Motion state analysis of space target based on optical cross section

Qichen Tian; Zhi Li; Can Xu; Chenghao Liu

doi:10.1117/12.2283076

24 October 2017 Motion state analysis of space target based on optical cross section

Qichen Tian, Zhi Li, Can Xu, Chenghao Liu

Proceedings Volume 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation; 104630Y (2017) https://doi.org/10.1117/12.2283076
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China

Abstract

In order to solve the problem that the movement state analysis method of the space target based on OCS is not related to the real motion state. This paper proposes a method based on OCS for analyzing the state of space target motion. This paper first establish a three-dimensional model of real STSS satellite, then change the satellite’s surface into element, and assign material to each panel according to the actual conditions of the satellite. This paper set up a motion scene according to the orbit parameters of STSS satellite in STK, and the motion states are set to three axis steady state and slowly rotating unstable state respectively. In these two states, the occlusion condition of the surface element is firstly determined, and the effective face element is selected. Then, the coordinates of the observation station and the solar coordinates in the satellite body coordinate system are input into the OCS calculation program, and the OCS variation curves of the three axis steady state and the slow rotating unstable state STSS satellite are obtained. Combining the satellite surface structure and the load situation, the OCS change curve of the three axis stabilized satellite is analyzed, and the conclude that the OCS curve fluctuates up and down when the sunlight is irradiated to the load area; By using Spectral analysis method, autocorrelation analysis and the cross residual method, the rotation speed of OCS satellite in slow rotating unstable state is analyzed, and the rotation speed of satellite is successfully reversed. By comparing the three methods, it is found that the cross residual method is more accurate.

Citation Download Citation

Qichen Tian, Zhi Li, Can Xu, and Chenghao Liu "Motion state analysis of space target based on optical cross section", Proc. SPIE 10463, AOPC 2017: Space Optics and Earth Imaging and Space Navigation, 104630Y (24 October 2017); https://doi.org/10.1117/12.2283076

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