****************************************************************************** dorisreport 23-Jan-2006 18:39:55 Message No 0482 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1353 = 05345 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1353 from 11-12-2005 to 17-12-2005 DORIS name (using day of start): 05345 Days of year: from 2005/345 to 2005/351 ============================================================== 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/ign05345wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05345wd04.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 1353 from 11-12-2005 to 17-12-2005 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.85 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 11-12-2005 23310 43 23267 0.2 12-12-2005 23006 16 22990 0.1 13-12-2005 24025 14 24011 0.1 14-12-2005 24074 17 24057 0.1 15-12-2005 23775 15 23760 0.1 16-12-2005 20483 8 20475 0.0 17-12-2005 23682 4 23678 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 6239 6505 6736 6606 6535 6772 6637 SPOT2 4744 4782 4743 4971 4782 4918 4908 SPOT4 5121 4931 5178 5066 5106 5262 5104 SPOT5 7163 6772 7354 7414 7337 3523 7029 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.412 0.402 0.394 0.387 0.400 0.386 0.390 SPOT2 0.452 0.438 0.427 0.407 0.420 0.416 0.420 SPOT4 0.410 0.417 0.435 0.427 0.418 0.399 0.408 SPOT5 0.363 0.353 0.350 0.355 0.349 0.354 0.351 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 1428 1571 1636 1501 1492 1329 1457 AMTB 468 505 501 468 504 482 438 ASDB 361 340 338 322 248 277 338 BEMB 1727 1706 1792 1682 1665 1668 1600 CADB 343 502 520 296 529 446 333 CHAB 543 478 674 712 611 590 678 CICB 448 500 484 441 470 496 453 CROB 265 294 337 329 366 286 323 DIOA o 498 516 561 240 0 0 0 EASB 501 506 421 460 426 428 494 EVEB 282 258 257 246 226 272 325 FAIB o 994 1050 1079 1032 1120 940 1041 FUTB 321 478 435 466 428 374 426 HBKB 452 421 503 460 568 453 458 HEMB 410 421 279 374 385 275 350 JIUB 531 558 550 561 546 487 498 KESB 587 521 506 537 541 532 577 KIUB 617 618 662 645 647 643 588 KOLB 398 533 506 536 526 552 538 KRUB 344 451 341 376 300 303 383 LICB 131 141 170 144 130 175 270 MALB 520 495 512 534 474 507 449 MANB o 455 380 480 448 386 428 444 MATB 386 413 537 462 407 448 453 METB 692 708 760 761 701 732 756 MIAB 553 479 561 522 511 530 522 MONB 0 0 73 470 549 499 546 MORB 441 564 362 453 515 363 425 MSPB 596 500 518 488 553 437 555 NOWB 298 0 0 286 387 308 330 PAQB 452 449 532 545 517 520 506 PDMB 410 320 406 474 448 404 482 REUB 409 462 486 443 429 475 417 REZB 618 495 738 733 698 386 629 RIPB 720 758 701 713 650 702 670 ROTB 1263 1110 1130 1167 1390 993 1228 SALB 506 509 322 420 418 342 515 SANB 415 515 548 528 573 554 538 SCRB 404 516 438 490 520 465 521 SODB o 435 379 511 430 442 404 400 SPJB 1599 1553 1578 1617 1612 1407 1591 STJB 744 590 704 671 568 568 628 SYPB 1286 1335 1385 1365 1317 1369 1243 THUB 1297 1404 1310 1332 1308 1345 1201 TLHA 454 394 515 570 594 490 511 TRIB o 489 448 580 546 453 487 514 YASB 597 535 550 507 515 511 599 YELB 861 892 913 924 899 868 888 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 3718 1899 2251 2849 AMTB 1327 655 564 1047 ASDB 839 395 442 745 BEMB 4464 2180 2234 3554 CADB 1050 715 659 714 CHAB 1538 872 1024 1108 CICB 1160 730 739 867 CROB 820 314 436 736 DIOA 616 406 417 458 EASB 1149 742 805 956 EVEB 498 374 389 680 FAIB 2768 1174 1172 2432 FUTB 1090 539 610 907 HBKB 1325 633 616 971 HEMB 1031 372 374 895 JIUB 1383 786 757 1042 KESB 1370 702 784 1151 KIUB 1514 1017 1028 1186 KOLB 1213 786 921 939 KRUB 857 613 539 663 LICB 1121 0 0 115 MALB 1173 791 846 921 MANB 1136 628 624 856 MATB 1153 567 595 955 METB 1996 790 802 1731 MIAB 1239 786 876 968 MONB 728 531 489 528 MORB 1105 689 812 745 MSPB 1328 671 875 943 NOWB 667 237 233 581 PAQB 1193 760 921 896 PDMB 1194 538 640 800 REUB 1006 804 659 838 REZB 2054 438 496 1512 RIPB 1832 902 984 1459 ROTB 3322 1236 1203 2904 SALB 1215 546 615 894 SANB 1411 725 788 1016 SCRB 1185 750 736 904 SODB 1159 588 628 855 SPJB 3756 2178 2357 3221 STJB 1590 970 957 1182 SYPB 3491 1414 1544 3180 THUB 3222 1803 1775 2787 TLHA 1535 494 463 1166 TRIB 1197 687 840 1017 YASB 1388 841 828 1025 YELB 2564 887 956 2074 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 14.2 14.9 17.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -12.6 +- 1.9 mm TY = 16.2 +- 1.9 mm TZ = -4.9 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.7 +- 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 0.99 0.50 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr