****************************************************************************** dorisreport 20-Apr-2006 17:30:57 Message No 0564 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1366 = 06071 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1366 from 12-03-2006 to 18-03-2006 DORIS name (using day of start): 06071 Days of year: from 2006/71 to 2006/77 ============================================================== 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/ign06071wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06071wd04.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 1366 from 12-03-2006 to 18-03-2006 Total number of stations = 45 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.89 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 12-03-2006 19947 10 19937 0.1 13-03-2006 23379 45 23334 0.2 14-03-2006 22141 13 22128 0.1 15-03-2006 22615 27 22588 0.1 16-03-2006 23460 54 23406 0.2 17-03-2006 23334 17 23317 0.1 18-03-2006 23980 24 23956 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 6481 6458 6071 6383 6415 6402 6727 SPOT2 1581 4577 4168 4669 4790 4638 4624 SPOT4 4930 4996 4912 4830 4946 4986 5174 SPOT5 6945 7303 6977 6706 7255 7291 7431 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.389 0.400 0.388 0.396 0.420 0.414 0.423 SPOT2 0.416 0.410 0.411 0.413 0.413 0.412 0.431 SPOT4 0.410 0.433 0.425 0.422 0.423 0.409 0.412 SPOT5 0.356 0.356 0.357 0.367 0.363 0.364 0.377 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 1328 1396 1419 1372 1384 1431 1466 AMTB 454 509 527 457 495 478 496 ASDB 281 394 278 301 361 242 320 BEMB 1332 1620 1609 1594 1633 1484 1615 CADB 0 0 0 0 227 518 538 CHAB 652 637 745 708 712 709 678 CROB 280 408 380 367 330 268 378 EASB 421 482 485 462 523 536 471 EVEB 191 281 238 289 296 250 254 FAIB o 996 1024 969 1017 1012 1122 1006 FUTB 431 452 420 406 437 440 465 GREB 357 487 552 502 551 518 499 HBKB 506 504 516 502 482 494 577 HEMB 311 379 320 329 396 385 292 JIUB 459 510 510 553 484 585 584 KESB 420 491 525 562 562 532 509 KIUB 584 619 635 610 649 623 643 KOLB 555 583 562 569 497 528 588 KRUB 350 404 393 381 475 464 421 LICB 355 378 388 490 282 364 460 MAHB 172 357 304 366 380 361 381 MALB 373 432 443 394 410 496 435 MANB o 399 482 490 473 452 398 509 METB 679 796 762 764 821 792 786 MIAB 420 453 435 492 452 373 477 MONB 444 505 593 484 537 601 532 MORB 328 504 453 395 464 434 545 MSPB 420 532 519 517 461 484 525 NOWB 387 363 258 427 334 325 404 PAQB 524 507 525 582 536 544 559 PDMB 430 608 458 420 532 510 539 REUB 378 350 401 387 331 368 368 REZB 529 717 574 684 692 681 670 RIPB 561 668 672 539 642 616 683 ROTB 1023 1133 1063 1133 1093 1127 1151 SANB 499 617 577 615 568 555 627 SCRB 448 458 483 519 481 375 463 SODB o 395 420 461 210 390 483 476 SPJB 1260 1506 1467 1366 1530 1544 1464 SYPB 1243 1276 1394 1218 1344 1341 1373 THUB 1219 1342 1201 1242 1291 1484 1333 TLHA 527 582 547 637 587 534 566 TRIB o 351 551 375 528 561 459 492 YASB 449 566 518 576 603 495 419 YELB 808 877 838 850 909 956 917 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 476 428 427 380 474 449 439 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 3831 1506 1676 3075 AMTB 1292 596 632 1133 ASDB 662 434 514 746 BEMB 4209 1550 1866 3659 CADB 444 200 301 417 CHAB 1647 1012 1093 1335 CROB 921 403 504 715 EASB 1061 869 880 943 EVEB 522 330 338 686 FAIB 2770 968 1202 2490 FUTB 1108 567 601 982 GREB 1310 591 594 1173 HBKB 1358 600 793 1036 HEMB 916 459 461 767 JIUB 1342 664 859 1055 KESB 1328 672 722 1069 KIUB 1496 936 1094 1188 KOLB 1319 773 968 1081 KRUB 1152 494 682 761 LICB 1024 528 596 759 MAHB 827 339 503 823 MALB 1080 602 693 849 MANB 1285 486 702 945 METB 2225 657 895 1840 MIAB 1165 486 620 1020 MONB 1273 754 874 1004 MORB 1027 709 684 884 MSPB 1285 552 796 1000 NOWB 958 317 500 887 PAQB 1274 811 912 1037 PDMB 1194 695 810 1017 REUB 936 473 516 870 REZB 1955 399 759 1590 RIPB 1833 583 564 1565 ROTB 3455 580 881 3058 SANB 1426 710 921 1228 SCRB 1106 633 757 939 SODB 1096 478 557 877 SPJB 3720 1631 1690 3370 SYPB 3487 1394 1541 3077 THUB 3234 1544 1786 2812 TLHA 1662 446 788 1237 TRIB 1109 646 733 1028 YASB 1299 658 933 954 YELB 2555 836 883 2113 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- MATB 1209 472 490 1062 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 17.7 20.9 20.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -17.4 +- 1.9 mm TY = 28.8 +- 1.8 mm TZ = 46.0 +- 1.8 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.0 +- 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 1.18 0.68 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr