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无线电波是个庞大的家族。随着通信、广播事业的飞速发展,继长波、中波、短波和超短波先后被开发以后,微波也以崭新的姿貌迅速登上信息传递的舞台。微波因波长很短,享有“电波小字辈”之称。微波与光波是近邻,它具有许多类似光线的传输特性,不能拐弯模角,只能在视距范围内传输,因此不能远传。为使信息用微波遥传远方,科学家们将运动场上的接力赛跑移植到通信领域中。为了越过地形
Radio waves are a huge family. With the rapid development of communications and broadcasting, the microwave industry has rapidly emerged as a new stage of information delivery after its long wave, medium wave, short wave and ultrashort wave were successively developed. Due to the short wavelength of microwave, enjoy the “small generation”, said. Microwave and light are neighbors, it has many similar light transmission characteristics, can not turn corner, can only be transmitted within the line of sight, it can not be transmitted. In order to make the information remote with microwaves, scientists relayed the relay race on the stadium to the communications field. To cross the terrain