|
|||||
|
|
| 高噪声背景下超声信号数字处理技术研究 | |
| 引用本文： | 曹茂永,王霞,郁道银. 高噪声背景下超声信号数字处理技术研究[J]. 仪器仪表学报, 2002, 23(2): 200-202 |
| 作者姓名： | 曹茂永 王霞 郁道银 |
| 作者单位： | 1. 天津大学,天津,300072;教育部光电信息科学与技术重点实验室,天津,300072;山东科技大学信息与电气工程学院,济南,250031 2. 山东科技大学信息与电气工程学院,济南,250031 3. 天津大学,天津,300072;教育部光电信息科学与技术重点实验室,天津,300072 |
| 基金项目： | 原煤炭工业部科学基金项目 |
| 摘 要： | 实现高噪声背景下超声回波信号的可靠识别在工程实际中非常重要。本文对高噪声背景下的超声测距信号进行了傅里叶频谱分析和成分分析， 在此基础上确定了频率滤波的滤波范围，并进行了滤波处理。提出了用自相关技术实现高噪声背景下超声回波信号识别的方法，建立了相应的数学模型，给出了理论分析和实验结果。 |
| 关 键 词： | 超声检测 数字信号处理 噪声 |
| 修稿时间： | 2000-07-01 |
Research on Digital Processing Technology of Ultrasonic Signal in High-noise Background |
|
| Cao Maoyong ,, Wang Xia Yu Daoyin . Research on Digital Processing Technology of Ultrasonic Signal in High-noise Background[J]. Chinese Journal of Scientific Instrument, 2002, 23(2): 200-202 | |
| Authors: | Cao Maoyong Wang Xia Yu Daoyin |
| Affiliation: | Cao Maoyong 1,2,3 Wang Xia 3 Yu Daoyin 1,2 1 |
| Abstract: | It is very important to achieve the reliable recognition of the ultrasonic echo signal in high noise background in engineering field.This paper gives the Fourier analysis and component analysis of ultrasonic signal in high noise background.Based on that,the filtering range of digital filter is determined and the signal is digitally filtered.The auto correlation method of recognition of ultrasonic echo signal in high noise background is proposed and the corresponding mathematical model is established.The theoretical analysis and experimental results are also given. |
| Keywords: | Ultrasonic testing Digital signal processing Noise |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |