****************************************************************************** dorisreport 27-Sep-2012 20:25:43 Message No 3097 ****************************************************************************** Author: "Lemoine, Frank G. (GSFC-6980)" Subject: GSCWD12 SINEX SERIES Delivery (2012-0401 to 2012-0624 inclusive) SUMMARY OF GSC DORIS SUBMISSION September 27, 2012 SPECIAL NOTE 1: This is the first complete quarter since the demise of the Envisat spacecraft, hence no Envisat data are included in these operational solutions. SPECIAL NOTE 2: This will be the last delivery of the gscwd12 series. Future operational deliveries will be based on the gscwd13 series which apply modelling updates to the static and time-varying gravity field, ocean tides and ocean loading, troposphere model and mapping function. 1. List of files submitted SINEX files in Normal equation format. All files have 7 X and 7 Y EOP weekly parameters. gscwd12 series (Spot4, Spot5, Jason 2, Cryosat2) NAME DATE No. of Station Coord parms gsc12092wd12.snx 120401 123 gsc12099wd12.snx 120408 138 gsc12106wd12.snx 120415 132 gsc12113wd12.snx 120422 138 gsc12120wd12.snx 120429 123 gsc12127wd12.snx 120506 123 gsc12134wd12.snx 120513 126 gsc12141wd12.snx 120520 126 gsc12148wd12.snx 120527 129 gsc12155wd12.snx 120603 126 gsc12162wd12.snx 120610 135 gsc12169wd12.snx 120617 135 gsc12176wd12.snx 120624 120 2. POD summary of arcs used Satellite Orbit Modelling: 7 calendar arcs beginning on Sundays at 00:00:00 eigen-gl04s1 gravity field (to 120x120) using c(2,1)&s(2,1) from IERS standards ITRF-2008/DPOD-2008 version 1.3 station coordinates GOT4.7 ocean tide model (to 20x20) with ocean loading MSIS atmospheric density model ECMWF 6hr atmospheric gravity (to 50x50) 10 deg elevation cutoff angle Niell tropospheric mapping function External quaternion attitude data for Jason-2 only Solve combined normal equations for: 6 state parameters Drag (cd/2-hr, Envisat, SPOT4, SPOT5); (cd/8-hr, Jason2), (cd/6-hr, Cryosat 2) Once per revolution radial and cross track accelerations Troposphere & Range-rate biases (pass-by-pass) X and Y EOP with 1 meter constraint X, Y, Z station positions with 1 meter constraint Spot-4 START STOP NoDOR DORRMS(mm/sec) CR 120401 0000 0.00 120408 0000 0.00 35620 0.46940 1.0000 120408 0000 0.00 120415 0000 0.00 35826 0.50300 1.0000 120415 0000 0.00 120422 0000 0.00 34589 0.50620 1.0000 120422 0000 0.00 120429 0000 0.00 35355 0.51760 1.0000 120429 1100 0.00 120506 0000 0.00 33251 0.50720 1.0000 120506 0000 0.00 120513 0000 0.00 34299 0.49460 1.0000 120513 0000 0.00 120520 0000 0.00 34104 0.50180 1.0000 120520 0000 0.00 120527 0000 0.00 35284 0.51340 1.0000 120527 0000 0.00 120603 0000 0.00 35372 0.50540 1.0000 120603 0000 0.00 120610 0000 0.00 34870 0.50660 1.0000 120610 0000 0.00 120617 0000 0.00 35081 0.50880 1.0000 120617 0000 0.00 120620 2300 0.00 19584 0.52560 1.0000 120621 0030 0.00 120624 0000 0.00 14589 0.51620 1.0000 120624 0000 0.00 120701 0000 0.00 34084 0.50280 1.0000 Spot-5 START STOP NoDOR DORRMS(mm/sec) CR 120401 0000 0.00 120408 0000 0.00 63998 0.44500 1.0000 120408 0000 0.00 120415 0000 0.00 63958 0.49120 1.0000 120415 0000 0.00 120422 0000 0.00 64382 0.49240 1.0000 120422 0000 0.00 120429 0000 0.00 64163 0.48340 1.0000 120429 0000 0.00 120506 0000 0.00 64379 0.49520 1.0000 120506 0000 0.00 120513 0000 0.00 58984 0.49160 1.0000 120513 0000 0.00 120519 1600 0.00 59783 0.49000 1.0000 120519 1800 0.00 120520 0000 0.00 2316 0.44880 1.0000 120520 0000 0.00 120527 0000 0.00 64089 0.48580 1.0000 120527 0000 0.00 120603 0000 0.00 64902 0.49760 1.0000 120603 0000 0.00 120610 0000 0.00 64029 0.49300 1.0000 120610 0000 0.00 120617 0000 0.00 64915 0.48700 1.0000 120617 0000 0.00 120624 0000 0.00 63128 0.49620 1.0000 120624 0000 0.00 120701 0000 0.00 61182 0.50020 1.0000 Jason-2 START STOP NoDOR DORRMS(mm/sec) CR 120401 0000 0.00 120408 0000 0.00 127325 0.38100 0.9450 120408 0000 0.00 120415 0000 0.00 127533 0.38420 0.9450 120415 0000 0.00 120422 0000 0.00 125473 0.39400 0.9450 120422 0000 0.00 120429 0000 0.00 127622 0.40700 0.9450 120429 0000 0.00 120506 0000 0.00 126139 0.41220 0.9450 120506 0000 0.00 