| 基于海杂波散射特性的微弱信号检测方法 |
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| 引用本文： | 贺静波,刘忠,胡生亮. 基于海杂波散射特性的微弱信号检测方法[J]. 物理学报, 2011, 60(11): 110208-110208. DOI: 10.7498/aps.60.110208 |
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| 作者姓名： | 贺静波 刘忠 胡生亮 |
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| 作者单位： | 海军工程大学电子工程学院,武汉 430033 |
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| 基金项目： | 中国博士后科学基金(批准号:20100471795)和湖北省自然科学基金(批准号:2009CDB337)资助的课题. |
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| 摘 要： | 从研究海杂波的电磁散射特性出发,利用随机微分理论对海杂波的物理特性进行了系统地分析.首先建立了海杂波电磁散射所满足的随机微分方程,然后利用Itô公式得到了海杂波散射信号幅度和相位的扩散过程模型,最后利用海杂波散射信号的规律给出了微弱信号检测的相关处理方法.关键词：随机微分方程海杂波散射微弱信号
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| 关 键 词： | 随机微分方程 海杂波 散射 微弱信号 |
| 收稿时间： | 2010-08-16 |
Detection of weak signal based on the sea clutter scattering |
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| He Jing-Bo,Liu Zhong and Hu Sheng-Liang. Detection of weak signal based on the sea clutter scattering[J]. Acta Physica Sinica, 2011, 60(11): 110208-110208. DOI: 10.7498/aps.60.110208 |
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| Authors: | He Jing-Bo Liu Zhong Hu Sheng-Liang |
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| Affiliation: | Electronics Engingeering College, Naval University of Engineering, Wuhan 430033, China;Electronics Engingeering College, Naval University of Engineering, Wuhan 430033, China;Electronics Engingeering College, Naval University of Engineering, Wuhan 430033, China |
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| Abstract: | Sea clutter scattering is analyzed in the paper. The stochastic differential equations are given for the physical quality of sea clutter. The diffusion process model is built by using Ito formula. These processes are represented as Ito stochastic differential equations, which enables the identificating their stochastic volatilities with certain free functions that serve as calibrating the model. Finally the correlation detection method is used to detect weak signal from sea clutter. |
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| Keywords: | stochastic differential equation sea clutter scattering weak signal |
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