摘要
散射通信使用的电波频段大多为C波段。统计表明,散射通信电波在海上传播时,由于海面上空的大气折射指数等气象结构参数原因造成接收信号年中值电平损耗低于陆地;海面上空还经常出现利于电波传播的规则、不规则层反射现象及大气波导现象。上述原因使得散射通信设备在海面上使用时通信距离更远、信道传输容量更高,因此散射通信作为近海应急等通信的保障手段具有广阔的使用前景。
Tropo-scatter communication generally uses C-band electromagnetic wave. It is indicated by statistics that when electromagnetic wave of tropo-scatter communication propagates over the sea, the received signal has lower annual median transmission loss than over the land; phenomena that help electro-wave transmission, such as regular and irregular layer reflection and atmosphere wave-guide, occur frequently. For those reasons, tropo-scatter equipment cross the sea has longer distance and larger capacity. So ,tropo-scatter equipment will be widely used in inshore emergency communications.
出处
《无线电通信技术》
2008年第3期62-64,共3页
Radio Communications Technology
关键词
散射通信设备
应急通信
散射通信海上应用
tropo-scatter equipment
emergency communications
tropo-scatter communications application cross the sea
