民用航空甚高频通信系统互调干扰分析与建模研究

本文分析了民航甚高频通信系统的干扰机制,建立干扰分析模型,对民航西安区管甚高频系统的实际干扰问题进行了分析,介绍了无线电频率管理的基本概念,讨论了电磁频谱的概念、特点,论述了电磁频谱检测分析和评估的重要性,并对国内外无线电频率管理的现状做了介绍,深入分析了互调干扰机理,总结了调频广播对民航甚高频系统干扰的类型和产生机制。最后,分别从频率和功率两个维度建立了互调干扰频率分析模型。为民航甚高频通信系统的规划和管理提出了有益的参考。

Analysis and Modeling for Intermodulation Interference in Civil Aviation VHF Communication System

This paper analyzes the interference mechanism of civil aviation VHF communications system and establishes a reasonable interference analysis model. The actual interference problems in VHF systems of civil aviation in Xi＇an DMC are analyzed by using the proposed model. Firstly, the basic concept of radio frequency management is introduced, the concept of the electromagnetic spectrum and its characteristics are discussed, and the importance of the electromagnetic spectrum detection analysis and evaluation are discussed. Then the state-of-the-art technology of radio frequency management is introduced, the in-depth analysis of inter-modulation interference mechanism is conducted, the type and the generation mechanisms of the interference between civil aviation VHF system and FM broadcasting system are summarized. Finally, the intermodulation interference frequency analysis model is established from the two dimensions of frequency and power respectively, which can provide useful references for civil aviation planning and management of VHF communications system.