Target attitude estimation for motional Large Aperture Telescope (LAT)

JiaMing Lei; RongQi Ma; YunXia Xia; Xiang Liu; Qiang Wang; QiongYan Wu; Dong He; JinYing Li; XiJun Zhao; Chao Peng; LiangZhu Yuan; YongMei Huang; Ge Ren

doi:10.1117/12.2604004

13 December 2021 Target attitude estimation for motional Large Aperture Telescope (LAT)

JiaMing Lei, RongQi Ma, YunXia Xia, Xiang Liu, Qiang Wang, QiongYan Wu, Dong He, JinYing Li, XiJun Zhao, Chao Peng, LiangZhu Yuan, YongMei Huang, Ge Ren

Author Affiliations +

Proceedings Volume 12070, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirror and Telescopes; 1207006 (2021) https://doi.org/10.1117/12.2604004
Event: Tenth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2021), 2021, Chengdu, China

Abstract

With the widening of the application scenarios for target observation, the traditional ground-based fixed LAT system has been unable to meet the requirement of high precision tracking ，the LAT need to be installed on different motion platforms. In this case, a series of photoelectric tracking systems based on motion platforms have been derived. The combination of LAT and moving platform brings a new problem--Disturbance such as braking, vibrating, and shaking of the platform will cause the deflection and shaking of the LAT imaging screen, which will have a great impact on the LAT tracking. In this paper, a method to determine the change of the attitude angle θ of the target in the field of view caused by the movement of a moving platform is proposed to suppressed overcome the disturbance introduced caused by the application of LAT in moving platform carrier. According to the angular position data of the target tracking point acquired by the CCD system and the attitude information of the motion platform in the geodetic coordinate system provided by the inertial navigation system, the attitude angle of the target can be calculated by applying the proposed attitude estimation algorithm. This method not only, provides a specific estimation process of target attitude angle, but also offers principle information for tracking state decision, image processing, and fiducial direction calculation.

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JiaMing Lei, RongQi Ma, YunXia Xia, Xiang Liu, Qiang Wang, QiongYan Wu, Dong He, JinYing Li, XiJun Zhao, Chao Peng, LiangZhu Yuan, YongMei Huang, and Ge Ren "Target attitude estimation for motional Large Aperture Telescope (LAT)", Proc. SPIE 12070, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirror and Telescopes, 1207006 (13 December 2021); https://doi.org/10.1117/12.2604004

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KEYWORDS

Geodesy

Detection and tracking algorithms

Image processing

Telescopes

Navigation systems

Charge-coupled devices

Motion measurement

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