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一点对多点同时激光通信视轴姿态解算方法
引用本文:王利辉, 张立中, 孟立新, 白杨杨. 一点对多点同时激光通信视轴姿态解算方法[J]. 电子与信息学报, 2023, 45(8): 2919-2926. doi: 10.11999/JEIT221533
作者姓名:王利辉  张立中  孟立新  白杨杨
作者单位:1.长春理工大学机电工程学院 长春 130022;;2.内蒙古民族大学工学院 通辽 028000;;3.长春理工大学空地激光通信技术重点学科实验室 长春 130022
基金项目:国家自然科学基金联合基金项目“叶企孙”科学基金(U2141231),吉林省教育厅科学技术研究项目(JJKH20210836KJ)
摘    要:针对1点对多点同时激光通信光端机的小型化、轻量化、网络化的技术需求,该文简化了光端机上的多个陀螺,提出一种利用单陀螺实现多个光学视轴同时稳定的方案。为求解多光学视轴姿态,根据欧拉定理重新定义了每个指向镜的坐标系,建立了基于转动4元数的多光学视轴姿态数学模型。为了求解该数学模型的参数,给出了相对应的4阶龙格库塔解算方法,并进行了“三子样”算法优化。最后,将数值解算结果与3种典型圆锥运动的真值进行比较,获得了不同指向镜视轴姿态的解算误差曲线。结果表明,在60 s仿真时间内4阶龙格库塔法对4个光学视轴姿态的联合解算精度优于10–4 μrad,验证了该模型的有效性。经过“三子样”算法优化后,3种典型圆锥运动的解算精度分别提高了3个数量级、3个数量级和1个数量级,达到了精度优化的目的。该方法的提出,为捷联稳定技术在激光通信组网中的应用提供了理论依据。

关 键 词:激光通信   1点对多点   转动4元数   多视轴捷联稳定
收稿时间:2022-12-12
修稿时间:2023-03-02

Solution Method of Line-of-sight Attitude in One-point to Multi-point Simultaneous Laser Communication System
WANG Lihui, ZHANG Lizhong, MENG Lixin, BAI Yangyang. Solution Method of Line-of-sight Attitude in One-point to Multi-point Simultaneous Laser Communication System[J]. Journal of Electronics & Information Technology, 2023, 45(8): 2919-2926. doi: 10.11999/JEIT221533
Authors:WANG Lihui  ZHANG Lizhong  MENG Lixin  BAI Yangyang
Affiliation:1. School of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Changchun 130022, China;;2. College of Engineering, Inner Mongolia University for Nationalities, Tongliao 028000, China;;3. Fundamental Science on Space-Ground Laser Communication Technology Laboratory, Changchun University of Science and Technology, Changchun 130022, China
Abstract:Considering the technical requirements of one-point to multi-point simultaneous laser communication for miniaturization, light weight and networking of optical transceiver, the multiple gyroscopes on the optical transceiver are simplified, and a scheme of realizing simultaneous stability of multiple optical line-of-sights by using a single gyroscope is proposed. In order to calculate the attitude of multiple optical line-of-sights, the coordinate system of each pointing mirror is redefined according to the Euler theorem, and the mathematical model of multiple optical line-of-sights attitude based on rotating quaternion is established. In order to calculate the parameters of the mathematical model, the fourth-order Runge-Kutta algorithm is given, and the three-sample algorithm is optimized. Finally, the numerical solution results are compared with the true values of three typical cone motions, and the solution error curves of different pointing mirror line-of-sight postures are obtained. The results show that the fourth-order Runge-Kutta method is superior to 10-4 μrad in the simulation time of 60 s, which verifies the effectiveness of the model. After the optimization of the three-sample algorithm, the accuracy of the joint solution of three typical conical motions is improved by 3 orders of magnitude, 3 orders of magnitude and 1 order of magnitude respectively, and the purpose of accuracy optimization is achieved. This method provides a theoretical basis for the application of strapdown stabilization technology to laser communication networking.
Keywords:Laser communication  One-point to multi-point  Rotating quaternion  Multiple optical line-of-sights strapdown stability
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