This paper briefly introduces the function requirements for autonomous approach and landing, and presents a hierarchical autonomous and intelligent control systems.
从无人机自主进场着陆的功能需求分析出发,探讨了无人机自主进场着陆控制系统的智能递阶控制结构的组成,并对系统的各关键功能模块进行了较详细的分析,提出了精确4D航迹规划及跟踪控制的一种新方法。
AILAS (Automatic Instrument Landing Approach System)
自动仪表着陆进场系统
The bag carries the data transfer cartridge, which contains the mission information and landing approach plates.
这个包里装着数据转换卡，里面包含有任务资料和着陆进场资料板。
instrument landing system approach
用仪表着陆系统进场着陆
precision minimum altitude
用精密进场雷达进场着陆的最低高度
instrument guidance system approach
用仪表驾驶系统进场着陆
REGAL (Range Elevation Guidance for Approach and Landing)
进场和着陆的距离仰角导航
triplex autolanding
三重操纵系统自动进场着陆
radio approach aid
进场着陆无线电导航设备
precautionary emergency approach procedure
预防性紧急进场着陆程序
duplex autolanding
双重操纵系统自动进场着陆
final part of an aircraft's flight before landing
进场（飞机着陆前的最后飞行阶段）
To land an aircraft on its underside without aid of landing gear.
机腹着陆不用着陆档而以机腹进行着陆
radio or radar navigational apparatus (incl. that for blind approach landings and airport traffic control)
无线电或雷达导航设备（包括盲目进场着陆和机场交通管制用）
Thunderstorm is usually temporary, so the flight can also wait until the thunderstorm is gone.
由于雷雨通常为阵雨，所以也可以在空中等待，雷雨过后，再进场着陆。
The pilot made a spiral around the airport before landing.
飞行员绕着机场盘旋之后才着陆。
The plane touched down at the airport at 7:30.
飞机于七点三十分在机场着陆。
Tom landed the plane safely in the field.
汤姆把飞机安全地降落在着陆场上。
On another occasion, he landed in a deserted car park.
还有一次,他在一个废弃的停车场着陆。