超声波压力检测中回波搜索算法

Algorithm on the Echo Searching for Ultrasonic Pressure Measuring

通过对超声波压力测量中回波信号特征的分析 ,提出了回波自动搜索算法。该方法把快速傅立叶变换方法和小波多分辨率信号分解相结合 ,精确地检测出回波的包络信号 ,从而准确地搜索到回波 ,为后续的压力信号处理及提高压力测量的精度奠定了基础。

The algorithm for echo searching is proposed based on the analysis of ultrasonic echo signal. The method can detect the signal envelopment and search the echo accurately by using FFT and wavelet multiresolutionl decomposition knowledge . on the basis of this , the accuracy of pressure measuring is improved greatly.