CUDA架构下外辐射源雷达杂波抑制并行算法  

Parallel clutter suppression algorithm for passive radar in CUDA

作　　者：武勇[1] 王俊[1] 张培川[1] 曹运合[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2015年第1期104-111,共8页Journal of Xidian University

基　　金：国家自然科学基金资助项目(61372136)

摘　　要：为了解决用于杂波抑制的直接矩阵求逆算法在外辐射源雷达工程应用中实时处理困难的问题,提出了分段并行的直接矩阵求逆算法.充分考虑了直接矩阵求逆算法的特点,将整个运算块分解为多个规模相同的子运算块,在计算统一设备架构下对这些子运算块进行并行处理,达到了提高算法处理效率的目的.实验结果表明,在采样率为200kHz,杂波对消阶数为128的条件下,与传统的串行处理算法相比,该算法的运行效率提高了25倍,并成功用于某外辐射源雷达实时信号处理中.In order to solve the problem that the direct matrix inverse （DMI） algorithm for clutter suppression can not be real-time processing in the passive radar engineering application, a segmented parallel DMI algorithm（called P-DMI） is proposed. By considering the feature of the DMI algorithm, the entire operation block is broken up into several identical sub-blocks, and in the Compute Unified Device Architecture, these sub-blocks are processed in parallel to achieve the purpose of improving the processing efficiency. Experimental results indicate that this algorithm＇s computation efficiency is raised more than 25 times compared with the traditional serial algorithm when the sampling rate is 200 kHz and the clutter cancelation order is equal to 128. Also, the method has been used in real-time signal processing for passive radar successfully.

关 键 词：外辐射源雷达 杂波抑制 直接矩阵求逆算法 计算统一设备架构 并行 

分 类 号：TN958[电子电信—信号与信息处理]