****************************************************************************** dorisreport 31-Jul-2007 02:45:42 Message No 0950 ****************************************************************************** Author: WILLIS Pascal Subject: IGN/JPL DORIS Report for week 1433 = 07175 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1433 from 24-06-2007 to 30-06-2007 DORIS name (using day of start): 07175 Days of year: from 2007/175 to 2007/181 ============================================================== 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/ign07175wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign07175wd04.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 1433 from 24-06-2007 to 30-06-2007 Total number of stations = 53 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 2.11 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 24-06-2007 23954 5 23949 0.0 25-06-2007 23695 5 23690 0.0 26-06-2007 23984 9 23975 0.0 27-06-2007 24157 6 24151 0.0 28-06-2007 23943 8 23935 0.0 29-06-2007 24727 21 24706 0.1 30-06-2007 24433 5 24428 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 6674 6629 6862 6721 6733 7093 6921 SPOT2 4156 4275 4384 4608 4294 4081 4298 SPOT4 5288 5196 5181 5133 5115 5487 5450 SPOT5 7831 7590 7548 7689 7793 8045 7759 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.410 0.405 0.414 0.442 0.425 0.407 0.420 SPOT2 0.446 0.431 0.440 0.454 0.433 0.442 0.456 SPOT4 0.428 0.433 0.434 0.427 0.430 0.418 0.430 SPOT5 0.375 0.368 0.381 0.387 0.385 0.377 0.380 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 1352 1457 1502 1356 1446 1448 1450 AMUB 443 428 504 500 518 483 519 ARFB 391 423 380 445 403 471 455 ASDB 319 343 361 369 327 340 307 BEMB 1555 1678 1703 1641 1671 1629 1588 BETB 383 437 414 430 400 428 395 CADB 494 506 531 470 503 528 464 CHAB 676 707 736 759 726 753 683 CICB 473 440 495 469 452 520 489 CRPB 360 231 269 252 338 219 355 DIOB 406 417 358 466 463 431 405 DJIB 482 448 425 471 487 507 455 EASB 474 492 463 506 466 444 466 EVEB 246 219 300 307 240 224 254 FAIB o 991 1006 1042 992 1046 938 914 FUTB 318 392 392 443 437 445 376 GAVB 243 246 235 207 213 254 269 GREB 481 550 481 510 511 531 492 HBMB 429 446 443 471 561 480 472 HEMB 363 378 348 440 415 238 329 JIUB 554 543 468 530 532 515 562 KETB 542 553 542 616 577 593 572 KIUB 626 600 631 617 572 540 560 KOLB 579 626 584 509 567 616 562 KRUB 445 397 459 459 402 434 513 LICB 417 409 438 427 402 477 514 MAHB 370 264 354 315 235 425 308 MALB 476 450 441 456 461 392 419 MANB o 462 450 399 457 408 454 449 MATB 461 537 568 595 445 571 504 METB 696 750 663 723 760 753 712 MIAB 511 410 421 437 425 474 483 MONB 581 599 513 561 575 521 485 MORB 468 511 414 437 479 488 441 MSPB 590 563 583 489 461 559 577 NOWB 402 267 397 283 268 364 327 PAQB 430 473 437 443 457 473 396 PDMB 10 15 0 0 0 11 14 REUB 371 467 388 343 421 463 330 REZB 805 657 790 791 662 643 802 RIKB 430 470 434 434 427 369 383 RIPB 602 689 623 620 625 753 575 ROTB 814 694 707 959 1081 982 1198 SALB 563 484 473 607 504 408 482 SANB 561 559 572 501 503 559 558 SCRB 486 466 479 469 491 412 408 SODB o 453 427 465 419 464 467 418 SPJB 1515 1544 1394 1528 1529 1443 1386 STJB 0 0 0 0 226 681 717 SYPB 1261 1312 1367 1355 1306 1350 1218 THUB 1394 1369 1305 1376 1391 1379 1245 TLHA 552 496 555 502 498 581 599 YASB 533 574 637 576 529 486 621 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 3824 1500 1708 3264 AMUB 1233 526 679 1122 ARFB 1101 465 573 977 ASDB 920 370 500 867 BEMB 4322 1646 1940 3990 BETB 988 549 704 882 CADB 1109 735 780 1021 CHAB 1618 1045 1183 1349 CICB 1168 652 790 976 CRPB 908 184 351 751 DIOB 918 671 738 896 DJIB 1058 709 755 914 EASB 1131 821 839 1015 EVEB 520 290 390 747 FAIB 2686 975 1213 2558 FUTB 1105 558 500 938 GAVB 999 6 3 859 GREB 1354 496 676 1226 HBMB 1152 570 771 971 HEMB 1048 380 439 822 JIUB 1377 737 917 1052 KETB 1492 716 779 1156 KIUB 1450 863 1126 1194 KOLB 1290 822 1099 1064 KRUB 1152 547 699 965 LICB 1104 524 677 922 MAHB 863 340 457 853 MALB 1087 641 714 902 MANB 1138 498 641 1003 MATB 1280 633 697 1239 METB 1910 789 827 1797 MIAB 1143 531 620 1094 MONB 1314 716 841 1094 MORB 1114 676 724 962 MSPB 1323 713 755 1181 NOWB 893 195 449 920 PAQB 1203 536 649 994 PDMB 1 94 0 4 REUB 913 543 584 900 REZB 2376 469 756 1903 RIKB 1193 479 691 830 RIPB 1930 561 574 1608 ROTB 2818 581 720 2610 SALB 1317 591 866 962 SANB 1327 637 816 1188 SCRB 1185 447 721 940 SODB 1159 549 652 960 SPJB 3794 1521 1853 3504 STJB 1525 847 1052 1323 SYPB 3512 1345 1469 3132 THUB 3315 1504 1858 3079 TLHA 1548 415 717 1301 YASB 1399 699 906 1140 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 13.8 20.9 18.2 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -21.7 +- 2.3 mm TY = 29.4 +- 2.3 mm TZ = 69.2 +- 2.1 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -1.6 +- 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 1.44 0.52 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr