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, Jingnan Liu
exaly +8 more sources
Fast Star Matching Method Based on Double K-Vector Lookup Tables for Multi-Exposure Star Trackers [PDF]
Sensors, 2021 A high update rate is always one of the vital indices of star trackers. By recording star positions at N moments within a single star image, the multi-exposure imaging approach (MEIA) proposed in an earlier study can improve the attitude update rate of ...
Wenbo Yu +4 more
doaj +3 more sources
Exposure Time Optimization for Highly Dynamic Star Trackers [PDF]
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.
Xinguo Wei +3 more
doaj +3 more sources
Reducing Systematic Centroid Errors Induced by Fiber Optic Faceplates in Intensified High-Accuracy Star Trackers [PDF]
Sensors, 2015 Compared with traditional star trackers, intensified high-accuracy star trackers equipped with an image intensifier exhibit overwhelmingly superior dynamic performance.
Kun Xiong, Jie Jiang
doaj +3 more sources
Ground Testing Strategies for Verifying the Slew Rate Tolerance of Star Trackers [PDF]
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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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, Desheng Wen
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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 ...
C C Liebe
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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
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Optical System Error Analysis and Calibration Method of High-Accuracy Star Trackers [PDF]
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, Ting Sun
doaj +3 more sources
Autonomous Recalibration of Star Trackers [PDF]
IEEE Sensors Journal, 2023 Star trackers must be calibrated prior to flight so that they can make accurate measurements of star positions within the instrument field of view. This calibration is usually performed in atmosphere and after the sensor is launched; it is not uncommon ...
Brendon Vaz (10855173) +2 more
core +2 more sources