基于PRI捷变的雷达通信一体化共享信号设计方法  

Signal design method for integrated radar and communication based on PRI agility

作　　者：刘智星 全英汇 肖国尧 邢孟道[2] LIU Zhixing;QUAN Yinghui;XIAO Guoyao;XING Mengdao(School of Electronic Engineering,Xidian University,Xi’an 710071,China;National Key Laboratory of Radar Signal Processing,Xidian University,Xi’an 710071,China)

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]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：《系统工程与电子技术》2021年第10期2836-2842,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金(61772397;61303035)资助课题。

摘　　要：雷达通信一体化能有效提高频谱利用率,减小电子设备体积,是多功能综合一体化电子系统的主要研究方向之一。本文在随机脉冲重复间隔(pulse repetition interval,PRI)雷达的基础上,提出一种新的基于PRI捷变的雷达通信一体化共享信号设计方法。通过改变发射信号的PRI,将通信信息嵌入到发射信号中,在雷达信号处理端,引入压缩感知理论来完成方位向相参积累,并实现对目标速度的超分辨估计;在通信信号处理端,通过检测脉冲的PRI来完成信息的解调。仿真试验表明,所提方法在保证雷达探测性能的前提下,可实现通信信息的稳定传输。Integrated radar and communication system can reduce the volume of electronic equipment and improve the spectral efficiency,which is one of the important research directions in multifunctional integration of electronic system.On the basis of random pulse repetition interval(PRI)agility radar,a novel signal design method for integrated radar and communication based on PRI agility is proposed.The communication information is embedded in the transmitting signal by changing the transmitting signal of PRI.At the radar receiver,compressed sensing theory is used to realize coherent integration and velocity super-resolution estimation of target.At the communication receiver,the communication information is demodulated by detecting PRI of pulse.The simulation results verify that the signal design method for integrated radar and communication can realize stable transmission of communication information on the premise of not affecting radar detection performance.

关 键 词：雷达通信一体化 信号共享 脉冲重复间隔捷变 压缩感知 速度超分辨 

分 类 号：TN958.6[电子电信—信号与信息处理]