****************************************************************************** dorisreport 10-Sep-2007 10:48:54 Message No 0992 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1439 = 07217 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1439 from 05-08-2007 to 11-08-2007 DORIS name (using day of start): 07217 Days of year: from 2007/217 to 2007/223 ============================================================== 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/ign07217wd05.snx.Z weekly sinex in ITRF2005 pub/doris/products/sinex_series/ignwd/ign07217wd06.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 1439 from 05-08-2007 to 11-08-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.41 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 05-08-2007 24477 6 24471 0.0 06-08-2007 24414 1 24413 0.0 07-08-2007 23700 4 23696 0.0 08-08-2007 24006 1 24005 0.0 09-08-2007 23494 14 23480 0.1 10-08-2007 24400 3 24397 0.0 11-08-2007 24434 2 24432 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 6746 7007 6724 6873 6005 6700 6846 SPOT2 4419 4359 4065 4097 4407 4345 4446 SPOT4 5434 5458 5204 5261 5321 5486 5453 SPOT5 7872 7589 7703 7774 7747 7866 7687 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.400 0.432 0.414 0.428 0.417 0.404 0.415 SPOT2 0.427 0.435 0.439 0.424 0.444 0.443 0.452 SPOT4 0.431 0.434 0.415 0.439 0.433 0.422 0.417 SPOT5 0.371 0.382 0.382 0.387 0.378 0.379 0.370 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 1436 1472 1375 1414 1431 1339 1461 AMUB 512 488 475 495 534 514 465 ARFB 441 414 347 375 408 361 397 ASDB o 363 354 429 280 337 418 290 BEMB 1875 1926 1788 1779 1818 1852 1880 BETB 430 480 441 420 471 456 413 CADB 519 447 436 448 489 510 477 CHAB 702 710 753 696 717 741 718 CICB 517 495 389 484 491 484 447 CRPB 348 223 293 342 263 270 237 DIOB 410 420 389 366 398 396 384 DJIB 498 356 424 410 438 443 410 EASB 489 458 504 486 486 453 475 EVEB o 231 283 322 246 226 284 265 FAIB o 998 1018 958 1055 971 959 982 FUTB 395 315 389 375 361 359 403 GAVB 226 253 242 177 242 269 242 GREB 508 548 446 464 416 510 531 HBMB 450 432 451 447 506 459 453 HEMB 443 367 460 471 377 355 441 JIUB 557 440 472 563 568 443 468 KETB 570 546 526 604 503 600 623 KIUB 621 592 566 604 613 625 578 KOLB 544 638 504 527 577 550 549 KRUB 390 354 399 397 431 482 438 LICB 435 447 405 391 468 433 360 MAHB 349 350 360 412 324 384 357 MALB 409 421 379 493 464 425 473 MATB o 358 504 537 473 507 505 529 METB 700 680 633 749 721 674 725 MIAB 408 464 503 357 454 499 489 MONB 602 514 546 595 549 558 508 MORB 518 458 402 469 493 493 460 MSPB 569 597 573 572 527 568 570 NOWB 376 354 318 305 327 385 289 PAQB 472 543 458 474 443 480 456 REUB 368 366 384 316 408 365 366 REZB 772 657 730 760 571 707 683 RIKB 348 381 401 484 394 314 474 RIPB 815 760 721 720 799 806 760 SALB 535 439 625 493 519 561 514 SANB 554 581 509 440 491 569 518 SCRB 474 505 442 492 470 456 493 SODB o 467 507 406 428 534 468 418 SPJB 1539 1494 1440 1445 1536 1444 1517 STJB o 586 592 583 691 565 603 719 SYPB 1269 1391 1318 1329 1353 1337 1325 THUB 1300 1270 1232 1424 1327 1297 1312 TLSB 641 619 580 511 588 575 679 YASB 541 585 551 487 412 529 564 YEMB 1003 1014 999 972 1067 1014 1018 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 55 46 70 49 43 79 95 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 3823 1476 1718 3217 AMUB 1243 633 656 1108 ARFB 1043 318 552 954 ASDB 951 441 504 849 BEMB 4989 1917 2369 4190 BETB 1061 657 716 866 CADB 1107 633 790 970 CHAB 1664 1042 1147 1355 CICB 1204 537 783 965 CRPB 879 214 316 741 DIOB 882 591 683 821 DJIB 1097 430 753 928 EASB 1174 788 875 1025 EVEB 537 357 400 744 FAIB 2877 916 1074 2537 FUTB 1078 435 514 908 GAVB 952 7 0 867 GREB 1399 568 601 1173 HBMB 1191 421 779 963 HEMB 1097 531 577 892 JIUB 1358 651 841 1040 KETB 1438 674 822 1182 KIUB 1423 927 1131 1214 KOLB 1267 723 1060 1041 KRUB 1167 321 716 981 LICB 1048 538 575 928 MAHB 965 404 515 911 MALB 1029 567 737 933 MATB 1257 405 692 1222 METB 1876 677 809 1784 MIAB 1149 508 633 1098 MONB 1358 761 800 1102 MORB 1086 637 756 940 MSPB 1303 794 872 1210 NOWB 936 353 368 829 PAQB 1190 565 761 983 REUB 953 474 529 876 REZB 2170 497 778 1931 RIKB 1057 426 550 991 RIPB 2199 699 876 1806 SALB 1255 720 843 1011 SANB 1321 524 790 1179 SCRB 1116 634 738 951 SODB 1218 546 658 982 SPJB 3809 1578 1751 3619 STJB 1614 596 1062 1368 SYPB 3618 1328 1450 3207 THUB 3315 1370 1682 3122 TLSB 1683 505 928 1296 YASB 1232 555 878 1166 YEMB 2510 1216 1527 2205 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- PDMB 2 492 0 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 13.6 18.9 10.3 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign07d02 TX = -3.9 +- 1.1 mm TY = 16.3 +- 0.8 mm TZ = 42.1 +- 1.0 mm 7.3) Scale factor ----------------- Scale factor / ITRF2005 using reference ign07d02 S = -1.0 +- 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 1.26 1.00 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr