| 改进的四阶累积量算法在声学测温中的应用 |
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| 引用本文： | 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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| 作者姓名： | 葛慧 陈平 |
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| 作者单位： | 山东理工大学,计算机科学与技术学院,山东,淄博,255049 |
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| 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。
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| 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 |
| 收稿时间： | 2008-9-18 |
| 修稿时间： | 2008-12-10
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Application of improved fourth order cumulants in acoustic pyrometry |
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| GE Hui,CHEN Ping.Application of improved fourth order cumulants in acoustic pyrometry[J].Computer Engineering and Applications,2010,46(8):234-237. |
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| Authors: | GE Hui CHEN Ping |
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| Affiliation: | GE Hui,CHEN Ping College of Computer Science , Technology,Sh,ong University of Technology,Zibo,Sh,ong 255049,China |
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| 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 meth-ods 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 SN... |
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| Keywords: | acoustic pyrometry time delay estimation cross-correlation improved fourth order cumulants |
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