1·LOW RANGE RADIO ALTIMETER, a system that measures the vertical distance from the airplane to the terrain.
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。
2·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.
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。