A method for improving the performance of MVDR beamforming

摘要

Minimum Variance Distortionless signal Response (MVDR) beamforming can be used as a wavenumber spectrum (bearing) estimation, whose precision or resolution is determined primarily by signal-to-noise ratio. This paper presents a method for improving MVDR beamforming bearing resolution by using an enhancement factor in its weight vector design for emulating a high signal—to—noise ratio condition which is known to be a principal factor in resolution improvement. This method can provide improved resolution not at the expense of signal—to noise plus interference ratio gain. Some of computer simulation results are also given.