泄漏信号定位中的时延估计算法

杨荣根; 任明武; 杨静宇

泄漏信号定位中的时延估计算法

1.
南京理工大学计算机学院,江苏,南京,210094
2.
淮阴工学院计算机工程学院,江苏,淮安,223003

基金项目: 国家自然科学基金资助项目（60875010）

详细信息

作者简介:
杨荣根（1979- ），男，博士生，讲师．研究领域为信号与信息处理，信号稀疏分解．
任明武（1969- ），男，博士，教授，博士生导师．研究领域为图像处理与分析．
杨静宇（1941- ），男，教授，博士生导师．研究领域为模式识别．

中图分类号: TP181
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- 文章访问数: 1976
- HTML全文浏览量: 1
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出版历程
- 收稿日期: 2009-12-09
- 修回日期: 2010-04-19
- 发布日期: 2011-02-19

Time Delay Estimation Algorithms for Leak Signal Location

1.
School of Computer, Nanjing University of Science and Technology, Nanjing 210094, China
2.
School of Computer Engineering, Huaiyin Institute of Technology, Huai'an 223003, China

摘要

摘要: 分析了泄漏定位的基本原理、泄露信号模型，研究了各种时延估计算法（如相关、广义互相关方法，自适应最小均方方法等），这些时延估计算法因其抗噪性能不同而有其各自的应用场合．在一段合成的声波数据上进行了实验，利用各种算法分别在相同信噪比不同时延和相同时延不同信噪比的条件下进行时延估计，分析比较算法性能．将相关方法应用于输油管线泄漏检测定位，定位结果误差不超过5%．
- 时延估计 /
- 相位变换广义相关 /
- 最大似然广义相关 /
- 自适应最小均方 /
- 泄漏检测
Abstract: The basic principle of leak location and leak signal models are analyzed.A variety of time delay estimation (TDE) algorithms such as cross-correlation(CC),generalized cross-correlation(GCC),and the adaptive least mean square (LMS),etc.are also studied.These TDE algorithms which show different anti-noise capability,are applied to diverse application scenarios.Experiments are conducted on a synthesis acoustic signal to estimate the time delay and compare the performance of the algorithms in the conditions that time delay is diverse while the signal noise ratio is equivalent and time delay is equivalent while the signal noise ratio is diverse.The cross-correlation method is used to leak location for oil pipeline,and the error of location results is not more than 5%.
- time delay estimation /
- phase transform GCC /
- maximum likelihood GCC /
- adaptive least mean square /
- leak detection

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参考文献(8)

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[7]	Doclo S,Moonen M.Robust time-delay estimation in highly adverse acoustic environments[C]//Proceedings of the IEEE Workshop on Applications of Signal Processing to Audio and Acoustics.Piscataway,NJ,USA:IEEE,2001:59-62
[8]	李炜,朱芸.长输管线泄漏检测与定位方法分析[J].天然气工业,2005,25(6):105-109.Li W,Zhu Y.Analysis on leakage detection and location techniques for long transmission pipe line[J].Natural Gas Industry,2005,25(6):105-109.

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文章访问数: 1976
HTML全文浏览量: 1
PDF下载量: 223
被引次数: 0

泄漏信号定位中的时延估计算法

计量

出版历程

Time Delay Estimation Algorithms for Leak Signal Location

计量

出版历程

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