****************************************************************************** dorisreport 02-Jan-2006 16:49:28 Message No 0458 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1349 = 05317 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1349 from 13-11-2005 to 19-11-2005 DORIS name (using day of start): 05317 Days of year: from 2005/317 to 2005/323 ============================================================== 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/ign05317wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05317wd04.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 1349 from 13-11-2005 to 19-11-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.35 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 13-11-2005 23680 25 23655 0.1 14-11-2005 22452 18 22434 0.1 15-11-2005 17659 31 17628 0.2 16-11-2005 16708 9 16699 0.1 17-11-2005 17069 15 17054 0.1 18-11-2005 16812 17 16795 0.1 19-11-2005 16707 15 16692 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 6198 5018 8 0 0 0 0 SPOT2 5094 4734 4904 4759 4920 4765 4423 SPOT4 4998 5243 5236 4929 4912 4809 4975 SPOT5 7365 7439 7480 7011 7222 7221 7294 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.400 0.383 0.164 0.000 0.000 0.000 0.000 SPOT2 0.444 0.421 0.442 0.415 0.412 0.416 0.421 SPOT4 0.416 0.425 0.400 0.405 0.400 0.414 0.415 SPOT5 0.370 0.347 0.359 0.353 0.349 0.361 0.352 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 1454 1502 959 1022 1007 919 900 ASDB 226 284 203 145 0 0 0 BEMB 1637 1519 1162 1125 1141 1075 1082 CADB 459 487 287 283 261 319 339 CHAB 710 577 370 457 447 496 376 CICB 434 408 325 320 301 315 345 CROB 380 306 213 182 221 202 226 DIOA o 493 493 336 294 305 295 310 EASB 480 369 324 355 351 353 297 EVEB 231 223 212 219 156 190 184 FAIB o 1061 922 676 613 701 653 673 FUTB 461 331 228 223 290 270 228 HBKB 475 456 274 265 287 319 299 HEMB 365 299 241 266 247 182 205 JIUB 549 416 290 322 364 321 339 KESB 540 440 354 400 363 358 337 KIUB 586 531 414 408 422 421 424 KOLB 545 543 344 300 319 393 352 KRUB 296 348 296 240 140 169 185 LIBB 430 415 226 94 256 243 229 MALB 487 398 361 342 354 323 310 MANB o 416 409 291 273 302 303 305 MATB 392 383 269 259 334 321 279 METB 731 700 456 434 468 459 430 MIAB 496 481 403 349 374 351 375 MORB 462 413 320 354 351 328 319 MSPB 467 550 382 362 355 278 393 NOWB 286 457 196 187 242 193 292 PAQB 537 516 329 322 367 388 370 PDMB 397 471 325 351 302 303 314 REUB 476 391 300 320 314 329 268 REZB 725 667 341 212 351 271 416 RIPB 660 506 453 494 405 493 402 ROTB 1397 1199 835 641 695 655 873 SAKB 713 664 472 573 516 0 0 SALB 354 373 236 364 277 240 229 SANB 448 464 375 332 374 373 418 SCRB 399 403 347 365 326 287 337 SODB o 557 446 366 339 379 393 323 SPJB 1519 1435 1129 1069 1117 1160 1057 STJB 602 586 431 392 484 486 390 SYPB 1354 1047 942 481 301 928 765 THUB 1139 1090 888 937 950 876 877 TLHA 489 549 311 219 321 263 348 TRIB o 402 437 367 344 369 349 322 YASB 488 492 380 408 357 357 376 YELB 975 701 523 555 566 549 539 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 111 26 69 0 118 45 61 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 1029 1847 2015 3057 ASDB 141 219 193 383 BEMB 1086 1968 2353 3764 CADB 273 677 750 882 CHAB 484 784 985 1360 CICB 272 689 748 896 CROB 251 402 390 765 DIOA 295 658 661 1030 EASB 248 816 875 830 EVEB 106 342 355 655 FAIB 665 1226 1111 2465 FUTB 340 573 406 835 HBKB 316 579 636 969 HEMB 219 476 406 817 JIUB 328 640 780 1025 KESB 284 749 719 1189 KIUB 327 907 1013 1195 KOLB 381 659 820 1112 KRUB 215 474 443 635 LIBB 302 380 514 807 MALB 261 723 867 910 MANB 262 593 622 974 MATB 292 373 575 1121 METB 560 663 766 1826 MIAB 240 832 832 1088 MORB 279 712 791 911 MSPB 326 781 706 1089 NOWB 273 441 293 936 PAQB 381 719 937 964 PDMB 235 625 666 1067 REUB 242 680 686 919 REZB 561 520 434 1620 RIPB 401 693 927 1584 ROTB 817 1481 1184 3112 SAKB 384 848 897 980 SALB 212 655 547 799 SANB 290 689 780 1192 SCRB 247 689 750 928 SODB 297 811 885 976 SPJB 978 2163 2298 3493 STJB 311 937 1000 1278 SYPB 847 1185 1368 2591 THUB 786 1598 1634 3002 TLHA 454 526 479 1136 TRIB 196 749 747 1025 YASB 269 818 804 1127 YELB 571 876 954 2138 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 0 433 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 20.2 16.8 19.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -5.5 +- 1.8 mm TY = 9.0 +- 1.8 mm TZ = -8.4 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.7 +- 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 1.97 0.66 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr