Abstract:

In a wideband passive radar seeker (PRS) system, there exists angle ambiguity when a phase interferometer is used for direction finding. The ambiguity resolution method based on multi-baseline is restricted by less antenna array volume and large antenna cell dimension. In order to solve this problem, a fast wideband ambiguity resolution method based on circular array phase interferometer is proposed, which chooses a pair of reference baselines according to the incident signal to assure omnidirectional high measurement precision. Simulation results show the correctness and effectiveness of the proposed method.