****************************************************************************** dorisreport 10-Sep-2007 11:00:18 Message No 0993 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1440 = 07224 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1440 from 12-08-2007 to 18-08-2007 DORIS name (using day of start): 07224 Days of year: from 2007/224 to 2007/230 ============================================================== Author: Pascal Willis 1) Contacts =========== Email pascal.willis@ign.fr Phone +33-1-4427-2484 FAX +33-1-4427-7340 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/ign07224wd05.snx.Z weekly sinex in ITRF2005 pub/doris/products/sinex_series/ignwd/ign07224wd06.snx.Z geocenter series in ITRF2005 pub/doris/products/geoc/ign07wd01.geoc.Z Earth Orientation Parameters time series in ITRF2005 pub/doris/products/eop/ign07wd01.eop.Z 3) Analysis Strategy ==================== The DORIS data have been processed using the Gipsy/Oasis software from 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 ITRF2005 pub/doris/products/sinex_series/ignwd/ignwd06.snx.dsc geocenter series in ITRF2005 pub/doris/products/geoc/ign07wd01.geoc.dsc Earth Orientation Parameters time series in ITRF2005 pub/doris/products/eop/ign07wd01.eop.dsc For references, the following papers are recommended : Willis, P., Y.E. Bar-Sever, G. Tavernier (2005), DORIS as a potential part of a Global Geodetic Observing System, J. Geodyn., 40(4-5), 494-501, DOI: 10.1016/j.jog.2005.06.011 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. Week 1405 = 06344 : Use GIPSY/OASIS software installed at Institut de Physique du Globe de Paris Week 1439 = 07217 : Provide all products in ITRF2005, using the latest DORIS internal cumulative solutin ign07d02 4) Global Statistics ==================== GPS week number 1440 from 12-08-2007 to 18-08-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.97 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 12-08-2007 23782 3 23779 0.0 13-08-2007 23566 8 23558 0.0 14-08-2007 23758 7 23751 0.0 15-08-2007 23757 9 23748 0.0 16-08-2007 23999 1 23998 0.0 17-08-2007 23505 31 23474 0.1 18-08-2007 23069 4 23065 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 6754 6727 6773 6590 6719 6490 6457 SPOT2 4218 4092 4252 4152 4382 4130 3891 SPOT4 5248 5126 5230 5352 5332 5283 5082 SPOT5 7559 7613 7496 7654 7565 7571 7635 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.410 0.396 0.404 0.411 0.421 0.435 0.415 SPOT2 0.459 0.440 0.435 0.451 0.444 0.433 0.451 SPOT4 0.434 0.444 0.433 0.435 0.419 0.431 0.419 SPOT5 0.370 0.368 0.383 0.386 0.384 0.379 0.368 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 o 1470 1405 1354 1410 1537 1395 1323 AMUB 515 442 501 480 461 457 465 ARFB 385 471 381 384 455 357 349 ASDB o 380 382 206 376 365 370 327 BEMB 1689 1785 1806 1797 1970 1817 1733 BETB 415 408 353 463 400 402 461 CADB 427 512 449 521 539 487 442 CHAB 626 698 688 664 740 688 685 CICB 462 483 483 468 482 452 460 CRPB 352 315 327 352 309 293 280 DIOB 360 492 467 436 426 375 431 DJIB 423 459 453 470 367 400 468 EASB 423 444 514 442 452 514 486 EVEB o 303 300 274 254 269 261 305 FAIB o 978 889 972 969 962 987 956 FUTB 276 392 384 419 386 344 398 GAVB 215 194 235 242 256 214 206 GREB 518 503 439 