Affiliation:
1. Chinese Academy of Sciences
2. University of Chinese Academy of Sciences
Abstract
The construction of a guide star catalog is crucial for a star sensor
to achieve accurate star map recognition and attitude determination.
At present, the methods of a guide star catalog for a large field of
view (FOV) star sensor have been relatively mature. However, for a
small-FOV star sensor, there are still certain problems, such as a
large storage capacity of a guide star catalog, uneven distribution of
stars, and easy occurrence of voids. To address these problems, we
propose a construction method of a small-FOV star sensor guide star
catalog based on the combination of the improved spherical spiral
method (ISSM) and extreme learning machine (ELM) named the ISSM-ELM.
First, a spiral reference point is used as an optical axis pointing of
the star sensor, and the guide stars are preliminarily screened based
on the star-diagonal distance between the star and the reference
point, and the star-density and magnitude characteristics of the guide
star. Then the ELM is used to supplement the guide star empty sky area
to construct an integrity guide star catalog. The experimental results
demonstrate that the proposed method can reduce the storage capacity
of the guide star catalog and improve its uniformity, integrity, and
average brightness.
Funder
West Light Foundation of the Chinese
Academy of Sciences
Department of Science and Technology of
Sichuan Province
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献