摘要
讨论了卫星通信系统中光星际链路特有的抖动噪声及其对信噪比影响的数学描述方法。抖动噪声的模型以指向系统设计为基础 ,用以描述信息发送过程中由于指向偏差引起的信号衰落和偏差的起伏引起的抖动噪声。讨论了一种自适应系统模型 ,可对抖动进行有效抑制 ,并给出了其系统性能。
This paper describes a mathematical model of the jitter noise,and discusses the noise influence on SNR in a satellite-based laser communication system.Based on the design of PAT(pointing,acquisition and tracking)system,the model of the jitter noise focuses on the fading process caused by the jitter deviation on the information transmission.What's more,an adaptive system model is discussed which can reject the jitter noise availably.In the end of this paper,the system performance is presented.
出处
《系统工程与电子技术》
EI
CSCD
2000年第7期14-16,85,共4页
Systems Engineering and Electronics
基金
国家"8 63"高技术计划基金资助课题!(863 - 31 7- 30 5
863 - 31 7- 960 3 - 0 5 - 5
863 - 31 7- 0 3 - 0 6 - 0 9)
关键词
卫星通信
噪声抑制
激光星际链路
Satellite communication Noise suppression Feedforward control
