QAM-OFDM调制的雷达通信一体化系统性能分析  

Performance analysis of radar communication integration system based on QAM-OFDM modulation

作　　者：杨勇军 梅进杰[1] 胡登鹏[1] 雷云龙 YANG Yongjun, MEI Jinjie, HU Dengpeng, LEI Yunlong(Air Force Early Warning Academy, Wuhan 430019, Chin)

机构地区：[1]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2018年第2期95-99,113,共6页Journal of Air Force Early Warning Academy

摘　　要：为了提高雷达通信一体化系统的通信速率,提出了基于正交幅度调制-正交频分复用调制的雷达通信一体化共享信号形式.首先推导了一体化信号模糊函数,并与Barker编码的正交频分复用调制雷达信号模糊函数进行对比,分析了一体化信号的时延与多普勒分辨力;然后采用限幅法对一体化信号峰均功率比进行抑制,并分析其误码性能;最后给出了仿真验证.仿真结果表明,采用该信号仍然能达到雷达系统探测目标的要求,并且能有效提高通信速率,适用于雷达通信一体化系统.In order to improve the communication rate of radar communication integration system, this paper proposes a radar and communication integration signal sharing form based on quadrature amplitude modulation and orthogonal frequency division multiplexing modulation. Firstly the paper deduces the integration signal ambi- guity function and makes a comparison with ambiguity function of Baker-coded orthogonal frequency division multiplexing radar signal, and analyzes the signal delay and Doppler resolution. And then the paper uses clipping method to suppress the integrated signal＇ s peak to average power ratio （PAPR） and analyze its error performance. Finally verification is made through simulation. The result shows that adopting this shared signal still meets the re- quirements of radar system detecting targets, and is in the position to effectively improve communication rate of radar communication integration; it is suitable for radar communication integration system.

关 键 词：雷达通信一体化 通信性能 正交幅度调制 宽带模糊函数 限幅法 

分 类 号：TN957[电子电信—信号与信息处理]