A SPECTRAL STAR TRACKER USING A CFA DETECTOR

被引：0

作者：

McVittie, Geoffrey R. ^{[1
]}

Enright, John ^{[1
]}

机构：

[1] Ryerson Univ, Toronto, ON M5B 2K3, Canada

来源：

ASTRODYNAMICS 2011, PTS I - IV | 2012年 / 142卷

关键词：

IDENTIFICATION;

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

In this study, we investigate the measurement and estimation of star colour properties for a new spectral star tracker. A colour-filter-array (CFA) detector modifies a conventional star tracker to sample different regions of a stars spectral emission profile. We adapt conventional monochromatic centroid estimation techniques, such as arithmetic first moment approximation and curve-fitting, to extract colour information from the observed star spot images. Particular attention focuses on the precision of the colour estimates and effects the CFA sampling induces on the colour and centroid estimates. A combination laboratory testing and empirical observations, made using a prototype optics/detector hardware configuration, validates the techniques.

引用

页码：3109 / 3125

页数：17

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