Method for processing the signal for an adaptive beamformer using sub-band steering covariance matrix

摘要

The present invention relates to a signal processing method of an adaptive beamformer. More specifically, when calculating the beam output using sensor data in an underwater detection device such as a sonar, by calculating narrowband and wideband beam outputs using the sub-band steering covariance matrix, a problem of singular matrix occurrence due to frequency dependency elimination and inverse matrix operation is solved so that the orientation resolution of the adaptive beamformer can be improved.