A Novel Technique for Preventing Signal Cancellation in Space-Time Adaptive Processing

This paper addresses the issue of space-time adaptive processing (STAP) when the target signal is present in the training data. Target cancellation will occur in the STAP processing when the target signal leaks into the neighbouring range-gates for estimating clutter covariance matrix. In this paper, some linear constraints are added both on target signal and clutter to prevent target signal from being cancelled when the target signal is in the estimated covariance matrix. Computer simulation results verified the efficiency of the proposed algorithm.