Results 21 to 30 of about 560,529 (289)
A Survey on Star Identification Algorithms
Algorithms, 2009 The author surveys algorithms used in star identification, commonly used in star trackers to determine the attitude of a spacecraft. Star trackers are a staple of attitude determination systems for most types of satellites.
Daniele Mortari, Benjamin B. Spratling
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SPIE Proceedings, 2001 Current state-of-the-art commercial star sensors typically weigh 15 pounds, attain 5 to 10 arc-second accuracy, and use roughly 10 watts of power. Unfortunately, the current state-of-the-art commercial star sensors do not meet many of NASA's next-generation spacecraft and instrument needs.
N. Clark, P. Furth
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Fast and robust star detection algorithm based on the dyadic wavelet transform
IET Image Processing, 2023 Star detection is an important part of the spacecraft attitude determination performed by star trackers. The current advanced star detection algorithms can effectively extract star points in complex backgrounds.
Zhanglei Chen +3 more
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Remote Sensing, 2022 The rolling shutter effect decreases the accuracy of the attitude measurement of star trackers when they work in rolling shutter exposure mode, especially under dynamic conditions.
Zongqiang Fu +6 more
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A heavy flavor tracker for STAR [PDF]
Nuclear Physics A, 2006 proceedings of the Quark Matter 2005 Conference, Budapest, Hungary; to appear in Nucl. Phys.
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Star Trackers Evaluation by Statistical Analysis [PDF]
فناوری در مهندسی هوافضاA comprehensive statistical analysis and comparison on the characteristics of star trackers used in the world can provide valuable information to researchers, manufacturers and customers in this field.
Mohammad Sajjad Mahdiyari +2 more
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Design and Simulation of a High-Speed Star Tracker for Direct Optical Feedback Control in ADCS
Sensors, 2020 Star Trackers are often the most accurate instrument in an Attitude Determination and Control Systems, but often present a slow update rate, requiring additional sensor and sensor fusion algorithms to provide a smoother and faster output.
Mikaël Marin, Hyochoong Bang
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Payload Camera Breadboard for Space Surveillance—Part I: Breadboard Design and Implementation
Applied Sciences, 2023 The rapid increase of space debris poses a risk to space activities, so it is vital to develop countermeasures in terms of space surveillance to prevent possible threats.
Joel Filho +4 more
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An Integrated Tracker for STAR [PDF]
AIP Conference Proceedings, 2006 The STAR experiment at the Relativistic Heavy Ion Collider RHIC studies the new state of matter produced in relativistic heavy ion collisions and the spin structure of the nucleon in collisions of polarized protons. In order to improve the capabilities for heavy flavor measurements and the reconstruction of charged vector bosons an upgrade of the ...
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Design and Validation of a U-Net-Based Algorithm for Star Sensor Image Segmentation
Applied Sciences, 2023 The present work focuses on the investigation of an artificial intelligence (AI) algorithm for brightest objects segmentation in night sky images’ field of view (FOV).
Marco Mastrofini +2 more
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