基于粗糙集的民航无线电干扰预测系统研究

发布时间：2018-07-24 13:01

【摘要】：民航无线电干扰是指民航通信导航监视系统在运行过程中因受民航系统内部或外部因素影响而出现工作质量下降的情况。随着无线电技术在社会各行业中广泛的应用,民航运行所面临的电磁环境日益复杂,无线电干扰成为了民航系统亟须解决的难题。为了提高民航无线电的抗干扰能力,减轻干扰造成的负面影响,本文研究和设计了民航无线电干扰预测系统。本文研究的主要问题是干扰预测方法的研究和干扰预测系统的设计。本文首先基于粗糙集理论分析民航无线电干扰报告数据,建立影响民航无线电干扰因素所处的状态与干扰之间的映射关系,并通过真实数据测试方法的性能;之后将反向传播(Back-Propagation,BP)神经网路与粗糙集理论相结合,利用粗糙集理论处理模糊数据的优势弥补神经网络处理此类数据时的不足来提高预测的准确性,并利用仿真实验测试预测方法的性能;最后,依据民航无线电干扰报告数据的特点与预测方法的需求来设计干扰预测系统,并进行相应的系统性能测试以验证其性能。本文研究的民航无线电干扰预测系统能够为民航无线电管理者采取相应抗干扰措施,提高民航无线电系统运行稳定性等工作提供支持。
[Abstract]:Civil aviation radio interference refers to the situation that the work quality of civil aviation communication navigation monitoring system decreases due to the influence of internal and external factors in the civil aviation system during its operation. With the wide application of radio technology in various sectors of society, the electromagnetic environment in which civil aviation operates is becoming more and more complex. Radio interference has become a difficult problem for civil aviation systems to solve. In order to improve the anti-jamming ability of civil aviation radio and reduce the negative influence caused by interference, this paper studies and designs the civil aviation radio interference prediction system. The main problem of this paper is the research of interference prediction method and the design of interference prediction system. Firstly, based on the rough set theory, the paper analyzes the civil aviation radio interference report data, establishes the mapping relationship between the state and the interference factors affecting the civil aviation radio interference factors, and tests the performance of the method through the real data. Then combining Back-Propagation BP neural network with rough set theory, the advantage of rough set theory to deal with fuzzy data is used to make up for the deficiency of neural network in processing such data to improve the accuracy of prediction. Finally, according to the characteristics of the civil aviation radio interference report data and the demand of the prediction method, the interference prediction system is designed, and the corresponding system performance test is carried out to verify its performance. The civil aviation radio interference prediction system studied in this paper can provide support for civil aviation radio managers to take corresponding anti-interference measures and improve the operational stability of civil aviation radio systems.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：V351.36;TN972;TP18

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