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随着卫星激光通信技术的发展,激光链路中继卫星系统将成为未来天基信息系统的骨干网。首先设计了一种“2颗国土星+2颗境外星”的网络架构,然后借助地面程控交换技术分析方法,定义了光网络性能指标,最后仿真了激光链路中继卫星系统的网络性能。仿真结果表明,当每颗用户卫星通信业务量为0.2 Erl、接入损失概率要求不大于0.2、链路利用率不小于0.6的情况下,激光链路中继卫星系统的12条接入链路可以支持50颗用户卫星接入。
With the development of satellite laser communication technology, laser link relay satellite system will become the backbone of future space-based information system. First of all, we design a network architecture of “2 Landsat + 2 stars ” and define the performance index of the optical network by using the ground-based program-controlled switching technology analysis method. Finally, the network of the laser link relay satellite system performance. The simulation results show that when the traffic volume per satellite user is 0.2 Erl, the probability of access loss is less than 0.2, and the link utilization rate is not less than 0.6, the 12 access links of the laser link relay satellite system Can support 50 users satellite access.