A Digital Simulation of Clutter Rejection MTI Radars

Many techniques have been proposed to solve the problem of MTI in a clutter environment. These techniques can be classified into three categories depending on the types of information processed. A coherent IF system processes the signal at IF and makes use of both the amplitude and phase information to discriminate between the target and the clutter. A coherent video processor also uses both amplitude and phase but the detection is performed after shifting to a d-c center frequency. Non-coherent processing retains only amplitude information and the detection is done at video. The purpose of this study is to evaluate the performance of the three types of processors and to compare the relative merits of each in the detection problem.