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 variatio...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.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.11174235 and 61571366)
文摘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.
