基于正交频率调制的雷达通信共享信号设计  

Design of Radar and Communication Shared Signal Based on Orthogonal Frequency Modulation

作　　者：张晓东 李凯 ZHANG Xiaodong;LI Kai(Chinese Flight Test Establishment,Xi'an 710089,China)

机构地区：[1]中国飞行试验研究院,西安710089

出　　处：《火力与指挥控制》2025年第2期48-54,共7页Fire Control & Command Control

基　　金：装备预研航空工业联合基金(6161B05110301);国防基础科研资助项目(JZTYS0305)。

摘　　要：为提高雷达通信共享信号的模糊函数性能和多普勒稳健性,设计一种基于正交频率调制的单载波、恒包络雷达通信共享信号。对信号相位进行调制,分为频率调制项与通信调制项;利用正交调制的思想,设计频率调制项的时频函数为正交频率调制项的线性组合;通过调制各正交频率调制项的系数实现通信调制;最后,利用三角函数的正交性确定了解调步骤。性能分析表明,所设计信号具有图钉状模糊函数、互模糊函数低、抗多普勒衰落等优势。仿真结果表明所设计的雷达通信共享信号,在高数据率通信时也具有较好的雷达探测性能,证明了所设计信号的有效性和可行性。To improve the ambiguity function performance and Doppler robustness of radar communication shared signal,a single carrier and constant envelope radar communication shared signal based on orthogonal frequency modulation is designed.Firstly,the signal phase is modulated,which is divided into frequency modulation term and communication modulation term;Secondly,the idea of orthogonal modulation is used,the time-frequency function of the frequency modulation term is designed as a linear combination of orthogonal frequency modulation terms;Then,communication modulation is achieved by modulating the coefficients of each orthogonal frequency modulation term;Finally,the orthogonality of trigonometric function is utilized to determine the demodulation steps.The performance analysis shows that the designed signal has such advantages as thumbtack fuzzy function,low cross-fuzzy function and resistance to Doppler fading,etc.The simulation results show that the designed radar communication shared signal also has better radar detection performance at high data rate communication,the effectiveness and the feasibility of the designed signal are proved.

关 键 词：雷达通信共享 频率调制 正交调制 模糊函数 误码率 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]