****************************************************************************** dorisreport 18-Aug-2007 01:49:14 Message No 0973 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1437 = 07203 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1437 from 22-07-2007 to 28-07-2007 DORIS name (using day of start): 07203 Days of year: from 2007/203 to 2007/209 ============================================================== 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/ign07203wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07203wd04.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 1437 from 22-07-2007 to 28-07-2007 Total number of stations = 51 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 -------------------------------------------------------- 22-07-2007 18779 6 18773 0.0 23-07-2007 19099 9 19090 0.0 24-07-2007 23627 6 23621 0.0 25-07-2007 24480 12 24468 0.0 26-07-2007 24465 5 24460 0.0 27-07-2007 23786 6 23780 0.0 28-07-2007 20232 1 20231 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 6364 6557 6765 6802 6878 6800 3132 SPOT2 0 0 4027 4373 4435 4003 4134 SPOT4 5055 5137 5269 5495 5458 5399 5254 SPOT5 7354 7396 7560 7798 7689 7578 7711 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.428 0.444 0.421 0.416 0.408 0.409 0.394 SPOT2 0.000 0.000 0.451 0.453 0.457 0.446 0.444 SPOT4 0.427 0.432 0.437 0.426 0.434 0.449 0.431 SPOT5 0.393 0.397 0.386 0.381 0.374 0.380 0.370 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 1200 1152 1418 1395 1388 1380 932 AMUB 409 389 538 477 518 374 413 ARFB 307 374 411 461 468 377 290 ASDB 339 275 342 416 323 318 319 BEMB 1480 1470 1610 1836 1757 1795 1576 BETB 339 317 423 425 377 460 357 CADB 399 319 464 478 421 464 454 CHAB 568 558 756 758 715 679 584 CICB 373 366 533 477 468 508 385 CRPB 280 261 291 208 374 359 251 DIOB 291 352 458 474 447 376 387 DJIB 360 390 427 486 455 417 394 EASB 376 411 475 394 510 500 420 EVEB 249 227 261 264 259 253 283 FAIB o 842 881 987 915 992 1007 820 FUTB 292 378 440 441 388 300 369 GAVB 245 196 221 271 243 235 148 GREB 425 479 507 529 520 493 318 HBMB 175 264 508 399 529 435 408 HEMB 323 409 423 357 464 387 343 JIUB 366 481 512 483 531 561 439 KETB 481 489 567 623 561 580 467 KIUB 467 454 625 595 596 520 516 KOLB 454 353 593 628 558 649 489 KRUB 364 372 424 466 447 304 394 LICB 341 321 483 462 458 449 331 MAHB 293 282 399 401 380 315 275 MALB 346 360 474 426 470 426 387 MANB o 337 359 445 425 392 471 317 MATB 444 452 542 632 500 417 448 METB 596 619 736 712 670 696 524 MIAB 371 324 419 501 512 432 392 MONB 404 497 527 483 504 515 416 MORB 354 372 474 467 413 498 353 MSPB 474 389 474 450 576 619 394 NOWB 348 275 291 359 355 375 227 REUB 268 311 428 433 346 362 344 REZB 645 645 601 705 806 673 448 RIKB 363 437 426 382 347 406 373 RIPB 527 545 692 815 774 776 499 SALB 491 466 494 528 577 424 483 SANB 447 345 508 558 545 550 462 SCRB 343 373 453 431 447 529 398 SODB o 339 327 502 426 365 451 329 SPJB 1224 1316 1509 1530 1506 1495 1186 STJB 497 655 560 648 668 564 538 SYPB 1103 1171 1355 1353 1287 1320 1165 THUB 1089 1170 1286 1352 1351 1304 1004 TLSB 548 458 479 572 680 653 435 YASB 530 405 457 536 613 532 451 YEMB 0 0 440 869 742 892 706 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 3363 916 1704 3183 AMUB 1118 376 646 1102 ARFB 952 297 595 952 ASDB 922 306 499 902 BEMB 4605 1141 2242 4047 BETB 958 439 696 848 CADB 1078 338 821 928 CHAB 1497 731 1207 1343 CICB 1084 515 760 962 CRPB 836 137 341 850 DIOB 848 476 792 895 DJIB 1024 367 763 950 EASB 1068 571 856 1088 EVEB 481 271 463 750 FAIB 2617 546 1202 2597 FUTB 1041 374 533 957 GAVB 904 0 4 801 GREB 1295 371 646 1183 HBMB 1086 433 699 1005 HEMB 1002 445 525 954 JIUB 1228 450 803 1131 KETB 1337 559 856 1177 KIUB 1340 599 1084 1221 KOLB 1213 662 1036 994 KRUB 1154 226 690 867 LICB 987 390 700 898 MAHB 969 290 480 873 MALB 952 482 726 944 MANB 1143 241 622 966 MATB 1176 475 705 1205 METB 1764 488 825 1777 MIAB 1108 407 680 989 MONB 1197 402 794 1149 MORB 986 417 752 951 MSPB 1147 432 749 1202 NOWB 842 207 484 823 REUB 878 374 521 881 REZB 1921 368 669 1887 RIKB 1110 256 630 973 RIPB 1909 518 753 1645 SALB 1181 476 886 1061 SANB 1200 537 730 1090 SCRB 1010 428 660 974 SODB 1089 407 605 935 SPJB 3526 1133 1834 3586 STJB 1500 427 1097 1454 SYPB 3379 970 1534 3147 THUB 2985 951 1827 3115 TLSB 1517 360 843 1292 YASB 1151 501 960 1085 YEMB 2155 520 829 1865 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 18.4 23.4 19.7 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -25.8 +- 2.6 mm TY = 15.7 +- 2.5 mm TZ = 69.7 +- 2.3 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.7 +- 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 1.51 0.61 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr