基于机会阵投影面的低截获概率雷达目标搜索设计  

Design of target searching with low probability of interception radar based on opportunity array projection plane

作　　者：黄晓彦 汪飞[1] 时晨光 周建江[1] Huang Xiaoyan;Wang Fei;Shi Chenguang;Zhou Jianjiang(Key Laboratory of Radar Imaging and Microwave Photonics,Ministry of Education,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学雷达成像与微波光子教育部重点实验室,南京210016

出　　处：《战术导弹技术》2022年第5期24-30,共7页Tactical Missile Technology

基　　金：国家自然科学基金(61801212);江苏省自然科学基金(BK20180423)。

摘　　要：针对进一步降低机载机会阵雷达的截获概率问题,采用机会阵投影面作为雷达天线孔径,相控阵-多输入多输出(MIMO)体制作为雷达工作模式,设计了机会阵投影面雷达的子阵划分形式,建立了以峰值功率、脉冲宽度、搜索帧周期、子阵数目和脉冲积累数作为优化参数的低截获概率雷达约束优化模型;在满足一定检测概率和时间约束条件下,以最小化雷达信号的被截获概率为目标函数,采用遗传算法对模型参数进行了优化求解。仿真结果表明,参数优化后的模型可以在满足目标检测的性能下进一步提高机会阵投影面雷达的低截获性能。To further reduce the probability of interception of airborne opportunity array radar, subarray partition methods of the opportunity array projection plane radar are designed by using the opportunity array projection plane as the aperture of the radar antenna and the phased array-MIMO system as the working mode of the radar. A constraint optimization model of the low probability of interception of radar is established with peak power, pulse width, search frame period, number of subarrays and pulse accumulation as optimization parameters. Under the certain detection probability and time constraints, the objective function is to minimize the probability of interception of radar signal, and the model parameters are optimized by using genetic algorithm. The simulation results show that the optimized model can further improve the low interception performance of the opportunity array projection plane radar while satisfying the target detection performance.

关 键 词：低截获概率 机会阵 投影面 相控阵-MIMO雷达 目标搜索 检测概率 遗传算法 

分 类 号：TN951[电子电信—信号与信息处理]