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Efficient Star Identification Using a Neural Network

Intel Corporation, Intel R&D Ireland Ltd, Collinstown, Collinstown Industrial Park, Co., Kildare W23 CX68, Ireland
European Space Agency/ESTEC, Keplerlaan 1, 2201 AZ Noordwijk, the Netherlands
Author to whom correspondence should be addressed.
Sensors 2020, 20(13), 3684;
Received: 27 May 2020 / Revised: 23 June 2020 / Accepted: 28 June 2020 / Published: 30 June 2020
(This article belongs to the Collection Camera as a Smart-Sensor (CaaSS))
The required precision for attitude determination in spacecraft is increasing, providing a need for more accurate attitude determination sensors. The star sensor or star tracker provides unmatched arc-second precision and with the rise of micro satellites these sensors are becoming smaller, faster and more efficient. The most critical component in the star sensor system is the lost-in-space star identification algorithm which identifies stars in a scene without a priori attitude information. In this paper, we present an efficient lost-in-space star identification algorithm using a neural network and a robust and novel feature extraction method. Since a neural network implicitly stores the patterns associated with a guide star, a database lookup is eliminated from the matching process. The search time is therefore not influenced by the number of patterns stored in the network, making it constant (O(1)). This search time is unrivalled by other star identification algorithms. The presented algorithm provides excellent performance in a simple and lightweight design, making neural networks the preferred choice for star identification algorithms. View Full-Text
Keywords: star identification; deep learning; lost-in-space; star feature extraction star identification; deep learning; lost-in-space; star feature extraction
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MDPI and ACS Style

Rijlaarsdam, D.; Yous, H.; Byrne, J.; Oddenino, D.; Furano, G.; Moloney, D. Efficient Star Identification Using a Neural Network. Sensors 2020, 20, 3684.

AMA Style

Rijlaarsdam D, Yous H, Byrne J, Oddenino D, Furano G, Moloney D. Efficient Star Identification Using a Neural Network. Sensors. 2020; 20(13):3684.

Chicago/Turabian Style

Rijlaarsdam, David, Hamza Yous, Jonathan Byrne, Davide Oddenino, Gianluca Furano, and David Moloney. 2020. "Efficient Star Identification Using a Neural Network" Sensors 20, no. 13: 3684.

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