Results 21 to 30 of about 29,428 (246)
An Optical System of Star Sensors with Accuracy Performance Varying with the Field of View
Sensors, 2023 The field of view and single-star measurement accuracy are crucial metrics for assessing the performance of a star sensor. The field of view determines the spatial range of stars that can be captured by the sensor, while the single-star measurement ...
Xiaoheng Wang +3 more
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Sensors, 2021 Attitude update rate is one of the important indicators of star sensor performance. In order to resolve the problem of the low attitude update rate of star sensors, this paper proposes a star sensor attitude update method based on star point correction ...
Longdong He +4 more
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International Conference on Space Optics — ICSO 1997, 2018 This paper, “Novel star sensor," was presented as part of International Conference on Space Optics—ICSO 1997, held in Toulouse, France.
Ad A. Maas +3 more
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A Fast Star Identification Algorithm of Star Sensors in the LIS Mode
Remote Sensing, 2022 In the South Atlantic Anomaly (SAA) area, due to the influence of transient noise caused by space radiation, a star sensor can easily stay in the lost-in-space (LIS) mode for a long time. To solve this problem, this paper proposes a fast star identification (FSI) algorithm.
Lu, Kaili +4 more
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Star Centroiding Based on Fast Gaussian Fitting for Star Sensors [PDF]
Sensors, 2018 The most accurate star centroiding method for star sensors is the Gaussian fitting (GF) algorithm, because the intensity distribution of a star spot conforms to the Gaussian function, but the computational complexity of GF is too high for real-time applications.
Wan, Xiaowei +4 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 centroiding error compensation for intensified star sensors
Optics Express, 2016 A star sensor provides high-precision attitude information by capturing a stellar image; however, the traditional star sensor has poor dynamic performance, which is attributed to its low sensitivity. Regarding the intensified star sensor, the image intensifier is utilized to improve the sensitivity, thereby further improving the dynamic performance of ...
Jie, Jiang +4 more
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Blurred Star Image Processing for Star Sensors under Dynamic Conditions [PDF]
Sensors, 2012 The precision of star point location is significant to identify the star map and to acquire the aircraft attitude for star sensors. Under dynamic conditions, star images are not only corrupted by various noises, but also blurred due to the angular rate of the star sensor.
Zhang, Weina, Quan, Wei, Guo, Lei
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Research and application of domestic micro star sensor
Dianzi Jishu Yingyong, 2018 Star sensor is an important part of the attitude control of spacecraft. Based on the homemade anti-radiation CMOS APS chip and SoPC control chip, the optical and electrical system of a miniature star sensor is designed, and finally the miniaturization ...
Zheng Tuo, Wang Guanya
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Star Image Prediction and Restoration under Dynamic Conditions
Sensors, 2019 The star sensor is widely used in attitude control systems of spacecraft for attitude measurement. However, under high dynamic conditions, frame loss and smearing of the star image may appear and result in decreased accuracy or even failure of the star ...
Di Liu +3 more
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