Title :
Estimation of ocean wave spectra from microwave backscatter and emissivity measurements
Author_Institution :
Naval Archit. & Marine Eng. Dept., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The microwave reflectivity of the ocean surface is determined mainly by the surface roughness or wave spectrum. Since direct measurement of the wave spectrum at centimeter wavelengths is very difficult, microwave measurements are currently the largest source of information for this region of the spectrum. This paper discusses a procedure to determine a form for the equilibrium spectrum that is consistent with backscatter measurements over a range of incidence angles and look directions, and presents results using the backscatter data summarized by the CMOD4 model function.
Keywords :
backscatter; emissivity; ocean waves; oceanographic techniques; radar cross-sections; reflectivity; remote sensing by radar; CMOD4 model; dimensionless modulation transfer function; equilibrium spectrum; microwave backscatter; microwave emissivity; microwave reflectivity; ocean surface; ocean wave spectrum; radar cross section; surface roughness; two-scale model predictions; Backscatter; Current measurement; Microwave measurements; Ocean waves; Rough surfaces; Sea measurements; Sea surface; Surface roughness; Surface waves; Wavelength measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1219870
