| Microwave which is strongly affected by geography and weather propagates in complex circumstance. This article bases on a project of digital microwave communication system. It discusses common problems of wireless horizontal propagation upon the characteristic of wireless horizontal propagation. The effects of attenuation and depolarization induced by sand-dust storms on microwave band electromagnetic waves propagation along horizontal paths are discussed on the basis of the medium sphere scattering theory according to the environment of the desert where the project is located. Then it canvasses the function and structure, and the working of the microwave communication system that is designed to be practiced.Transmitting video data that is gathered during experimentation is a main function of the microwave communication system. This article designs an interface unit that is used in the system. The unit controls channel switch and video transmission and completes other functions. And in the condition of studying modern technique of computer network, it makes up a computer network by using the wireless channel of the microwave communication system, gives us a video transmission scheme that is convenient, fast and exact. |
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