Research of Beam Domain MVDR and Motion Compensation

Abstract

Minimum variance distortionless response (MVDR) beamformer is a better target detection method, which provided high-resolution and anti-interference abilities. But the nice features will be degraded significantly for a fast bearing-rate target. Because the eigenvalue of longtime integral correlation matrix will spread, the signal and interference are no longer clearly identified by the eigenvectors. A beam domain MVDR and motion compensation arithmetic is given in this paper. The motion effect can be compensated by tracking the signal bearing change using real time estimated beam domain covariance matrix. The detection ability of moving target can be improved.