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激光测距通信一体化技术研究及深空应用探索
刘向南, 李英飞, 向程勇, 谌明, 李晓亮
北京遥测技术研究所, 北京 100076
摘要:
概述了空间激光测距通信一体化技术的研究现状,提出了一种激光精密测距与高速通信一体化技术,基于双向单程测距原理,在BPSK外差相干激光通信的基础上,采用码元相位测量实现了激光测距与通信一体化设计,并完成了地面实验验证。实验结果表明:在通信码速率1 Gbit/s的情况下,其测距精度优于0.9 mm,并分析了参考时钟频差对测距精度的影响。最后对激光测距通信一体化技术在未来深空探测中的应用进行了探索研究。
关键词:  激光通信;激光测距;一体化;深空
DOI:10.15982/j.issn.2095-7777.2018.02.006
分类号:TN929.12
基金项目:民用航天资助项目
Study on Integrated Technique of Laser Ranging and Communication and Its Applications in Deep Space
LIU Xiangnan, LI Yingfei, XIANG Chengyong, CHEN Ming, LI Xiaoliang
Beijing Research Institute of Telemetry, Beijing 100076, China
Abstract:
The current development of integrated technique of laser ranging and communication is introduced. A new integrated technique of high precision laser ranging and high speed communication is presented based on dual one-way ranging(DOWR)and BPSK modulation heterodyne coherent detection. A symbol phase ranging method is applied to achieve the integrated system design,and the ground experiments are developed. The results show that the data rate of laser link reaches 1 Gbit/s and the ranging precision is better than 0.9 mm. The influence of reference clock frequency difference on ranging precision is analyzed. Finally,future applications of the integrated laser ranging and communication system in deep space exploration are expected.
Key words:  laser communication;laser ranging;intergradations;deep space