FN Archimer Export Format
PT J
TI An Ocean Wind Doppler Model Based on the Generalized Curvature Ocean Surface Scattering Model
BT 
AF SAID, Faozi
   JOHNSEN, Harald
   CHAPRON, Bertrand
   ENGEN, Geir
AS 1:1;2:2;3:3;4:2;
FF 1:;2:;3:PDG-ODE-LOS;4:;
C1 NOAA, Ocean Surface Winds Team, Ctr Satellite Applicat & Res, College Pk, MD 20740 USA.
   Norut, Earth Observat Grp, N-9294 Tromso, Norway.
   IFREMER, Lab Oceanog Space, F-29280 Brest, France.
C2 NOAA, USA
   NORUT, NORWAY
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-LOS
UM LOPS
IN WOS Ifremer jusqu'en 2018
   copubli-europe
   copubli-int-hors-europe
IF 3.36
TC 6
UR https://archimer.ifremer.fr/doc/00283/39411/39116.pdf
LA English
DT Article
DE ;Doppler measurements;geophysical measurement techniques;sea surface;synthetic aperture radar (SAR)
AB A Doppler centroid D-C model based on the generalized curvature ocean surface scattering model (generalized curvature model or GCM) is presented. Two key features are included in this model: a skewness-related phase coefficient based on empirical skewness coefficients of sea-surface-slope probability density function (pdf) for wind speed less than 10 m/s and effects from wave breaking for wind speed greater than 10 m/s. Simulated D-c values are exclusively compared with the empirical geophysical Doppler model function named CDOP, for hh and vv polarizations, various wind conditions, and incidence angles. Good agreement is found overall between CDOP and simulated D-C values. The overall bias for simulated Dc-vv with and without skewness are 2.63 versus -0.51 Hz (14.6 versus -2.8 cm/s), respectively; overall standard deviations are 2.76 versus 3.53 Hz (15.3 versus 19.6 cm/s). For simulated DC-hh, overall bias values with and without skewness are -0.16 versus -2.52 Hz (-0.9 versus -14 cm/s); standard deviations are 3.56 versus 4.32 Hz (19.7 versus 24 cm/s). The overall bias for simulated Dc-vv with and without the wave breaking component are -0.08 versus 0.12 Hz (-0.4 versus 0.7 cm/s), respectively; corresponding standard deviations are 3.32 versus 4.75 Hz (18.4 versus 26.3 cm/s). Bias values for simulated Dc-vv with and without the wave breaking component are -1.83 versus -2.02 Hz (-10.2 versus -11.2 cm/s), with corresponding overall standard deviations of 3.43 versus 4.87 Hz (19 versus 27 cm/s). The largest deviation from CDOP, of about 18 Hz (0.99 m/s), is found in the upwind direction for a 26 incidence angle, 10-m/s wind speed, and hh polarization.
PY 2015
PD DEC
SO Ieee Transactions On Geoscience And Remote Sensing
SN 0196-2892
PU Ieee-inst Electrical Electronics Engineers Inc
VL 53
IS 12
UT 000361532400025
BP 6632
EP 6638
DI 10.1109/TGRS.2015.2445057
ID 39411
ER

EF