基于软件无线电的甚高频数据链模式4收发机设计  

Designon VHF data link mode 4 transceiver based on software defined radio

作　　者：罗攀 孙毅刚[1] Luo Pan;Sun Yigang(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学航空工程学院,天津300300

出　　处：《国外电子测量技术》2020年第5期49-54,共6页Foreign Electronic Measurement Technology

基　　金：国家自然科学基金委员会-中国民航局民航联合研究基金(U1533201)项目资助。

摘　　要：针对民用航空甚高频数据链物理层通信技术,基于无线电射频前端HackRF One和软件GNU Radio搭建低成本可重构的软件定义无线电仿真平台,在编程环境中设计民用飞机甚高频数据链模式4(VDL M4)数字信号收发机,完成了文本传输功能。阐述了高斯频移键控(GFSK)调制解调等通信模块的实现方案,并针对GNURadio存在的信号同步问题,设计了改进的码元同步模块。实验对系统通信性能进行测试,结果显示改进后能够有效降低误码率。实验证明该VDL M4收发机满足国际民航组织文件规定的设计要求,可以较好地传输文本数据。Aiming at the physical layer communication technology of civil aviation VHF data link,a low-cost reconfigurable software radio simulation platform is builtbased on the radio frequency front-end HackRF One and software GNU Radio.A civil aircraft VHF data link mode 4(VDL M4)transceiver is designed,and thetext transmission for digital signalsis implemented in the programming environment.The implementation scheme of communication modules such as GFSK modulation and demodulation is expounded,and a new symbol synchronization module is designed according to the signal synchronization problem existing in GNURadio.The experiment tests the communication performance of the system,and the results show that the improvement can effectively reduce the bit error rate.Experiments show that the VDL M4 transceiver meets the design requirements specified by ICAO documents and can transmit text databetter.

关 键 词：甚高频数据链模式4 软件无线电 GFSK调制解调 码元同步 GNU Radio 

分 类 号：TN80[电子电信—信息与通信工程]