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数字微波通信由于具有通信容量大、传输质量高、建设周期短、维护费用低,投资省,抗干扰能力强,易于维护、管理等优点,目前在国内外已得到迅速发展,是一种先进的通信传输手段,并与光纤通信、卫星通信一起被称为现代通信传输的三大支柱。但是在海区,数字微波通信发展困难较大。这主要是由于电波传输与地形、地物、气候、频率及站距等条件有关。电波在海上传输时,海面反射系数大,反射干涉衰落严重;海洋上空容易出现大的水汽压强下降梯度,从而形成超折射,产生由大气波导引起的多径干涉,形成波导型衰落;另外海区
Due to its advantages of large communication capacity, high transmission quality, short construction period, low maintenance cost, investment saving, strong anti-interference ability, easy maintenance and management, digital microwave communication has been rapidly developed both at home and abroad and is an advanced Communication transmission means, and with optical fiber communications, satellite communications together is called the three pillars of modern communications transmission. However, in the sea area, the development of digital microwave communication is more difficult. This is mainly due to the radio transmission and topography, features, climate, frequency and station distance and other conditions. When the waves are transmitted at sea, the reflection coefficient of the sea surface is large and the reflection interference declines seriously. Large descending gradient of vapor pressure tends to occur over the ocean, resulting in super-refraction, resulting in multipath interference caused by the atmospheric waveguide and forming a waveguide-like decline. In addition, the sea area