声学时间反转定位方法及其应用

Time Reversal Method and Applications for Acoustic Localization

引申自光学相位共轭法的声学时间反转法具有自适应聚焦特性,可以修正介质的不均匀和声干涉现象导致的波形畸变,有效克服多途效应,因而近年来颇受关注。阐述了时间反转法的基本理论,概述了其在超声、水声及室内声源定位领域中的发展概况及应用情况,最后展望了其应用前景。

Extending from the optical phase conjugation ,acoustic time reversal method with self- adaptive focusing prop- erty can modify the waveform distortion caused by uneven medium and interference of sound, and can effectively overcome the multi - path effect, therefore, it has become a hotspot in recent years. It is mainly described that the basic theory of a- coustic time reversal method in this paper, and summarized its development and applications in the areas of ultrasonic, un- derwater acoustic and sound source location in rooms. At the end of the paper, the application prospects of the method are discussed.