****************************************************************************** dorisreport 22-Aug-2006 22:08:36 Message No 0667 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1384 = 06197 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1384 from 16-07-2006 to 22-07-2006 DORIS name (using day of start): 06197 Days of year: from 2006/197 to 2006/203 ============================================================== 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/ign06197wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06197wd04.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 1384 from 16-07-2006 to 22-07-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.55 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 16-07-2006 22216 40 22176 0.2 17-07-2006 22559 7 22552 0.0 18-07-2006 21514 13 21501 0.1 19-07-2006 16194 15 16179 0.1 20-07-2006 20446 15 20431 0.1 21-07-2006 21218 12 21206 0.1 22-07-2006 21054 11 21043 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 6104 6446 6012 5877 6016 5914 5722 SPOT2 4333 4485 4517 4409 4267 4160 4201 SPOT4 4688 4851 4505 2439 4476 4427 4612 SPOT5 7051 6770 6467 3454 5672 6705 6508 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.402 0.434 0.409 0.453 0.403 0.411 0.406 SPOT2 0.412 0.411 0.413 0.412 0.423 0.441 0.420 SPOT4 0.424 0.415 0.413 0.418 0.423 0.421 0.449 SPOT5 0.366 0.380 0.366 0.398 0.360 0.375 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 1411 1512 1460 1030 1396 1395 1462 AMTB 467 540 507 374 482 515 520 ASDB 288 346 398 235 362 390 299 CHAB 696 711 718 543 707 694 710 CICB 474 527 455 359 449 469 471 DIOB 394 425 456 370 445 443 411 DJIB 491 443 463 399 490 435 440 EASB 460 443 472 397 449 473 505 EVEB 226 218 277 217 204 255 230 FAIB o 1078 996 1007 959 1069 999 990 FUTB 462 366 405 345 452 386 353 GAVB 227 246 242 137 223 257 228 GREB 470 541 539 460 400 495 589 HBKB 484 487 457 425 581 466 527 HEMB 392 329 489 300 351 371 383 KESB 564 533 526 439 536 533 518 KIUB 569 601 557 448 567 525 503 KOLB 496 597 565 436 591 583 519 KRUB 472 504 420 351 437 460 492 LICB 401 431 362 239 478 413 408 MAHB 379 375 295 264 405 380 363 MALB 420 445 415 239 343 273 399 MANB o 471 504 437 340 380 472 451 MATB 443 402 476 474 481 454 347 METB 717 705 670 483 672 710 693 MIAB 448 462 478 302 364 494 472 MONB 555 527 511 447 554 526 579 MORB 491 496 436 368 481 504 465 MSPB 558 561 560 367 516 496 596 PAQB 562 508 497 387 588 535 506 PDMB 435 471 491 413 400 447 503 REUB 293 407 380 279 403 422 362 REZB 704 729 806 555 554 633 699 RIPB 611 617 588 505 601 726 586 ROTB 1180 1097 1056 782 1021 1046 1142 SALB 458 419 525 372 386 482 517 SANB 595 634 558 412 492 618 560 SCRB 494 485 425 369 455 478 494 SODB o 498 499 415 340 515 453 412 SPJB 1506 1461 1491 1041 1376 1570 1496 SYPB 1331 1363 1283 1274 1376 1343 1377 THUB 1371 1286 430 0 0 0 0 TLHA 557 506 527 391 515 538 595 TRIB o 469 467 553 356 450 567 413 YASB 514 576 623 423 440 552 547 YELB 794 769 788 683 813 814 697 6.2) stations rejected from solution ------------------------------------ all available stations were processed and given in the output sinex solutions 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3812 1668 1605 2869 AMTB 1274 693 628 1020 ASDB 827 478 411 743 CHAB 1664 1087 1071 1205 CICB 1213 669 703 814 DIOB 912 737 643 843 DJIB 1144 676 677 884 EASB 1079 846 784 834 EVEB 495 316 340 532 FAIB 2796 1014 1240 2347 FUTB 1083 584 519 830 GAVB 891 0 0 771 GREB 1433 636 600 1061 HBKB 1293 715 653 924 HEMB 1037 470 472 806 KESB 1434 727 604 1083 KIUB 1321 891 910 993 KOLB 1278 817 1006 954 KRUB 1179 658 669 795 LICB 993 620 468 804 MAHB 984 445 417 823 MALB 988 641 544 571 MANB 1230 601 595 812 MATB 1177 445 637 997 METB 1830 767 758 1494 MIAB 1157 496 567 978 MONB 1314 827 788 969 MORB 1123 748 669 880 MSPB 1307 776 678 1060 PAQB 1215 842 921 869 PDMB 1201 649 553 936 REUB 889 460 569 798 REZB 2088 613 595 1553 RIPB 1910 547 535 1384 ROTB 3428 798 788 2550 SALB 1198 730 580 838 SANB 1339 879 873 1024 SCRB 1084 723 760 782 SODB 1204 608 602 891 SPJB 3956 1674 1701 2911 SYPB 3589 1555 1550 2951 THUB 1174 556 530 914 TLHA 1668 427 605 1156 TRIB 1140 664 665 991 YASB 1281 831 790 991 YELB 1879 854 822 1970 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- 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 14.4 16.6 15.8 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -22.3 +- 1.8 mm TY = 18.4 +- 1.8 mm TZ = 39.5 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.6 +- 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 0.77 0.76 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr