High-resolution direction finding of coherent sources in the presence of model errors using alternating projections

Direction finding with coherent source waveforms is of practical importance in radar array processing, e.g. for specular multipath propagation. Furthermore, high-resolution methods require an accurately calibrated array. In this paper, we combine local and global manifold correction with maximum likelihood direction finding using the method of alternating projections. We use simulations to study the effect of array errors and noise. We further apply the combined algorithm to real data recorded using a radar array for an automotive application.