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Open AccessArticle

Theoretical Limits of Star Sensor Accuracy

1
Divisão de Eletrônica Aeroespacial (DIDEA), National Institute for Space Research (INPE), Av. dos Astronautas, 1758, São José dos Campos, SP 12227, Brazil
2
Aerospace Engineering, Texas A&M University, College Station, TX 77843, USA
*
Author to whom correspondence should be addressed.
This paper is a revised and extended version of a work previously published as a doctoral thesis chapter.
Sensors 2019, 19(24), 5355; https://doi.org/10.3390/s19245355
Received: 17 October 2019 / Revised: 25 November 2019 / Accepted: 25 November 2019 / Published: 5 December 2019
(This article belongs to the Special Issue Attitude Sensors)
To achieve mass, power and cost reduction, there is a trend to reduce the volume of many instruments aboard spacecraft, especially for small spacecraft (cubesats or nanosats) with very limited mass, volume and power budgets. With the current trend of miniaturizing spacecraft instruments one could naturally ask if is there a physical limit to this process for star sensors. This paper shows that there is a fundamental limit on star sensor accuracy, which depends on stellar distribution, star sensor dimensions and exposure time. An estimate of this limit is given for our location in the galaxy. View Full-Text
Keywords: star sensors; stellar distribution; photometry; astrometry; star catalogs; fundamental limits star sensors; stellar distribution; photometry; astrometry; star catalogs; fundamental limits
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MDPI and ACS Style

Fialho, M.A.A.; Mortari, D. Theoretical Limits of Star Sensor Accuracy. Sensors 2019, 19, 5355. https://doi.org/10.3390/s19245355

AMA Style

Fialho MAA, Mortari D. Theoretical Limits of Star Sensor Accuracy. Sensors. 2019; 19(24):5355. https://doi.org/10.3390/s19245355

Chicago/Turabian Style

Fialho, Marcio A.A.; Mortari, Daniele. 2019. "Theoretical Limits of Star Sensor Accuracy" Sensors 19, no. 24: 5355. https://doi.org/10.3390/s19245355

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