一种最优距离旁瓣赋形滤波器设计  

Design of optimal range sidelobe shaping filters

作　　者：周毅 ZHOU Yi(Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《空军预警学院学报》2021年第2期102-105,共4页Journal of Air Force Early Warning Academy

摘　　要：针对雷达多目标分辨和抗干扰等应用场景中,特定范围内的距离旁瓣特性相比于综合距离旁瓣特性影响更大的情况,提出一种最优距离旁瓣赋形滤波器设计方法.该设计方法把旁瓣抑制过程建模为具有附加约束的线性约束最小方差(LCMV)滤波过程,充分利用滤波器阶数的自由度对特定距离范围施加特定旁瓣电平约束,可实现累积旁瓣电平(ISL)最小意义下的最优距离旁瓣赋形滤波器,进一步通过非线性最优化方法可获得最优滤波器系数.仿真结果验证了该方法的有效性.Aiming at the situation that the range sidelobe characteristics in a specific range have greater influence than the overall range sidelobe characteristics in the application scenarios of radar multi-target resolution,anti-jamming,etc.,this paper proposes a designing method for optimal range sidelobe shaping filters.In the proposed method,the sidelobe suppression process is modeled as a linear constrained minimal variance(LCMV)filtering process with additional constraints.The optimal range sidelobe shaping filters with integrated sidelobe level(ISL)can be realized by making full use of the freedom degree of the filter order to impose specific sidelobe level constraints on a specific range,and the optimal filter coefficients can be obtained by further using nonlinear optimization method.Simulation results verify the effectiveness of the proposed method.

关 键 词：旁瓣赋形 脉冲压缩 超低旁瓣 非线性规划 

分 类 号：TN957[电子电信—信号与信息处理]