MVDR (Minimum Variance Distortionless Response) High-Resolution Direction-of-Arrival Estimation Method

Based on Capon's MVDR (Minimum Variance Distortionless Response) high-resolution direction-of-arrival estimation method, MVDR has received extensive attention for its simple algorithm and outstanding performance, establishing itself as a digital beamforming method with strong practical prospects. The core implementation involves calculating the sample covariance matrix from array sensor data and solving for optimal weights that minimize output power while maintaining unity gain in the look direction. Additionally, MVDR effectively suppresses interference and noise, enhancing signal resolution capabilities. Consequently, the MVDR method finds broad applications in wireless communications, radar systems, and acoustic signal processing. Looking forward, we can expect MVDR to demonstrate its advantages in more domains, bringing further innovations and advancements through implementations featuring robust covariance matrix inversion techniques and adaptive filtering architectures.