基于双贪婪算法的捷变频雷达海杂波抑制技术研究  

Research on Sea Clutter Suppression Technology of Agile Frequency Conversion Radar Based on Double Greedy Algorithm

作　　者：李奇锦 张宁 LI Qijin;ZHANG Ning(The 724th Research Institute of China State Shipbuilding Corporation,Nanjing 211100,China)

机构地区：[1]中国船舶集团有限公司第七二四研究所,江苏南京211100

出　　处：《电声技术》2023年第12期30-33,共4页Audio Engineering

摘　　要：针对海杂波环境下捷变频雷达回波信号难以有效提取出目标信号并获取目标运动参数的问题,采用双贪婪算法对捷变频体制雷达的回波信号进行处理。通过牛顿正交匹配追踪(Newton Orthogonal Matching Pursuit,NOMP)算法对捷变频目标进行初始目标提取,在提取到目标信号后,基于矩阵填充思想采用最小秩近似的原子分解(Atomic Decomposition for Minimum Rank Approximation,ADMiRA)进行低秩矩阵算法优化,以此为主体框架进行迭代优化。通过球不变随机过程法产生相干K分布杂波进行仿真实验,验证了双贪婪算法具有良好的抗杂波性能,能够在杂波情况下较好地提取出目标信息。Aiming at the problem that it is difficult to effectively extract the target signal and obtain the target motion parameters from the echo signal of frequency agile radar in the sea clutter environment,the double greedy algorithm is used to process the echo signal of frequency agile radar.Newton Orthogonal Matching Pursuit(NOMP) algorithm is used to extract the initial target of the frequency agile target.After the target signal is extracted,the Atomic Decomposition for Minimum Rank Approximation(ADMiRA) is used to optimize the low-rank matrix algorithm based on the idea of matrix filling,and the iterative optimization is carried out as the main framework.The simulation results show that the double greedy algorithm has good anti-clutter performance and can extract the target information well in the case of clutter.

关 键 词：捷变频 压缩感知 抗杂波 贪婪算法 矩阵填充 

分 类 号：TN958.6[电子电信—信号与信息处理]