120513 0000 0.00 123343 0.40800 0.9450 120513 0000 0.00 120520 0000 0.00 111227 0.40700 0.9450 120521 0842 0.00 120527 0000 0.00 99456 0.38960 0.9450 120527 0000 0.00 120603 0000 0.00 126158 0.40360 0.9450 120603 0000 0.00 120610 0000 0.00 110731 0.40680 0.9450 120610 0000 0.00 120617 0000 0.00 128860 0.43100 0.9450 120617 0000 0.00 120624 0000 0.00 130129 0.44700 0.9450 120624 0000 0.00 120701 0000 0.00 126328 0.45060 0.9450 Cryosat-2 START STOP NoDOR DORRMS(mm/sec) CR 120401 0000 0.00 120408 0000 0.00 71615 0.46660 1.0000 120408 0000 0.00 120415 0000 0.00 72119 0.50400 1.0000 120415 0000 0.00 120419 0000 0.00 38260 0.46440 1.0000 120419 1200 0.00 120422 0000 0.00 24866 0.46520 1.0000 120422 0000 0.00 120429 0000 0.00 70159 0.50060 1.0000 120429 0000 0.00 120506 0000 0.00 69807 0.50100 1.0000 120506 0000 0.00 120513 0000 0.00 59847 0.50600 1.0000 120513 0000 0.00 120515 0000 0.00 18516 0.50380 1.0000 120520 0000 0.00 120527 0000 0.00 68541 0.50340 1.0000 120527 0000 0.00 120603 0000 0.00 69148 0.52560 1.0000 120603 0000 0.00 120610 0000 0.00 68545 0.52500 1.0000 120610 0000 0.00 120612 0000 0.00 19527 0.50720 1.0000 120617 0000 0.00 120624 0000 0.00 68157 0.51860 1.0000 120624 0000 0.00 120701 0000 0.00 65984 0.51580 1.0000 RMS of orbit differences: Doris only arc vs SLR/Doris arc (cm) j2120401 0.47905 1.64005 2.45341 j2120408 0.99481 2.29767 4.97870 j2120415 0.56159 2.70019 1.78523 j2120422 0.76524 2.63422 3.27181 j2120429 0.47757 2.77469 2.36536 j2120506 0.54254 2.47608 2.56768 j2120513 0.59613 2.74019 2.55641 j2120520 0.84046 2.62721 3.05639 j2120527 0.64184 2.35893 2.24724 j2120603 0.43929 2.14682 2.25629 j2120610 0.83177 2.75937 4.86478 j2120617 0.53962 3.94808 2.02735 j2120624 0.55828 2.83581 1.94012 c2120401 0.56303 3.00187 2.66195 c2120408 0.49368 1.45432 1.74122 c2120415 0.49313 1.98446 2.01183 c2120422 0.50863 2.46056 2.10036 c2120429 0.55671 1.94275 1.77198 c2120506 0.82315 2.95638 2.03163 c2120513 0.58624 2.93047 1.93460 c2120520 0.70202 1.96033 2.02044 c2120527 0.54461 2.16319 1.79364 c2120603 0.41821 2.32716 2.25716 c2120610 0.16480 1.35975 9.52096 c2120617 0.70323 2.31794 2.62163 c2120624 0.65830 2.29786 2.19638 3. Contact information for questions Frank Lemoine, GSFC/NASA Greenbelt, MD USA frank.g.lemoine@nasa.gov Douglas Chinn, SGT Inc., Greenbelt MD USA douglas.s.chinn@nasa.gov References: Le Bail, K. et al., GSFC DORIS Contribution to ITRF2008, Advances in Space Research, 45 (2010) 1481-1499. Zelensky, N. et al., DORIS/SLR POD modelling improvements for Jason-1 and Jason-2, Advances in Space Research, 46 (2010) pp.1541-1558 4. Internal comparison: Inversion of weekly combined normal equation and comparison with reference (ITRF2008). Stations used in comparisons (if sufficient data are available) ADGB AMVB ARFB ASEB BADB BEMB BETB CHAB CIDB COBB CRQB DIOB DJIB EASB EVEB GAVB GR3B GREB HBMB HEMB JIUB KETB KIUB KOLB KRBB KRWB LICB MAHB MALB MATB METB MIAB MSPB NOWB NOXB PAUB PDMB REUB REZB RILB RIMB RIQB ROVB SALB SANB SPJB SYPB THUB TLSB YASB YEMB WRMS, TX, TY, TZ, Scale in mm (with respect to the above reference station set) Note: stations with less than 1200 points are not used. Other outliers are also edited. Spot-4, Spot-5, Jason-2, Cryosat-2 solution Year Mon Day DOY No.of STA WRMS TX TY TZ Scale 2012 04 01 092 41 11.15 -3.14 -10.35 7.46 -8.24 2012 04 08 099 46 12.87 -9.63 -11.03 -5.29 -12.32 2012 04 15 106 44 13.07 -11.22 -8.48 5.68 -8.60 2012 04 22 113 46 11.85 -6.57 -6.23 -4.68 -12.58 2012 04 29 120 41 11.14 -8.85 -6.05 -2.88 -9.85 2012 05 06 127 41 12.83 -11.01 -12.13 -7.61 -9.84 2012 05 13 134 42 12.23 -7.57 -8.04 -6.41 -11.25 2012 05 20 141 42 11.51 -5.24 -4.66 -5.03 -8.33 2012 05 27 148 43 11.71 -4.90 -7.33 -6.35 -11.08 2012 06 03 155 42 12.69 -2.13 -4.61 -1.59 -10.35 2012 06 10 162 45 13.92 -3.24 -6.79 -2.60 -8.62 2012 06 17 169 45 12.97 -2.19 -4.80 -10.64 -10.98 2012 06 24 176 40 11.62 -3.37 -7.11 -9.66 -11.31 The WRMS excludes the ITRF2008 reference coordinates of Santiago after the earthquake of Feb 27, 2010. If Santiago were included in the WRMS, the WRMS would range between 20 and 25 mm. 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