水下网络突发分组前导码检测的自适应阈值算法

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	水下网络突发分组前导码检测的自适应阈值算法
	房栋 ; 李宇 ; 尹力
刊名	应用声学
	2010
卷号	29 期号:2
ISSN号	1000-310x
其他题名	An Adaptive Threshold Algorithm for Preamble Detection of Burst Packet in Underwater Networks
通讯作者	房栋
中文摘要	本文针对水声信道的特点,提出了一种适于水下传感器网络突发通信分组前导码检测的自适应阈值算法.该算法根据估计的信号瞬时功率自适应地调整阈值,以取代固定阈值算法中的预设常数阈值.进行了理论分析和仿真,证明该算法具有恒虚警的特点,检测概率比固定阈值算法有明显的提高.针对检测到相关函数旁瓣的情况,加入了滑动窗口.该算法经过了湖试验证,性能良好,具有实用价值.
英文摘要	In consideration of the underwater acoustic fading channel, an adaptive threshold algorithm is proposed for preamble detection of burst communication packet in underwater sensor networks. Instead of taking a predetermined constant as in a constant threshold algorithm, the threshold is adjusted according to the instantaneous signal power estimation. Theoretical analysis and computer simulation are performed which show that the algorithm has the characteristics of the constant false-alarm detection, and that the detection probability is dearly improved, compared to that of the constant threshold detection. In order to solve the problem that side lobe appears, a sliding window is introduced. With lake experiment, this algorithm is proved to achieve good performance and be proper for practical application.
收录类别	其他
资助信息	声学所
语种	中文
公开日期	2011-11-25
内容类型	期刊论文
源URL	[http://159.226.59.140:8080/handle/311008/1640]
专题	声学研究所_综合声纳技术实验室_期刊论文
推荐引用方式 GB/T 7714	房栋,李宇,尹力. 水下网络突发分组前导码检测的自适应阈值算法[J]. 应用声学,2010,29(2).
APA	房栋,李宇,&尹力.(2010).水下网络突发分组前导码检测的自适应阈值算法.应用声学,29(2).
MLA	房栋,et al."水下网络突发分组前导码检测的自适应阈值算法".应用声学 29.2(2010).