****************************************************************************** dorisreport 16-Nov-2005 00:39:10 Message No 0419 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1342 = 05268 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1342 from 25-09-2005 to 01-10-2005 DORIS name (using day of start): 05268 Days of year: from 2005/268 to 2005/274 ============================================================== 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/ign05268wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05268wd04.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 1342 from 25-09-2005 to 01-10-2005 Total number of stations = 45 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.92 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 25-09-2005 20799 10 20789 0.0 26-09-2005 14594 5 14589 0.0 27-09-2005 14867 21 14846 0.1 28-09-2005 14520 16 14504 0.1 29-09-2005 20367 19 20348 0.1 30-09-2005 19984 39 19945 0.2 01-10-2005 18727 6 18721 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 5681 5520 5593 5580 5597 5752 5898 SPOT2 4320 4210 4649 4228 4421 4579 3183 SPOT4 4440 4840 4604 4696 4643 4807 4811 SPOT5 6348 19 0 0 5687 4807 4829 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.389 0.383 0.382 0.401 0.394 0.416 0.399 SPOT2 0.426 0.412 0.425 0.436 0.442 0.433 0.416 SPOT4 0.403 0.402 0.402 0.404 0.420 0.425 0.437 SPOT5 0.354 0.192 0.000 0.000 0.347 0.338 0.337 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 1480 1092 1169 1059 1447 1528 1418 AMTB 73 22 23 13 80 52 32 ASDB 303 192 75 52 137 99 149 BEMB 1736 1126 1223 1166 1094 1408 1287 CADB 457 332 354 364 378 456 380 CICB 456 313 375 305 453 450 406 CROB 400 291 265 311 436 394 237 DJIB 156 117 111 118 131 140 137 EASB 519 417 374 348 531 470 352 EVEB 297 180 127 164 270 226 183 FAIB o 954 738 719 688 1075 862 822 FUTB 377 305 277 249 291 392 367 HBKB 124 359 344 338 519 451 494 HEMB 294 64 71 122 254 246 204 JIUB 453 325 388 332 303 338 431 KIUB 576 412 425 417 576 532 479 KOLB 489 295 423 379 481 525 388 KRUB 423 253 256 326 306 411 266 LIBB 356 196 269 227 195 332 303 MALB 334 0 0 0 0 228 383 MANB o 353 277 319 321 442 374 378 MATB 392 358 298 231 415 370 361 METB 668 482 480 436 704 690 603 MIAB 541 389 367 408 544 507 417 MORB 414 358 405 339 392 455 392 MSPB 509 393 376 351 513 563 464 NOWB 406 283 254 322 397 286 384 PAQB 458 326 383 373 489 450 469 PDMB 469 378 250 346 462 375 385 REUB 411 274 331 272 410 436 338 REZB 613 326 302 382 739 506 704 RIPB 646 444 543 482 585 700 546 ROTB 1265 755 689 929 1447 1039 948 SAKB 315 231 225 227 398 492 641 SANB 562 320 383 347 529 503 394 SCRB 291 262 286 349 485 479 400 SODB o 462 340 420 398 481 369 442 SPJB 1512 1118 1161 1157 1542 1523 1338 STJB 584 537 501 432 670 564 620 SYPB 1359 914 1006 893 1329 1248 1156 THUB 510 390 411 320 491 561 344 TLHA 456 386 362 388 494 470 486 TRIB o 562 339 365 357 418 407 549 YASB 592 374 344 412 496 417 478 YELB 869 637 621 655 858 829 755 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- DIOA 0 0 0 0 110 0 0 KRAB 47 0 118 32 78 55 32 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 3821 1892 2184 1648 AMTB 0 0 183 119 ASDB 270 242 290 288 BEMB 4449 1737 2255 1156 CADB 1168 705 675 318 CICB 1155 644 684 549 CROB 1085 380 579 426 DJIB 0 558 276 114 EASB 1011 777 947 600 EVEB 518 360 358 258 FAIB 2787 1071 1238 1047 FUTB 1062 407 604 378 HBKB 0 0 0 0 HEMB 274 274 381 497 JIUB 1316 507 486 540 KIUB 1406 782 1053 493 KOLB 1272 710 855 365 KRUB 1074 505 576 320 LIBB 858 215 583 410 MALB 365 146 278 250 MANB 1161 584 551 402 MATB 1078 404 620 495 METB 1936 744 719 829 MIAB 1272 824 904 422 MORB 1091 745 776 320 MSPB 1340 754 702 582 NOWB 1246 380 497 371 PAQB 1261 533 883 524 PDMB 1225 542 597 496 REUB 944 652 644 397 REZB 1829 491 587 830 RIPB 1767 741 849 789 ROTB 3457 1335 1290 1289 SAKB 364 989 857 529 SANB 1340 722 738 435 SCRB 1054 598 681 406 SODB 1182 739 802 443 SPJB 3746 2138 2412 1582 STJB 1622 878 983 708 SYPB 3703 1252 1611 1699 THUB 0 1430 1074 647 TLHA 1623 520 535 578 TRIB 1224 645 882 458 YASB 1270 875 751 422 YELB 2658 818 932 1110 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- DIOA 0 0 50 62 KRAB 0 364 0 0 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 16.3 21.2 15.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -10.1 +- 2.1 mm TY = 17.1 +- 2.0 mm TZ = 30.5 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.4 +- 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 1.32 0.79 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr