Radar systems are faced with the problem of discriminating the useful target echoes from the interference background, which hides the target making its detection difficult. Thus, the taskof a radar processor is to decide whether or not the collected returns contain useful signal components. This problem can be formulated in terms of a binary hypothesis test [13] H0 : data contain interference only' H1 : data contain useful target and interference, where1 H0 is referred to as the null hypothesis and H1 as the alternative hypothesis.