TY - GEN
T1 - Advanced Acquisition and Tracking Technology for Satellite Laser Communication
AU - Fan, Feng
AU - Liu, Chen
AU - Zhang, Ruoyu
AU - Yuan, Yabo
AU - Tai, Xinhui
AU - Wu, Siliang
AU - Wang, Bo
N1 - Publisher Copyright:
© 2025 SPIE.
PY - 2025
Y1 - 2025
N2 - Space laser communication technology has the advantages of high communication rate, strong anti-interference performance, no need for spectrum authorization, less weight and low power consumption. Laser link acquisition and tracking is the core technology of space laser communication. With the construction of large-scale constellation, higher requirements are put forward for laser link acquisition and tracking technology. In order to quickly complete the acquisition and tracking of the laser link and keep the stability of the laser link for a long time, the acquisition and tracking technology of the laser communication system needs to be constantly improved. In this paper, a target acquisition and tracking technique based on variable beam divergence angle is proposed. The beam with large divergence angle is used to achieve fast capture of laser link, and the beam with small divergence angle is used to achieve long distance high-speed communication. By adjusting the collimator distance l from 995mm to 1005mm, the divergence angle can vary between 21.6μrad and 950μrad. The acquisition probability of different divergence angles is analyzed. When the standard deviation of random position angle is constant, the acquisition probability increases with the increase of divergence angle.
AB - Space laser communication technology has the advantages of high communication rate, strong anti-interference performance, no need for spectrum authorization, less weight and low power consumption. Laser link acquisition and tracking is the core technology of space laser communication. With the construction of large-scale constellation, higher requirements are put forward for laser link acquisition and tracking technology. In order to quickly complete the acquisition and tracking of the laser link and keep the stability of the laser link for a long time, the acquisition and tracking technology of the laser communication system needs to be constantly improved. In this paper, a target acquisition and tracking technique based on variable beam divergence angle is proposed. The beam with large divergence angle is used to achieve fast capture of laser link, and the beam with small divergence angle is used to achieve long distance high-speed communication. By adjusting the collimator distance l from 995mm to 1005mm, the divergence angle can vary between 21.6μrad and 950μrad. The acquisition probability of different divergence angles is analyzed. When the standard deviation of random position angle is constant, the acquisition probability increases with the increase of divergence angle.
KW - acquisition and tracking
KW - satellite laser communication
KW - variable-beam divergence angle
UR - http://www.scopus.com/inward/record.url?scp=85219089091&partnerID=8YFLogxK
U2 - 10.1117/12.3058996
DO - 10.1117/12.3058996
M3 - Conference contribution
AN - SCOPUS:85219089091
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Advanced Fiber Laser Conference, AFL 2024
A2 - Chang, Guoqing
A2 - Feng, Yan
PB - SPIE
T2 - 2024 Advanced Fiber Laser Conference, AFL 2024
Y2 - 8 November 2024 through 10 November 2024
ER -