A filter order selection method of clutter suppression filters with cascade connection using signal power ratio for staggered PRF

A clutter suppression method using time-varying transversal FIR filters applicable for search radar with staggered PRF operation has been presented. Because such a clutter suppression filter has no method controlling filter order automatically, order of every filter needs to be determined beforehand. In this paper we propose a method for determining the overall filter order by comparing the power of the input and output signal of each first-order filter with cascade connection.