Journal of Systems Engineering and Electronics ›› 2011, Vol. 33 ›› Issue (5): 987-.doi: 10.3969/j.issn.1001-506X.2011.05.05

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Passive detection of marine targets based on GPS signals reflected from sea surface

MA Jian-guo1,2, CAO Ke-jing1, ZHANG Lei3, LI Bao1   

  1. 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
  • Online:2011-05-25 Published:2010-01-03

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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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