2022
DOI: 10.3390/rs14122814
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On-Orbit Geometric Distortion Correction on Star Images through 2D Legendre Neural Network

Abstract: The star tracker is a prerequisite device to realize high-precision attitude determination for a spacecraft. However, due to the errors in optical lens machining, optical path assembly, and temperature alternation, optical instruments suffer from some amount of optical geometric distortion, resulting in declining star tracker accuracy. The on-orbit distortion correction of star images is indispensable for precise performance. In this paper, a novel single-layer 2D Legendre neural network (2DLNN) to automatical… Show more

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