Next Article in Journal
Spectral Sharpening of Color Sensors: Diagonal Color Constancy and Beyond
Previous Article in Journal
On the Use of Low-Cost Radar Networks for Collision Warning Systems Aboard Dumpers
Sensors 2014, 14(3), 3939-3964; doi:10.3390/s140303939
Article

Ground Testing Strategies for Verifying the Slew Rate Tolerance of Star Trackers

*  and
Received: 10 January 2014; in revised form: 11 February 2014 / Accepted: 14 February 2014 / Published: 26 February 2014
(This article belongs to the Section Remote Sensors)
View Full-Text   |   Download PDF [1184 KB, uploaded 21 June 2014]   |   Browse Figures
Abstract: 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. However, these methods typically make various idealizations that can limit the accuracy of these results. This study aims to increase the fidelity of star tracker availability modeling by accounting for the effects of detection logic and pixel saturation on star detection. We achieve this by developing an analytical model for the focal plane intensity distribution of a star in the presence of sensor slew. Using the developed model, we examine the effects of slew rate on star detection using simulations and lab tests. The developed approach allows us to determine the maximum slew rate for which a star of a given stellar magnitude can still be detected. This information can then be used to describe the availability of a star tracker attitude solution as a function of slew rate, both spatially, across the entire celestial sphere, or locally, along a specified orientation track.
Keywords: star trackers; slew tolerance; attitude availability; star detection; attitude determination star trackers; slew tolerance; attitude availability; star detection; attitude determination
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Dzamba, T.; Enright, J. Ground Testing Strategies for Verifying the Slew Rate Tolerance of Star Trackers. Sensors 2014, 14, 3939-3964.

AMA Style

Dzamba T, Enright J. Ground Testing Strategies for Verifying the Slew Rate Tolerance of Star Trackers. Sensors. 2014; 14(3):3939-3964.

Chicago/Turabian Style

Dzamba, Tom; Enright, John. 2014. "Ground Testing Strategies for Verifying the Slew Rate Tolerance of Star Trackers." Sensors 14, no. 3: 3939-3964.


Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert