基于空间光通信卡塞格伦天线弊端的探讨

张玉侠; 艾勇

红外与激光工程, 2005, 34 (5): 560, 网络出版: 2006-05-25

基于空间光通信卡塞格伦天线弊端的探讨

Drawback of Cassegrain antenna system based on space optical communication

论文大纲

张玉侠艾勇

作者单位

武汉大学,电子信息学院,激光通信实验室,湖北,武汉,430079

激光通信光学天线卡塞格伦天线渐晕像差 Laser communication Optical antenna Cassegrain telescope Vignette Aberration

摘要

对于任何通信系统而言,天线能否正确发射和接收有效信号是人们最为关心的问题.对于点对点的激光通信系统而言,由于激光与电波迥然不同的特点,在天线系统的设计上更需严格要求.在空间光通信系统中,光学天线是一个物镜系统,通过折射、反射和折射-反射光学系统实现,目前应用比较广泛的是牛顿系统、格林系统以及卡塞格伦系统.讨论了卡塞格伦天线系统,该系统的结构(双反射式)决定了存在遮挡比造成光能量浪费的潜在问题,也就是所谓的渐晕现象.另一个问题是像差,也就是卡塞格伦天线系统要获得良好的像质必须以牺牲视场为代价.基于这两点提出了减小渐晕的几种新方案,并从减小像差上进行了理论分析.

Abstract

Antenna, which whether transmits or receives correct signal or not is our main care and our direction, is an important part in any communication systems. Because of the characteristics of laser different from radio, the antenna system of point-to-point laser communication system must be designed strictly. Newton system, Green system and Cassegrain system are accepted commonly in optical antenna systems as field lens which include refraction system, inflection system and refraction-and-inflection system. In this paper, Cassegrain antenna is discussed. However, the potential problem of sheltering ratio in Cassegrain system leads to a loss of effective power of the optical system so called vignette phenomena. The other is related to optical aberration, because Cassegrain antenna sacrifices sight field for perfect image. We put forward some new solution and analyze theoretically how to reduce aberration based on the two considerations.

参考文献

[1] ZHI Xin-jun, AI Yong. Design and analysis of a kind of optical system for free space optical communication [J].Semiconductor Optoelectronics(支新军,艾勇.一种自由空间光通信光路的设计与分析.半导体光电),2003,24(3):197-216.

[2] XIAO Ze-xin, Wang Kun. The research of refractive receive of ray antenna design in free space optical communication[J].Wireless of Optical Communication Technology(萧泽新,王昆.自由空间光通信折射式接收光天线的设计研究.无线光通信技术),2003,(2):26-29.

[3] GAO Zhan, Zhang Yi-bo. Optical antenna system in free space optical communication system[J].Modern Science & Technology of Telecommunications(高瞻,张一波.自由空间光通信系统中的光学天线系统.现代电信科技),2003,(3):24-27.

[4] Juan M Ceniceros, James R Lesh. Optical communication study for the next gerneration space telescope[A]. SPIE[C].1999,3615.

[5] . Techniques for matching laser TEM00 mode to obstructed circular aperture[J]. Appl Optics, 1970, 9(6): 1435-1442.

[6] . Optical antenna gain-1-transmitting antenna[J]. Appl Optics, 1974, 13(9): 2134-211.

[7] CHEN Hal-qing.Modem Practical Optical System[M]. Wuhan:HUST University Press.(陈海清.现代实用光学系统,武汉:华中科技大学出版社),2003.

[8] YU Dao-yin,TAN Heng-ying. Optical Engineering [M].Beijing:China Machine Press.(郁道银,谈恒英.工程光学.北京:机械工业出版社),1999.

[9] WU Zong-fan, LIU Mei-lin, ZHANG Shao-ju,et al. The Infrared and Micro-optics Technology[M].Beijing:National Defence Industry Press(吴宗凡,柳美琳,张绍举,等.红外与微光技术.北京:国防工业出版社),1998.

张玉侠, 艾勇. 基于空间光通信卡塞格伦天线弊端的探讨[J]. 红外与激光工程, 2005, 34(5): 560. 张玉侠, 艾勇. Drawback of Cassegrain antenna system based on space optical communication[J]. Infrared and Laser Engineering, 2005, 34(5): 560.

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