530 524 512 518 HBMB 488 459 497 466 399 453 520 HEMB 389 378 440 406 314 421 465 JIUB 553 466 476 515 488 462 523 KETB 520 584 506 560 558 600 546 KIUB 629 562 604 587 613 575 627 KOLB 529 523 524 598 646 565 571 KRUB 441 449 419 47 0 0 0 LICB 487 455 259 374 396 445 334 MAHB 158 305 309 415 356 274 373 MALB 373 462 477 378 401 453 450 MATB o 441 555 417 155 259 514 563 METB 695 726 676 727 710 683 726 MIAB 477 479 396 443 442 492 322 MONB 502 545 582 542 536 462 579 MORB 530 459 416 573 421 417 503 MSPB 646 493 525 575 542 623 473 NOWB 282 391 348 356 313 338 278 PAQB 477 419 448 468 463 389 440 REUB 327 395 322 378 420 332 401 REZB 765 685 706 689 710 758 654 RIKB 400 350 466 351 416 441 447 RIPB 690 751 804 832 760 717 693 SALB 512 492 654 462 437 484 494 SANB 478 460 471 557 638 494 451 SCRB 490 344 520 512 473 482 466 SODB o 460 458 446 455 436 385 457 SPJB 1441 1454 1536 1445 1452 1504 1485 STJB o 596 679 630 612 574 597 597 SYPB 1315 1356 1281 1276 1414 1313 1301 THUB 1279 1301 1250 1259 1252 1243 1205 TLSB 632 546 641 546 671 670 522 YASB 465 547 584 521 646 597 497 YEMB 1070 594 988 984 938 999 929 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- PDMB 27 41 62 72 71 80 35 this is due to the lack of data or to some stations related problems as described below PDMB 16 12 2006 1 1 2010 equipment problem DORISReport #945 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3775 1497 1759 3167 AMUB 1181 542 668 1085 ARFB 1081 342 558 945 ASDB 873 410 475 831 BEMB 4968 1840 2385 4005 BETB 1018 582 692 856 CADB 1175 666 722 969 CHAB 1590 833 1181 1349 CICB 1151 630 728 963 CRPB 1039 221 380 802 DIOB 926 666 785 808 DJIB 1063 491 725 963 EASB 1145 659 888 1098 EVEB 500 399 442 762 FAIB 2802 934 1022 2541 FUTB 1097 348 506 924 GAVB 942 0 0 788 GREB 1372 574 660 1212 HBMB 1176 490 747 1024 HEMB 950 446 566 1001 JIUB 1414 451 806 1150 KETB 1387 668 814 1155 KIUB 1471 919 1079 1225 KOLB 1303 889 1006 963 KRUB 517 201 334 389 LICB 958 496 581 845 MAHB 891 367 433 774 MALB 962 610 759 873 MATB 1050 365 606 1009 METB 1925 763 802 1788 MIAB 1209 584 641 991 MONB 1342 659 759 1179 MORB 1109 621 764 953 MSPB 1320 774 720 1217 NOWB 813 339 473 824 PAQB 1211 463 689 984 REUB 980 392 505 878 REZB 2159 490 641 1994 RIKB 1176 409 603 944 RIPB 2136 697 839 1743 SALB 1163 567 909 1049 SANB 1333 532 749 1088 SCRB 1197 520 692 966 SODB 1162 502 611 973 SPJB 3793 1531 1803 3549 STJB 1527 500 1078 1466 SYPB 3560 1292 1524 3189 THUB 3280 1188 1563 3102 TLSB 1626 607 907 1305 YASB 1253 720 967 1070 YEMB 2425 1159 1394 2151 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- PDMB 0 421 1 0 7) External Comparisons ======================= (for information) 7.1) Stations coordinates ------------------------- Looking at the transformation results Comparing with solution ign07d02 at epoch of observations Weekly DORIS residuals in mm N E V ------------------- WRMS 11.8 13.3 13.5 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign07d02 TX = -0.5 +- 0.9 mm TY = 21.6 +- 0.8 mm TZ = -11.8 +- 1.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2005 using reference ign07d02 S = -1.4 +- 0.1 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 2.20 1.00 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr