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| The Application of a Novel Complementary Signal to High-frequency Ground Wave Radar |
| Li Chao Zhang Ning |
| Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin 150001, China |
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Abstract As the HF (High-Frequency) ground wave radar requires high duty-cycle, echo-eclipse becomes a serious problem for short-range target. Complementary signals with double-pulse has zeros sidelobes, but in the case of echo-eclipse, which has very high sidelobes for the reason of complementary feature is destructed. To solve this problem, this paper proposes a ‘sub-complementary’ signal, and by using modified Golay algorithm a novel complementary signal is got whose incomplete codes also has perfect pulse-compressed characteristic. Computer simulation and test show that this coding method has very low sidelobes in case of echo-eclipse, whose signal resolution is much higher than other codes.
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Received: 29 December 2010
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Corresponding Authors:
Li Chao
E-mail: lichao882003@yahoo.com.cn
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2011, Vol. 33 
