****************************************************************************** dorisreport 18-Jul-2007 02:36:29 Message No 0936 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1431 = 07161 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1431 from 10-06-2007 to 16-06-2007 DORIS name (using day of start): 07161 Days of year: from 2007/161 to 2007/167 ============================================================== 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/ign07161wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07161wd04.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 1431 from 10-06-2007 to 16-06-2007 Total number of stations = 53 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.82 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 10-06-2007 24166 6 24160 0.0 11-06-2007 24241 8 24233 0.0 12-06-2007 24017 5 24012 0.0 13-06-2007 22155 9 22146 0.0 14-06-2007 24309 4 24305 0.0 15-06-2007 23305 11 23294 0.0 16-06-2007 24335 4 24331 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 7085 6833 6330 7088 6824 6177 7009 SPOT2 4172 4523 4543 4299 4080 4297 4556 SPOT4 5114 5190 5211 5148 5392 5229 5167 SPOT5 7789 7687 7928 5611 8009 7591 7599 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.422 0.420 0.440 0.410 0.406 0.427 0.407 SPOT2 0.435 0.425 0.425 0.443 0.438 0.427 0.431 SPOT4 0.420 0.425 0.429 0.422 0.424 0.459 0.433 SPOT5 0.382 0.385 0.382 0.378 0.367 0.370 0.372 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 1390 1444 1379 1443 1436 1428 1549 AMUB 450 483 518 497 515 470 434 ARFB 420 373 453 451 462 378 350 ASDB 281 402 314 347 359 291 367 BEMB 1625 1603 1682 1662 1620 1633 1654 BETB 394 371 350 431 392 425 426 CADB 433 498 441 493 504 499 486 CHAB 605 737 749 625 699 734 677 CICB 485 461 459 516 500 494 514 CRPB 330 256 268 237 373 360 394 DIOB 456 413 395 479 471 369 399 DJIB 437 434 426 471 490 432 469 EASB 464 524 490 448 470 473 474 EVEB 293 318 242 254 270 252 274 FAIB o 1038 959 957 963 986 1042 993 FUTB 341 404 470 404 332 375 330 GAVB 257 238 139 264 282 224 238 GREB 506 443 563 500 580 554 540 HBMB 430 464 500 546 444 497 496 HEMB 321 448 434 332 368 373 346 JIUB 537 407 527 580 473 546 554 KETB 539 640 583 526 514 586 554 KIUB 586 578 623 619 569 602 602 KOLB 613 546 559 601 526 581 565 KRUB 449 479 378 427 497 420 488 LICB 457 396 401 487 410 374 476 MAHB 369 174 365 361 271 329 373 MALB 409 395 474 434 404 348 441 MANB o 427 444 441 502 504 485 459 MATB 495 566 517 492 491 37 0 METB 696 655 717 766 711 749 679 MIAB 458 403 434 452 451 322 461 MONB 498 567 558 558 519 586 515 MORB 447 492 499 493 379 395 505 MSPB 600 565 501 530 570 581 633 NOWB 361 269 303 324 418 253 306 PAQB 403 450 449 483 412 429 515 PDMB 12 0 0 0 0 13 0 REUB 421 380 360 390 320 343 420 REZB 749 708 648 694 737 688 648 RIKB 460 453 258 394 429 497 472 RIPB 627 658 626 698 615 596 600 ROTB 1144 1071 1074 927 980 920 924 SALB 432 632 516 453 486 399 529 SANB 538 515 492 501 623 455 538 SCRB 466 491 497 469 406 444 473 SODB o 480 408 462 507 394 414 463 SPJB 1448 1489 1569 1444 1545 1527 1481 SYPB 1293 1322 1301 1274 1236 1297 1377 THUB 1288 1232 1400 1297 1247 1405 1354 TLHA 601 547 504 566 543 606 544 TRIB o 607 590 512 437 532 447 387 YASB 591 573 456 573 573 551 613 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 3843 1569 1768 3165 AMUB 1208 549 655 1113 ARFB 1070 452 563 937 ASDB 829 385 540 863 BEMB 4411 1630 1849 4021 BETB 1030 500 680 831 CADB 1139 646 828 914 CHAB 1650 799 1185 1358 CICB 1248 703 750 952 CRPB 924 320 312 866 DIOB 866 710 741 825 DJIB 1030 647 781 923 EASB 1101 714 903 1074 EVEB 542 337 433 738 FAIB 2707 1038 1181 2541 FUTB 1053 404 544 961 GAVB 957 0 0 843 GREB 1379 638 703 1208 HBMB 1142 632 768 982 HEMB 982 454 425 928 JIUB 1325 697 777 1146 KETB 1380 664 846 1214 KIUB 1425 962 1109 1205 KOLB 1334 894 987 996 KRUB 1191 630 655 972 LICB 1092 558 585 925 MAHB 952 313 411 846 MALB 1078 564 755 924 MANB 1273 605 674 957 MATB 913 431 550 830 METB 1925 667 851 1808 MIAB 1056 525 636 1014 MONB 1225 757 835 1145 MORB 1023 602 789 942 MSPB 1359 681 899 1204 NOWB 948 312 289 804 PAQB 1143 525 682 983 PDMB 3 53 0 3 REUB 966 451 550 835 REZB 2286 525 617 1771 RIKB 1110 537 617 1035 RIPB 1945 489 603 1555 ROTB 3060 736 744 2800 SALB 1159 497 892 1077 SANB 1293 737 701 1086 SCRB 1144 529 707 977 SODB 1188 552 630 946 SPJB 3857 1612 1824 3564 SYPB 3406 1309 1519 3153 THUB 3190 1502 1786 3171 TLHA 1649 452 798 1298 TRIB 1166 629 905 1068 YASB 1344 720 895 1114 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 17.6 18.1 16.4 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -36.4 +- 2.9 mm TY = 18.4 +- 3.4 mm TZ = 56.4 +- 2.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.4 +- 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) ------------------------------------------------------------------ 7 1.00 0.43 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr