Direction of Arrival Estimation and Beamforming Using MUSIC Method

In array signal processing, we utilize four input signals and employ an eight-element uniform circular array for direction of arrival (DOA) estimation and beamforming. To achieve this objective, we implement the MUSIC (Multiple Signal Classification) method for signal processing. The MUSIC algorithm is a widely-used signal processing technique that enables us to extract target signals while suppressing interference signals through eigenvalue decomposition of the covariance matrix. By applying the MUSIC method, which involves calculating the spatial spectrum and identifying peak values corresponding to signal directions, we can achieve more accurate DOA estimation and form directional beams, thereby significantly improving signal processing performance. This technology features broad application prospects in fields such as communications, radar systems, and acoustic signal processing. Implementation typically involves constructing the array manifold matrix, computing signal subspace from covariance matrix decomposition, and performing spectral peak search to identify source directions.