****************************************************************************** dorisreport 08-Jun-2007 13:05:11 Message No 0907 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1427 = 07133 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1427 from 13-05-2007 to 19-05-2007 DORIS name (using day of start): 07133 Days of year: from 2007/133 to 2007/139 ============================================================== 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/ign07133wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07133wd04.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., Y.E. Bar-Sever, G. Tavernier (2005), DORIS as a potential part of a Global Geodetic Observing System, J. Geodyn., 40(4-5), 494-501, DOI: 10.1016/j.jog.2005.06.011 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. Week 1405 = 06344 : Use GIPSY/OASIS software installed at Institut de Physique du Globe de Paris 4) Global Statistics ==================== GPS week number 1427 from 13-05-2007 to 19-05-2007 Total number of stations = 52 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.92 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 13-05-2007 23912 5 23907 0.0 14-05-2007 23203 2 23201 0.0 15-05-2007 23574 5 23569 0.0 16-05-2007 22619 1 22618 0.0 17-05-2007 24246 10 24236 0.0 18-05-2007 23790 11 23779 0.0 19-05-2007 23499 10 23489 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 6714 6197 6744 5807 6791 6689 6666 SPOT2 4443 4283 4338 4263 4582 4402 4107 SPOT4 5003 5019 5019 5062 5127 4986 5091 SPOT5 7747 7702 7468 7486 7736 7702 7625 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.411 0.398 0.405 0.424 0.422 0.435 0.422 SPOT2 0.437 0.414 0.421 0.431 0.433 0.435 0.440 SPOT4 0.430 0.427 0.432 0.426 0.427 0.435 0.424 SPOT5 0.369 0.369 0.374 0.379 0.387 0.389 0.384 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 1380 1420 1456 1420 1411 1395 1436 ARFB 365 362 367 333 465 429 461 ASDB 391 344 335 399 282 370 353 BEMB 1639 1621 1685 1661 1710 1653 1631 BETB 415 449 465 204 406 406 400 CADB 526 517 482 458 446 503 536 CHAB 764 685 720 732 747 607 640 CRPB 284 301 289 232 295 325 446 DIOB 450 384 448 466 491 486 446 DJIB 449 481 447 472 490 463 444 EASB 394 417 410 470 495 439 443 EVEB 254 205 268 322 259 206 265 FAIB o 988 1069 1067 959 1083 951 1025 FUTB 350 412 418 434 446 405 292 GAVB 268 256 222 232 210 231 134 GREB 451 458 552 509 538 480 498 HBMB 472 456 461 463 482 532 485 HEMB 358 339 345 445 342 331 370 JIUB 515 468 503 482 579 578 543 KETB 582 414 536 625 560 574 539 KIUB 603 538 563 541 600 598 625 KOLB 577 566 575 598 544 606 658 KRUB 0 0 217 328 379 416 519 LICB 457 378 463 413 451 499 423 MAHB 362 365 177 342 341 411 361 MALB 465 387 463 402 447 451 426 MANB o 455 394 417 466 386 452 488 MATB 541 479 414 608 524 524 435 METB 719 708 686 670 733 754 681 MIAB 500 470 445 433 465 419 436 MONB 569 586 493 562 610 571 519 MORB 474 420 491 388 487 547 475 MSPB 457 574 633 491 590 526 534 NOWB 402 329 284 267 295 275 469 PDMB 19 50 28 0 0 13 39 REUB 347 371 407 404 376 430 379 REZB 796 722 705 675 735 697 784 RIKB 419 375 453 436 449 379 437 RIPB 615 582 636 648 619 708 588 ROTB 1143 1054 1179 1055 1066 1111 1105 SALB 535 379 381 589 499 445 531 SANB 545 479 546 523 479 507 622 SCRB 473 422 435 482 435 498 373 SODB o 444 396 456 402 414 511 432 SPJB 1474 1476 1497 1485 1554 1467 1476 STJB 0 0 45 655 767 257 0 SYPB 1248 1194 1353 1355 1289 1258 1237 THUB 1270 1217 1316 1307 1426 1305 1218 TLHA 550 590 570 536 550 581 557 TRIB o 572 426 481 560 496 492 557 YASB 533 507 517 653 541 459 601 YELB 918 828 470 0 0 0 0 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 3813 1502 1720 3211 ARFB 990 370 563 975 ASDB 914 438 533 834 BEMB 4653 1570 1911 3966 BETB 994 543 654 792 CADB 1112 671 867 1004 CHAB 1602 876 1219 1364 CRPB 977 314 278 789 DIOB 902 809 759 862 DJIB 1110 701 732 937 EASB 1063 808 896 976 EVEB 487 328 372 726 FAIB 2780 1011 1249 2539 FUTB 1099 445 579 919 GAVB 898 2 1 801 GREB 1320 466 735 1154 HBMB 1150 635 754 980 HEMB 1021 402 476 851 JIUB 1245 721 893 1101 KETB 1400 672 795 1199 KIUB 1384 893 1129 1210 KOLB 1318 823 1038 1112 KRUB 1091 566 568 888 LICB 1082 652 604 934 MAHB 922 410 429 866 MALB 991 708 765 900 MANB 1165 497 695 1017 MATB 1297 555 691 1171 METB 1909 701 860 1789 MIAB 1175 552 582 1091 MONB 1286 805 869 1101 MORB 1060 692 788 979 MSPB 1330 669 841 1163 NOWB 918 382 279 901 PDMB 6 174 0 1 REUB 957 478 580 903 REZB 2181 587 726 1883 RIKB 1126 520 587 967 RIPB 1863 424 645 1619 ROTB 3174 964 807 3039 SALB 1209 678 798 979 SANB 1223 712 706 1201 SCRB 1065 584 685 951 SODB 1126 590 688 974 SPJB 3780 1590 1806 3583 STJB 1254 625 888 1090 SYPB 3381 1225 1532 3077 THUB 3105 1440 1782 3081 TLHA 1625 584 719 1328 TRIB 1252 741 817 1102 YASB 1206 746 854 1147 YELB 927 293 312 788 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 13.5 20.8 18.3 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -26.1 +- 2.2 mm TY = 14.8 +- 2.3 mm TZ = 81.0 +- 2.1 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.8 +- 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 1.09 0.48 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr