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基于循环谱的快速信号搜索 被引量:1
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作者 汤素华 尹华锐 徐佩霞 《电路与系统学报》 CSCD 2003年第1期85-88,共4页
传统的短波干扰电台以扫频的方式,基于信号功率谱来搜索信号,对调制特性缓变的信号有不错的效果, 但是很难捕获像自动线路建立信号(ALE)这样的短暂信号。本文提出一种基于循环谱的宽带快速搜索方法,在10dB 时对ALE的搜索成功率在90%以上。
关键词 循环谱 快速信号搜索 循环平稳 模板匹配 自动线路建立 短波通信 调制信号
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FAST MUSIC SPECTRUM PEAK SEARCH VIA METROPOLIS-HASTINGS SAMPLER 被引量:5
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作者 Guo Qinghua Liao Guisheng 《Journal of Electronics(China)》 2005年第6期599-604,共6页
A fast MUltiple SIgnal Classification (MUSIC) spectrum peak search algorithm is devised, which regards the power of the MUSIC spectrum function as target distribution up to a constant of proportionality, and uses Metr... A fast MUltiple SIgnal Classification (MUSIC) spectrum peak search algorithm is devised, which regards the power of the MUSIC spectrum function as target distribution up to a constant of proportionality, and uses Metropolis-Hastings (MH) sampler, one of the most popular Markov Chain Monte Carlo (MCMC) techniques, to sample from it. The proposed method reduces greatly the tremendous computation and storage costs in conventional MUSIC techniques i.e., about two and four orders of magnitude in computation and storage costs under the conditions of the experiment in the paper respectively. 展开更多
关键词 MUltiple Signal Classification (MUSIC) algorithm Metropolis-Hastlngs (MH)sampler Markov Chain Monte Carlo (MCMC)
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