民航地空数据链中D8PSK信号解调算法研究  

Research on the demodulation algorithm of D8PSK based on VDL M2

作　　者：林静[1] 曹力[1] 夏大旺 邓雪云[2] 袁树德[2] 

机构地区：[1]南京航空航天大学民航学院,南京211100 [2]上海飞机设计研究院,上海200232

出　　处：《信息技术》2015年第1期34-38,共5页Information Technology

基　　金：国家自然科学基金(61079003;61179066)

摘　　要：甚高频数据链模式2(VDL M2)是下一代民航地空数据链,已在国际民航领域得到应用,其物理层信号采用D8PSK调制模式。面对未来民机装备国产化的需要,地空数据链中D8PSK信号解调算法的研究势在必行。文中以国际民航组织(ICAO)发布的文件为依据,分析了D8PSK信号的特征,研究了信号的解调算法并进行了仿真实现。通过仿真模拟ICAO规定的噪声环境,对比不同解调方法的抗噪性能,明确适用于民航地空通信的D8PSK解调算法。VDL M2 is the next generation of civil aviation air-ground data link, and has been applied in the field of international civil aviation. The signal in the physical layer of VDL M2 is modulated with DSPSK scheme. With future requirements of aircraft equipments localization,it＇s necessary to promote the resaerch on the demodulation algorithm of D8PSK. In this paper, on the basis of the documents ICAO issued,the characteristics and demodulation technology of D8PSK signal in VDL M2 is discussed on. The demodulation technology is implemented the by simulating. By comparing the anti-noise performance of different modulation scheme in the noise environment defined by ICAO, it establishes the optimal demodulation technology of D8PSK signal in air-ground data link system.

关 键 词：VDL M2 D8PSK 相干解调 差分解调 抗噪性能 

分 类 号：TN911.2[电子电信—通信与信息系统]