ILS与RNP APCH进近运行差异研究

The Study on the Difference Between ILS and RNP APCH

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。

Insurance-linked securities （ILS） is a kind of instrument landing system widely installed in the airport terminal area, easy to implement precise approach of navigation system, it can not only provide accurate level guide, provides vertical guide, can make the aircraft landed safely under low visibility.As global civil aviation unified implementation based on the performance of the navigation （PBN） the requirements of the operation, for there is no vertical guide the precision approach, put forward using the barometric altitude system or star ground enhancement system （SBAS） for a vertical guide class precision approach （APV）.Because the beidou system has not yet been built in our country, not using the navigation performance of high based on SBAS RNP APCH approach procedure, but by airborne enhanced system （ABAS） provides horizontal guide, barometric altitude system to provide the vertical guide RNP APCH approach procedure.Based on the basic principles and methods ofRNP APCH approach, this paper studies the differences between the two methods in programming and operation, and analyzes the advantages and prospects ofRNP APCH.