提高声全息成像分辨率的有限频谱重建法

A limited frequency spectrum method for improving resolution of acoustical holographic imaging

本文提出用脉冲波声全息提高成像分辨率（特别是纵向分辨率）的新方法。理论分析及模拟计算表明，利用脉冲信号的有限谱分析及成像系统对有限谱的响应，脉冲波的全息重建比连续波具有较高的分辨率。在此基础上，利用重建波相位识别及解卷技术，能进一步提高其分辨率。

Abstract: In order to improve the resolution of acoustical holography, a new method, i. e. pulse wave holography, has been presented in the article. Theortical analysis and computer simulation show that using the limited frequency spectrum of pulse wave and the response to the limited frequency spectrum of the system, the pusle wave holography has a better resolution than the continuous wave one. Besides. adopting the phase information of reconstructed wave and deconvolution technology, the resolution can be improved further.