****************************************************************************** dorisreport 16-Nov-2006 02:11:59 Message No 0730 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1395 = 06274 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1395 from 01-10-2006 to 07-10-2006 DORIS name (using day of start): 06274 Days of year: from 2006/274 to 2006/280 ============================================================== 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/ign06274wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06274wd04.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 1395 from 01-10-2006 to 07-10-2006 Total number of stations = 46 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 15.44 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 01-10-2006 19779 16 19763 0.1 02-10-2006 22052 15 22037 0.1 03-10-2006 21561 12 21549 0.1 04-10-2006 21532 28 21504 0.1 05-10-2006 18186 5847 12339 32.2 06-10-2006 19239 60 19179 0.3 07-10-2006 21917 30 21887 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 4321 6188 6021 6037 5413 6091 5902 SPOT2 4138 4178 4224 4470 4156 4269 4309 SPOT4 4489 4668 4730 4382 259 2269 4657 SPOT5 6815 7003 6574 6615 2511 6550 7019 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.388 0.431 0.396 0.399 0.409 0.413 0.412 SPOT2 0.412 0.484 0.427 0.417 0.423 0.412 0.413 SPOT4 0.411 0.408 0.423 0.424 0.963 0.431 0.421 SPOT5 0.357 0.356 0.351 0.358 0.360 0.359 0.383 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 1371 1430 1461 1453 1361 1272 1384 AMTB 357 444 513 480 485 454 502 ARFB 334 347 377 250 388 344 354 ASDB 358 321 317 368 318 241 331 CADB 431 555 393 455 271 447 528 CHAB 539 526 540 525 479 487 542 CICB 400 376 454 415 437 427 443 CROB 371 372 384 409 335 357 447 DIOB 426 473 451 422 451 407 458 DJIB 408 463 378 411 438 342 466 EVEB 226 260 245 266 277 240 255 FAIB o 915 1028 1012 1058 1034 945 1024 FUTB 482 387 433 479 402 388 457 GAVB 240 242 238 194 207 192 227 GREB 295 450 536 531 518 440 532 HEMB 316 363 403 442 254 365 382 JIUB 477 512 535 522 487 476 547 KIUB 539 563 579 610 621 580 601 KOLB 604 642 526 592 579 481 589 KRUB 327 474 455 344 351 422 375 LICB 404 425 314 311 246 266 387 MAHB 287 388 165 357 394 247 274 MALB 380 373 469 387 388 402 359 MANB o 77 0 0 0 0 0 0 MATB 439 449 388 469 580 475 449 METB 693 697 740 722 726 651 732 MIAB 328 512 417 427 421 395 428 MONB 439 542 548 534 542 465 578 MORB 407 455 473 535 412 456 536 NOWB 373 499 347 381 370 301 420 PAQB 495 429 432 506 426 407 486 PDMB 430 482 532 344 266 413 440 REUB 344 303 357 425 418 346 459 REZB 681 748 721 727 611 575 655 RIPB 575 735 704 660 606 669 737 ROTB 1216 1396 1445 1462 1224 1341 1429 SANB 368 540 478 513 433 453 560 SCRB 277 444 453 506 301 367 415 SODB o 389 473 396 475 440 414 504 SPJB 1364 1407 1516 1478 1395 1388 1507 SYPB 1188 1490 1448 1462 1502 1356 1382 THUB 1152 1349 1300 1247 1265 1238 1404 TLHA 515 573 561 540 449 397 533 TRIB o 444 571 461 479 518 458 461 YASB 423 570 597 581 521 423 487 YELB 784 870 840 833 842 831 945 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 3768 1608 1483 3163 AMTB 1130 580 602 1108 ARFB 976 429 381 794 ASDB 870 412 368 781 CADB 999 631 585 1048 CHAB 1053 727 864 1111 CICB 952 647 610 964 CROB 1014 497 441 862 DIOB 922 821 665 854 DJIB 993 727 586 863 EVEB 469 370 305 703 FAIB 2650 1051 1106 2489 FUTB 1139 609 555 956 GAVB 837 0 0 805 GREB 1232 513 560 1172 HEMB 974 477 399 845 JIUB 1287 743 801 1012 KIUB 1343 969 981 1175 KOLB 1315 903 935 1084 KRUB 1013 553 558 864 LICB 971 464 368 751 MAHB 722 439 338 762 MALB 878 639 609 864 MANB 0 26 37 19 MATB 1253 536 568 1073 METB 1871 808 727 1768 MIAB 1019 571 557 993 MONB 1222 762 792 1069 MORB 1149 693 689 981 NOWB 1155 378 400 964 PAQB 1142 504 792 956 PDMB 1217 577 463 878 REUB 945 469 517 912 REZB 2026 583 631 1659 RIPB 1972 621 504 1751 ROTB 3634 1527 1412 3238 SANB 1157 561 665 1160 SCRB 1089 458 542 832 SODB 1097 580 618 993 SPJB 3784 1693 1461 3444 SYPB 3557 1723 1668 3179 THUB 3126 1729 1555 2831 TLHA 1612 451 509 1193 TRIB 1133 851 603 1014 YASB 1289 796 737 1034 YELB 2460 818 771 2119 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 17.0 21.6 17.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -24.0 +- 2.9 mm TY = 19.9 +- 3.0 mm TZ = 69.4 +- 2.6 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.9 +- 0.4 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) 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