功率谱估计在超声波桩检中的应用研究

The Study on Checking Piles Based on Modern Power Spectral Estimation

公路桥梁桩基施工中,利用超声波检测施工质量是有效的手段,但如果耦合面不好,测得的反射波将不能直观读出。采用现代功率谱估计技术,对测量信号处理后的效果比较理想。

It＇s a effective measure to check the quality of piles by using ultrasonic. The reflection wave can＇t be shown directly if coupling degree with pile is bad. But it can be shown better if the signal has been filtered by modern power spectral estimation.