Author(s)

Mingyang Ma, Lie Chen, Jincheng Zhang, Yapeng Mao, Jucai Lin and Jun Yin

Corresponding Author

Mingyang Ma

ABSTRACT

This paper applied OPAST algorithm to DOA estimation of microphone array, then compared with traditional MUSIC algorithm by simulation and data processing. MUSIC algorithm needs eigenvalue decomposition when estimating DOA, it’s computationally expensive and complex, so it’s not easy to implement in engineering. OPAST algorithm obtains the signal subspace by tracking iteration, doesn’t need eigenvalue decomposition, the complexity is low and has great advantages in engineering implementation. The root mean square error of DOA estimation of MUSIC algorithm and OPAST algorithm under different SNR is verified by simulation, OPAST algorithm can achieve the same DOA estimation accuracy as MUSIC algorithm when SNR is high, but the complexity is greatly reduced.

KEYWORDS

Microphone Array, DOA Estimation, OPAST Algorithm, MUSIC Algorithm