前言无线电中继通讯近年来发展迅速。在科技先进的西方国家中都已建立了无线电中继通讯网,用于电话、电视、图像传真和数据的传送,不过目前世界上使用的无线电中继装置大多数都在千兆赫以上的频段,频率在一百至一千兆赫之间的超高频无线电中继系统比较少,特别是军用战术无线电中继系统。虽然如此,随着无线电电子技术的飞速进展,超高频军用无 Preface Radio relay communications has developed rapidly in recent years. Most of the advanced western countries have established a radio relay communications network for the transmission of telephone, television, image fax and data. However, most of the radio relay devices currently used in the world are in the frequency band above GHz, and the frequency There are relatively few UHF radio relay systems between one hundred and one gigahertz, in particular military tactical radio relay systems. Nevertheless, with the rapid progress of radio electronic technology, UHF military nothing