Broadband Coherent Source DOA Estimation with Enhanced Spatial Resampling

This program utilizes the Coherent Signal Subspace Method to perform DOA estimation for broadband coherent sources. We have enhanced the conventional approach by implementing spatial resampling of the focus matrix to improve estimation accuracy. The core functionality involves constructing the spatial focus matrix through sophisticated algorithms that perform frequency-domain coherent combination and covariance matrix alignment. Key implementation aspects include: - Frequency-dependent steering vector computation across broadband spectrum - Covariance matrix transformation using focusing matrices at different frequency points - Spatial resampling techniques to mitigate coherence loss between frequency bins - Singular value decomposition (SVD) operations for subspace alignment - Weighted averaging of transformed covariance matrices for final DOA estimation This enhanced methodology provides users with more accurate and reliable DOA estimation results, effectively meeting practical requirements for broadband coherent source localization in array signal processing applications.