| 一种无源双基地雷达直达波恢复方法研究 |
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| 引用本文： | 王峰,蒋德富,李东新. 一种无源双基地雷达直达波恢复方法研究[J]. 现代雷达, 2016, 0(7): 17-20 |
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| 作者姓名： | 王峰 蒋德富 李东新 |
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| 作者单位： | 河海大学 计算机与信息学院 阵列与信息处理实验室;河海大学 计算机与信息学院 阵列与信息处理实验室;河海大学 计算机与信息学院 阵列与信息处理实验室 |
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| 基金项目： | 江苏省自然科学基金资助项目；中央高校基本科研业务费专项资助项目 |
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| 摘 要： | 在山地及城市附近的应用中，严重的多径杂波造成基于调频广播的无源双基地雷达直达波信号恢复困难。文中提出了采用基于空间分集的常数模盲均衡算法，利用空间分集的多通道，实现信号衰落的补偿，而利用常数模盲均衡算法，实现恒模的调频广播信号的反卷积运算，从而完成了对多径的抑制，获得高质量的直达波信号。计算机仿真表明：与无分集的常数模盲均衡算法相比，所提算法获得了更好的目标检测性能。
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| 关 键 词： | 无源双基地雷达；常数模算法；直达波信号恢复；多径杂波对消；空间分集均衡器 |
A Study on Direct Signal Recovery for Passive Bistatic Radar |
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| WANG Feng,JIANG Defu and LI Dongxin. A Study on Direct Signal Recovery for Passive Bistatic Radar[J]. Modern Radar, 2016, 0(7): 17-20 |
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| Authors: | WANG Feng JIANG Defu LI Dongxin |
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| Affiliation: | Array and Information Processing Laboratory, College of Computer and Information, Hohai University;Array and Information Processing Laboratory, College of Computer and Information, Hohai University;Array and Information Processing Laboratory, College of Computer and Information, Hohai University |
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| Abstract: | It is a tough task for the passive bistatic radar to recover the direct signal from severe multipath clutters in hilly or urban areas. Constant modulus algorithm (CMA) based on space diversity is proposed to accomplish the recovery of the direct signal under such circumstances. Fading effect is avoided by the non-coherent feature of the multichannel signals, and the suppression of the multipath reflections is carried out by the blind deconvolution operation of the CMA. Computer simulations show that the proposed algorithm has achieved better performance in comparison with the conventional CMA algorithm. |
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| Keywords: | passive bistatic radar constant modulus algorithm direct signal recovery multipath clutter cancellation space diversity equalizer |
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