Simultaneous detection of the acoustic-field aberration and Doppler shift in forward acoustic scattering  

作　　者：Chuan-Lin He Kun-De Yang Yuan-Liang Ma Bo Lei 何传林;杨坤德;马远良;雷波(Key Laboratory of Ocean Acoustics and Sensing （Northwestern Polytechnical University）, Ministry of Industry and Information Technology, Xi＇an 710072, China School of Marine Science and Technology, Northwestern Polytechnical University, Xi＇an 710072, China)

机构地区：[1]Key Laboratory of Ocean Acoustics and Sensing (Northwestern Polytechnical University), Ministry of Industry and Information Technology, Xi'an 710072, China [2]School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China

出　　处：《Chinese Physics B》2017年第1期229-236,共8页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11174235 and 61571366)

摘　　要：The aberration in the received acoustic field and the Doppler shift in the forward scattered field are simultaneously induced when a submerged target crosses the source–receiver line. Formulations for the two variations are developed upon an ideal forward scattering configuration. Both the field aberration and the Doppler shift are expressed as functions of the same argument — the target motion time. An experimental validation was carried out in a tank, in which the continuous wave was transmitted. The field aberration and the Doppler shift were extracted from the collected data by the simple Hilbert transform and a hybrid technique, respectively. The measured aberration and Doppler shift agree with the theoretical results.Simultaneous detection outputs are beneficial to enhance the reliability on target detection by providing both the aberrations in the received acoustic field and the Doppler shift in the forward scattered field.The aberration in the received acoustic field and the Doppler shift in the forward scattered field are simultaneously induced when a submerged target crosses the source–receiver line. Formulations for the two variations are developed upon an ideal forward scattering configuration. Both the field aberration and the Doppler shift are expressed as functions of the same argument — the target motion time. An experimental validation was carried out in a tank, in which the continuous wave was transmitted. The field aberration and the Doppler shift were extracted from the collected data by the simple Hilbert transform and a hybrid technique, respectively. The measured aberration and Doppler shift agree with the theoretical results.Simultaneous detection outputs are beneficial to enhance the reliability on target detection by providing both the aberrations in the received acoustic field and the Doppler shift in the forward scattered field.

关 键 词：forward scattering detection Doppler shift detection 

分 类 号：O422[理学—声学]