Clutter spatial-temporal characteristics for forward-looking missile-borne diving radar

A multi-channel forward-looking missile-borne radar diving model is proposed in this paper with a formulation characterizing the relationship of clutter angle-Doppler response. The difference between the horizontal and diving platform is that an additional Doppler frequency is induced by the diving velocity. We show that the diving Doppler frequency leads to the clutter spectrum serious varying across range which increases the non-homogeneity of the training data and degrades the performance of the space-time adaptive processing (STAP). We numerically characterize the spatial-temporal clutter spectrum of forward-looking missile-borne diving array radar and discuss the influence of additional Doppler frequency caused by the diving velocity component.