数字航空通信系统中DME干扰信号抑制技术研究  

Study on DME Anti-interference Methods of Digital Aeronautical Communication System

作　　者：李琦[1] 李宏伟[1] 蔡斌[1] 张建忠[2] 

机构地区：[1]空军工程大学信息与导航学院 [2]中国人民解放军94159部队99分队

出　　处：《科学技术与工程》2013年第8期2097-2102,共6页Science Technology and Engineering

基　　金：航空基金(20112096016)课题资助

摘　　要：研究了L波段中常见的测距器(Distance Measure Equipment,DME)信号,为了抑制该信号,提高L波段数字航空通信系统1型(L-DACS1)的抗干扰性能。提出了通过对超出特定门限的接收信号乘以相应的衰减因子的方法,达到抑制干扰的目的;同时也能够提高系统的输出信噪比。最后通过仿真验证了该算法可以有效地提高L-DACS1的抗干扰性能。Distance Measure Equipment （DME） signals in L band is studied. In order to eliminate that sig- nals, improve the anti-interference ability of L-band Digital Aeronautical Communication System Type 1, the novel method is proposed, in which corresponding attenuation factor is multiplied when received signal exceed the particular threshold. The method improves the system＇s output signal noise ratio. Finally, the simulation results show that the algorithm could effectively improve the L-DACS1 the anti-interference performance.

关 键 词：L波段数字航空通信系统 OFDM DME 抗干扰 

分 类 号：TN911.3[电子电信—通信与信息系统]