仪表着陆系统(ILS)即盲降,是应用最为广泛的飞机精密进近和着陆引导系统。它的作用是由地面设备发射的两束无线电信号实现航向道和下滑道指引,建立一条由跑道指向空中的虚拟路径,使飞机沿该路径安全平稳降落,最终实现安全着陆。通常由一个航向信标台、一个下滑信标台和几个指点标组成。 Instrument landing system (ILS) that is blind, is the most widely used aircraft precision approach and landing guidance system. Its role is to guide the course and glideslope by two beams of radio signals emitted by the ground equipment and establish a virtual path directed by the runway to the sky so that the aircraft can land safely and smoothly along the path and finally achieve a safe landing. Usually consists of a heading beacon, a gliding beacon and several pointing markers.