雷达,在科学上更确切的名称应当是“无线电定位”,它的意思是利用波长很短(频率很高)的无线电波(即超短波或微波)的“回声”,来测定目标(如飞机、船舶、坦克等)的位置。雷达是无线电技术中的一个年轻的部门,还是最近20年内成长起来的。但是,我们也可以说:它是紧跟着无线电的诞生而诞生的。1897年,俄罗斯天才的发明家A·C·波波夫,在波罗的海舰队中试验无线电通讯的时候,发现了两艘军舰之间的通讯,由於第三艘军舰驶过它们之间而中断。当他 The scientifically more precise name of radar should be “radio positioning.” It means measuring the target (such as an airplane) by using the “echoes” of short-wavelength (high-frequency) radio waves (ie, ultra-shortwave or microwave). The location of ships, tanks, etc.) Radar is a young sector of radio technology that has grown up in the last 20 years. However, we can also say that it was born following the birth of radio. In 1897, Russian gifted inventor A.C. Popov, while testing radio communications in the Baltic Fleet, discovered communication between two warships and was interrupted by the passage of a third warship across them. when he