****************************************************************************** dorisreport 12-May-2006 16:41:39 Message No 0583 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1369 = 06092 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1369 from 02-04-2006 to 08-04-2006 DORIS name (using day of start): 06092 Days of year: from 2006/92 to 2006/98 ============================================================== 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/ign06092wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06092wd04.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 1369 from 02-04-2006 to 08-04-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.74 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 02-04-2006 19106 20 19086 0.1 03-04-2006 22857 20 22837 0.1 04-04-2006 22787 84 22703 0.4 05-04-2006 23343 11 23332 0.0 06-04-2006 17304 14 17290 0.1 07-04-2006 16571 14 16557 0.1 08-04-2006 19123 15 19108 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 6545 6573 6390 6452 215 0 1872 SPOT2 17 4207 4519 4864 4739 4273 4701 SPOT4 5000 4769 4895 4900 4910 4935 5093 SPOT5 7524 7288 6899 7116 7426 7349 7442 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.411 0.419 0.395 0.411 0.326 0.000 0.360 SPOT2 0.237 0.414 0.418 0.442 0.423 0.419 0.428 SPOT4 0.401 0.420 0.400 0.409 0.405 0.415 0.413 SPOT5 0.376 0.361 0.369 0.368 0.356 0.359 0.366 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 1169 1450 1453 1454 942 929 1118 AMTB 386 493 523 451 333 310 426 ASDB 289 355 314 368 230 267 298 BEMB 1364 1664 1605 1601 1132 1016 1010 CADB 437 600 536 487 291 320 407 CHAB 564 0 0 330 493 400 454 CROB 268 365 358 320 191 191 308 EASB 378 416 478 524 358 368 360 EVEB 153 255 275 275 170 189 207 FAIB o 947 1036 981 1143 645 665 732 FUTB 320 390 410 400 293 251 351 GAVB 300 369 346 266 106 156 248 GREB 371 490 545 518 351 273 367 HEMB 316 287 394 419 246 251 336 JIUB 502 484 462 492 340 330 356 KESB 401 474 548 557 355 327 399 KIUB 486 605 603 611 446 416 434 KOLB 390 580 569 516 374 359 465 KRUB 362 467 453 454 311 334 276 LICB 320 351 393 388 227 302 254 MAHB 306 279 183 350 268 228 269 MALB 308 344 336 365 326 253 221 MANB o 363 508 464 314 316 279 325 METB 640 749 731 736 500 472 577 MIAB 340 496 498 455 254 283 336 MONB 499 58 474 544 374 393 481 MORB 362 484 443 355 371 280 354 MSPB 415 588 532 566 327 295 381 NOWB 268 477 313 333 247 199 134 PAQB 431 505 470 439 315 348 402 PDMB 434 508 577 522 342 353 382 REUB 334 350 352 379 246 270 265 REZB 632 736 762 718 359 322 487 RIPB 528 614 552 562 402 401 429 ROTB 1023 1200 1155 1110 597 640 641 SANB 469 643 624 537 360 318 438 SCRB 430 392 295 522 279 244 386 SODB o 411 410 316 314 280 305 340 SPJB 1238 1441 1441 1505 1032 919 1173 STJB 480 566 601 615 467 391 446 SYPB 1129 1372 1395 1359 918 829 948 THUB 1159 1256 1278 1380 889 862 1049 TLHA 488 577 530 604 357 338 408 TRIB o 320 450 540 530 396 323 389 YASB 399 545 566 577 378 396 355 YELB 776 882 849 908 528 582 685 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 364 427 329 410 336 324 351 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 2503 1472 1691 3133 AMTB 827 561 628 1103 ASDB 452 471 542 789 BEMB 2595 1560 1851 3719 CADB 718 662 782 1083 CHAB 381 512 663 810 CROB 531 333 497 738 EASB 661 707 882 900 EVEB 284 339 299 658 FAIB 1755 913 1203 2521 FUTB 606 541 580 879 GAVB 768 0 0 1135 GREB 798 547 548 1184 HEMB 733 401 451 833 JIUB 739 616 858 974 KESB 877 622 690 1056 KIUB 859 813 1109 1167 KOLB 703 724 995 1043 KRUB 576 540 715 943 LICB 564 508 577 769 MAHB 465 335 487 769 MALB 566 490 602 698 MANB 690 457 731 894 METB 1223 644 862 1863 MIAB 698 436 622 1049 MONB 754 539 711 973 MORB 663 562 700 872 MSPB 861 555 783 1080 NOWB 559 260 487 775 PAQB 705 605 883 929 PDMB 766 648 821 1073 REUB 544 427 509 879 REZB 1317 441 768 1623 RIPB 1035 502 556 1531 ROTB 2008 657 886 3041 SANB 776 721 938 1151 SCRB 600 536 673 887 SODB 695 392 602 860 SPJB 2328 1427 1718 3513 STJB 927 740 777 1308 SYPB 2193 1266 1591 3145 THUB 2083 1430 1674 2896 TLHA 1060 425 808 1152 TRIB 692 641 742 1033 YASB 695 746 920 1053 YELB 1581 770 899 2138 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- MATB 669 407 573 1035 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 16.6 16.1 19.6 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -24.2 +- 2.1 mm TY = 14.0 +- 1.9 mm TZ = 109.4 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -0.8 +- 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 1.34 0.40 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr