FN Archimer Export Format
PT J
TI Analytical Techniques for the Doppler Signature of Sea Surfaces in the Microwave Regime-I: Linear Surfaces
BT 
AF NOUGUIER, Frederic
   GUERIN, Charles-Antoine
   SORIANO, Gabriel
AS 1:1;2:3;3:2;
FF 1:PDG-ODE-LOS;2:;3:;
C1 IFREMER, Lab Oceanog Spatiale, F-29280 Plouzane, France.
   Univ Aix Marseille 3, Ctr Natl Rech Sci, Unite Mixte Rech 6133, Inst Fresnel, F-13397 Marseille, France.
   Univ Sud Toulon Var, Unite Mixte Rech 6017, Lab Sondages Electromagnet Environm Terr, Ctr Natl Resch Sci,Geosci & Remote Sensing Dept, F-83957 La Garde, France.
C2 IFREMER, FRANCE
   UNIV AIX MARSEILLE, FRANCE
   UNIV TOULON, FRANCE
SI BREST
SE PDG-ODE-LOS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.895
TC 22
UR https://archimer.ifremer.fr/doc/00054/16524/14379.pdf
LA English
DT Article
DE ;Doppler spectrum;gravity waves;microwave;remote sensing;rough surfaces;scattering;sea surface
AB This paper is the first in a series of two papers on the use of combined improved hydrodynamic and electromagnetic analytical models for the simulation of the ocean Doppler spectrum at microwave frequencies. Under a linear assumption for the sea surface, we derive statistical expression for the main Doppler characteristics according to asymptotic scattering models. We consider classical models such as the Kirchhoff approximation and the two-scale model, as well as the more recent weighted curvature approximation (WCA). We recover two salient features of Doppler signature in the microwave regime. First, the Doppler characteristics are very sensitive to polarization, with higher mean Doppler shift in horizontal polarization. This is correctly rendered by the WCA but not the classical models. Second, the first two moments of the Doppler spectrum exhibit a nontrivial dependence on incidence angle. Results compare favorably with rigorous numerical computations for 1-D surfaces published in the literature. The simplicity and accuracy of the analytical models provide a valuable tool for the Doppler analysis of 2-D sea surfaces.
PY 2011
PD DEC
SO Ieee Transactions On Geoscience And Remote Sensing
SN 0196-2892
PU Ieee-inst Electrical Electronics Engineers Inc
VL 49
IS 12
UT 000297281500017
BP 4856
EP 4864
DI 10.1109/TGRS.2011.2152848
ID 16524
ER

EF