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Protection Scheme for Star Tracker Images
IEEE Transactions on Aerospace and Electronic Systems, 2019Radiation effects in star trackers can cause malfunctions that may lead to the loss of communication with the satellite. This paper presents a scheme to protect star tracker images stored in memory against single event upsets (SEUs). Fault injection and resource utilization reports show that, with the protection technique, 99.98% of the SEUs can be ...
Luis Alberto Aranda +3 more
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Autonomous Star Tracker Development
IFAC Proceedings Volumes, 1992Abstract The attitude control, pointing control, and navigation systems of future advanced spacecraft will be characterized by a high degree of autonomy, very high accuracy, efficient commandability, and fast fault recovery. These characteristics are incompatible with the constraints of conventional star trackers which mandate a-priori definition and
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Generation of Guide Star Catalog for Star Trackers
IEEE Sensors Journal, 2018In this paper, a novel guide star catalog generation algorithm is presented, which is a crucial part of an advanced star tracker design since the performance and reliability of star identification and attitude determination depend on the guide star selection.
Jian Li, Gangyi Wang, Xinguo Wei
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Star tracker for mobile applications
2016 IEEE International Conference on the Science of Electrical Engineering (ICSEE), 2016This paper presents a star tracking algorithm to determine the orientation of aircrafts, spacecrafts and automobiles. Such tracking is especially challenging since it requires robustness and should work continuously and autonomously. A wider view of this problem is utilizing the algorithm on automobiles and aircrafts and predict the device's ...
Revital Marbel +2 more
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Distortion model for star tracker
SPIE Proceedings, 2010In order to provide the beneficial expression of lens distortion for star trackers, the numerical results of the grid distortions of four typical star tracker lens systems have been investigated, and then data fitting is done with combined multinomial of different number of terms and powers of radial radius.
Hai-bo Liu +6 more
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The STAR Heavy Flavour Tracker
Journal of Physics G: Nuclear and Particle Physics, 2007In order to understand the partonic EOS of matter created at RHIC, one needs to study both the collectivity of the produced matter and the degree of thermalization. We propose to address this physics through the study of heavy flavour hadrons in high-energy nuclear collisions at RHIC.
A Rose, the STAR Collaboration
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A self calibrating star tracker system
2016 24th Signal Processing and Communication Application Conference (SIU), 2016Star trackers are optical devices that estimate their attitude by capturing sky images and identifying the observed stars through the use of pattern recognition algorithms and a star catalog. For a high-accuracy attitude estimation, intrinsic parameters need to be found to a high accuracy as well.
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A Systems Approach to Star Trackers
IEEE Transactions on Aerospace and Navigational Electronics, 1963A signal processing analysis of star trackers for navigation and guidance was conducted as a part of the Star Tracker Aerospace Reference Study. The signal processing analysis is based on the similarity between communication system theory and the several types of star trackers.
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The PoGOLite star tracker system
2008 IEEE Nuclear Science Symposium Conference Record, 2008PoGOLite is a balloon-borne experiment which will study polarised soft gamma-ray emission from astrophysical targets in the 25keV – 80keV energy range by applying well-type phoswich detector technology [1]. Polarised gamma-rays are expected from a wide variety of sources including rotation-powered pulsars, accreting black holes and neutron stars, and ...
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SPIE Proceedings, 2003
Two redundant AST-301 autonomous star trackers (AST) serve as the primary attitude sensors for JPL's space infrared telescope facility (SIRTF). These units, which employ a 1553B interface to output their attitude quaternions and uncertainty at a 2 Hz rate, provide a 1 σaccuracy of better than 0.18, 0.18, and 5.1 arcsec about their X, Y, and Z axes ...
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Two redundant AST-301 autonomous star trackers (AST) serve as the primary attitude sensors for JPL's space infrared telescope facility (SIRTF). These units, which employ a 1553B interface to output their attitude quaternions and uncertainty at a 2 Hz rate, provide a 1 σaccuracy of better than 0.18, 0.18, and 5.1 arcsec about their X, Y, and Z axes ...
openaire +1 more source