arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1808.08686cs.DS
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公共子图同构方法在空间丢失星识别中的应用

Empirical Analysis of Common Subgraph Isomorphism Approaches to the Lost-in-Space Star Identification Problem

Glenn Galvizo, Lipyeow Lim

摘要:

识别恒星的过程是航天器中基于恒星的方位确定的一个组成部分。恒星识别涉及将天空图像中的点与天文目录中的恒星进行匹配。建立了一个统一的识别框架,并用于分析六种不同的方法,基于他们的方法来识别恒星集,获得一个单一的图像,目录恒星集匹配,并唯一地映射到一个目录恒星集的图像恒星集中的每一颗恒星。每种方法都被呈现为一个人工图像,并且每个过程之间可互换的方面被归一化。对于一幅含有虚假恒星的图像,金字塔方法具有最高的平均精度,并且是六种方法中最快的。给定一幅图像,其中每颗恒星的真实位置是随机分布的(高斯噪声),球面三角形方法的精度是最不敏感的。

英文摘要:

The process of identifying stars is integral toward stellar based orientation determination in spacecraft. Star identification involves matching points in an image of the sky with stars in an astronomical catalog. A unified framework for identification was created and used to analyze six variations of methods based on their approach to star set identification, obtaining a single image to catalog star set match, and uniquely mapping each star in a image star set to a catalog star set. Each method was presented an artificial image, and aspects that were interchangeable among each process were normalized. Given an image with false stars, the Pyramid method has the highest average accuracy and is the fastest of the six. Given an image where each star's true position is distributed randomly (Gaussian noise), the Spherical Triangle method's accuracy is the least sensitive.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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