****************************************************************************** dorisreport 15-Nov-2005 23:47:08 Message No 0413 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1336 = 05226 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1336 from 14-08-2005 to 20-08-2005 DORIS name (using day of start): 05226 Days of year: from 2005/226 to 2005/232 ============================================================== 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/ign05226wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05226wd04.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 1336 from 14-08-2005 to 20-08-2005 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.93 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 14-08-2005 24454 63 24391 0.3 15-08-2005 25212 17 25195 0.1 16-08-2005 26335 35 26300 0.1 17-08-2005 25949 877 25072 3.4 18-08-2005 24933 26 24907 0.1 19-08-2005 24757 42 24715 0.2 20-08-2005 26972 1146 25826 4.2 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 7746 7656 7726 7846 7356 7691 8076 SPOT2 4733 4858 5009 4784 4879 4403 5165 SPOT4 5432 5279 5324 5231 5109 5116 5514 SPOT5 6480 7402 8241 7211 7563 7505 7071 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.430 0.429 0.431 0.444 0.447 0.424 0.429 SPOT2 0.416 0.398 0.423 0.438 0.434 0.443 0.442 SPOT4 0.440 0.417 0.433 0.437 0.426 0.433 0.447 SPOT5 0.394 0.381 0.391 0.405 0.390 0.379 0.366 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 1445 1362 1450 1462 1464 1351 1519 AMTB 263 212 221 218 237 206 229 ASDB 147 133 220 313 286 275 312 BEMB 1522 1491 1603 1532 1418 1423 1638 CADB 528 434 487 584 516 466 434 CICB 457 440 488 468 449 423 504 CROB 337 389 417 391 382 370 398 DIOA o 344 467 410 456 483 396 487 DJIB 250 213 271 0 0 0 244 EASB 463 518 485 456 421 518 480 EVEB 274 252 227 247 259 219 293 FAIB o 978 942 967 996 975 1043 1041 FUTB 433 403 454 423 389 465 491 GREB 0 52 155 230 181 104 286 HBKB 384 352 506 492 443 361 426 HEMB 292 350 323 302 316 400 327 JIUB 184 256 429 207 238 412 453 KIUB 275 505 530 511 492 566 557 KOLB 522 448 506 599 455 413 556 KRUB 393 424 456 466 431 382 420 LIBB 357 441 315 369 369 328 450 MALB 463 495 491 417 415 388 334 MANB o 417 445 395 408 434 365 439 MATB 375 472 443 387 458 488 433 MIAB 489 380 403 403 465 419 436 MORB 472 459 510 534 453 451 521 MSPB 598 595 523 574 541 603 630 PAQB 384 375 492 440 438 456 523 PDMB 326 449 375 404 509 402 442 REUB 386 367 398 438 344 385 432 REZB 574 545 428 734 462 603 583 RIPB 549 696 616 583 703 596 696 ROTB 1241 947 1157 1288 1032 1155 1052 SAKB 424 586 722 208 392 240 653 SALB 0 0 199 239 115 0 0 SANB 563 472 492 626 567 487 489 SCRB 143 116 143 146 115 148 147 SODB o 476 472 508 566 485 484 505 SPJB 1451 1581 1540 1516 1485 1533 1569 STJB 530 599 551 546 425 550 482 SYPB 1269 1277 1307 1314 1345 1298 1357 THUB 1076 1220 1271 1004 1186 1174 1253 TLHA 389 496 394 544 436 511 476 TRIB o 490 529 418 460 481 512 436 YASB 568 573 475 457 558 529 516 YELB 770 810 861 812 792 805 870 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 226 202 360 215 130 108 189 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 3658 2059 2133 2830 AMTB 540 75 421 616 ASDB 554 305 355 584 BEMB 3516 2040 2226 4176 CADB 1193 823 715 999 CICB 1103 737 699 1155 CROB 1028 397 566 940 DIOA 967 668 809 830 DJIB 275 296 279 165 EASB 1001 833 926 1108 EVEB 480 370 378 613 FAIB 2439 1231 1216 2905 FUTB 1088 687 625 916 GREB 593 14 203 353 HBKB 1017 668 737 787 HEMB 868 359 469 1002 JIUB 426 504 559 897 KIUB 1139 797 803 1020 KOLB 1183 944 807 1065 KRUB 906 706 699 1020 LIBB 891 500 679 968 MALB 875 684 849 868 MANB 1073 544 604 954 MATB 1086 504 719 984 MIAB 1085 575 690 905 MORB 1116 835 756 983 MSPB 1365 878 967 1163 PAQB 785 813 891 1056 PDMB 1022 581 613 1101 REUB 966 478 692 857 REZB 1704 317 604 1653 RIPB 1624 888 879 1405 ROTB 3295 1158 1302 2787 SAKB 696 868 891 1041 SALB 173 161 106 151 SANB 1199 850 828 1329 SCRB 1108 0 0 0 SODB 1087 849 895 1110 SPJB 3234 2421 2380 3428 STJB 1226 808 675 1284 SYPB 3525 1537 1668 3554 THUB 2845 1851 1701 2338 TLHA 1245 509 533 1460 TRIB 962 686 886 1162 YASB 1236 869 895 987 YELB 2237 912 957 2417 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 733 84 594 106 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 14.5 14.8 12.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -31.6 +- 1.9 mm TY = 19.7 +- 1.7 mm TZ = 73.5 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -3.0 +- 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 1.29 0.82 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr