摘要
分析了基于四象限探测器的精跟踪子系统的性能,利用星间激光通信终端样机对精跟踪子系统性能进行测试,并进行了粗跟踪子系统对精跟踪子系统性能的影响测试,通过频谱分析表明,粗跟踪对系统精跟踪性能的影响主要出现在小于200Hz的低频范围、幅度低于45μrad,与卫星在轨微振动谱对系统性能的影响类似,可以统一考虑;对精跟踪子系统性能测试结果表明:精跟踪子系统可以有效补偿卫星平台振动和粗跟踪误差,跟踪精度优于3μrad,可以满足星间激光通信跟踪精度要求。
The performance of the fine tracking subsystem based on quadrant detectors is analyzed specially.The performance of fine tracking subsystem is test by the inter-satellite laser communication terminal.The effects of the coarse tracking subsystem to the fine tracking subsystem are also test.The frequency analysis shows that the effects of coarse tracking almost have the same features,that the frequency is below 200 Hz and the amplitude is below 45μrad.It is similar to the influence of micro-vibration on satellites,which can be considered at the same time.The test result of the performance of the fine tracking subsystem shows that the influence of micro-vibration and coarse tracking residual can be effectively compensated.The fine tracking accuracy is better than 3μrad which can meet the tracking accuracy demand of inter-satellite laser communications.
作者
宋义伟
都金丹
付森
陈龙
SONG Yi-wei;DU Jin-dan;FU Sen;CHEN Long(Laser R＆D Center of Detection Technology of Shanghai Academy of Spacelight Technology, Shanghai 200090, Chin)
出处
《制导与引信》
2017年第3期29-34,共6页
Guidance & Fuze
关键词
激光通信
跟踪精度
地面测试
laser communication
tracking accuracy
ground testing
