Results 31 to 40 of about 141,665 (237)
Lost-in-space star identification algorithm based on Hausdorff distance with two approaches: Pivot star and celestial sphere segmentation [PDF]
علوم، فناوری و کاربردهای فضایی, 2023 One of the best attitude sensors for space applications is the star sensor. This sensor determines the attitude using stars in the field of view. One of the main advantages of this sensor is attitude initialization using lost-in-space star identification
Mona Zahednamazi +2 more
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A New Pivot Algorithm for Star Identification [PDF]
Journal of Astronomy and Space Sciences, 2014 In this study, a star identification algorithm which utilizes pivot patterns instead of apparent magnitude information was developed. The new star identification algorithm consists of two steps of recognition process.
Jakyoung Nah, Yu Yi, Yong Ha Kim
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Remote Sensing, 2023 Star identification plays a key role in spacecraft attitude measurement. Currently, most star identification algorithms tend to perform well only in a scene without noise and are highly sensitive to noise.
Zijian Zhu +7 more
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Analysis and Improvement of Star Identification Algorithm Based on Singular Value Decomposition for Star Sensor [PDF]
فصلنامه علوم و فناوری فضایی, 2023 One of the attitude sensors for the spacecraft is the star sensor. The attitude calculation by the star sensor includes several steps: image processing, star identification, database search, and implementation of the attitude determination algorithm ...
Mona Zahednamazi, Alireza Toloui
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IEEE Access, 2023 The algorithm for star identification is a crucial technology for determining the orientation of spacecraft using star sensors. Traditional star identification algorithms achieve matching by seeking a unique or a few optimal solutions.
Haodong Yan +5 more
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StarcNet: Machine Learning for Star Cluster Identification* [PDF]
The Astrophysical Journal, 2021 Abstract We present a machine learning (ML) pipeline to identify star clusters in the multicolor images of nearby galaxies, from observations obtained with the Hubble Space Telescope as part of the Treasury Project LEGUS (Legacy ExtraGalactic Ultraviolet Survey).
Gustavo Pérez +6 more
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Sparse Identification of Variable Star Dynamics
The Astrophysical Journal, 2022 Abstract Variable stars play a crucial role as standard candles and provide valuable insights into stellar physics. They can be modeled either through fully fledged hydrodynamical simulations or analytically as systems of coupled differential equations describing the evolution of relevant physical quantities.
Pasquato Mario +12 more
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IEEE Access, 2020 A fast and robust star identification algorithm is proposed in this paper. The algorithm is derived from the grid algorithm but significantly improves the robustness by increasing the probability of the correct close neighbor star and reducing the ...
Jian Li +3 more
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Star-Identification System Based on Polygon Recognition
Aerospace, 2023 Accurate attitude determination is crucial for satellites and spacecraft. Among attitude determination devices, star sensors are the most accurate. Solving the lost-in-space problem is the most critical function of the star sensor.
Gustavo E. Ramos-Alcaraz +2 more
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Identification of Lines in the Spectra of B Stars [PDF]
The Astrophysical Journal, 1934 Identifications of lines in the spectra of B stars are given. About fifty lines for which no previous identifications had been made are interpreted.
Swings, Polydore, Nicolet, M.
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