高精度小卫星星座激光通信仿真平台设计

针对小卫星星座中卫星间进行激光通信的要求，本文提出了一种新的高精密小卫星星座激光通信仿真平台。该仿真平台由两个模拟卫星和一个控制中心组成，模拟卫星以高精度三轴气浮转台为卫星平台，由星务计算机和各种星上姿态敏感器及姿态执行器构成,高精密气浮转台为卫星提供空间工作环境，星务计算机及姿态敏感器及执行器为卫星平台实现高精度的指向精度提供了保障。该仿真平台可根据任务需要进行双星主从控制、双星协同控制、三星主从控制、三星协同控制和单星故障控制仿真。文中还为仿真平台建立了坐标系，并提出了系统仿真的数学模型。最后经过仿真，本仿真仿真可以满足小卫星星座激光通信的要求。

Design of high precision Small Satellite Constellation Laser Communication Simulation Platform

One new high precision small satellite constellation laser communication simulation system is introduced, based on the demand of small satellite constellation laser communication between satellites. The system consists of two simulative satellites and a control center. The simulative satellite based on high precision triaxial flotation Turntable is comprised of satellite computer and diversified attitude sense organs and attitude executers on satellite. High precision triaxial flotation Turntable can afford the working environment for satellite, the satellite computer and the attitude sense organs and attitude executers manage to make the triaxial flotation Turntable get high pointing accuracy. The simulation system can work in many modes, including Master-Slave mode for double satellites, cooperative mode for double satellites, Master-Slave mode for three satellites, cooperative mode for three satellites and single satellite failure mode. The paper established coordinate for the system and bring forward mathematic model. At the end, the simulation is given, and the simulation can satisfy the demand of small satellite constellation laser communication.