Results 41 to 50 of about 2,173,291 (371)
A SLIC-DBSCAN Based Algorithm for Extracting Effective Sky Region from a Single Star Image
Sensors, 2021 The star tracker is widely used for high-accuracy missions due to its high accuracy position high autonomy and low power consumption. On the other hand, the ability of interference suppression of the star tracker has always been a hot issue of concern. A
Chenguang Shi +4 more
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Real-Time Convolutional-Neural-Network-Based Star Detection and Centroiding Method for CubeSat Star Tracker [PDF]
IEEE Transactions on Aerospace and Electronic SystemsStar trackers are one of the most accurate celestial sensors used for absolute attitude determination. The devices detect stars in captured images and accurately compute their projected centroids on an imaging focal plane with subpixel precision ...
Hongrui Zhao +4 more
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Research and apply of the quality of star image for star tracker [PDF]
Zhihui kongzhi yu fangzhenIn recent years,with the development of commercial spaceflight, the requirements of the production quality for star tracker in commercial satellite become higher and higher.
SHEN Yuteng, ZHANG Chi
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Development of high-performances monolithic CMOS detectors for space applications [PDF]
, 2002 This paper describes the development of a 750x750 pixels CMOS image sensor for star tracker applications. A first demonstrator of such a star tracker called SSM star tracker built around a 512x512 detector has been recently developed and proves the ...
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IEEE Access, 2020 Absolute attitude estimation sensors provide high accuracy pointing capabilities to spacecraft, but as developed thus far, they constitute a large fraction of CubeSat mission’s budget.
Samuel T. Gutiérrez +2 more
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Exposure Time Optimization for Highly Dynamic Star Trackers
Sensors, 2014 Under highly dynamic conditions, the star-spots on the image sensor of a star tracker move across many pixels during the exposure time, which will reduce star detection sensitivity and increase star location errors.
Xinguo Wei +3 more
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Nature, 2013 As an early adopter of astronomical technology, Andrea Ghez is revealing secrets about the giant black hole at the Galaxy's centre.
openaire +1 more source
Star Catalog Criteria Selection and Mission Catalog Update for a Typical Star Tracker [PDF]
فصلنامه علوم و فناوری فضایی, 2013 Star tracker is an attitude determination device which determines the satellite or spacecraft’s attitude using the star position information in inertial and body references. Star information is collected and stored onboard as a “Star or mission catalog”.
Jafar Roshanian +3 more
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An Evaluation of Low-Cost Vision Processors for Efficient Star Identification
Sensors, 2020 Star trackers are navigation sensors that are used for attitude determination of a satellite relative to certain stars. A star tracker is required to be accurate and also consume as little power as possible in order to be used in small satellites.
Surabhi Agarwal +5 more
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Компьютерная оптика, 2023 A rotational blur correction algorithm is considered as the initial stage of image processing in the problem of attitude measurement using a star tracker. To implement this algorithm, the star tracker must be equipped with a three-axis gyroscope.
N.N. Vasilyuk
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