An improved interferometer MUSIC joint direction finding algorithm

DOI:	10.11809/bqzbgcxb2023.11.030
Keywords:	radio direction finding; interferometer direction finding method; MUSIC direction finding method; error analysis
Abstract:	Among the radio direction finding methods, interferometer direction finding algorithm and MUSIC direction finding algorithm are mature and widely used in many fields, but each has its own advantages and disadvantages. Combining the advantages of the two methods, this paper proposes an improved interferometer MUSIC joint direction finding algorithm, which has higher direction finding accuracy and faster operation speed than the traditional interferometer direction finding method and MUSIC direction finding method. Firstly, the pitch angle cutting method is used to reduce the computation of the interferometer direction finding method. Then, on the basis of error analysis of interferometer direction finding method, the search range of MUSIC direction finding method is flexibly selected, so as to combine interferometer direction finding method with MUSIC direction finding method, improve the direction finding accuracy and operation speed, and enhance the robustness and applicability of the algorithm. Simulation analysis proves the effectiveness of the proposed algorithm. The improved joint direction finding algorithm proposed in this paper provides a technical reference for radio direction finding research.
Issue:	Vol. 44 No. 11 (2023)
Published:	2023-11-28
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