摘要
雷达通信一体化波形设计是近年来的研究热点。基于紧凑式阵列的一体化波形支持多方向目标探测和多用户通信,但面对主瓣内同方向不同距离的干扰和窃听行为时,存在抗主瓣干扰能力差、通信信息泄露等问题。因此,该文提出了一种基于分布式孔径的雷达通信一体化波形设计方法以操控波形在三维空间的分布。首先,根据近场信号传播模型建立波形合成约束,在指定位置合成所需的雷达和通信波形。然后,对各个子孔径增加恒模约束,构建以最小化发射功率为准则的一体化波形优化模型。由于模型的非凸性,采用交替投影算法进行迭代求解。仿真结果表明,该文所提方法在雷达目标和通信目标位置同时合成了期望波形,实现了三维空间波形操控。
Joint radar-communication waveform design has been the focus of intensive research in recent years.The integrated waveform based on a collocated antenna can simultaneously detect targets and communicate with multiple users in different directions.However,integrated waveforms possess poor anti-jamming properties and lack secure communication abilities,which limits their capacity to address the jamming and eavesdropping behaviors that generate at various ranges in the same beam direction.In this study,a novel joint radarcommunication waveform design method based on a distributed aperture is proposed to control waveform distributions in the three-dimensional space.First,the waveform synthesis constraint is established to synthesize the desired radar and communication waveforms in designated directions.Second,the constant modulus constraint is added to each sub-aperture,following which an integrated waveform optimization model is established based on the minimum transmission power.Finally,the alternating projection algorithm is used to iteratively solve the nonconvex optimization problem.Simulation results demonstrate that the proposed method synthesizes desired waveforms at target positions and realizes three-dimensional spatial waveform manipulation.
作者
刘柳
梁兴东
李焱磊
曾致远
唐海波
LIU Liu;LIANG Xingdong;LI Yanlei;ZENG Zhiyuan;TANG Haibo(National Key Laboratory of Microwave Imaging Technology,Aerospace Information Research Institute,Chinese Academy of Science,Beijing 100190,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《雷达学报（中英文）》
EI
CSCD
北大核心
2023年第2期297-311,共15页
Journal of Radars
基金
国家部委基金。
关键词
雷达通信一体化
分布式孔径
三维空间操控
波形合成
恒模约束
Joint radar-communication
Distributed aperture
Three-dimensional spatial manipulation
Waveform synthesis
Constant modulus constraint
