| 基于分数阶傅里叶变换的双基地雷达线性调频信号的参数联合估计新方法 |
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| 引用本文： | 李丽,邱天爽.基于分数阶傅里叶变换的双基地雷达线性调频信号的参数联合估计新方法[J].电子与信息学报,2012(4):878-884. |
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| 作者姓名： | 李丽 邱天爽 |
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| 作者单位： | 大连理工大学电子信息与电气工程学部大连116024大连大学信息工程学院大连116622 |
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| 基金项目： | 国家自然科学基金(60872122)资助课题 |
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| 摘 要： | 该文提出一种双基地MIMO雷达线性调频(LFM)信号参数的联合估计新方法。在所提出的新的双基地MIMO雷达的信号模型基础上,利用分数阶傅里叶变换对线性调频(LFM)信号的能量聚集特性进行提取,根据分数阶傅里叶变换域内的峰值点对多普勒频移尺度和时延进行估计,并采用FRFT-MUSIC算法实现了线性调频(LFM)信号收发角的联合估计,实现了收发角的自动配对。仿真实验验证了算法的有效性。
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| 关 键 词： | 双基地MIMO雷达 线性调频信号 分数阶傅里叶变换 参数估计 FRFT-MUSIC算法 |
A Novel Method for Joint Parameter Estimation of LFM Signals in Bistatic MIMO Radar System Based on FRFT |
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| Li Li①② Qiu Tian-shuang.A Novel Method for Joint Parameter Estimation of LFM Signals in Bistatic MIMO Radar System Based on FRFT[J].Journal of Electronics & Information Technology,2012(4):878-884. |
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| Authors: | Li Li①② Qiu Tian-shuang |
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| Affiliation: | Li Li①② Qiu Tian-shuang① ①(Faculty of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian 116024,China) ②(Information Engineering College,Dalian University,Dalian 116622,China) |
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| Abstract: | This paper presents a novel method for joint parameter estimation of Linear Frequency Modulation (LFM) signals in bistatic Multiple-Input Multiple-Output(MIMO) radar system.A new signal array model of bistatic MIMO radar system is constructed in this paper.Firstly,each LFM signal is extracted according to the characteristic energy concentration in FRactional Fourier Transform(FRFT) domain.Secondly,the Doppler frequency shift scale and time delay are estimated by searching peak point in the FRFT domain.Furthermore, both Direction Of Departures(DODs) and Direction Of Arrivals(DOAs) of the multiple targets are estimated and paired automatically by employing the FRFT-MUSIC algorithm.Simulation results are presented to verify the effectiveness of the proposed method. |
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| Keywords: | Bistatic MIMO radar Linear Frequency Modulation(LFM) signal FRactional Fourier Transform (FRFT) Parameter estimation FRFT-MUSIC algorithm |
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