【摘要】 感音全息摄影技术已经取得了较高的横向分辨率,但轴向分辨率并不理想。在这个研究中将时间片应用到感音全息摄影的图像系统中,从而得到较高的轴向分辨率。利用时间片选择不同距离物体的反射信号。由检测信号的采样间隔决定轴向分辨率,传感器的孔径决定横向分辨率。模拟的结果表明应用这种方法可得到较好的轴向分辨率和横向分辨率。更多还原

【Abstract】 Acoustic holography has attained a high lateral resolution but a poor axial resolution.To achieve the high axial resolution,time slice is applied to an imaging system using acoustic holography.The time slice can select the reflected signals from object at different distances.In this method,the sampling interval of detected signal decides the axial resolution,and the aperture of the transducer decides the lateral resolution.更多还原