Coherent detection of radar signals in G-distributed clutter

The G distribution has been proposed as a new model for extremely heterogeneous clutter in SAR returns. We develop a technique for estimating the parameters of the G distribution, show that the G distribution represents an amplitude distribution of a spherically invariant random process for certain values of its parameters, and design coherent detectors for known and unknown signals embedded in G-distributed clutter. The performance of the detectors under specific conditions is then provided.