| 基于功率谱估计的管道超声测厚研究 |
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| 引用本文： | 唐建,戴波. 基于功率谱估计的管道超声测厚研究[J]. 北京石油化工学院学报, 2005, 13(1): 18-22 |
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| 作者姓名： | 唐建 戴波 |
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| 作者单位： | 1. 北京化工大学,北京,100029
2. 北京石油化工学院,北京,102617 |
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| 摘 要： | 管壁厚度的测量是长输管道无损检测的主要内容之一,对于超声探头接收的回波信号,若采用经典谱估计法处理,则其分辨率较低.笔者采用Burg最大熵法,对超声波回波信号进行了处理,以提高谱的分辨率.模拟结果证明了该方法的正确性和实用性.
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| 关 键 词： | 超声测厚 功率谱 周期图法 Burg最大熵法 信号处理 |
| 修稿时间： | 2004-09-20 |
Research on Ultrasonic Measurement of Pipeline Thickness Based on Power Spectral Estimation |
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| Tang Jian,Dai Bo. Research on Ultrasonic Measurement of Pipeline Thickness Based on Power Spectral Estimation[J]. Journal of Beijing Institute of Petro-Chemical Technology, 2005, 13(1): 18-22 |
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| Authors: | Tang Jian Dai Bo |
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| Abstract: | Measurement of pipeline thickness is one of the main contents of nondestructive inspection on long distance pipeline. While processing the echo signal received by ultrasonic probes, the classic spectrum estimation method may cause some problems with its low resolution. In order to increase the spectral resolution, Burg maximum entropy method is adopted for ultrasonic echo signal processing. The correctness and the practicality of this method are shown by simulation results. |
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| Keywords: | ultrasonic measurement of thickness power spectrum periodogram method Burg maximum entropy method signal processing |
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