****************************************************************************** dorisreport 20-Jul-2006 21:49:47 Message No 0639 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1379 = 06162 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1379 from 11-06-2006 to 17-06-2006 DORIS name (using day of start): 06162 Days of year: from 2006/162 to 2006/168 ============================================================== 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/ign06162wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06162wd04.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 1379 from 11-06-2006 to 17-06-2006 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 -------------------------------------------------------- 11-06-2006 21542 25 21517 0.1 12-06-2006 21509 9 21500 0.0 13-06-2006 21494 74 21420 0.3 14-06-2006 21456 54 21402 0.3 15-06-2006 22397 21 22376 0.1 16-06-2006 20371 34 20337 0.2 17-06-2006 19825 5 19820 0.0 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 5838 6125 5969 5588 6242 6122 6041 SPOT2 4404 4355 4339 4338 4272 2889 2438 SPOT4 4661 4615 4523 4658 4824 4673 4565 SPOT5 6614 6405 6589 6818 7038 6653 6776 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.417 0.404 0.409 0.439 0.422 0.450 0.420 SPOT2 0.426 0.424 0.426 0.420 0.447 0.463 0.510 SPOT4 0.445 0.441 0.435 0.405 0.437 0.426 0.403 SPOT5 0.359 0.366 0.365 0.379 0.382 0.379 0.361 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 1400 1451 1423 1395 1478 1336 1399 AMTB 450 477 541 418 500 442 390 ASDB 272 390 376 347 339 277 342 BEMB 1653 1711 1588 1454 1657 1676 1321 CHAB 691 719 712 709 662 648 634 CROB 333 287 348 327 333 306 361 DIOB 194 225 322 378 447 426 392 EASB 512 454 463 520 400 408 460 EVEB 240 295 249 199 209 244 186 FAIB o 1062 1043 1027 956 1074 926 970 FUTB 420 368 460 405 434 259 410 GAVB 282 227 300 254 223 260 207 GREB 560 522 560 476 525 495 488 HBKB 0 0 0 288 514 367 484 HEMB 402 386 414 347 307 357 357 JIUB 538 493 386 529 502 418 400 KESB 595 537 537 543 498 525 535 KIUB 599 594 587 545 609 481 471 KOLB 540 546 539 488 582 538 436 KRUB 480 496 391 495 479 538 413 LICB 367 391 380 391 446 355 378 MAHB 382 431 331 371 385 362 343 MALB 477 380 449 336 434 384 391 MANB o 463 458 474 455 480 465 380 MATB 442 407 525 414 429 337 359 METB 763 700 673 665 730 633 617 MIAB 391 388 472 424 472 438 427 MONB 544 548 512 533 509 490 508 MORB 468 527 454 473 540 422 422 MSPB 549 555 488 486 586 497 541 PAQB 501 491 500 521 547 372 443 PDMB 464 437 504 465 473 395 490 REUB 390 393 380 340 360 339 305 REZB 744 645 756 645 716 660 693 RIPB 617 635 610 646 689 590 524 ROTB 1152 1072 1135 1033 1105 1192 1086 SALB 429 473 523 448 368 452 521 SANB 569 585 571 523 630 589 445 SCRB 527 518 447 504 506 427 475 SODB o 487 469 439 422 460 408 371 SPJB 1484 1464 1487 1477 1468 1377 1371 SYPB 1405 1397 1347 1318 1380 1260 1206 TLHA 515 495 502 498 587 425 486 TRIB o 494 474 585 454 424 535 423 YASB 519 569 576 495 461 568 507 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- CICB 191 202 168 406 534 334 394 this is due to the lack of data or to some stations related problems as described below CICB 21 5 2006 18 6 2006 equipment problem, received on SPOT2 only 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3818 1509 1735 3102 AMTB 1212 549 610 1037 ASDB 856 398 493 762 BEMB 4318 1542 1776 3829 CHAB 1651 982 1091 1314 CROB 846 355 422 777 DIOB 599 678 796 442 EASB 1032 671 872 1000 EVEB 408 273 373 636 FAIB 2760 896 1208 2528 FUTB 1029 463 636 831 GAVB 1106 0 0 796 GREB 1455 609 662 1166 HBKB 685 202 391 467 HEMB 1000 408 413 936 JIUB 1254 663 776 898 KESB 1447 571 751 1194 KIUB 1330 842 1043 1108 KOLB 1235 702 1011 1002 KRUB 1179 645 679 934 LICB 959 453 538 921 MAHB 1031 317 557 888 MALB 1029 490 697 880 MANB 1237 600 630 904 MATB 1084 418 578 983 METB 1819 625 811 1732 MIAB 1153 487 574 968 MONB 1286 639 805 1102 MORB 1101 645 844 910 MSPB 1272 662 836 1111 PAQB 1085 697 904 965 PDMB 1096 595 664 1075 REUB 879 489 491 811 REZB 2089 570 644 1746 RIPB 1865 495 617 1493 ROTB 3273 829 850 3096 SALB 1204 562 630 1015 SANB 1321 816 927 1080 SCRB 1164 689 758 969 SODB 1149 556 589 934 SPJB 3880 1425 1773 3365 SYPB 3522 1360 1576 3140 TLHA 1619 354 578 1122 TRIB 1155 628 802 1007 YASB 1234 784 853 1013 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- CICB 652 647 688 399 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 17.8 21.4 16.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -24.4 +- 2.0 mm TY = 9.2 +- 2.0 mm TZ = 43.2 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.1 +- 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 0.79 0.89 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr