Results 1 to 10 of about 20,994 (210)
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.
Xiaowei Wan, Gangyi Wang, Xinguo Wei
exaly +6 more sources
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.
Weina Zhang, Wei Quan
exaly +6 more sources
Star Identification Based on Multilayer Voting Algorithm for Star Sensors. [PDF]
Sensors (Basel), 2021 This paper describes the multilayer voting algorithm, a novel autonomous star identification method for spacecraft attitude determination. The proposed algorithm includes two processes: an initial match process and a verification process. In the initial match process, a triangle voting scheme is used to acquire candidates of the detected stars, in ...
Liu M, Wei X, Wen D, Wang H.
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Self-Calibration for Star Sensors. [PDF]
Sensors (Basel)Aiming to address the chicken-and-egg problem in star identification and the intrinsic parameter determination processes of on-orbit star sensors, this study proposes an on-orbit self-calibration method for star sensors that does not depend on star identification.
Fu J, Lin L, Li Q.
europepmc +4 more sources
Sieve Search Centroiding Algorithm for Star Sensors. [PDF]
Sensors (Basel), 2023 The localization of the center of the star image formed on a sensor array directly affects attitude estimation accuracy. This paper proposes an intuitive self-evolving centroiding algorithm, termed the sieve search algorithm (SSA), which employs the structural properties of the point spread function.
Karaparambil VC +2 more
europepmc +4 more sources
An Optical System of Star Sensors with Accuracy Performance Varying with the Field of View [PDF]
Sensors, 2023 Zhikun Li
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Theoretical Limits of Star Sensor Accuracy [PDF]
Sensors, 2019 To achieve mass, power and cost reduction, there is a trend to reduce the volume of many instruments aboard spacecraft, especially for small spacecraft (cubesats or nanosats) with very limited mass, volume and power budgets. With the current trend of miniaturizing spacecraft instruments one could naturally ask if is there a physical limit to this ...
Marcio A. A. Fialho, Daniele Mortari
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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.
Kaili Lu +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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Guide Star Selection for the Three-FOV Daytime Star Sensor [PDF]
Sensors, 2019 To realize the application of the star sensor in the all-day carrier platform, a three-field-of-view (three-FOV) star sensor in short-wave infrared (SWIR) band is considered. This new prototype employs new techniques that can improve the detection capability of the star sensor, when the huge size of star identification feature database becomes a big ...
Liang Wu 0007 +4 more
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