一种新型大气激光通信系统的设计  

The Design of Novel Atmospheric Laser Communication

作　　者：王佳[1] 

机构地区：[1]北京印刷学院信息与机电工程学院,北京102600

出　　处：《北京印刷学院学报》2009年第6期45-47,共3页Journal of Beijing Institute of Graphic Communication

基　　金：北京印刷学院青年基金项目(E-b-09-07);北京市自然科学基金资助项目(4092013)

摘　　要：针对传统大气激光通信系统浪费了大部分光能量的问题,提出一种新型大气激光通信系统,接收天线采用大口径非成像光学系统的设计,而发射天线的光束发散角设计得非常小,构造"小光束发散角、大接收面"的传输方式,优化了系统的探测方程,提高了大气激光通信系统的带宽、距离和对准的可靠性。大口径非成像光学系统在接收光功率和允许对准误差两个方面都远优于望远镜,而且对接收天线面形精度的要求很低,可以用低成本制造,面形误差所引起的光脉冲展宽对通信系统带宽的影响较小,可以满足绝大多数的通信要求。A novel atmospheric laser communication system has been proposed. The receiving antenna is made by large aperture nonimaging optical system and the beam divergence of transmit antenna is very small. A transmission mode of ＂small beam divergence and large receiving aperture＂ is designed, which can optimize the detection equation and improve the bandwidth, link distance and reliability of atmospheric laser communication system. The nonimaging optical system is better than telescope in receiving power and alignment error. The surface accuracy requirement of nonimaging optical system is low, so that a large aperture one is very cheep. The pulse stretch caused by surface error has little effect to the bandwidth of atmospheric laser communication system.

关 键 词：大气激光通信 对准误差 非成像光学系统 

分 类 号：TN929.1[电子电信—通信与信息系统]