Adaptive clutter map detector in nonhomogeneous environment

The Ordered Data Variability (ODV) technique is introduced into hybrid clutter map/L-CFAR technique, which is used to process the echoes on the clutter map spatially. The new method is called as Clutter Map/ODV (CM/ODV) technique. An analytic expression of detection probability in homogeneous environment is presented, and detection performance in three different situations in nonhomogeneous environment is analyzed. The CM/ODV can censor interfering targets adaptively and prevent the masking effect, moreover, it doesn´t need any priori information, so the new kind of clutter map technique performs robustly.