一种单脉冲雷达多通道L1正则化波束锐化方法  

A New Mono-pulse Radar Beam Sharpening Method with Multichannel L1 Regularization

作　　者：唐琳[1] 焦淑红[1] 齐欢[1] 吴如煊 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001 [2]北京宇航系统工程研究所,北京100076

出　　处：《电子与信息学报》2014年第9期2201-2206,共6页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61201410)资助课题

摘　　要：该文针对单脉冲雷达波束锐化问题,提出一种多通道L1正则化波束锐化方法。首先根据最大后验概率准则推导了适合于单脉冲雷达波束锐化的多通道L1正则化模型,然后提出一种扩展的迭代收缩阈值算法来解决多通道L1正则化问题。理论分析和仿真实验表明,该方法在保证波束锐化性能的同时提高了抑制噪声的能力,有效地解决了单脉冲雷达中各通道方向图不满足强互质条件带来的噪声泄漏问题。其性能要明显优于现有的单脉冲雷达波束锐化方法。This paper proposes a new mono-pulse radar beam sharpening method with multichannel L1 regularization. First, a multi-channel L1 regularization model is derived for mono-pulse radar beam sharpening based on the maximum a posteriori probability criterion. Then, an extended iterative shrinkage threshold algorithm is proposed to solve the multi-channel L1 regularization problem. Theoretical analysis and simulation results show that this new method can ensure beam sharpening performance and improve the ability to suppress noise, and it can efficiently solve the noise leaks problem caused by channel＇s pattern, which does not meet the strong prime conditions in mono-pulse radar. The performance of the proposed algrithem is significantly better than the existing mono-pulse beam sharpening methods.

关 键 词：单脉冲雷达 前视成像 波束锐化 反解卷积 L1正则化 

分 类 号：TN958.4[电子电信—信号与信息处理]