Abstract
A two-component compound Gaussian model is proposed for coherent radar sea clutter, with each component having its own spatial correlation. The slow component, centred near zero Doppler, is modulated in both frequency and intensity by gravity waves, while the fast component, offset in Doppler frequency, models scattering from breaking waves. The intensity of each component is represented by an independent gamma variate with its own scale and shape parameter, with the overall texture distributed as the sum of these two gamma variates, denoted G2. The model is compared to data collected at medium grazing angles with the DST Ingara airborne X-band radar. It can produce realistic simulations of coherent radar sea clutter.
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