GDS-MIMO-OFDM雷达通信一体化波形设计  

Design of Integrated Radar-communication Waveform Based on GDS-MIMO-OFDM

作　　者：赵忠凯[1] 闫秋贞 ZHAO Zhongkai;YAN Qiuzhen(Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学,黑龙江哈尔滨150001

出　　处：《舰船电子对抗》2024年第1期1-8,71,共9页Shipboard Electronic Countermeasure

基　　金：中央高校基本科研业务费专项资金资助项目,项目编号:3072022CF0802。

摘　　要：针对正交频分复用(OFDM)雷达通信一体化波形存在的通信速率较低、自相关旁瓣较高的问题,提出了一种基于Gold码扩频的多输入多输出-正交频分复用(MIMO-OFDM)雷达通信一体化波形。将MIMO-OFDM与扩频序列相结合,利用相关性较好的Gold码对通信信息进行扩频,再与OFDM脉冲符号进行调制,进而设计出一种既能提高通信速率又能改善雷达性能的一体化波形。仿真实验证明,较相同仿真条件下的Gold-OFDM、脉冲压缩-正交频分复用(PC-OFDM)一体化波形而言,所设计的一体化波形的通信速率能够倍数提高且可以在不影响通信性能的前提下降低信号模糊函数的旁瓣,从而改善一体化系统的雷达性能。The intergrated radar-communication waveform of orthogonal frequency division multiplexing(OFDM)radar has low communication rate and high autocorrelation sidelobe.To solve these problems,this paper proposes an integrated radar-communication waveform of multiple input multiple output(MIMO)-OFDM based on Gold code spread spectrum.By combining MIMO-OFDM with spread spectrum sequence,the spectrum of communication information is spread by Gold code with good correlation,and then it is modulated with OFDM pulse symbol,thereby an integrated wave is designed which can improve both communication rate and radar performance.The simulation experiment proves that,compared with the Gold-OFDM and pulse compression(PC)-OFDM integrated waveform under the same simulation conditions,the communication rate of the integrated waveform designed in this paper can increase multiple times and the sidelobe of the ambiguity function(AF)of the signal can be reduced without affecting the communication performance,so as to improve the radar performance of the integrated system.

关 键 词：雷达通信一体化 多输入多输出-正交频分复用雷达 模糊函数 扩频 

分 类 号：TN95[电子电信—信号与信息处理] TN92[电子电信—信息与通信工程]