Signal and Information Processing - MATLAB Algorithms for Array Signal Processing DOA Estimation

This article covers the field of signal and information processing, focusing on Direction of Arrival (DOA) estimation in array signal processing and its implementation using MATLAB. We provide complete source code that includes implementations of both Root-MUSIC and MVDR algorithms. The Root-MUSIC algorithm implementation features polynomial root-solving techniques for spectral estimation, while the MVDR (Minimum Variance Distortionless Response) code demonstrates covariance matrix inversion and beamforming optimization. These well-documented source codes are highly valuable for helping readers understand fundamental signal processing concepts and algorithmic implementations. Additionally, we provide sample datasets containing array sensor measurements, enabling readers to independently test algorithm performance and accuracy through parameter tuning and result visualization. The code includes functions for array geometry configuration, signal covariance matrix computation, and spatial spectrum plotting. This resource aims to assist readers interested in signal processing and array signal processing by providing deeper theoretical understanding and hands-on implementation experience.