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http://dx.doi.org/10.6109/jkiice.2018.22.11.1448

Streak Estimation Method for Obtaining Orbital Information of Unknown Space Objects  

Hyun, Chul (M&S R&D Team, LIG Nex1)
Lee, Sangwook (M&S R&D Team, LIG Nex1)
Lee, Hojin (M&S R&D Team, LIG Nex1)
Lee, Jongmin (IIR Seeker R&S Lab, LIG Nex1)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.22, no.11, 2018 , pp. 1448-1454 More about this Journal
Abstract
In an optical observing system, three pairs of observations at equal time intervals are required for the orbit determination method to obtain orbital information of an unknown space objects. In this paper, we propose a method of estimating a streak for acquiring three pairs of observations using one streak image information. Satellite trajectory simulation data were generated for nine cases using the STK program in order to verify the characteristics of the orbit of space object and estimation performance. Simulation was performed by applying three approaches that can estimate the next streak position after a few seconds from one streak image information, and the estimation performance was evaluated. Linear vector method and Kalman Filter method based on the linear assumption tend to increase the estimation error in the region where the nonlinearity is large. However estimation method using the polynomial curve fitting based on the least square method showed smaller and uniform error result than the previous methods.
Keywords
Space object; Optical observation; Satellite orbit; Streak; Polynomial curve fitting;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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