基于OFDM-LFM的雷达通信一体化波形设计  

Integrated radar and communication waveform design based on OFDM-LFM

作　　者：赵忠凯[1] 石妙 ZHAO Zhongkai;SHI Miao(College of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2021年第3期73-77,共5页Applied Science and Technology

摘　　要：为解决现代电子战中设备体积庞大、系统复杂和电磁干扰严重的问题,现有学者提出了雷达通信一体化系统,其中的重点是雷达通信一体化波形设计。本文在正交频分复用—线性调频(OFDM-LFM)雷达的基础上,分别对BPSK、MSK、16QAM这3种较为常见的通信调制方式进行分析,并以此设计一体化波形,从而在不影响雷达基本性能的情况下实现通信信息的传输。对设计的3种一体化波形的性能进行比较分析和仿真验证,在通信性能方面,基于OFDM的BPSKLFM和MSK-LFM信号波形的误码率最低;在雷达性能方面,基于OFDM的16QAM-LFM信号波形的模糊函数接近图钉形状,具有较高的范围和较快的分辨率。In modern electronic warfare,the integrated radar and communication waveform can address the problems of large volume of equipment,complex system,and serious electromagnetic interference.In this paper,we design an integrated radar and communication waveform based on Orthogonal Frequency Division Multiplexing(OFDM)Linear Frequency Modulation(LFM)radar signal,adopting three commonly used communication modulation methods of Binary Phase Shift Keying(BPSK),Minimum Shift Keying(MSK)and 16 Quadrature Amplitude Modulation(QAM),so as to realize the transmission of communication information without affecting the basic performance of radar.Performance analysis and simulation experiments on the designed integrated waveform show that the bit error rate of the BPSK-LFM based on OFDM signal waveform is lowest among the three signals.In terms of radar performance,the radar ambiguity function of 16QAM-LFM based on OFDM signal is close to a pushpin shape,which has a high range and speedy resolution.

关 键 词：雷达通信一体化 正交频分复用 线性调频信号 模糊函数 误码率 BPSK调制 MSK调制 16QAM调制 

分 类 号：TN957[电子电信—信号与信息处理]