A Sigmoid-Enhanced Adaptive Weighted MUSIC Algorithm for Direction-of-Arrival Estimation
Keywords:
Direction-of-arrival estimation, MUSIC algorithm, adaptive weighting, sigmoid function, noise subspace estimation, partial eigen-decomposition.Abstract
Accurate direction-of-arrival (DOA) estimation is a core problem in array signal processing with applicationsin radar, sonar, and wireless communications. Classical MUSIC-based techniques provide high angular resolution butoften exhibit performance degradation in low signal-to-noise ratio environments and in the presence of closely spaced sources. In this paper, a Sigmoid-Enhanced Adaptive Weighted MUSIC (SEAW-MUSIC)
References
K. H. Yeap, and A. Khandare, “Sigmoid-enhanced robust adaptive beamforming for sensor arrays,” Signal, Image and Video Processing, vol. 19, no. 4, p. 304, 2025.


