Results 31 to 40 of about 1,576,156 (288)
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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Star-Identification System Based on Polygon Recognition
Aerospace, 2023 Accurate attitude determination is crucial for satellites and spacecraft. Among attitude determination devices, star sensors are the most accurate. Solving the lost-in-space problem is the most critical function of the star sensor.
Gustavo E. Ramos-Alcaraz +2 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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Remote Sensing, 2020 Owing to the vibrations and thermal shocks that arise during the launch and orbit penetration process, the on-orbit installation parameters of multiple star sensors are different from the on-ground measured parameters, causing inconsistencies in the ...
Yanli Wang, Mi Wang, Ying Zhu
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Processing Centroids of Smearing Star Image of Star Sensor [PDF]
Mathematical Problems in Engineering, 2014 A novel method was presented for increasing the accuracy of subpixel centroid estimation for smearing star image. Model of the smearing trajectory of smearing star was built. It helped to study the analytical form of the errors, caused by image smearing, for centroid estimation.
Yufu Liao +3 more
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Research on Partitioning Algorithm Based on Dynamic Star Simulator Guide Star Catalog
IEEE Access, 2021 The simulated star map generated by the dynamic star simulator cannot meet the current demand for calibration of the star map recognition rate of the star sensor due to the huge amount of guide star catalog data and the slow retrieval process. This paper
Guangxi Li +6 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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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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Remote SensingThis study evaluates mission-long inter-sensor radiometric calibration biases in Sensor Data Record (SDR) and/or Temperature Data Record (TDR) radiances from NOAA microwave sounders, including Advanced Technology Microwave Sounder (ATMS) (Suomi National ...
Banghua Yan +4 more
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Remote SensingThis study provides a comprehensive, long-term evaluation of inter-sensor radiometric calibration biases for the NOAA OMPS Nadir and CrIS instruments using four complementary validation methodologies implemented within the Inter-Sensor Radiometric Bias ...
Banghua Yan +6 more
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