Title :
Radar image study of simulated breaking waves
Author :
Kim, Hyunjun ; Johnson, Joel T.
Author_Institution :
Intel Corp., Chandler, AZ, USA
fDate :
10/1/2002 12:00:00 AM
Abstract :
Radar images of electromagnetic scattering from one-dimensional simulated ocean breaking waves are described. Backscatter results from 10-14 GHz at 60° to 80° incident angles are considered for surfaces that satisfy an impedance boundary condition. The generalized forward-backward method with spectral accelerations was used as an exact numerical solution to obtain backscatter returns from several surface profiles, and radar images are formed through back-projection tomography. Detailed investigations of the images are provided to clarify major and secondary scattering events, as well as the polarization dependence, and a ray-tracing analysis is performed to interpret multipath scattering mechanisms. By adding surface roughness outside the breaking region, small-scale roughness scattering effects are also investigated.
Keywords :
backscatter; electromagnetic wave scattering; ocean waves; radar imaging; 10 to 14 GHz; 1D simulated ocean breaking waves; EM scattering; back-projection tomography; backscatter returns; generalized forward-backward method; impedance boundary condition; incident angles; multipath scattering mechanisms; polarization dependence; radar images; radar imaging; ray-tracing analysis; secondary scattering events; small-scale roughness scattering effects; spectral accelerations; surface profiles; surface roughness; wave breaking region; Backscatter; Boundary conditions; Electromagnetic scattering; Oceans; Radar imaging; Radar scattering; Rough surfaces; Sea surface; Surface impedance; Surface roughness;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2002.802475
