Multi-Baseline Combination Method for High-precision 2D Direction-finding Based on Wideband Conformal Antenna Array

A new direction-finding method named Multi-Baseline Combination Method (MBCM) is proposed for 2D direction-finding based on wideband conformal antenna array which is used in anti-radiation seeker. First, through geometry modeling and analysis, conventional interferometer which can achieve 1D direction-finding is extended to double-baseline interferometer which can achieve 2D direction-finding. Then, to tackle the angle-measure ambiguity problem, multi-baseline combination method is presented, which resolves the angle-measure ambiguity through a minimization problem. Finally, extensive experiments validate the feasibility and effectiveness of the proposed method.