Application of improved fourth order cumulants in acoustic pyrometry

doi:10.3778/j.issn.1002-8331.2010.08.068

Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (8): 234-237.DOI: 10.3778/j.issn.1002-8331.2010.08.068

• 工程与应用 • Previous Articles Next Articles

Application of improved fourth order cumulants in acoustic pyrometry

GE Hui，CHEN Ping

College of Computer Science and Technology，Shandong University of Technology，Zibo，Shandong 255049，China

Received:2008-09-18 Revised:2008-12-10 Online:2010-03-11 Published:2010-03-11
Contact: GE Hui

改进的四阶累积量算法在声学测温中的应用

葛慧，陈平

山东理工大学计算机科学与技术学院，山东淄博 255049

通讯作者: 葛慧

Abstract

Abstract: The accurate transmitted time of sound wave in acoustic pyrometry has the vital significance.But it possibly enables the background noise to change when the boiler under the different capacity，the different load，and the different time.The scene chamber background noise unceasing change has caused the SNR unceasing change.The disadvantages of some traditional methods of TDE are shown.By using the improved fourth order cumulants，accurate sound wave transit time survey is realized under the low SNR and the SNR change environment.

Key words: acoustic pyrometry, time delay estimation, cross-correlation, improved fourth order cumulants

摘要： 准确的声波飞渡时间在声学测温中具有非常重要的意义，但是不同容量、不同负荷、不同时刻下运行的锅炉都可能使得背景噪声发生变化。现场炉膛背景噪声的不断变化引起了信噪比的不断变化。指出了声学测温中几种传统的时延估计方法的不足，通过改进的四阶累积量算法，实现了低信噪比、信噪比变化环境下的准确声波飞渡时间的测量。

关键词: 声学测温, 时间延迟估计, 互相关, 改进的四阶累积量算法

CLC Number:

TP391

GE Hui，CHEN Ping. Application of improved fourth order cumulants in acoustic pyrometry[J]. Computer Engineering and Applications, 2010, 46(8): 234-237.

葛慧，陈平. 改进的四阶累积量算法在声学测温中的应用[J]. 计算机工程与应用, 2010, 46(8): 234-237.

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Application of improved fourth order cumulants in acoustic pyrometry

改进的四阶累积量算法在声学测温中的应用

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