Tracking and aiming control system for satellite earth quantum tracker

被引：0

作者：

Fei Q. ^{[1
]}

Deng Y. ^{[2
]}

Wang X. ^{[1
]}

Shao M. ^{[2
]}

Xie H. ^{[1
]}

Sun J. ^{[1
]}

机构：

[1] Ji Hua Laboratory, Foshan

[2] Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun

来源：

Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2022年 / 30卷 / 24期

关键词：

ADRC Model Predictive Control; aiming control system; fractional or⁃ der tracking differentiator; quantum communication; quantum tracker; tracking;

D O I：

10.37188/OPE.20223024.3178

中图分类号：

学科分类号：

摘要：

The long transmission distance of satellite ground quantum communication and the relative mo⁃ tion between the satellite and ground increase the tracking performance requirements of a quantum tracker. To improve the tracking accuracy of satellite ground quantum communication and reduce the error rate of quantum communication，the tracking and pointing control system of a quantum tracker is investigated in this study，and the total disturbance affecting the tracking accuracy is compensated. First，the satellite ground quantum communication link and the quantum communication process and its influencing factors are introduced. A mathematical model of the quantum tracker is then constructed. Based on the mathemat⁃ ical model of the tracker，an active disturbance rejection control（ADRC）model predictive control algo⁃ rithm is designed and proposed. To solve the problem of mode switching，a fractional order tracking differ⁃ entiator is proposed to optimize the trajectory and thus reduce overshoot. Experimental results of quantum communication with the“Mozi”satellite reveal that the fractional order tracking differentiator improves the target acquisition speed by 22% following mode switching. Compared with the traditional PI control，the proposed ADRC model predictive control has stronger anti-interference capabilities，weakens the miss dis⁃ tance peak of pitch reversal，and has a tracking accuracy that reaches 2. 9. The quantum polarization data reception is improved，and the total bit error rate is reduced to 1. 18%. The proposed control algorithm can further improve the tracking accuracy of the quantum tracker，reduce the bit error rate，and meet the accuracy requirements of satellite ground quantum communication. © 2022 Chinese Academy of Sciences. All rights reserved."

引用

页码：3178 / 3188

页数：10

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