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Orbital objects detection algorithm using faint streaks.

Authors :
Tagawa, Makoto
Yanagisawa, Toshifumi
Kurosaki, Hirohisa
Oda, Hiroshi
Hanada, Toshiya
Source :
Advances in Space Research. Feb2016, Vol. 57 Issue 4, p929-937. 9p.
Publication Year :
2016

Abstract

This study proposes an algorithm to detect orbital objects that are small or moving at high apparent velocities from optical images by utilizing their faint streaks. In the conventional object-detection algorithm, a high signal-to-noise-ratio (e.g., 3 or more) is required, whereas in our proposed algorithm, the signals are summed along the streak direction to improve object-detection sensitivity. Lower signal-to-noise ratio objects were detected by applying the algorithm to a time series of images. The algorithm comprises the following steps: (1) image skewing, (2) image compression along the vertical axis, (3) detection and determination of streak position, (4) searching for object candidates using the time-series streak-position data, and (5) selecting the candidate with the best linearity and reliability. Our algorithm’s ability to detect streaks with signals weaker than the background noise was confirmed using images from the Australia Remote Observatory. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02731177
Volume :
57
Issue :
4
Database :
Academic Search Index
Journal :
Advances in Space Research
Publication Type :
Academic Journal
Accession number :
112677715
Full Text :
https://doi.org/10.1016/j.asr.2015.10.034