UAT2数据链发射机编码及调制技术  

The Encoding and Modulation Techniques of UAT2 Data Link Transmitter

作　　者：文旌宇 汤新民 冯文源 管祥民[4] WEN Jingyu;TANG Xinmin;FENG Wenyuan;GUAN Xiangmin(College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 210016 China;Key Laboratory of Technology and Equipment of Tianjin Urban Air Transportation System,Civil Aviation University of China,Tianjin 300300 China;School of Transportation Science and Engineering,Civil Aviation University of China,Tianjin 300300 China;Key Laboratory of Civil Aviation General Aviation Operation,Civil Aviation Management Institute of China,Beijing 100102 China)

机构地区：[1]南京航空航天大学民航学院,江苏南京210016 [2]中国民航大学天津市城市空中交通系统技术与装备重点实验室,天津300300 [3]中国民航大学交通科学与工程学院,天津300300 [4]中国民航管理干部学院民航通用航空运行重点实验室,北京100102

出　　处：《西华大学学报（自然科学版）》2024年第6期53-62,共10页Journal of Xihua University:Natural Science Edition

基　　金：国家自然科学基金(52072174);高端外国专家引进计划(G2023202003L)。

摘　　要：为应对低空空域飞行器数量的增加及航空产业对未来城市空中交通(UAM)飞行器的监视跟踪需求,文章对UAT2数据链发射机的编码与调制技术进行研究:搭建UAT2数据链发射机系统结构,针对UAM飞行器监视需求,提出可寻址数据上行链路通信编码及飞行器健康状况监测下行链路编码规则算法,旨在全面覆盖UAM的安全运行需求;开发一种UAT2报文的轻量高速化RS编码算法,以减少执行时间和内存占用;基于直接数字频率合成DDS技术,实现连续相位频移键控CPFSK调制,符合UAT2数据链信号要求,确保了频谱能量的集中分布。关键编码和调制技术经过测试分析与性能评估,能够有效适用于UAT2数据链发射机。To address the increasing number of low-altitude aerial vehicles and meet the surveillance and tracking needs of the aviation industry for future urban air mobility(UAM)vehicles,an investigation about the encoding and modulation technologies of the UAT2 data link transmitter was conducted.The sys-tem structure of the UAT2 data link transmitter was designed.Aiming at the surveillance needs of UAM vehicles,an addressable data uplink communication encoding and a vehicle health status monitoring down-link encoding algorithm are proposed to cover the safety operation requirements of UAM.A high-speed reed solomon(RS)encoding algorithm for UAT2 messages was developed,which significantly reduced ex-ecution time and memory usage.CPFSK modulation was implemented based on direct digital synthesizer(DDS)technology.The signal requirements of the UAT2 data link were met and the spectral energy distri-bution was ensured to be concentrated.The encoding and modulation key technologies were tested and evaluated for performance.The results verified their effectiveness and applicability to the UAT2 data link transmitter.

关 键 词：UAT2数据链 信源编码规则算法 RS编码改进算法 直接数字频率合成 

分 类 号：TN919.3[电子电信—通信与信息系统]