Author:
Li P,Zhang X G,Zhang X Y,Liu Y
Abstract
Abstract
Focusing on the vertical array source signal recovery method, aiming at the estimation deviation caused by environment mismatch in the engineering application of virtual time reversal mirror technology, this paper proposes the normalized virtual time reversal technology through theoretical derivation and analyzes the performance of the virtual time reversal technology under the change of environment and signal-to-noise ratio through simulation. Finally, the practicability of the normalized virtual time reversal method and the effectiveness of model correction are verified through experimental data. The data processing results show that the source level estimation error of vertical array based on normalized virtual time reversal algorithm is less than 5.2dB. In the experimental environment of this paper, the correlation of signal spectral structure recovered by this method is about 5% higher than that by the traditional method.
Subject
Computer Science Applications,History,Education
Reference12 articles.
1. Acoustic source-level measurements for a variety of merchant ships;Scrimger;J. Acoustic. Soc. Am,1991
2. Error analysis and correction method of underwater vessel radiated noise measurement by vertical array and single hydrophone;Wu;Acta. Acustic.,2007
3. Optimal matrix-filter design;Vaccaro;IEEE Transactions on Signal Processing,1996
4. Adaptive surface interference suppression for matched-mode source localization;Kim;IEEE Journal of Oceanic Engineering,2010
5. A time-reversal mirror with variable range focusing;Song;J. Acoustic. Soc. Am.,1998