****************************************************************************** dorisreport 28-Sep-2006 23:08:41 Message No 0694 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1389 = 06232 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1389 from 20-08-2006 to 26-08-2006 DORIS name (using day of start): 06232 Days of year: from 2006/232 to 2006/238 ============================================================== 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/ign06232wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06232wd04.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 1389 from 20-08-2006 to 26-08-2006 Total number of stations = 49 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 -------------------------------------------------------- 20-08-2006 19199 13 19186 0.1 21-08-2006 18993 15 18978 0.1 22-08-2006 21221 9 21212 0.0 23-08-2006 21165 10 21155 0.0 24-08-2006 21538 5 21533 0.0 25-08-2006 22446 7 22439 0.0 26-08-2006 22966 9 22957 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 5709 6015 5772 5908 6110 6450 6408 SPOT2 2484 1764 4362 4409 4364 4323 4596 SPOT4 4436 4558 4681 4497 4597 4745 4907 SPOT5 6557 6641 6397 6341 6462 6921 7046 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.396 0.403 0.409 0.399 0.415 0.391 0.394 SPOT2 0.407 0.394 0.420 0.441 0.410 0.399 0.441 SPOT4 0.394 0.406 0.434 0.410 0.445 0.431 0.420 SPOT5 0.351 0.362 0.361 0.365 0.355 0.355 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 1294 1475 1449 1429 1486 1419 1400 AMTB 396 473 540 480 490 478 490 ARFB 0 0 0 139 95 112 119 ASDB 0 0 176 273 409 343 318 CADB 492 521 562 437 495 460 414 CHAB 584 574 695 652 671 673 681 CICB 402 449 452 426 527 421 456 CROB 335 357 371 349 304 307 366 DIOB 267 302 433 414 418 365 435 DJIB 447 412 436 431 453 463 466 EASB 440 317 452 531 467 439 506 EVEB 201 208 259 276 296 283 240 FAIB o 0 0 0 0 0 987 1023 FUTB 405 440 394 417 444 405 440 GAVB 173 250 236 178 208 168 227 GREB 405 445 520 531 469 560 501 HBKB 461 508 410 511 516 516 541 HEMB 331 284 167 200 389 369 404 JIUB 0 0 0 0 269 296 426 KESB 504 414 538 596 545 567 513 KIUB 544 513 604 528 616 584 556 KOLB 486 519 584 538 602 562 527 KRUB 451 394 479 476 479 468 489 LICB 415 373 411 268 393 442 426 MAHB 318 348 323 367 410 336 385 MALB 398 365 401 471 438 444 447 MATB 0 0 0 0 0 238 425 METB 638 682 719 742 702 699 683 MIAB 376 388 505 408 330 417 418 MONB 546 515 519 545 543 549 587 MORB 387 415 459 432 535 466 500 NOWB 0 0 0 0 0 413 392 PAQB 486 457 509 536 572 482 529 PDMB 411 408 540 506 442 469 535 REUB 374 361 370 354 364 375 323 REZB 648 669 574 740 641 580 747 RIPB 697 754 733 674 708 683 719 ROTB 1387 1236 1346 1389 1452 1359 1381 SALB 495 331 523 455 469 468 491 SANB 518 532 599 481 488 498 417 SCRB 473 413 381 513 466 396 499 SODB o 451 434 422 332 223 227 0 SPJB 1411 1379 1537 1516 1474 1545 1448 SYPB 1322 1275 1405 1494 1425 1457 1441 THUB 1334 1171 1333 1449 1334 1337 1343 TLHA 510 551 610 575 494 500 543 TRIB o 493 406 505 506 443 523 480 YASB 487 414 590 594 519 599 547 YELB 811 781 796 833 883 823 753 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 3865 1593 1696 3182 AMTB 1252 533 687 1084 ARFB 492 0 0 0 ASDB 566 217 327 528 CADB 1148 629 845 953 CHAB 1441 789 1101 1381 CICB 1213 515 689 947 CROB 960 330 449 752 DIOB 885 589 607 765 DJIB 1141 514 740 931 EASB 1153 618 871 887 EVEB 496 309 363 666 FAIB 811 315 310 668 FUTB 1067 569 601 953 GAVB 887 30 0 654 GREB 1421 445 677 1133 HBKB 1306 541 758 1049 HEMB 862 353 390 705 JIUB 446 134 277 247 KESB 1408 578 716 1153 KIUB 1295 801 1013 1198 KOLB 1279 765 934 1086 KRUB 1180 606 682 919 LICB 1006 488 547 822 MAHB 979 360 424 907 MALB 1019 546 712 877 MATB 219 117 100 259 METB 1861 655 847 1735 MIAB 1127 401 525 957 MONB 1322 725 885 1093 MORB 1165 544 732 937 NOWB 326 130 152 241 PAQB 1213 720 867 1005 PDMB 1231 554 664 1036 REUB 883 383 508 927 REZB 2126 520 645 1494 RIPB 2186 552 629 1784 ROTB 3892 1364 1534 3062 SALB 1203 608 747 909 SANB 1281 581 730 1135 SCRB 1075 530 710 976 SODB 895 243 463 641 SPJB 3948 1475 1741 3463 SYPB 3757 1463 1806 3109 THUB 3465 1415 1722 2993 TLHA 1663 460 609 1259 TRIB 1054 711 806 977 YASB 1351 759 888 1004 YELB 1999 775 920 2225 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 17.5 16.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -21.0 +- 2.3 mm TY = 16.0 +- 2.2 mm TZ = 23.1 +- 2.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.7 +- 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 1.31 0.88 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr