| 一种新的自相关函数载波频率估计算法 |
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| 引用本文： | 尹显东,王甲峰. 一种新的自相关函数载波频率估计算法[J]. 西南师范大学学报(自然科学版), 2012, 37(7): 51-56 |
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| 作者姓名： | 尹显东 王甲峰 |
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| 作者单位： | 中国工程物理研究院电子工程研究所,四川绵阳,621900 |
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| 基金项目： | 中国工程物理研究院科学技术发展基金“非合作无线通信信号分析技术研究” |
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| 摘 要： | 针对非协作信号,提出一种新的自相关函数载波频率估计算法.在分析自相关函数特性的基础上,构造代价函数,通过频率搜索的方法估计载波频率,而不是直接求相位角.仿真结果表明,与现有自相关函数载波估计算法相比,该算法不仅在估计精度上有很大提高,而且对载波频率没有限定,只要满足采样定理即可.另外,该算法在理论上是完备的,所以不存在失效的风险.
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| 关 键 词： | 载波频率估计 自相关函数 代价函数 |
A Novel Estimation of Carrier Frequency on the Basis of Autocorrelation |
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| YIN Xian-dong , WANG Jia-feng. A Novel Estimation of Carrier Frequency on the Basis of Autocorrelation[J]. Journal of southwest china normal university(natural science edition), 2012, 37(7): 51-56 |
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| Authors: | YIN Xian-dong WANG Jia-feng |
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| Affiliation: | Institute of Electronic Engineering,China Academic of Engineering Physics,Mianyang Sichuan 621900,China |
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| Abstract: | A novel algorithm of carrier frequency estimation by means of autocorrelation has been proposed.The cost function has been constructed on the basis of analysis of the autocorrelation function,and the carrier frequency has been estimated through frequency searching instead of directly deriving the phase.Simulation results show that the algorithm in this paper is more accurate than the existed methods and the value of the carrier frequency is not limited if it meets the sampling theory.Otherwise,the theoretical analysis is sufficient and there is no risk that the algorithm will be disabled. |
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| Keywords: | carrier frequency estimation autocorrelation function cost function |
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