| 基于GPS信号的海面目标被动探测 |
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| 引用本文： | 马建国,曹可劲,张磊,李豹. 基于GPS信号的海面目标被动探测[J]. 系统工程与电子技术, 2011, 33(5): 987. DOI: 10.3969/j.issn.1001-506X.2011.05.05 |
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| 作者姓名： | 马建国 曹可劲 张磊 李豹 |
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| 作者单位： | 1.海军工程大学电气与信息工程学院, 湖北 武汉 430033; 2. 海军91959部队, 海南 三亚 572021;3. 海军航空工程学院科研部, 山东 烟台 264001 |
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| 摘 要： | 在分析海面反射GPS信号规律的基础上,研究了海面目标通过第1菲涅尔区对GPS信号C/A码相关能量影响的规律,提出了通过检测海面反射信号相关能量变化的方法来探测海面目标。用左旋圆极化天线和软件接收机对该方法进行了地面接收试验,结果表明，当目标穿越第1菲涅尔区时会引起GPS反射信号相关能量的显著变化,通过对反射信号相关能量进行累积平滑处理可以检测这种变化,从而达到探测目标的目的。
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| 关 键 词： | 全球定位系统 反射 相关能量 海面目标 被动探测 |
Passive detection of marine targets based on GPS signals reflected from sea surface |
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| MA Jian-guo,CAO Ke-jing,ZHANG Lei,LI Bao. Passive detection of marine targets based on GPS signals reflected from sea surface[J]. System Engineering and Electronics, 2011, 33(5): 987. DOI: 10.3969/j.issn.1001-506X.2011.05.05 |
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| Authors: | MA Jian-guo CAO Ke-jing ZHANG Lei LI Bao |
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| Affiliation: | 1. Electrical and Information Engineering Institute, Naval University of Engineering, Wuhan 430033, China;;2. Naval Unit 91959 of the PLA, Sanya 572021, China;;3. Office of Research and Development, Naval Aeronautical and Astronautical University, Yantai 264001, China |
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| Abstract: | After the GPS signals reflected from the sea surface is analyzed, the effects on the correlation power of GPS C/A code caused by marine targets passing through the first Fresnel zone are studied. With this understanding, a passive detection of marine targets based on GPS signals reflected from the sea surface is presented. Ground experiments based on the method have been made with a GPS LHCP antenna and a software receiver. Results show that the correlation power of the reflected GPS C/A code varies obviously as the target passes through the first Fresnel zone, the variation can be measured by accumulation and average, and thus the target is detected. |
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