Estimation of Amplitude Probability Density Function and Constant False Alarm Rate of Sea Clutter Observed by Millimeter Wave Radar

Abstract

We have investigated sea clutter amplitudes by a millimeter wave radar using an Akaike Information Cri-terion (AIC). It is shown that sea clutter obeys a log-Weibull distribution for all data and data within the beam width of an antenna. To suppress such sea clutter, we have applied the Constant False Alarm Rate (CFAR) procedure by the nonlinear transformation to the real data.