****************************************************************************** dorisreport 18-Jan-2006 19:15:27 Message No 0477 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1352 = 05338 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1352 from 04-12-2005 to 10-12-2005 DORIS name (using day of start): 05338 Days of year: from 2005/338 to 2005/344 ============================================================== 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/ign05338wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05338wd04.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 1352 from 04-12-2005 to 10-12-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.73 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 04-12-2005 23502 8 23494 0.0 05-12-2005 23444 4 23440 0.0 06-12-2005 19919 9 19910 0.0 07-12-2005 23596 16 23580 0.1 08-12-2005 23978 16 23962 0.1 09-12-2005 23956 10 23946 0.0 10-12-2005 23919 9 23910 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 6516 6620 6767 6586 6673 6639 6763 SPOT2 4561 4770 4828 4892 4702 4838 4671 SPOT4 5218 4879 5022 5009 5208 5043 5113 SPOT5 7199 7171 3293 7093 7379 7426 7363 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.393 0.386 0.393 0.408 0.400 0.393 0.424 SPOT2 0.418 0.413 0.416 0.416 0.426 0.418 0.434 SPOT4 0.410 0.433 0.427 0.421 0.419 0.415 0.407 SPOT5 0.349 0.348 0.354 0.357 0.373 0.364 0.366 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 1500 1590 1423 1589 1591 1534 1578 AMTB 0 0 213 444 484 459 465 ASDB 414 250 322 315 249 350 243 BEMB 1638 1623 1557 1800 1646 1659 1745 CADB 502 510 403 396 423 475 557 CHAB 630 696 584 665 705 673 571 CICB 459 418 470 485 422 483 469 CROB 374 360 297 327 311 377 369 DIOA o 513 503 478 526 473 514 552 EASB 502 459 402 453 514 491 418 EVEB 247 252 258 303 272 234 267 FAIB o 987 1082 992 1050 1144 1044 1027 FUTB 418 406 334 406 410 488 341 HBKB 437 526 519 468 517 552 465 HEMB 307 360 362 388 345 349 324 JIUB 485 554 505 486 559 581 521 KESB 550 550 526 567 540 522 518 KIUB 613 637 624 592 658 677 625 KOLB 519 483 532 548 500 591 522 KRUB 385 314 293 351 401 237 360 LICB 0 112 162 150 134 90 142 MALB 468 481 500 492 514 481 435 MANB o 456 447 429 451 434 451 477 MATB 510 432 431 491 437 413 478 METB 757 720 659 733 755 698 772 MIAB 566 515 526 537 500 480 596 MORB 481 430 448 465 404 532 409 MSPB 495 569 519 548 491 525 543 NOWB 397 349 211 335 401 324 454 PAQB 476 515 556 477 523 569 541 PDMB 449 532 423 319 418 437 511 REUB 432 362 388 394 432 513 461 REZB 690 803 554 658 589 781 619 RIPB 703 624 653 737 638 683 654 ROTB 1281 1349 1191 1182 1172 1368 1223 SALB 498 374 319 466 399 427 441 SANB 568 538 538 479 494 493 605 SCRB 460 466 455 418 505 276 483 SODB o 363 445 445 476 478 553 499 SPJB 1617 1584 1405 1487 1708 1528 1554 STJB 655 694 503 690 731 619 657 SYPB 1342 1324 1339 1365 1323 1319 1327 THUB 1306 1279 1163 1339 1434 1176 1238 TLHA 511 571 508 499 552 572 478 TRIB o 584 413 519 484 454 478 560 YASB 502 532 506 556 535 416 596 YELB 954 867 896 909 898 952 882 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 3839 1985 2140 3209 AMTB 803 341 362 693 ASDB 878 398 318 708 BEMB 4457 2012 2217 3544 CADB 1177 656 771 861 CHAB 1646 785 1140 1224 CICB 1122 650 693 921 CROB 898 407 458 759 DIOA 1188 777 822 1024 EASB 1084 866 856 780 EVEB 514 299 387 692 FAIB 2844 1215 1150 2433 FUTB 1058 552 486 907 HBKB 1312 689 701 983 HEMB 999 371 407 806 JIUB 1337 774 842 968 KESB 1357 737 693 1207 KIUB 1450 1018 1081 1203 KOLB 1317 740 853 1066 KRUB 1053 484 436 618 LICB 850 0 0 0 MALB 1138 806 791 843 MANB 1225 580 628 932 MATB 1163 554 519 1114 METB 2019 710 815 1755 MIAB 1308 821 794 1031 MORB 1095 682 761 861 MSPB 1306 779 797 984 NOWB 1043 411 368 849 PAQB 1252 756 938 962 PDMB 1227 628 581 864 REUB 995 628 670 897 REZB 2032 656 694 1524 RIPB 1768 719 924 1521 ROTB 3394 1427 1337 3020 SALB 1160 588 533 859 SANB 1318 684 831 1099 SCRB 1059 711 705 775 SODB 1152 518 920 872 SPJB 3800 2134 2193 3294 STJB 1598 951 978 1233 SYPB 3590 1484 1588 3011 THUB 3374 1614 1681 2666 TLHA 1607 507 515 1226 TRIB 1198 723 763 1046 YASB 1235 758 847 1031 YELB 2648 863 970 2118 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 17.1 18.7 14.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -11.4 +- 1.8 mm TY = -8.6 +- 1.9 mm TZ = 19.9 +- 1.7 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.2 +- 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 1.43 0.65 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr