****************************************************************************** dorisreport 18-May-2006 18:25:15 Message No 0588 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1370 = 06099 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1370 from 09-04-2006 to 15-04-2006 DORIS name (using day of start): 06099 Days of year: from 2006/99 to 2006/105 ============================================================== 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/ign06099wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06099wd04.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 1370 from 09-04-2006 to 15-04-2006 Total number of stations = 45 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.89 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 09-04-2006 21538 21 21517 0.1 10-04-2006 18922 27 18895 0.1 11-04-2006 19017 11 19006 0.1 12-04-2006 21483 38 21445 0.2 13-04-2006 21047 43 21004 0.2 14-04-2006 17620 23 17597 0.1 15-04-2006 17115 13 17102 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 4751 4989 4623 4437 3885 582 0 SPOT2 4692 1867 3704 4680 4652 4679 4844 SPOT4 4864 4852 3663 4848 5018 5076 5108 SPOT5 7210 7187 7016 7480 7449 7260 7150 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.397 0.393 0.381 0.396 0.371 0.366 0.000 SPOT2 0.397 0.395 0.413 0.416 0.423 0.417 0.402 SPOT4 0.430 0.419 0.431 0.414 0.414 0.427 0.411 SPOT5 0.360 0.368 0.363 0.358 0.359 0.365 0.362 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 1314 1118 1163 1225 1294 938 906 AMTB 489 361 387 423 360 351 327 ASDB 263 222 198 323 346 231 208 BEMB 1265 1189 1169 1204 1255 1047 1016 CADB 448 305 290 444 495 375 320 CHAB 704 458 514 640 544 518 496 CROB 232 309 247 311 341 259 183 EASB 341 369 332 405 423 289 367 EVEB 221 272 287 220 183 186 216 FAIB o 880 780 702 837 799 752 678 FUTB 315 277 297 406 370 234 258 GAVB 197 271 226 230 272 188 131 GREB 496 412 447 400 430 362 373 HEMB 268 239 303 276 206 240 248 JIUB 507 333 370 570 378 358 375 KESB 463 456 473 413 398 365 345 KIUB 459 442 375 479 495 426 415 KOLB 459 425 331 424 537 322 438 KRUB 398 259 292 383 366 378 315 LICB 359 229 194 378 338 228 204 MAHB 174 294 296 322 336 304 245 MALB 360 316 422 290 319 335 311 MANB o 450 380 278 363 401 276 284 METB 663 602 494 619 677 503 523 MIAB 385 405 313 328 359 366 266 MONB 512 325 458 527 438 394 333 MORB 438 298 360 400 458 292 334 MSPB 466 418 368 461 406 395 435 PAQB 416 390 394 422 433 304 378 PDMB 409 301 397 390 465 424 369 REUB 450 296 270 422 308 262 286 REZB 537 496 491 514 400 354 392 RIPB 587 432 465 556 518 360 403 ROTB 745 887 757 828 805 719 593 SANB 561 381 407 452 490 430 387 SCRB 286 245 330 345 266 313 350 SODB o 421 266 185 402 393 290 233 SPJB 1279 1123 1149 1270 1201 1064 1000 STJB 452 422 525 539 528 435 433 SYPB 1229 1131 1152 1199 1196 850 911 THUB 1017 1009 1055 1075 1075 929 864 TLHA 473 413 397 412 429 362 367 TRIB o 361 377 331 389 366 306 383 YASB 449 506 454 438 454 420 442 YELB 758 678 747 765 662 555 507 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- MATB 268 336 408 385 346 327 290 this is due to the lack of data or to some stations related problems as described below MATB 8 11 2005 1 1 2010 antenna fall 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 2091 1390 1713 3226 AMTB 517 652 619 1102 ASDB 337 365 476 742 BEMB 1327 1651 1712 3689 CADB 473 629 766 944 CHAB 705 986 1087 1323 CROB 400 385 375 839 EASB 342 816 758 845 EVEB 211 321 420 687 FAIB 933 1039 1136 2515 FUTB 332 530 521 919 GAVB 642 13 0 1027 GREB 610 659 675 1173 HEMB 311 352 396 842 JIUB 555 721 749 1076 KESB 522 648 803 1131 KIUB 381 905 920 1087 KOLB 488 777 981 917 KRUB 342 496 738 903 LICB 463 406 480 728 MAHB 403 421 476 793 MALB 446 593 657 853 MANB 520 487 677 928 METB 824 734 825 1854 MIAB 466 464 603 1052 MONB 568 745 769 1058 MORB 499 591 732 918 MSPB 592 594 825 1112 PAQB 378 826 816 913 PDMB 461 663 765 1015 REUB 590 546 469 837 REZB 728 262 672 1640 RIPB 821 596 528 1547 ROTB 1088 475 941 3016 SANB 485 733 961 1127 SCRB 266 573 665 753 SODB 475 602 532 715 SPJB 1716 1591 1673 3406 STJB 573 837 801 1300 SYPB 1974 1365 1494 3152 THUB 1107 1537 1726 2840 TLHA 558 401 712 1322 TRIB 276 555 742 1065 YASB 503 727 1049 1064 YELB 1151 806 850 2086 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- MATB 516 473 533 986 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 17.5 19.9 19.6 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -17.2 +- 2.0 mm TY = 8.9 +- 1.9 mm TZ = 89.2 +- 1.9 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 2.30 0.36 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr