 357 411 483 382 542 KRUB 387 483 448 491 394 401 456 LIBB 332 425 356 421 413 370 419 MANB o 374 28 0 0 0 0 0 MATB 401 415 446 453 405 527 427 METB 628 596 624 573 677 568 550 MIAB 477 407 439 476 456 418 413 MORB 488 427 539 491 134 0 0 MSPB 640 505 577 523 578 563 563 PAQB 516 514 519 514 453 537 527 PDMB 381 560 411 407 494 468 485 REUB 426 317 354 434 349 353 425 REZB 533 687 670 663 662 656 457 RIPB 593 658 561 560 644 498 633 ROTB 1059 1115 1324 1264 1115 1226 1156 SAKB 725 733 671 572 600 508 436 SANB 581 448 414 528 539 461 565 SODB o 519 516 488 497 445 497 515 SPJB 1524 1548 1518 1484 1483 1470 1551 STJB 428 391 369 387 358 425 316 SYPB 1327 1336 1235 1375 1278 1298 1353 THUB 1270 1045 1202 1207 1206 1236 1157 TLHA 537 527 523 485 409 385 451 TRIB o 454 500 401 401 508 388 418 YASB 516 489 488 510 537 472 481 YELB 872 796 721 383 0 0 0 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 3609 1967 2062 2912 AMTB 390 85 323 606 BEMB 3436 1470 1829 3679 CADB 1189 670 696 1071 CICB 692 618 537 832 CROB 1043 434 613 1011 DIOA 996 573 794 955 DJIB 415 447 154 370 EASB 918 774 881 964 EVEB 484 361 357 648 FAIB 2442 1159 1259 2874 FUTB 1031 539 821 1015 GREB 1122 202 577 1287 HBKB 1044 630 747 1023 HEMB 882 299 476 959 JIUB 1080 560 693 1105 KIUB 1309 838 841 1056 KOLB 1185 716 856 1304 KRAB 1164 75 799 921 KRUB 1000 660 665 1129 LIBB 1032 410 624 1142 MANB 180 87 66 119 MATB 1095 514 652 1055 METB 1465 741 730 1450 MIAB 1092 627 671 957 MORB 609 494 546 604 MSPB 1315 824 1007 1085 PAQB 1135 859 876 1259 PDMB 1137 620 779 1127 REUB 940 497 471 994 REZB 1813 514 739 1640 RIPB 1634 801 651 1395 ROTB 3268 1392 1450 2811 SAKB 1111 1118 1122 1271 SANB 1236 665 724 1458 SODB 1035 781 879 1272 SPJB 3183 2313 2375 3486 STJB 0 762 814 1242 SYPB 3520 1462 1611 3760 THUB 3024 1677 1647 2569 TLHA 1333 497 549 1418 TRIB 944 601 770 1076 YASB 1099 902 732 1040 YELB 1061 399 494 1238 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 14.9 15.5 12.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -21.5 +- 1.8 mm TY = 20.9 +- 1.7 mm TZ = 55.0 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -3.4 +- 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 2.77 1.32 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr