雷达 Radar
（重定向自Radio detecting and ranging）
雷达（RADAR），是英文「Radio Detection and Ranging」（无线电侦测和定距）的缩写及音译。将电磁能量以定向方式发射至空间之中，借由接收空间内存在物体所反射之电波，可以计算出该物体之方向，高度及速度，并且可以探测物体的形状。以
Radio detecting and ranging
中文百科
英语百科
Radar 雷达
（重定向自Radio detecting and ranging）
Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar transmits radio waves or microwaves that reflect from any object in their path. A receive radar, which is typically the same system as the transmit radar, receives and processes these reflected waves to determine properties of the object(s).
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