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http://dx.doi.org/10.5302/J.ICROS.2012.18.3.224

Correction Method of Tracking Error for Astronomical Telescope Using Recursive Least Square Method  

Kwak, Dong-Hoon (Inha University)
Kim, Tae-Han (Inha University)
Lee, Young-Sam (Inha University)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.18, no.3, 2012 , pp. 224-229 More about this Journal
Abstract
In this paper, we propose a correction method for astronomical telescope using recursive least square method. There are two ways to move a telescope : equatorial operation and altazimuth operation. We must align polar axis of a equatorial telescope with the north celestial pole and adjust the horizontal axis of a altazimuth telescope exactly to match the celestial coordinate system with the telescope coordinate system. This process needs time and expertise. We can skip existing process and correct a tracking error easily by deriving the relationship of the celestial coordinate system and the telescope coordinate system using the proposed correction method. We obtain the coordinate of a celestial body in the celestial coordinate system and the telescope coordinate system and derive a transformation matrix through the obtained coordinate. We use recursive least square method to estimate the unknown parameters of a transformation matrix. Finally, we implement a telescope control system using a microprocessor and verify the performance of the correction method. Through an experiment, we show the validity of the proposed correction method.
Keywords
astronomical telescope; correction method; recursive least square method;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
Times Cited By SCOPUS : 1
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