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液晶光学相控技术在卫星通信多接入中的应用

Application of liquid crystal optical phasing technique in multi - access of satellite communication

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摘要

在空间激光通信、组网过程中, 为了能够实现一颗卫星终端对多颗卫星终端的物理光束接入, 从而使得一颗卫星能与多颗卫星实现数据分发、路由、交换等组网功能, 对卫星激光通信捕跟过程中存在的多终端物理接入方法进行了研究。在基于液晶光学相控阵多波束生成能力和多波束赋形的理论基础上, 设计了一种新型的多终端接入方法。该方法的核心是利用液晶光学相控阵的多波束生成与控制能力实现对多个终端的接入。对光束在远场光斑的位置信息以及接入过程中的衍射效率和能量损耗情况进行仿真来验证该方案是否满足空间激光通信终端接入要求。仿真结果发现接入过程中的衍射效率大于80%, 能量损耗小于1 dB, 表明该方案有效可行。

Abstract

In the process of space laser communication and networking, in order to achieve a satellite terminal for the physical beam access to a plurality of satellite terminals, thereby enabling a satellite to achieve data distribution, routing, switching and other networking functions with multiple satellites, the multi-user physical access method in the process of satellite laser communication acquisition and tracking was studied. Based on the theory of multi-beam forming ability and multi-beam forming of liquid crystal optical phased array, a new type of multi-user access method was designed. The core of this method was to realize the access to multiple terminals by using multi-beam generation and control ability of liquid crystal optical phased array. The position information of the beam in the far field and the diffraction efficiency and energy loss during the process were simulated to verify whether the scheme met the requirements of the space laser communication terminal. The simulation results show that the diffraction efficiency of the access process is greater than 80%, energy loss less than 1 dB, the results display that the proposed method is effective and feasible.

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中图分类号:TN247

DOI:10.3788/irla201746.1122004

所属栏目:光通信与光传感

基金项目:国家自然科学基金青年科学基金(61405029); 国家自然科学基金重大研究计划(91438108); 上海航天SAST基金(SAST2015087)

收稿日期:2017-03-11

修改稿日期:2017-04-21

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作者单位    点击查看

张天一:电子科技大学 电子科学技术研究院, 四川 成都 610054
汪相如:电子科技大学 光电信息学院, 四川 成都 610054
黄子强:电子科技大学 电子科学技术研究院, 四川 成都 610054
吴亮:电子科技大学 物理电子学院, 四川 成都 610054
许剑华:电子科技大学 电子科学技术研究院, 四川 成都 610054
谭庆贵:空间电子信息技术研究院 中国空间技术研究院, 陕西 西安 710000

联系人作者:张天一(zty920721@163.com)

备注:张天一(1992-), 男, 硕士生, 主要从事液晶相控阵、空间激光通信方面的研究。

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引用该论文

Zhang Tianyi,Wang Xiangru,Huang Ziqiang,Wu Liang,Xu Jianhua,Tan Qinggui. Application of liquid crystal optical phasing technique in multi - access of satellite communication[J]. Infrared and Laser Engineering, 2017, 46(11): 1122004

张天一,汪相如,黄子强,吴亮,许剑华,谭庆贵. 液晶光学相控技术在卫星通信多接入中的应用[J]. 红外与激光工程, 2017, 46(11): 1122004

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