****************************************************************************** dorisreport 08-Sep-2006 21:36:58 Message No 0679 ****************************************************************************** Author: Pascal Willis Subject: IGN/JPL DORIS Report for week 1386 = 06211 ============================================================== Summary report for weekly DORIS IGN/JPL Analysis solution GPS week number: 1386 from 30-07-2006 to 05-08-2006 DORIS name (using day of start): 06211 Days of year: from 2006/211 to 2006/217 ============================================================== 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/ign06211wd05.snx.Z weekly sinex in ITRF2000 pub/doris/products/sinex_series/ignwd/ign06211wd04.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., M. Heflin (2004), External validation of the GRACE GGM01C gravity field using GPS and DORIS positioning results, Geophys. Res. Lett., 31(13), L13616, DOI:10.1029/2004GL020038. 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. 4) Global Statistics ==================== GPS week number 1386 from 30-07-2006 to 05-08-2006 Total number of stations = 49 Total number of satellites = 4 Combinations (daily to weekly) CHI2 / DOF = 1.88 The following table only counts DORIS data that have passed CNES preprocesing step Individual daily DORIS statistics Day total_obs rejected valid_obs %_rejected -------------------------------------------------------- 30-07-2006 23596 13 23583 0.1 31-07-2006 23827 16 23811 0.1 01-08-2006 23396 17 23379 0.1 02-08-2006 22675 55 22620 0.2 03-08-2006 22090 10 22080 0.0 04-08-2006 21811 14 21797 0.1 05-08-2006 22816 24 22792 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 --------------------------------------------------------------- ENVISAT 6742 6593 6385 6428 6117 6046 6407 SPOT2 4407 4686 4572 4418 4536 4321 4523 SPOT4 4950 4883 5119 4899 4778 4641 4776 SPOT5 7484 7649 7303 6875 6649 6789 7086 5.2) Doppler residuals per satellite in mm/s -------------------------------------------- day1 day2 day3 day4 day5 day6 day7 -------------------------------------------------------------- ENVISAT 0.407 0.423 0.408 0.419 0.398 0.417 0.435 SPOT2 0.440 0.434 0.427 0.403 0.406 0.406 0.464 SPOT4 0.421 0.455 0.451 0.416 0.401 0.410 0.417 SPOT5 0.361 0.384 0.358 0.374 0.359 0.366 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 1491 1382 1445 1467 1444 1454 1461 AMTB 423 461 474 414 498 538 501 ASDB 312 343 266 294 396 310 358 BEMB 801 832 837 507 0 0 0 CADB 552 540 533 480 503 489 534 CHAB 720 699 706 699 716 728 655 CICB 479 433 486 503 456 434 493 CROB 354 374 389 305 310 376 328 DIOB 411 494 396 439 0 0 436 DJIB 476 458 487 434 465 470 490 EASB 479 480 472 458 574 512 436 EVEB 281 219 230 283 314 257 240 FAIB o 1064 899 1098 1054 1010 1088 1004 FUTB 421 474 447 375 437 436 340 GAVB 212 243 206 236 228 153 236 GREB 494 413 493 511 519 418 488 HBKB 555 464 533 461 477 533 515 HEMB 261 424 374 340 443 407 311 KESB 519 574 558 532 595 525 503 KIUB 577 585 602 620 542 594 605 KOLB 583 541 526 590 523 508 592 KRUB 420 505 440 495 479 381 485 LICB 515 390 466 425 388 375 479 MAHB 186 351 382 365 361 337 387 MALB 442 382 416 462 418 454 360 MANB o 482 443 0 0 0 0 0 MATB 457 461 451 370 498 480 493 METB 718 697 704 701 675 709 728 MIAB 445 443 439 442 424 421 438 MONB 520 553 581 492 500 574 559 MORB 396 411 522 472 449 495 498 MSPB 483 482 571 584 421 0 0 PAQB 556 440 550 560 502 456 528 PDMB 409 490 495 432 490 503 442 REUB 403 385 347 400 332 400 392 REZB 672 732 731 682 630 710 596 RIPB 633 659 628 673 696 664 756 ROTB 1090 1143 1200 1290 1403 1399 1407 SALB 412 529 428 385 600 456 430 SANB 589 595 597 590 558 504 577 SCRB 499 502 533 510 498 492 425 SODB o 483 423 443 468 402 471 506 SPJB 1454 1497 1498 1408 1490 1526 1580 SYPB 1358 1325 1280 1453 1476 1432 1509 THUB 1375 1341 1340 1301 1315 1446 1314 TLHA 523 500 591 534 495 534 551 TRIB o 540 526 463 507 562 481 482 YASB 533 537 540 568 594 494 467 YELB 805 804 457 0 0 415 841 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 3914 1688 1700 3171 AMTB 1178 547 676 1067 ASDB 802 414 490 742 BEMB 1065 317 515 1198 CADB 1300 675 844 995 CHAB 1644 1046 1142 1356 CICB 1220 615 709 970 CROB 903 480 426 745 DIOB 677 499 529 618 DJIB 1128 696 739 942 EASB 1102 850 928 914 EVEB 517 373 338 664 FAIB 2852 1009 1208 2450 FUTB 1106 575 647 855 GAVB 890 0 0 757 GREB 1360 524 652 1063 HBKB 1357 655 610 1116 HEMB 1010 425 475 831 KESB 1416 734 698 1145 KIUB 1305 1007 951 1230 KOLB 1296 826 946 1082 KRUB 1179 658 633 922 LICB 1075 602 591 920 MAHB 906 375 424 855 MALB 1007 704 605 843 MANB 365 167 170 289 MATB 1196 531 603 1070 METB 1874 689 846 1756 MIAB 1122 660 493 956 MONB 1282 752 850 1106 MORB 1056 663 827 896 MSPB 858 521 535 748 PAQB 1108 851 894 1004 PDMB 1139 538 655 1084 REUB 950 459 516 928 REZB 2094 659 582 1664 RIPB 2057 536 636 1646 ROTB 3624 1288 1264 3059 SALB 1145 643 756 895 SANB 1435 731 866 1203 SCRB 1170 701 770 978 SODB 1225 570 593 1012 SPJB 3809 1637 1845 3458 SYPB 3636 1653 1753 3108 THUB 3410 1531 1727 3060 TLHA 1698 470 569 1208 TRIB 1180 840 806 953 YASB 1280 847 794 1038 YELB 1146 479 538 1295 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 14.9 18.9 14.9 7.2) Geocenter estimation -------------------------- Geocenter estimation as provided by 7-parameter transformation to ign04d02 TX = -34.8 +- 1.9 mm TY = 18.6 +- 1.9 mm TZ = 48.0 +- 1.9 mm 7.3) Scale factor ----------------- Scale factor / ITRF2000 using reference ign04d02 S = -2.2 +- 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 2.08 1.35 ============================================================== Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr