| 调频脉冲信号辐射源多普勒信息提取方法研究 |
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| 引用本文： | 魏星,万建伟,皇甫堪.调频脉冲信号辐射源多普勒信息提取方法研究[J].国防科技大学学报,2007,29(4):95-99. |
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| 作者姓名： | 魏星 万建伟 皇甫堪 |
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| 作者单位： | 国防科技大学,电子科学与工程学院,湖南,长沙,410073 |
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| 基金项目： | 国家部委基金资助项目(51421030505KG0172) |
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| 摘 要： | 提出了一种基于单脉冲频率及频率变化率联合估计和多脉冲联合估计脉冲重复周期变化率的调频脉冲信号辐射源目标多普勒参数提取方法。该方法解决了无源定位系统数据采样频率与辐射源脉冲重复周期不匹配造成的频率偏差问题,在脉冲到达时间的提取上避免了对脉冲边沿的判断,使得利用中频采样信号计算脉冲重复周期成为可能。介绍对了该方法所采用的频率及频率变化率联合估计关键技术,并在此基础上讨论了该方法所能达到的理论估计精度及误差分析,最后通过仿真试验验证了该方法的可行性和有效性。
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| 关 键 词： | 无源定位 多普勒信息提取 调频脉冲信号 频率及频率变化率联合估计 |
| 文章编号： | 1001-2486(2007)04-0095-05 |
| 收稿时间： | 2006/11/1 0:00:00 |
| 修稿时间： | 2006年11月1日 |
Research on Doppler Estimation Method of FM Emitter |
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| WEI Xing,WAN Jianwei and HUANGFU Kan.Research on Doppler Estimation Method of FM Emitter[J].Journal of National University of Defense Technology,2007,29(4):95-99. |
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| Authors: | WEI Xing WAN Jianwei and HUANGFU Kan |
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| Institution: | College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | A new Doppler Estimation Method based on frequency and frequency rate estimation and pulse period estimation is proposed.The new method is intended for solving the unmatched sampling problems and obviating the judgments of pulse edge,which permits the pulse period estimation based on intermediate frequency sampling signals.The frequency and frequency rate estimation technique was introduced,and based on that,the theoretic precision and error origins are discussed.The feasibility and availability of the new method were proved by the simulations. |
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| Keywords: | passive localization Doppler estimation frequency modulation pulse frequency and frequency rate estimation |
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