Adaptive waveform diversity for cross-channel interference mitigation

In this paper we investigate the impact of the presence of an interfering radar on the target direction of arrival (DOA) estimation performed by the reference radar. The DOA estimator is a modified version of the pseudo-monopulse technique that, using adaptive waveform diversity in transmission, can mitigate the dependence of the estimation accuracy on the interfering signal. The importance of using proper coding in multi-user radar system is highlighted with reference to a simple scenario of two radars and the root-mean square error (RMSE) of the estimator is numerically evaluated in different operational conditions.