低空无线电高度表，一种测量飞机至地形的垂直距离的系统。
LOW RANGE RADIO ALTIMETER, a system that measures the vertical distance from the airplane to the terrain.
无线电高度表测量的是飞机离地面而不是离海平面的距离，用于自动导航及仪表着陆系统上。
Radio altimeters measure the distance of an aircraft above the ground rather than above sea level, they are used in automatic navigation and Blind-landing systems.
提出了弹上无线电高度表因外因导致高度指示异常时，使导弹具有一定的自适应能力，避免导弹飞行试验失败的改进方案。
The improving measures are proposed to make the missile possess a certain adaptive ability avoiding the failure of missile flight test when the missile borne radio altimeter is out of order.
从无线电高度表工作原理的分析与研究出发，提出了基于虚拟仪器技术和I/Q调制器的无线电高度表动态测试系统的总体设计，同时对测试数据的处理理论进行了一定的分析和研究。
This paper analyzes the working mechanism of aerodynamic missile-borne radio altimetre and puts forward a new design for the radio altimetre based on virtual instrument and I/Q modulator.
在驾驶舱内，飞行员在和巴西方面的空中交通管制部门交谈，报告航班高度和无线电频率。
In the cockpit, the pilots chattered with Brazilian air traffic control, calling out altitude and radio frequencies.
NTSB称，西北航空公司188航班的空客A320飞机正从圣地亚哥飞往明尼阿波利斯，于当地时间下午7时与航管失去无线电联络，当时飞机的飞行高度为37 000英尺。
The NTSB said Northwest flight 188, an Airbus A320, was flying from San Diego to Minneapolis and lost radio contact with controllers just before 7 pm local time when it was at 37, 000 feet.
无线电探空仪可以自由地上升到尽可能高的高度。
A radiosonde is free to rise to as great an elevation as possible.
在今年5月和本月初在加州举行的多项演示期间，无人机在不同高度飞行，链接分散在山区的手持式军用无线电设备。
During the multiservice demonstrations, held in California in May and this month, UAVs flew at a variety of altitudes while linking handheld military radios dispersed over mountainous regions.
信标引信以无线电指令引信技术为基础，采用无线数据通信的工作方式，实现最佳起爆高度控制。
Beacon fuze works in the way of wireless data communication, bases on the fuze technology of radio instruction, in order to realize the control of the optimal explosion height.
无线电射束也象探照灯的光束一样，是不能高度集中的；它总要散开。
Like the searchlight beam, the radio beam cannot be made very sharp; it tends to spread.
这些作品的无线电设备的可能是原型，甚至生产未高度标准化的特殊功能的无线链路是有用的。
These pieces of a radio may be useful for prototyping and even production of special function radio links that are not highly standardized.
航天无线电测控仿真环境高度集成、功能全面，具有图形建模、仿真实验运行和结果分析等多种功能。
STTSE is a highly integrated simulation system with overall functions. It has several functions such as graphic simulation model build-up. simulation test running. result analysis and so on.
在驾驶舱内，飞行员在和巴西的空中交通管制人员对话，报告着飞行高度和无线电频率。
In the cockpit, the pilots chattered with Brazilian air traffic control, calling out altitude and radio frequencies.
在驾驶舱内，飞行员在和巴西的空中交通管制人员对话，报告着飞行高度和无线电频率。
In the cockpit, the pilots chattered with Brazilian air traffic control, calling out altitude and radio frequencies.
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