A Novel Error Model of Optical Systems and an On-Orbit Calibration Method for Star Sensors [PDF]
Sensors, 2015 In order to improve the on-orbit measurement accuracy of star sensors, the effects of image-plane rotary error, image-plane tilt error and distortions of optical systems resulting from the on-orbit thermal environment were studied in this paper.
Shuang Wang, Yunhai Geng, Rongyu Jin
doaj +3 more sources
An Autonomous Star Identification Algorithm Based on One-Dimensional Vector Pattern for Star Sensors [PDF]
Sensors, 2015 In order to enhance the robustness and accelerate the recognition speed of star identification, an autonomous star identification algorithm for star sensors is proposed based on the one-dimensional vector pattern (one_DVP). In the proposed algorithm, the
Liyan Luo, Luping Xu, Hua Zhang
doaj +3 more sources
Low frequency error analysis and calibration for multiple star sensors system of GaoFen7 satellite
Geo-spatial Information Science, 2022 The GaoFen7 (GF7) optical satellite is the first Chinese civilian sub-meter high-resolution stereo mapping satellite and is equipped with a double linear array camera and laser altimeter to achieve large-scale topographic mapping. To improve the accuracy
Yanli Wang +3 more
doaj +2 more sources
IEEE Access, 2023 The algorithm for star identification is a crucial technology for determining the orientation of spacecraft using star sensors. Traditional star identification algorithms achieve matching by seeking a unique or a few optimal solutions.
Haodong Yan +5 more
doaj +2 more sources
On-Orbit Calibration Method for Star Sensors Based on Microvariation in Intrinsic Parameters
IEEE Sensors Journal, 2023 Environmental variation in space may lead to microvariation in intrinsic parameters of the optical system, which significantly impacts the accuracy of attitude for star sensors.
Liang Wu, Yeqing Jin, Qian Zhang
exaly +2 more sources
Attitude Correlated Frames Based Calibration Method for Star Sensors [PDF]
Sensors, 2023 Star sensors undergo laboratory calibration before they leave the factory. In addition, recalibration is necessary after they experience vibration, deformation, etc.
Liheng Ma +4 more
doaj +2 more sources
An Extended Kalman Filter-Based Attitude Tracking Algorithm for Star Sensors. [PDF]
Sensors (Basel), 2017 Efficiency and reliability are key issues when a star sensor operates in tracking mode. In the case of high attitude dynamics, the performance of existing attitude tracking algorithms degenerates rapidly.
Li J, Wei X, Zhang G.
europepmc +2 more sources
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
doaj +2 more sources
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.
Jie Jiang +4 more
semanticscholar +3 more sources
Impact of proton radiation and annealing of CMOS image sensors on star sensor performance
AIP AdvancesStar sensors play a crucial role as high-precision optical attitude navigation devices in satellite attitude control systems. The CMOS image sensor is an important component of the imaging system of the star sensor and experiences performance degradation
Yi-Hao Cui +5 more
doaj +2 more sources