****************************************************************************** dorisreport 19-Dec-2006 23:21:26 Message No 0752 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1400 = 06309 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1400 from 05-11-2006 to 11-11-2006 DORIS name (using day of start): 06309 Days of year: from 2006/309 to 2006/315 ============================================================== 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/ign06309wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06309wd04.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 1400 from 05-11-2006 to 11-11-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.32 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 05-11-2006 21505 16 21489 0.1 06-11-2006 21261 21 21240 0.1 07-11-2006 20115 17 20098 0.1 08-11-2006 20177 18 20159 0.1 09-11-2006 21190 15 21175 0.1 10-11-2006 20011 6 20005 0.0 11-11-2006 20751 18 20733 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 5957 5920 5573 5624 5997 5523 5732 SPOT2 4278 4038 3781 3913 4201 3952 3914 SPOT4 4479 4378 4333 4389 4469 4282 4467 SPOT5 6775 6904 6411 6233 6508 6248 6620 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.390 0.392 0.382 0.400 0.411 0.398 0.418 SPOT2 0.424 0.430 0.483 0.423 0.453 0.441 0.481 SPOT4 0.400 0.423 0.425 0.411 0.397 0.408 0.403 SPOT5 0.348 0.357 0.364 0.359 0.375 0.350 0.367 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 1407 1421 1388 1480 1481 1432 1434 AMTB 552 490 532 595 543 508 535 ARFB 381 353 384 400 367 371 351 ASDB 343 305 282 313 335 373 310 CADB 416 463 402 459 341 339 423 CHAB 527 528 538 518 549 518 485 CICB 486 451 452 443 499 374 458 CROB 481 464 531 476 442 373 502 DIOB 483 492 449 383 404 502 476 DJIB 458 443 459 452 423 466 467 EVEB 261 265 237 228 299 290 271 FAIB o 999 1058 1030 1044 1106 1009 1063 FUTB 438 383 454 447 435 457 423 GAVB 218 224 240 248 230 204 210 GREB 467 434 533 558 526 480 522 HEMB 324 142 0 0 0 0 0 JIUB 578 549 585 596 554 560 539 KIUB 618 581 617 550 601 535 637 KOLB 585 588 542 580 610 521 553 KRUB 260 377 230 340 297 284 321 LICB 373 326 384 438 454 390 466 MAHB 420 348 360 410 384 136 339 MALB 452 459 451 355 378 426 443 MATB 577 566 13 0 279 599 559 METB 741 707 716 750 737 702 706 MIAB 398 455 475 452 446 448 395 MONB 531 566 571 526 507 529 607 MORB 484 402 490 563 445 492 456 NOWB 332 436 391 311 435 344 364 PAQB 501 453 458 460 446 452 481 PDMB 449 389 600 374 339 356 393 REUB 420 444 397 446 435 310 437 REZB 681 618 728 584 653 677 701 RIPB 680 705 749 704 665 696 693 ROTB 1474 1402 1419 1419 1400 1459 1421 SALB 31 59 117 219 344 535 413 SANB 497 418 480 564 532 483 431 SCRB 474 453 385 469 465 451 477 SPJB 1398 1431 1577 1535 1510 1369 1507 STJB 624 563 641 634 610 571 618 SYPB 1489 1417 882 540 1536 1449 1448 THUB 1241 1346 738 900 875 0 0 TLHA 500 503 550 613 562 482 479 TRIB o 40 136 75 28 101 243 408 YASB 464 559 491 557 649 561 518 YELB 935 894 883 911 856 922 926 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 3801 1680 1737 3144 AMTB 1392 561 837 1230 ARFB 1034 340 487 907 ASDB 856 370 451 773 CADB 973 586 640 808 CHAB 1025 651 945 1147 CICB 1115 640 710 928 CROB 1322 441 595 1108 DIOB 922 887 805 745 DJIB 1083 659 752 923 EVEB 499 393 388 647 FAIB 2825 1089 1152 2536 FUTB 1125 529 624 974 GAVB 893 0 0 763 GREB 1333 597 642 1120 HEMB 187 74 51 186 JIUB 1412 715 985 1136 KIUB 1368 948 982 1207 KOLB 1313 947 943 1007 KRUB 919 439 318 601 LICB 999 559 624 847 MAHB 943 424 350 860 MALB 911 664 689 879 MATB 888 457 551 831 METB 1872 783 851 1757 MIAB 1140 593 562 960 MONB 1324 711 858 1143 MORB 1172 634 796 955 NOWB 1084 215 553 933 PAQB 1221 647 584 1019 PDMB 1212 457 570 880 REUB 1067 555 525 942 REZB 2044 445 582 1753 RIPB 2120 595 628 1734 ROTB 3856 1513 1635 3284 SALB 697 440 329 457 SANB 1235 684 617 1079 SCRB 1172 611 640 959 SPJB 3814 1619 1781 3403 STJB 1410 860 848 1338 SYPB 3240 1427 1599 2766 THUB 1754 964 896 1642 TLHA 1633 379 559 1286 TRIB 76 241 245 564 YASB 1283 832 950 973 YELB 2590 880 906 2168 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 16.1 16.0 15.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -16.6 +- 2.1 mm TY = -10.5 +- 2.2 mm TZ = -4.3 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.2 +- 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 1.49 0.77 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