Performance of Non-Parametric CFAR Detectors in Log-Normal and K Radar clutter

In this work, the performance of logt-, GMOS-(Geometric Mean Order Statistic), TMOS-(Trimmed MOS) and IE-CFAR (Inclusion/ Exclusion) detectors are investigated in presence of log-normal and K distributed clutter. First, for a finite number of clutter samples, dependence of the false alarm probability PFA upon clutter parameters is examined. The CFAR property for the case of log-normal clutter is maintained while the PFA depends somewhat on the shape parameter of the K distribution. Then, by carrying out Monte-Carlo simulations, we show that for the case of log-normal clutter a small detection difference exists between the underlying CFAR detectors. In the case of K-distributed clutter, there is a significant detection difference for small values of the shape parameter (spiky clutter case).