| Costas编码跳频宽带雷达信号测速技术研究 |
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| 引用本文： | 魏玺章,刘振,邓斌,黎湘.Costas编码跳频宽带雷达信号测速技术研究[J].电子学报,2010,38(10):2426-2429. |
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| 作者姓名： | 魏玺章 刘振 邓斌 黎湘 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院空间电子信息技术研究所; |
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| 摘 要： | 频率步进雷达固有的时延－多普勒耦合现象严重影响了运动目标的距离－速度二维联合分辨率.使用具有近似"图钉型"模糊图的跳频脉冲串信号可以消除时延－多普勒耦合,从而同时获得距离和速度的高分辨特性.本文首次推导了跳频脉冲串信号统一形式的模糊函数,分析了编码跳频信号的模糊性和分辨特性,并针对宽带信号下的高速目标提出了一种新的Costas编码跳频信号STRETCH处理方法,有效抑制了传统方法的高旁瓣问题.仿真实验表明Costas编码跳频信号具有较好的测速以及高分辨距离成像性能.
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| 关 键 词： | 雷达 宽带 测速 模糊函数 Costas编码 |
| 收稿时间： | 2008-07-07 |
Research on Velocity Measurement of Wideband Costas-Coded Stepped-Frequency Radar Signal |
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| WEI Xi-zhang,LIU Zhen,DENG Bin,LI Xiang.Research on Velocity Measurement of Wideband Costas-Coded Stepped-Frequency Radar Signal[J].Acta Electronica Sinica,2010,38(10):2426-2429. |
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| Authors: | WEI Xi-zhang LIU Zhen DENG Bin LI Xiang |
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| Affiliation: | WEI Xi-zhang,LIU Zhen,DENG Bin,LI Xiang(School of Electronic Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China) |
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| Abstract: | The inherent delay-Doppler coupling of stepped-frequency radar has a severe impact on the united resolution of range and velocity.In order to achieve high resolution ability of range and velocity simultaneously,jumped-frequency radar signal which has thumbtack-shaped ambiguity function is used to resolve the delay-Doppler coupling.In this paper the uniform ambiguity function of jumped-frequency radar signal is deduced for the first time,and then the ambiguity and resolution characteristics of coded-frequenc... |
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| Keywords: | radar wideband velocity measurement ambiguity function Costas-coded |
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