Star trackers for attitude determination
نویسندگان
چکیده
منابع مشابه
The Mons Star Trackers
There is clear scientific interest in using the photometry from a star tracker to observe variable stars. Despite the small aperture, the advantages of space (long observing periods and no atmospheric scintillation) make such a camera superior to ground-based telescopes for some applications. The only example so far has been the work by Buzasi et al. (2000 and these Proceedings), who are making...
متن کاملStar Pattern Recognition for Attitude Determination Using Genetic Algorithms
This paper presents a study using Genetic Algorithms (GA) to solve the star pattern recognition problem associated with star tracker attitude determination systems. Characteristics of the stars that are visible within the Field of View (FOV) of an imager are defined with regard to relative distances and angles. The proposed GA minimizes the discrepancy between the characteristics of the stars i...
متن کاملA Brightness-Referenced Star Identification Algorithm for APS Star Trackers
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 range, the matching process for a star tracker is typically not very sensitive to star brightness. For active pixel sensor (APS) star trackers, the...
متن کاملa star identification algorithm based on a voting scheme for star trackers
star identification is one of the most important stages in attitude determination with star trackers. this can be performed using matching algorithms between observed stars and a master star catalogue. the main challenge in this approach is to provide a fast and reliable identification algorithm that is sufficiently robust in different pointing views of the star tracker optical system in the sp...
متن کاملExposure Time Optimization for Highly Dynamic Star Trackers
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. However, this kind of effect can be compensated well by setting an appropriate exposure time. This paper focuses on how exposure time affects the star tracker under highly dynamic c...
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ژورنال
عنوان ژورنال: IEEE Aerospace and Electronic Systems Magazine
سال: 1995
ISSN: 0885-8985
DOI: 10.1109/62.387971