海洋渔业船舶GPS导航通信指挥系统调制方式的选择

The Modulating-mode Selection of GPS Navigation Communication System in Ocean Fishing Vessel

为解决GPS数据通信链路中传输抗干扰问题,选择性能良好的调制方式十分重要。本文在比较了多种常用的调制方式并参考了一些已有系统的使用后,选择了适于高速率并有良好抗干扰能力及频率特性的GMSK为MODEM的调制方式。

It is very important to select good-capability modulating-mode in order to solve the anti-jamming problem on GPS communication link. We have selected that GMSK as the modern modulating-mode which own high-rate and good-capability and frequency specialty, comparing multiform modulating-modes and referring several used systems.