****************************************************************************** dorisreport 22-Nov-2005 23:49:44 Message No 0427 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1344 = 05282 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1344 from 09-10-2005 to 15-10-2005 DORIS name (using day of start): 05282 Days of year: from 2005/282 to 2005/288 ============================================================== 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/ign05282wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05282wd04.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 1344 from 09-10-2005 to 15-10-2005 Total number of stations = 47 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.79 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 09-10-2005 21672 15 21657 0.1 10-10-2005 21642 12 21630 0.1 11-10-2005 22497 7 22490 0.0 12-10-2005 22329 15 22314 0.1 13-10-2005 22731 28 22703 0.1 14-10-2005 22158 14 22144 0.1 15-10-2005 21958 18 21940 0.1 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 5729 5920 5840 6169 6349 6134 6006 SPOT2 4575 4486 5052 4962 4838 4842 4965 SPOT4 4900 4744 5124 4720 5053 4794 4636 SPOT5 6453 6480 6474 6463 6463 6374 6333 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.384 0.384 0.393 0.404 0.406 0.393 0.393 SPOT2 0.399 0.415 0.418 0.406 0.435 0.449 0.453 SPOT4 0.414 0.409 0.422 0.404 0.421 0.417 0.408 SPOT5 0.361 0.358 0.359 0.359 0.370 0.360 0.357 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 1525 1507 1505 1545 1505 1516 1422 AMTB 60 81 121 102 99 59 66 ASDB 135 205 164 209 119 0 0 BEMB 1056 1232 1248 1126 1151 1167 1099 CADB 504 451 422 442 361 331 346 CICB 477 515 472 441 473 449 479 CROB 410 430 428 397 423 435 365 DJIB 146 166 181 172 99 108 121 EASB 456 427 526 549 433 407 461 EVEB 242 290 297 248 226 267 270 FAIB o 1075 1045 1060 1096 1105 1032 1095 FUTB 396 378 425 424 494 323 444 HBKB 495 438 468 551 545 489 500 HEMB 349 319 397 351 272 358 413 JIUB 525 520 461 553 508 371 539 KESB 0 0 33 81 88 79 79 KIUB 590 569 548 599 631 554 607 KOLB 486 455 559 532 612 545 517 KRUB 451 349 253 317 337 374 294 LIBB 301 307 308 315 345 419 266 MALB 463 497 504 509 452 433 480 MANB o 464 447 466 429 479 436 390 MATB 415 422 449 475 446 414 517 METB 748 703 752 650 755 762 762 MIAB 512 550 542 494 557 594 501 MORB 484 500 472 410 545 405 415 MSPB 547 593 559 441 583 556 553 NOWB 358 410 388 345 380 413 385 PAQB 482 449 485 556 452 499 546 PDMB 463 449 513 470 478 525 541 REUB 419 439 418 420 475 414 430 REZB 660 627 700 593 709 645 667 RIPB 686 712 771 732 764 718 682 ROTB 1309 1234 1216 1231 1239 1349 1247 SAKB 802 761 749 794 716 515 506 SALB 0 0 52 26 35 75 72 SANB 576 553 553 528 620 577 418 SCRB 506 514 366 512 491 428 486 SODB o 517 552 442 421 583 533 491 SPJB 1587 1553 1566 1648 1636 1589 1595 STJB 605 649 618 691 652 680 669 SYPB 1387 1385 1415 1384 1381 1385 1410 THUB 613 654 1161 1385 1323 1266 1336 TLHA 557 518 517 523 587 550 532 TRIB o 420 423 276 339 490 549 500 YASB 477 515 600 509 432 590 604 YELB 934 884 924 955 954 923 853 6.2) stations rejected from solution ------------------------------------ the following stations were not given in the output sinex solutions : day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- KRAB 34 41 63 0 86 35 60 this is due to the lack of data or to some stations related problems as described below KRAB 31 7 2005 1 1 2010 equipment problem, insufficient power 6.3) statistics per station and per satellite (stations in sinex) ----------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- ADEB 3803 1982 2090 2943 AMTB 0 58 210 338 ASDB 0 212 269 422 BEMB 4297 2071 2194 0 CADB 1049 634 643 745 CICB 1204 740 732 853 CROB 1068 407 514 1041 DJIB 0 491 294 249 EASB 1122 763 874 851 EVEB 502 325 394 698 FAIB 2843 1255 1167 2537 FUTB 1092 602 461 963 HBKB 1283 730 688 1181 HEMB 931 412 421 845 JIUB 1341 651 682 1016 KESB 0 384 0 0 KIUB 1426 828 1020 1180 KOLB 1279 891 834 970 KRUB 1003 557 380 679 LIBB 836 352 571 697 MALB 1151 749 808 940 MANB 1180 600 589 962 MATB 1153 404 579 1175 METB 1930 864 826 1747 MIAB 1271 798 896 1046 MORB 1108 758 681 890 MSPB 1377 774 788 1108 NOWB 1198 299 363 1006 PAQB 1217 735 900 901 PDMB 1277 645 753 976 REUB 938 691 728 870 REZB 2134 463 582 1618 RIPB 1818 856 899 1758 ROTB 3457 1287 1302 3176 SAKB 1479 1156 1206 1294 SALB 0 273 0 0 SANB 1339 736 845 1132 SCRB 1070 717 773 916 SODB 1219 829 837 914 SPJB 3824 2319 2248 3318 STJB 1572 1047 937 1241 SYPB 3675 1538 1644 3203 THUB 2281 1820 1526 2411 TLHA 1716 449 483 1334 TRIB 713 693 767 992 YASB 1295 714 881 1043 YELB 2651 950 960 2098 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 0 325 0 0 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 19.3 18.3 15.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -25.1 +- 1.7 mm TY = 11.8 +- 1.7 mm TZ = 23.5 +- 1.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -3.3 +- 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 0.49 0.34 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr