Results 1 to 10 of about 635,631 (297)
A Brightness-Referenced Star Identification Algorithm for APS Star Trackers [PDF]
Sensors, 2014 Star trackers are currently the most accurate spacecraft attitude sensors. As a result, they are widely used in remote sensing satellites. Since traditional charge-coupled device (CCD)-based star trackers have a limited sensitivity range and dynamic ...
Peng Zhang, Qile Zhao
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A Comprehensive Calibration Method for a Star Tracker and Gyroscope Units Integrated System [PDF]
Sensors, 2018 The integration of a star tracker and gyroscope units (GUs) can take full advantage of the benefits of each, and provide continuous and accurate attitude information with a high update rate.
Wenfeng Tan, Dongkai Dai, Shiqiao Qin
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Remote Sensing, 2021 CubeSats have been widely used in remote sensing applications such as global coverage, hotspots revisited, etc. However, due to the strict size limitation, the high-accuracy measuring instruments such as star tracker are too large to be applied in ...
Zheng You, Fei Xing, Xinyuan Liu
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Optical System Error Analysis and Calibration Method of High-Accuracy Star Trackers
Sensors, 2013 The star tracker is a high-accuracy attitude measurement device widely used in spacecraft. Its performance depends largely on the precision of the optical system parameters.
Zheng You, Fei Xing
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Ground Testing Strategies for Verifying the Slew Rate Tolerance of Star Trackers
Sensors, 2014 The performance of a star tracker is largely based on the availability of its attitude solution. Several methods exist to assess star tracker availability under both static and dynamic imaging conditions.
John Enright
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Exposure Time Optimization for Highly Dynamic Star Trackers
Sensors, 2014 Under highly dynamic conditions, the star-spots on the image sensor of a star tracker move across many pixels during the exposure time, which will reduce star detection sensitivity and increase star location errors.
Jian Li, Xinguo Wei, Wei Tan
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Space Debris Detection and Positioning Technology Based on Multiple Star Trackers
Applied Sciences (Switzerland), 2022 This paper focuses on the opportunity to use multiple star trackers to help space situational awareness and space surveillance. Catalogs of space debris around Earth are usually based on ground-based measurements, which rely on data provided by ground ...
Hu Wang, Meiying Liu, Yaoke Xue
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Improved Triangular-Based Star Pattern Recognition Algorithm for Low-Cost Star Trackers
Journal of King Saud University - Computer and Information Sciences, 2021 Star identification algorithms based on triangular-pattern are more suitable for low-cost star trackers since they require less star density in the field of view to operate effectively.
Zoubir Ahmed-Foitih, Abderrahim Nabi
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Star Trackers for Attitude Determination [PDF]
IEEE Aerospace and Electronic Systems Magazine, 1995 One problem comes to all spacecrafts using vector information. That is the problem of determining the attitude. This paper describes how the area of attitude determination instruments has evolved from simple pointing devices into the latest technology, which determines the attitude by utilizing a CCD camera and a powerful microcomputer. The instruments
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DETECTION OF THE ANGLE CHANGE BETWEEN CAMERA AND STAR TRACKER BASED ON STAR OBSERVATION [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Satellites in orbit are affected by changes in thermal environment and other factors, and the angle of optical axis between the camera and star tracker (Cam-ST) changes.
Z. Guan +6 more
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