****************************************************************************** dorisreport 15-Nov-2005 23:36:08 Message No 0412 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1335 = 05219 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1335 from 07-08-2005 to 13-08-2005 DORIS name (using day of start): 05219 Days of year: from 2005/219 to 2005/225 ============================================================== 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/ign05219wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05219wd04.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 1335 from 07-08-2005 to 13-08-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.27 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 07-08-2005 26451 48 26403 0.2 08-08-2005 26165 26 26139 0.1 09-08-2005 25228 36 25192 0.1 10-08-2005 26149 43 26106 0.2 11-08-2005 26704 598 26106 2.2 12-08-2005 26470 1758 24712 6.6 13-08-2005 26337 28 26309 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 8132 8260 7452 7863 8037 7963 8228 SPOT2 4587 4972 4998 4925 4865 4652 4799 SPOT4 5300 5427 5493 5399 5273 4977 5474 SPOT5 8384 7480 7249 7919 7931 7120 7808 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.430 0.424 0.423 0.440 0.427 0.438 0.440 SPOT2 0.417 0.430 0.432 0.462 0.460 0.445 0.420 SPOT4 0.425 0.426 0.423 0.447 0.434 0.454 0.432 SPOT5 0.394 0.392 0.380 0.392 0.371 0.377 0.389 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 1307 1387 1487 1387 1425 1238 1439 AMTB 161 171 160 138 216 190 227 ASDB 360 153 142 121 169 119 86 BEMB 1518 1585 1447 1604 1495 1623 1578 CADB 552 446 438 447 493 499 500 CICB 467 437 405 405 479 406 439 CROB 407 378 415 394 394 397 380 DIOA o 451 466 444 447 463 486 411 DJIB 186 199 220 224 214 251 236 EASB 426 464 477 467 461 479 368 EVEB 219 283 287 229 264 224 232 FAIB o 959 1032 1047 958 1000 978 1004 FUTB 437 411 460 414 484 410 469 GREB 205 212 196 249 271 227 204 HBKB 437 360 464 504 492 382 476 HEMB 246 285 387 281 245 368 299 JIUB 485 428 254 401 289 413 304 KIUB 534 511 516 559 523 465 407 KOLB 532 544 449 430 522 474 501 KRUB 444 489 453 428 498 471 470 LIBB 322 362 374 355 349 408 414 MALB 360 449 326 443 465 479 488 MANB o 445 313 309 332 368 422 410 MATB 453 426 466 489 420 480 425 METB 671 631 677 645 623 648 655 MIAB 452 486 370 416 397 454 414 MORB 551 450 485 522 435 479 529 MSPB 574 495 626 595 534 580 526 PAQB 529 510 420 537 533 493 518 PDMB 417 379 428 449 416 455 420 REUB 436 376 394 451 428 377 432 REZB 628 639 551 612 529 697 590 RIPB 598 539 621 516 588 634 625 ROTB 1253 1303 1057 1226 1153 1172 1159 SAKB 632 681 518 674 539 275 290 SALB 355 125 279 341 376 337 0 SANB 516 558 470 453 561 490 576 SCRB 145 112 147 142 111 145 134 SODB o 554 500 445 545 446 515 526 SPJB 1511 1390 1561 1528 1538 1548 1519 STJB 534 589 526 587 448 427 557 SYPB 1241 1368 1272 1226 1346 1266 1287 THUB 749 803 782 924 1068 1213 1161 TLHA 421 444 442 463 476 463 544 TRIB o 399 488 450 467 497 475 379 YASB 442 560 553 361 521 540 537 YELB 842 809 747 885 809 796 888 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 121 172 318 187 377 130 346 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 3521 1827 2039 2881 AMTB 344 65 323 575 ASDB 408 269 201 372 BEMB 3978 1801 2120 4422 CADB 1185 756 753 976 CICB 951 657 750 1144 CROB 1108 376 609 936 DIOA 965 694 771 960 DJIB 460 490 267 389 EASB 880 826 829 1046 EVEB 441 305 388 668 FAIB 2426 1180 1272 2946 FUTB 1046 603 804 905 GREB 782 65 237 732 HBKB 1116 704 681 890 HEMB 736 312 445 945 JIUB 898 596 613 724 KIUB 1223 834 821 988 KOLB 1161 720 948 1146 KRUB 1055 708 730 1161 LIBB 909 482 596 1025 MALB 921 674 806 872 MANB 863 588 571 793 MATB 1251 490 655 1038 METB 1748 780 787 1528 MIAB 1011 538 699 987 MORB 1122 778 853 973 MSPB 1347 767 908 1204 PAQB 1132 879 905 1126 PDMB 1047 617 621 1140 REUB 1042 486 738 880 REZB 1647 510 795 1603 RIPB 1634 753 631 1453 ROTB 3178 1342 1679 2779 SAKB 929 1036 951 993 SALB 558 492 365 548 SANB 1294 773 773 1356 SCRB 1084 0 0 0 SODB 1101 801 970 1149 SPJB 3277 2323 2305 3458 STJB 1269 830 685 1201 SYPB 3469 1426 1515 3708 THUB 2354 1512 1327 1962 TLHA 1426 490 528 1317 TRIB 1078 571 735 1127 YASB 1057 816 815 1093 YELB 2326 937 906 2330 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 627 168 583 340 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 15.4 13.8 11.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -18.9 +- 1.8 mm TY = 16.9 +- 1.6 mm TZ = 41.3 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -3.2 +- 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 1.96 0.71 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr