论文部分内容阅读
仪表着陆系统(ILS)是一种广泛安装于机场、便于实施精密进近的终端区导航系统,它不仅能提供精确的水平引导,还能提供垂直引导,能使航空器在低能见度下安全着陆。由于全球民航统一实施基于性能的导航(PBN)的运行方式的要求,针对没有垂直引导的非精密进近,提出利用气压高度系统或星基增强系统(SBAS)实现垂直引导的类精密进近(APV)。我国由于北斗系统尚未建成,未采用导航性能较高的基于SBAS的RNP APCH进近程序,而是采用机载增强系统(ABAS)提供水平引导、气压高度系统提供垂直引导的RNP APCH进近程序。本文从ILS进近与两种RNP APCH进近的基本原理和方法出发,研究了二者在程序设计和运行上的差异,分析RNP APCH的优势和前景。
The ILS is a terminal area navigation system that is widely installed at the airport to facilitate precision approach. It not only provides accurate horizontal guidance, but also provides vertical guidance to enable the aircraft to land safely with low visibility. Due to the unification of global civil aviation implementation of performance-based navigation (PBN) operation requirements, for the non-precision approach without vertical guidance, proposed vertical alignment guided precision-type approach using barometric altitude system or satellite based augmentation system (SBAS) APV). Because the BeiDou system has not been built in our country, the SBAS-based RNP APCH approach procedure with high navigation performance is not adopted. Instead, the ABAS is used to provide horizontal guidance and the altitude-based system provides the vertical guidance RNP APCH approach procedure. Based on the basic principles and methods of ILS approach and two RNP APCH approaches, this paper studies the differences between the two in program design and operation and analyzes the advantages and prospects of RNP APCH.