民用航空甚高频通信系统互调干扰分析与建模研究

摘要

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。%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.