****************************************************************************** dorisreport 15-Nov-2005 23:26:37 Message No 0411 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Updated Report for week 1334 = 05212 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1334 from 31-07-2005 to 06-08-2005 DORIS name (using day of start): 05212 Days of year: from 2005/212 to 2005/218 ============================================================== 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/ign05212wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05212wd04.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 1334 from 31-07-2005 to 06-08-2005 Total number of stations = 48 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 -------------------------------------------------------- 31-07-2005 25691 18 25673 0.1 01-08-2005 26295 52 26243 0.2 02-08-2005 25502 14 25488 0.1 03-08-2005 26121 40 26081 0.2 04-08-2005 26556 36 26520 0.1 05-08-2005 26507 29 26478 0.1 06-08-2005 26024 953 25071 3.7 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 7483 8145 7739 7860 8242 7899 7626 SPOT2 4792 5187 4801 4906 4794 4969 4900 SPOT4 5333 5102 5053 5238 5356 5412 5099 SPOT5 8065 7809 7895 8077 8128 8198 7446 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.425 0.419 0.425 0.426 0.427 0.421 0.434 SPOT2 0.430 0.438 0.430 0.456 0.451 0.444 0.446 SPOT4 0.423 0.414 0.440 0.427 0.443 0.441 0.426 SPOT5 0.378 0.381 0.376 0.375 0.384 0.374 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 1438 1427 1389 1338 1446 1429 1385 AMTB 156 263 149 147 185 185 217 ASDB 206 230 309 314 328 337 326 BEMB 1593 1619 1660 1496 1544 1634 1552 CADB 468 569 517 420 489 445 455 CICB 421 489 419 439 518 426 430 CROB 337 411 414 350 392 376 429 DIOA o 386 451 495 446 426 466 466 DJIB 201 234 178 173 212 200 241 EASB 473 462 425 225 358 265 490 EVEB 251 235 256 256 302 243 234 FAIB o 1093 955 972 986 978 993 1060 FUTB 506 456 341 352 368 455 385 GALA 91 117 104 102 121 94 0 GREB 311 274 270 324 258 353 275 HBKB 440 481 399 390 420 371 409 HEMB 276 329 328 355 397 309 278 JIUB 298 179 149 401 443 463 472 KIUB 515 579 482 532 535 512 508 KOLB 499 586 435 460 475 461 439 KRUB 349 488 461 449 448 418 484 LIBB 354 449 416 338 365 442 327 MALB 442 434 406 441 469 446 490 MANB o 0 0 0 187 351 437 369 MATB 443 360 372 463 376 448 423 METB 593 641 655 646 647 662 636 MIAB 413 398 481 394 440 477 400 MORB 332 439 468 458 542 471 456 MSPB 595 543 597 593 603 633 498 PAQB 537 526 423 475 463 496 427 PDMB 382 469 508 446 390 417 425 REUB 410 446 344 376 402 403 346 REZB 548 492 633 600 582 553 572 RIPB 596 684 627 595 555 625 631 ROTB 1138 1123 1161 1248 1257 1095 1140 SAKB 336 220 235 374 333 339 755 SALB 78 98 192 374 439 232 157 SANB 482 515 544 492 489 515 400 SCRB 105 103 39 97 102 111 136 SODB o 506 548 476 483 517 504 513 SPJB 1565 1485 1467 1545 1454 1530 1460 STJB 589 568 562 550 545 595 321 SYPB 1296 1345 1273 1348 1277 1307 1323 THUB 1348 1175 1091 1211 1048 849 805 TLHA 450 514 414 444 431 445 484 TRIB o 410 480 534 419 437 559 434 YASB 483 457 588 485 476 552 482 YELB 866 837 758 823 801 839 836 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 130 144 133 307 161 135 271 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 3607 1965 1973 2948 AMTB 405 60 310 580 ASDB 732 395 450 649 BEMB 3869 2022 2240 4368 CADB 1063 730 817 1000 CICB 1059 680 678 1196 CROB 1003 428 564 927 DIOA 938 757 822 857 DJIB 429 447 204 419 EASB 802 808 716 729 EVEB 457 372 327 685 FAIB 2550 1180 1161 2974 FUTB 927 636 573 963 GALA 0 664 0 0 GREB 840 61 488 1023 HBKB 718 570 796 1052 HEMB 792 440 458 915 JIUB 706 441 633 862 KIUB 1262 842 813 1100 KOLB 1113 658 787 1350 KRUB 1075 679 615 1144 LIBB 935 383 672 1112 MALB 960 736 786 943 MANB 472 340 222 429 MATB 937 497 651 1028 METB 1624 683 858 1583 MIAB 1103 597 618 937 MORB 1009 776 805 848 MSPB 1341 902 1012 1121 PAQB 1111 700 868 1176 PDMB 970 568 679 1285 REUB 920 398 634 1002 REZB 1610 624 383 1661 RIPB 1599 647 909 1495 ROTB 3369 1511 1063 2876 SAKB 538 805 807 702 SALB 495 567 303 325 SANB 1189 679 694 1380 SCRB 802 0 0 0 SODB 1065 823 907 1229 SPJB 3316 2149 2380 3482 STJB 1268 760 895 1100 SYPB 3545 1340 1698 3717 THUB 2684 1641 1454 2280 TLHA 1251 528 432 1476 TRIB 1021 732 815 1033 YASB 1216 798 783 1022 YELB 2219 861 945 2546 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 345 117 548 331 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 12.3 10.4 11.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -27.7 +- 1.9 mm TY = 24.0 +- 1.7 mm TZ = 40.3 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.9 +- 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 1.42 0.81 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr