****************************************************************************** dorisreport 04-Apr-2012 08:59:51 Message No 2882 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1676 = 12050 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1676 from 19-02-2012 to 25-02-2012 DORIS name (using day of start): 12050 Days of year: from 2012/50 to 2012/56 ============================================================== Author: Pascal Willis 1) Contacts =========== Email pascal.willis@ign.fr Phone +33-1-4427-2484 FAX +33-1-4427-7340 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/ign12050wd08.snx.Z weekly sinex in ITRF2008 pub/doris/products/sinex_series/ignwd/ign12050wd10.snx.Z geocenter series in ITRF2008 pub/doris/products/geoc/ign11wd01.geoc.Z Earth Orientation Parameters time series in ITRF2008 pub/doris/products/eop/ign11wd01.eop.Z 3) Analysis Strategy ==================== The DORIS data have been processed using the Gipsy/Oasis software from 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/ignwd08.snx.dsc weekly sinex in ITRF2008 pub/doris/products/sinex_series/ignwd/ignwd10.snx.dsc geocenter series in ITRF2008 pub/doris/products/geoc/ign11wd01.geoc.dsc Earth Orientation Parameters time series in ITRF2008 pub/doris/products/eop/ign11wd01.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., Boucher, C., Fagard, H., Goginddass, M.L. (2010), Contributions of the French Institut Geographique National (IGN) to the International DORIS Service, Adv. Space Res., 45(12), 1470-1480 DOI: 10.1016/j.asr.2009.09.019 Changes in data processing: #week 1568: goa-test.2010.03.25b Use Bulletin-A as a priori instead of Bulletin-B #week 1574: goa-test.2010.03.31e Same executable but with /DEV scripts (all official version) #week 1579: goa-test.2010.04.28a Same executable without any DEV scripts #week 1580: goa-test.2010.05.25h Major change affecting solar array orientation for SPOT5 after Jan 2008 see details in Gobinddass et al., Adv. Space Res., 2009 #week 1597: goa-test.2010.09.20c More recent version, close to future 6.0 official version for tests #week 1599: goa-test.2010.05.25h Back to previous test version #week 1606: goa-6.0 Latest JPL official version #week 1487: goa-test-2011.03.17b Including Jason-2 and Cryosat-2 data deleting stations in the South Atlantic Anomaly (SAA) for SPOT-5 reprocessing done for weeks: 736-738 + 955-995 + 1124-1131 + 1487-1619 #week 1632: goa-test-2011.05.11b Minor change (deleting unecessary files) #week 1649: correct bug in estimating CRYOSAT2 drag Estimating every hour in the multi-satellite mode (instead of previously once per day) also estimate CONST_L terms for TOPEX and JASON2 every 8 hours (instead of previously once per day) #week 1656: test.2011.09.27c Minor change: do not use DEV scripts anymore 4) Global Statistics ==================== GPS week number 1676 from 19-02-2012 to 25-02-2012 Total number of stations = 50 Total number of satellites = 5 Combinations (daily to weekly) CHI2 / DOF = 2.44 the following satellites were used in the combination 2012 50 cryosat2 envisat jason2 spot4 spot5 2012 51 cryosat2 envisat jason2 spot4 spot5 2012 52 cryosat2 envisat jason2 spot4 spot5 2012 53 cryosat2 envisat jason2 spot4 spot5 2012 54 cryosat2 envisat jason2 spot4 spot5 2012 55 cryosat2 envisat jason2 spot4 spot5 2012 56 cryosat2 envisat jason2 spot4 spot5 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 19-02-2012 49068 79 48989 0.2 20-02-2012 49260 57 49203 0.1 21-02-2012 49607 57 49550 0.1 22-02-2012 48028 86 47942 0.2 23-02-2012 47818 129 47689 0.3 24-02-2012 45232 82 45150 0.2 25-02-2012 47259 55 47204 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 ----------------------------------------------------------------- CRYOSAT2 9409 9579 9539 9194 9211 9086 9025 ENVISAT 8138 8305 8444 7813 7882 6064 7663 JASON2 17830 17703 17585 17641 17330 16747 17324 SPOT4 4804 5075 5365 4940 4817 4700 5070 SPOT5 8808 8541 8617 8354 8449 8553 8122 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 --------------------------------------------------------------- CRYOSAT2 0.438 0.442 0.437 0.443 0.437 0.430 0.432 ENVISAT 0.435 0.446 0.451 0.445 0.458 0.462 0.452 JASON2 0.398 0.400 0.408 0.400 0.406 0.427 0.416 SPOT4 0.441 0.439 0.458 0.432 0.423 0.438 0.453 SPOT5 0.400 0.405 0.396 0.404 0.422 0.400 0.393 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 --------------------------------------------------------------- ADGB 495 429 422 418 432 484 424 AMVB 423 412 399 404 414 415 409 ARFB 267 341 408 311 313 270 354 ASEB 288 233 297 273 271 323 298 BADB 543 465 489 434 540 501 529 BEMB 1479 1488 1513 1384 1345 1487 1494 BETB 375 384 401 389 369 385 382 CHAB 551 580 595 616 567 602 610 CIDB 252 348 338 317 315 357 323 COBB 732 816 764 746 833 760 773 CRQB 268 292 244 286 224 278 262 DIOB 267 287 292 237 254 268 243 DJIB 378 333 356 373 352 355 319 EASB 393 423 392 385 329 363 409 EVEB o 194 183 233 212 202 209 180 GAVB 274 238 218 202 243 270 197 GR3B 0 0 0 0 0 0 0 GREB 470 497 420 483 413 460 483 HBMB 415 486 484 460 449 409 487 HEMB 275 338 383 403 288 88 0 JIUB 299 371 411 412 316 318 422 KETB 398 401 364 434 433 418 385 KIUB 358 444 464 396 480 428 422 KOLB 404 432 484 447 490 469 357 KRBB 587 565 601 645 570 493 551 KRWB 287 306 357 204 308 232 313 LICB 383 371 297 306 368 252 348 MAHB 265 311 219 0 0 0 0 MALB 0 0 0 0 168 323 363 MANB o 379 357 432 335 412 305 303 MATB o 382 310 349 360 312 332 330 METB 514 489 543 529 528 539 481 MIAB 437 348 423 386 402 442 361 MSPB 458 506 518 443 420 470 476 NOXB 454 340 408 310 388 503 365 PAUB 419 434 458 361 449 415 407 PDMB o 407 343 368 390 351 387 392 REUB 268 273 248 280 366 274 247 REZB 569 526 537 68 0 0 0 RIQB 167 232 212 206 191 153 238 ROVB 1026 986 1017 959 994 949 934 SALB 306 295 353 315 257 251 367 SANB o 348 294 363 356 405 366 259 SPJB 1195 1325 1253 1294 1291 1271 1308 STJB o 547 533 536 592 537 515 573 SYPB 1059 1040 1106 1077 1091 1096 1034 THUB 1288 1352 1302 1364 1242 1321 1293 TLSB 588 574 580 541 577 575 552 YASB 510 440 470 479 378 434 450 YEMB 466 470 483 489 511 478 455 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) ----------------------------------------------------------------- CRYOSAT2 ENVISAT JASON2 SPOT4 SPOT5 --------------------------------------------- ADGB 5216 0 5365 0 3235 AMVB 1746 1272 3743 688 1100 ARFB 1387 951 2830 619 888 ASEB 1161 900 2323 475 822 BADB 2078 1658 4462 670 1388 BEMB 6583 4506 4513 2081 4079 BETB 1366 1130 2694 844 949 CHAB 2337 1678 5046 1271 1394 CIDB 1330 1096 2750 548 922 COBB 2824 2214 5315 1710 1726 CRQB 2075 816 4252 420 833 DIOB 1558 858 3604 280 805 DJIB 1502 1052 2974 764 895 EASB 1144 1218 2708 937 1075 EVEB 633 466 1524 406 696 GAVB 985 900 3980 0 869 GR3B 1768 6 4172 6 5 GREB 1791 1455 4309 701 1190 HBMB 1594 1284 3173 1111 958 HEMB 1256 800 2189 372 717 JIUB 1390 1194 2984 762 1016 KETB 2390 1356 4728 494 1183 KIUB 1427 1235 3338 907 1087 KOLB 1761 1241 3470 962 1046 KRBB 1870 1911 4053 797 1586 KRWB 1337 985 2783 852 850 LICB 1276 1043 2637 578 925 MAHB 968 672 1730 342 593 MALB 834 560 1722 437 598 MANB 1641 1157 3013 560 985 MATB 2276 1195 4542 246 1103 METB 2795 1838 4707 243 1806 MIAB 1879 1261 3460 635 1092 MSPB 2047 1360 4144 845 1208 NOXB 1584 1251 3236 638 1067 PAUB 1484 1227 2909 997 1016 PDMB 1618 1252 3981 426 1119 REUB 1393 860 2911 420 851 REZB 1573 905 1907 197 758 RIQB 678 492 520 302 720 ROVB 4726 3324 5220 854 2939 SALB 1488 1052 2834 671 813 SANB 1660 1263 3647 259 1113 SPJB 6500 4037 4084 1833 3350 STJB 1908 1598 4447 991 1409 SYPB 4186 3555 4168 1106 3170 THUB 6377 4025 4599 1853 3652 TLSB 1632 1567 4188 1309 1305 YASB 1749 1383 3656 794 1171 YEMB 3873 8 5063 1107 2367 6.4) statistics per station and per satellite (deleted stations) ---------------------------------------------------------------- CRYOS ENVISAT JA2 SPOT4 SPOT5 --------------------------------------------- 7) External Comparisons ======================= (for information) 7.1) Stations coordinates ------------------------- Looking at the transformation results Comparing with solution tf_110726a at epoch of observations Weekly DORIS residuals in mm N E V ------------------- WRMS 10.1 8.4 11.1 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to tf_110726a TX = -0.9 +- 1.0 mm TY = -13.9 +- 0.9 mm TZ = -14.9 +- 0.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2008 using reference tf_110726a S = 1.4 +- 0.1 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 0.29 0.23 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr