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提出一种基于波叠加法的近场声全息空间分辨率增强方法.该方法在波叠加法的基础上,利用全息面声压信号求得布置在全息面附近的虚源面上的简单源源强,再根据求得的简单源源强实现对全息面声压的插值,进而利用插值后的全息面声压数据进行重建.该方法可以提高近场声全息重建图像的空间分辨率,减少测量工作量,简化测量过程.通过仿真对影响插值结果的参数进行了分析,给出了合理的选取范围;通过仿真和实验研究验证了该方法的有效性.
A method based on wave superposition is proposed to enhance the spatial resolution of near-field acoustic holography based on the wave superposition method. The method uses the holographic sound pressure signal to obtain the simple source-source intensity And then interpolate the holographic surface acoustic pressure according to the obtained simple source, and then use the interpolated holographic surface acoustic pressure data to reconstruct the image.It can improve the spatial resolution of the near-field acoustic holographic reconstructed image and reduce the measurement workload , Simplifies the measurement process.The parameters that influence the interpolation result are analyzed by simulation and a reasonable selection range is given.The validity of the method is verified by simulation and experiment.