Noise reduction method based on the gating technique for time-reversal MUSIC imaging

This paper introduces a time-reversal MUSIC (TR-MUSIC) approach based on the gating technique for detection and localization. TR-MUSIC has been proposed to surpass the classical diffraction limit. The general TR-MUSIC imaging algorithm uses a single snapshot to obtain a data matrix, however many snapshots are needed in a heavy noise environment. It is not preferable to require many snapshots because it takes a long measurement time. In this paper, we propose to reduce the noise component by using the gating technique accompanied with the Fourier transform. The proposed technique needs fewer snapshots and also provides a better performance.