Results 21 to 30 of about 32,600 (279)
Optical system design of star sensor and stray light analysis
Journal of the European Optical Society-Rapid Publications, 2018 Background Star sensor is one of the precise attitude determination sensors. It is an electro-optical system that takes an image from a set of stars and by comparing it with the star catalogue determines angle deviation of the satellite and modifies its ...
Mohammad Asadnezhad +2 more
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Research on Star Sensor Imaging Simulation Under Near-Space Hypersonic Non-Equilibrium Flow Conditions [PDF]
SensorsIn order to address the difficulty in acquiring degraded images for star sensors under hypersonic conditions, this paper proposes a star sensor imaging simulation model which can effectively analyze the influence of thermochemical non-equilibrium flow on
Zhen Liao +7 more
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The Tobit-Unscented-Kalman-Filter-Based Attitude Estimation Algorithm Using the Star Sensor and Inertial Gyro Combination [PDF]
Micromachines, 2023 For the orbit operation of spacecraft, due to environmental factors, a star sensor installed on the spacecraft must have data censoring, which greatly reduces the attitude determination ability of the traditional combined-attitude-determination algorithm.
Xinmei Wang +3 more
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Event-Driven Maximum Correntropy Filter Based on Cauchy Kernel for Spatial Orientation Using Gyros/Star Sensor Integration [PDF]
SensorsGyros/star sensor integration provides a potential method to obtain high-accuracy spatial orientation for turntable structures. However, it is subjected to the problem of accuracy loss when the measurement noises become non-Gaussian due to the complex ...
Kai Cui +5 more
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Study on the method of precision adjustment of star sensor
Nanotechnology and Precision Engineering, 2018 Star sensors are indispensable spatial measurement sensors for high-resolution earth observation and astronomical observations, and the demand for high measurement accuracy of satellite sensors continues to increase; thus, the star sensor optical machine
Xiaoyan Wang +6 more
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Prototype Development of the Star Sensor for the KITSAT-3 [PDF]
Journal of Astronomy and Space Sciences, 1995 This report presents the development procedure and the results of a prototype star sensor which can be sued as one of the attitude sensors of the KITSAT-3.
Hyunwoo Lee +3 more
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False Star Filtering for Star Sensor Based on Angular Distance Tracking [PDF]
IEEE Access, 2019 The reliability of star sensor in a harsh environment has recently become a research hotspot. In some harsh environment such as plume interference, a large number of false stars can be observed, leading to failure in star identification.
Gangyi Wang +3 more
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Remote Sensing, 2019 Ground control points (GCPs) are generally used to calibrate the installation between the camera and star sensor of a satellite in orbit and improve the geometric positioning accuracy of the satellite.
Zhichao Guan +3 more
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Self-Calibration for Star Sensors
SensorsAiming 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 ...
Jingneng Fu, Ling Lin, Qiang Li
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Study on Fault Detection of Star-Sensor Based on UKF
Xibei Gongye Daxue Xuebao, 2019 The fault detection of star sensor in satellite when no telemetry data from the gyroscope can be obtained is investigated. An algorithm based on the unscented Kalman filter (UKF) is proposed to indicate the occurrence of the fault.
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