摘要
详细地梳理了国内外卫星激光通信技术的发展现状,重点介绍了欧洲、美国、日本和中国近几年在卫星激光通信领域的研究现状。在对当今卫星激光通信技术应用需求和技术难点等加以介绍的基础上,分析了捕获跟踪瞄准、调制解调、大气湍流抑制、抗干扰链路维持等关键技术的实现途径和应用挑战。最后结合目前的航天工程以及社会需求,对卫星激光通信技术的发展趋势进行了展望。
Significance With the rapid development of space technology in the 21st century,the frequency of deep space scientific exploration and manned space missions continues to increase.There is an urgent need to establish a high-speed integrated information network.Highly reliable connectivity between space-based satellite networks and ground-based networks is urgently needed.A large number of high-value satellite on-orbit experiment data will be returned to ensure the smooth progress of scientific research missions.Satellite laser communication has the advantages of high speed,good safety,small size,light weight and no electromagnetic spectrum constraint.Satellite laser communication has gradually stepped out of the laboratory to complete the technical verification between satellite and Earth and between satellites.It is expected to solve the bottleneck of data transmission in the current space information network and meet the growing business needs of aviation and aerospace.Institutions from Europe,the United States,and Japan carried out satellite laser communication research earlier.At the beginning of this century,the on-orbit technology verification of pointto-point inter-satellite/satellite-based acquisition,tracking and pointing,and long distance relayless communication modulation and demodulation has been completed.Space communication technology has been gradually moving towards the practical stage.China has achieved rapid development in the field of satellite laser communication technology in the past 20 years.The original verification was completed,the key technical problems were solved,and the technological level of related devices was greatly improved.Under the traction of engineering missions such as HY-2,Mozi and BD-3,various key technologies of satellite laser communication have been verified in orbit.At present,it is developing towards high-speed networking applications.Progress This paper focuses on the development status of satellite laser communication in Europe,the United States,Japan and China.By c
作者
侯霞
刘哲绮
常亦迪
鲁绍文
方凡
李佳蔚
Hou Xia;Liu Zheqi;Chang Yidi;Lu Shaowen;Fang Fan;Li Jiawei(Aerospace Laser Technology and Systems Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2024年第11期223-236,共14页
Chinese Journal of Lasers
关键词
光通信
卫星激光通信
捕获跟踪瞄准
大气湍流
空间信息网络
optical communications
satellite laser communication
acquisition tracking and pointing
atmospheric turbulence
spatial information network
