Analysis of Coaxiality Error Induced by the Cube Corner Retro-Reflector Geometrical and Assembly Errors of an Acquisition, Pointing, and Tracking System

Satellite laser communication is a promising technology for the next-generation communication system. Its communication performance is subject to the APT beam-pointing accuracy. One of the most important problems is reducing the coaxiality error before the APT starts working. However, the coaxiality...

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Published inPhotonics Vol. 10; no. 10; p. 1176
Main Authors Li, Daquan, Mao, Zhaoyong, Sun, Lijuan, Zhang, Haifeng, Zhang, Furui
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2023
Subjects
Accuracy
Analysis
Assembly
assembly error
beam-pointing accuracy
Calibration
Centroids
coaxiality
Communications systems
cube corner retro-reflector
Dihedral angle
Empirical analysis
Error analysis
Error correction
Lasers
Light
Mathematical models
Microwave communications
Optical communication
Qualitative analysis
Satellite communications
Satellite tracking
Sensors
space laser communication
Tracking systems
China
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Summary:Satellite laser communication is a promising technology for the next-generation communication system. Its communication performance is subject to the APT beam-pointing accuracy. One of the most important problems is reducing the coaxiality error before the APT starts working. However, the coaxiality error is difficult to correct effectively owing to the lack of empirical guidance based on qualitative analysis. We study the inducement that will generate coaxiality errors. The mathematical model of the influence of the CCR dihedral angle error and planeness error on the spot centroid measurement are built, and an analysis is performed. The model of the beam-pointing error induced by the APT element’s assembly error is built, and the pointing error change rule is explored. Furthermore, the coaxiality performance simulation is performed in the presence of a CCR geometrical error while considering the assembly error. The results show that the coaxiality error has a nonlinear characteristic. The CCR planeness error has a greater influence on coaxiality deviation than that of dihedral angle error under certain conditions. This research is relevant to the design and test work of the APT system.
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ISSN:2304-6732
2304-6732
DOI:10.3390/photonics10101176