| 自适应线谱增强算法改进及其在轴频电场信号检测中的应用 |
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| 引用本文： | 胡鹏,龚沈光,蔡旭东.自适应线谱增强算法改进及其在轴频电场信号检测中的应用[J].武汉水运工程学院学报,2012(6):1217-1220. |
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| 作者姓名： | 胡鹏 龚沈光 蔡旭东 |
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| 作者单位： | [1]海军指挥学院信息战研究系,南京211800 [2]海军工程大学兵器工程系,武汉430033 [3]海军91388部队92分队,湛江524022 |
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| 基金项目： | 国防基金项目资助（批准号：5144407105JB11） |
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| 摘 要： | 在分析自适应线谱增强算法理论的基础上，对该算法进行了改进，即在增加相干累加算法的基础上，对几个输出误差进行加权处理，使得越接近当前时刻的误差其权值越大，从而使误差信息更接近于真实值．对实测数据和仿真数据的分析表明，在低信噪比情况下，文中算法能较好地检测到轴频电场信号的线谱，其性能要优于普通的自适应线谱增强算法．
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| 关 键 词： | 轴频电场 线谱 自适应线谱增强 改进算法 |
Improvement of Adaptive Line Enhancement and Its Application in Detection of Ship Shaft-Rate Electric Field Signal |
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| Authors: | HU Peng GONG Shenguang CAI Xudong |
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| Institution: | (Department of Information Warfare, Naval Command College, Nanjing 211800, China;Department of Weaponry Engineering, Naval Univ. of Engineering ,Wuhan 430033, China;92 Uint of 91388 Navy,Zhanjiang 524022,China) |
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| Abstract: | The purpose of this paper is to effectively extract the line spectrum of ship shaft-rate electric signal from ocean environmental electric field. After deeply analyzing the theory of adaptive line en- hancement algorithm, an improved adaptive line enhancement algorithm is introduced, in which coher- ent accumulative algorithm and output error weights are added. The error is closer to the current time, the weight is bigger. The effectiveness of the algorithm is verified by both the measured data and the simulated data. The verified result shows that the algorithm can detect line spectrum of target signal at the lower SNR situations efficiently compared to the ordinary adaptive line enhancement algo- rithm. |
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| Keywords: | shaft-rate electric field line spectrum adaptive line enhancement improved algorithm |
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