Cn频段卫星导航信号与微波着陆系统电磁兼容性仿真分析  

Simulation Analysis of Radio Frequency Compatibility Between Cn Band Satellite Navigation Signal and Microwave Landing System

作　　者：刘瑞华 李银[1] 邹玲 LIU Ruihua;LI Yin;ZOU Ling(College of Electronic Information and Automation,Civil Aviation University of China,Tianjin 300300,China;Key Laboratory of Civil Aircraft Airworthiness Technology,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学电子信息与自动化学院,天津300300 [2]中国民航大学民航航空器适航审定技术重点实验室,天津300300

出　　处：《信号处理》2022年第2期384-394,共11页Journal of Signal Processing

基　　金：国家重点研发计划(2016YFB0502402)。

摘　　要：为了实现Cn频段卫星导航的标准化应用,完成了Cn频段卫星导航信号与微波着陆系统(Microwave Landing System,MLS)信号的电磁兼容性评估。文章考察了单个可视Cn频段卫星导航空间站下行链路对MLS业务的射频干扰,计算了相应功率通量密度(Power Flux Density,PFD)值;基于谱分离系数和等效载噪比方法,仿真分析了微波着陆系统DPSK数据字信号以及扫描信号对Cn频段卫星导航信号的干扰结果,结合空间信号传播模型,给出了避免有害干扰的所需分离距离,对指导Cn频段卫星导航信号设计及地面站选址具有一定意义。In preparation for using Cn band as a new standard satellite navigation band,this paper presents the radio frequency compatibility analysis between Cn band Satellite Navigation signal and Microwave Landing System signal.Through the calculation of the Power Flux Density(PFD) values,the interference for Cn band satellite navigation downlink signal from single in-view space stations on MLS service is evaluated. Simulation analysis of the interference for MLS DPSK-data word signal and scanning signal on Cn band satellite navigation signal is based on the Spectral Separation Coefficient and equivalent Carrier-to-Noise Ratio methodologies. The required separation distances to avoid harmful interferences,on basis of the space propagation model of signals,are summarized. This study will certainly benefit the design of Cn band satellite navigation signal and guide the site selection of its earth stations.

关 键 词：Cn频段卫星导航 微波着陆系统 电磁兼容 功率通量密度 谱分离系数 等效载噪比 

分 类 号：TN927[电子电信—通信与信息系统]