****************************************************************************** dorisreport 26-Nov-2005 07:15:41 Message No 0431 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1345 = 05289 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1345 from 16-10-2005 to 22-10-2005 DORIS name (using day of start): 05289 Days of year: from 2005/289 to 2005/295 ============================================================== 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/ign05289wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign05289wd04.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 1345 from 16-10-2005 to 22-10-2005 Total number of stations = 48 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.55 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 16-10-2005 21890 33 21857 0.2 17-10-2005 22567 66 22501 0.3 18-10-2005 22379 47 22332 0.2 19-10-2005 21891 17 21874 0.1 20-10-2005 22274 14 22260 0.1 21-10-2005 22219 15 22204 0.1 22-10-2005 21543 18 21525 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 5984 6165 6018 5720 6123 6051 5495 SPOT2 4686 4968 5162 4653 4671 4797 4599 SPOT4 4876 4855 4712 4788 5038 4932 4934 SPOT5 6311 6513 6440 6713 6428 6424 6497 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.403 0.394 0.393 0.396 0.386 0.391 0.389 SPOT2 0.443 0.454 0.453 0.413 0.407 0.410 0.405 SPOT4 0.439 0.421 0.411 0.425 0.395 0.399 0.410 SPOT5 0.364 0.353 0.357 0.362 0.367 0.365 0.355 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 1511 1533 1480 1482 1463 1482 1461 AMTB 68 66 48 62 58 84 67 ASDB 0 0 43 217 170 138 144 BEMB 1262 1151 1240 1143 1203 1244 1135 CADB 388 511 469 554 458 379 338 CHAB 0 0 147 77 84 119 110 CICB 523 452 443 425 451 449 407 CROB 382 420 416 438 380 394 435 DJIB 146 169 156 143 150 142 164 EASB 455 422 511 454 460 550 505 EVEB 293 288 252 236 292 310 196 FAIB o 1060 1083 1065 993 1053 1020 1037 FUTB 354 414 455 339 371 383 378 HBKB 507 512 476 490 435 447 519 HEMB 387 334 410 321 302 444 318 JIUB 543 483 527 504 419 507 504 KESB 112 107 75 99 110 102 105 KIUB 581 554 633 597 576 604 567 KOLB 540 574 520 435 548 478 477 KRUB 347 262 322 330 373 299 266 LIBB 334 304 295 308 290 192 0 MALB 482 478 475 443 518 493 508 MANB o 391 455 429 387 417 426 393 MATB 468 528 450 432 403 492 490 METB 701 751 686 730 743 729 757 MIAB 546 538 502 550 568 537 522 MORB 547 387 399 494 421 475 492 MSPB 636 465 477 624 495 531 445 NOWB 301 496 414 416 436 365 385 PAQB 513 500 525 497 503 457 509 PDMB 451 421 587 502 506 518 472 REUB 466 455 450 439 462 426 463 REZB 597 605 701 679 581 521 612 RIPB 769 681 701 653 683 756 680 ROTB 1160 1262 1219 1421 1247 1133 1161 SAKB 508 502 449 414 542 824 740 SALB 36 66 94 34 54 55 71 SANB 489 547 457 569 583 462 552 SCRB 482 464 490 521 466 522 511 SODB o 535 555 505 526 519 448 569 SPJB 1562 1631 1573 1446 1607 1591 1639 STJB 541 711 693 662 648 592 637 SYPB 1373 1388 1396 1267 1446 1358 1247 THUB 1324 1376 1179 1288 1351 1361 1375 TLHA 523 557 554 499 489 482 569 TRIB o 440 555 433 430 521 456 437 YASB 407 565 499 544 603 603 470 YELB 926 932 900 835 896 907 862 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 85 160 158 35 0 55 0 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 3672 1899 2157 2985 AMTB 0 10 158 300 ASDB 0 190 201 374 BEMB 4388 2031 2391 0 CADB 1045 649 757 841 CHAB 0 573 0 0 CICB 999 674 693 975 CROB 1153 390 566 916 DJIB 0 552 280 284 EASB 1110 791 924 894 EVEB 495 391 397 657 FAIB 2707 1202 1163 2521 FUTB 1049 533 489 851 HBKB 1329 514 680 1329 HEMB 905 403 497 882 JIUB 1298 633 673 1142 KESB 0 755 0 0 KIUB 1451 912 987 1162 KOLB 1207 741 838 1020 KRUB 923 401 361 702 LIBB 805 253 367 452 MALB 1094 764 846 936 MANB 1071 593 518 933 MATB 1310 416 679 1064 METB 1944 745 849 1768 MIAB 1298 910 838 955 MORB 1072 671 810 895 MSPB 1297 710 702 1148 NOWB 1125 476 474 905 PAQB 1191 693 869 1002 PDMB 1221 623 767 1065 REUB 1087 704 703 899 REZB 1893 502 352 1741 RIPB 1752 756 964 1708 ROTB 3364 1449 960 3217 SAKB 571 1200 1212 1225 SALB 0 448 0 0 SANB 1341 816 636 1106 SCRB 1231 768 725 929 SODB 1260 785 848 988 SPJB 3735 2086 2320 3460 STJB 1465 922 1039 1288 SYPB 3641 1346 1697 3088 THUB 3123 1714 1799 2991 TLHA 1585 500 510 1275 TRIB 1057 654 856 924 YASB 1253 859 827 969 YELB 2554 879 948 2103 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- ENVISAT SPOT2 SPOT4 SPOT5 ------------------------------------- KRAB 0 497 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 19.4 17.9 13.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -18.8 +- 1.9 mm TY = 5.1 +- 1.7 mm TZ = -9.5 +- 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 1.40 0.44 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr