****************************************************************************** dorisreport 05-Jun-2007 02:45:33 Message No 0898 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1425 = 07119 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1425 from 29-04-2007 to 05-05-2007 DORIS name (using day of start): 07119 Days of year: from 2007/119 to 2007/125 ============================================================== 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/ign07119wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07119wd04.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., 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 4) Global Statistics ==================== GPS week number 1425 from 29-04-2007 to 05-05-2007 Total number of stations = 51 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.89 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 29-04-2007 23591 7 23584 0.0 30-04-2007 23223 53 23170 0.2 01-05-2007 23629 8 23621 0.0 02-05-2007 22683 11 22672 0.0 03-05-2007 23030 25 23005 0.1 04-05-2007 23259 2 23257 0.0 05-05-2007 23040 6 23034 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 6648 6129 6609 6337 6467 6677 6483 SPOT2 4330 4402 4638 4154 4175 4219 4198 SPOT4 5091 5069 4923 4860 4918 4941 4896 SPOT5 7515 7570 7451 7321 7445 7420 7457 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.394 0.422 0.402 0.413 0.398 0.396 0.396 SPOT2 0.427 0.415 0.409 0.401 0.434 0.435 0.423 SPOT4 0.414 0.411 0.404 0.414 0.416 0.426 0.435 SPOT5 0.361 0.362 0.369 0.385 0.373 0.373 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 1487 1447 1394 1356 1448 1440 1423 ARFB 421 359 172 0 196 421 367 ASDB 331 355 362 357 406 268 357 BEMB 1695 1703 1719 1698 1723 1676 1707 BETB 417 361 412 314 429 340 433 CADB 497 518 385 516 574 472 441 CHAB 717 767 730 688 719 716 707 CICB 268 0 0 0 0 0 0 CRPB 395 352 344 548 418 419 405 DIOB 421 406 500 471 473 396 371 DJIB 447 406 477 463 488 436 480 EASB 463 409 528 485 437 469 509 EVEB 264 329 285 249 260 246 266 FAIB o 1025 937 1054 997 1045 988 1103 FUTB 429 359 427 433 391 380 389 GAVB 250 218 228 244 245 224 220 GREB 518 506 547 438 515 579 506 HBMB 497 461 491 551 465 438 462 HEMB 330 403 376 338 233 389 383 KETB 97 115 114 113 81 316 253 KIUB 622 536 580 595 555 612 619 KOLB 602 597 516 598 603 530 542 LICB 328 435 358 404 222 175 365 MAHB 0 202 173 320 345 359 336 MALB 403 472 480 430 258 424 466 MANB o 446 436 413 458 452 463 428 MATB 572 547 582 481 525 565 506 METB 699 680 731 730 702 716 690 MIAB 414 485 465 444 506 508 440 MONB 507 509 572 569 554 553 557 MORB 502 440 473 425 442 452 525 MSPB 605 557 539 517 467 607 612 NOWB 182 411 355 330 350 295 266 PDMB 43 13 0 0 33 28 11 REUB 420 340 348 423 472 392 418 REZB 697 781 736 705 728 729 694 RIKB 475 470 433 444 427 523 476 RIPB 609 477 621 687 671 621 617 ROTB 1158 1075 1087 1093 983 1082 1088 SALB 451 527 579 471 452 573 493 SANB 543 455 429 513 596 575 532 SCRB 472 418 407 549 432 455 482 SODB o 485 380 411 480 453 411 451 SPJB 1481 1423 1555 1360 1485 1486 1467 STJB 664 665 765 41 0 0 0 SYPB 1398 1290 1320 1326 1390 1334 1323 THUB 1368 1336 1321 1422 1410 1403 1301 TLHA 627 605 522 559 599 602 540 TRIB o 453 651 542 489 535 442 556 YASB 482 522 579 548 582 631 601 YELB 845 844 849 871 890 872 884 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 3836 1463 1750 3253 ARFB 722 258 408 629 ASDB 885 421 476 846 BEMB 4657 1688 1900 4075 BETB 930 496 669 819 CADB 1143 691 720 991 CHAB 1576 1071 1206 1346 CICB 98 283 310 513 CRPB 1054 393 426 1157 DIOB 953 578 734 839 DJIB 1049 698 759 924 EASB 1043 746 859 1083 EVEB 495 337 422 752 FAIB 2725 952 1212 2604 FUTB 1067 427 535 949 GAVB 893 0 1 827 GREB 1309 582 652 1237 HBMB 1117 714 682 958 HEMB 936 333 413 921 KETB 442 694 0 12 KIUB 1285 983 1090 1155 KOLB 1314 817 1084 977 LICB 830 493 459 708 MAHB 675 334 339 629 MALB 928 592 682 898 MANB 1134 578 681 969 MATB 1315 510 856 1246 METB 1869 704 835 1766 MIAB 1164 555 679 1036 MONB 1267 730 809 1134 MORB 1141 624 748 927 MSPB 1363 709 791 1190 NOWB 824 348 355 794 PDMB 0 136 0 2 REUB 942 488 635 879 REZB 2198 620 680 1903 RIKB 1203 587 612 1037 RIPB 1845 453 597 1541 ROTB 3121 877 820 3016 SALB 1198 631 892 1029 SANB 1233 652 798 1120 SCRB 1170 569 681 943 SODB 1137 622 619 953 SPJB 3772 1452 1810 3499 STJB 702 330 507 653 SYPB 3452 1367 1654 3184 THUB 3251 1690 1758 3089 TLHA 1614 489 819 1328 TRIB 1127 727 914 1126 YASB 1255 736 1001 1131 YELB 2578 749 875 2091 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 13.5 16.6 15.0 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -34.1 +- 2.3 mm TY = 23.7 +- 2.3 mm TZ = 68.2 +- 2.2 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 1.40 0.25 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr