基于STK和OPNET的LEO/MEO双层卫星网络路由协议仿真研究

首先用STK仿真得到较优的星座参数,确定卫星网络的物理架构.再根据LEO/MEO双层卫星网络的特点设计路由协议,使各层卫星的负载分配合理,路由表的计算和更新能适合卫星节点的性能和卫星网络拓扑的动态变化性.最后在OPNET中实现卫星网络从物理层到网络层的仿真,主要工作是在进程域中设计进程模块以实现网络层的协议,从而完成仿真平台的设计.

Simulation for LEO/MEO Double-layer Satellite Network Routing Protocols Based on STK and OPNET

First we use STK to get the well suited parameters of the constellations so the physical structure of the satellite network is fixed.And then the routing protocols is designed according to the characteristics of the LEO/MEO double-layer satellite network,they can effectively distribute load to each constellation layer,the calculation and updating of the routing table can match the capacity of the satellite and the dynamic changing of the satellite network topology.Finaly,we accomplish the simulation of the satellite network from physical layer to network layer in OPNET,the main work of which is to design the process model for the network layer protocols,and then the simulation system is done.