Results 21 to 30 of about 2,173,291 (371)

Star-Tracker Algorithm for Smartphones and Commercial Micro-Drones [PDF]

open access: yesSensors, 2020
This paper presents a star-tracking algorithm to determine the accurate global orientation of autonomous platforms such as nano satellites, U A V s, and micro-drones using commercial-off-the-shelf ( C O T S ) mobile devices such as ...
Revital Marbel   +2 more
doaj   +2 more sources

The MONS Star Trackers [PDF]

open access: green, 2000
The MONS satellite will have two Star Trackers to sense the spacecraft attitude, and we plan to use them as scientific instruments to perform high-precision photometry of thousands of stars. We briefly describe the current plans for the Star Trackers and their expected capabilities.
T. R. Bedding, H. Kjeldsen
openalex   +3 more sources

Optical System Error Analysis and Calibration Method of High-Accuracy Star Trackers

open access: yesSensors, 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

Toward a Fault-Tolerant Star Tracker for Small Satellite Applications

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2020
Star trackers are autonomous, high-accuracy electronic systems used to determine the attitude of a spacecraft. In recent years, commercial-off-the-shelf (COTS)-based star trackers are growing in importance for low-cost and short-duration missions, but ...
Luis Alberto Aranda   +2 more
semanticscholar   +3 more sources

A Brightness-Referenced Star Identification Algorithm for APS Star Trackers [PDF]

open access: yesSensors, 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   +3 more
doaj   +3 more sources

Novel approach to improve the attitude update rate of a star tracker.

open access: yesOptics Express, 2018
The star tracker is widely used in attitude control systems of spacecraft for attitude measurement. The attitude update rate of a star tracker is important to guarantee the attitude control performance.
Shuo Zhang   +4 more
semanticscholar   +3 more sources

A Survey on Star Identification Algorithms

open access: yesAlgorithms, 2009
The author surveys algorithms used in star identification, commonly used in star trackers to determine the attitude of a spacecraft. Star trackers are a staple of attitude determination systems for most types of satellites.
Daniele Mortari, Benjamin B. Spratling
doaj   +3 more sources

The STAR Heavy Flavor Tracker (HFT).

open access: green, 2014
Contribution to ...
Joachim Schambach   +5 more
openalex   +4 more sources

Modeling of intensified high dynamic star tracker

open access: yesOptics Express, 2017
An intensified high dynamic star tracker (IHDST) is a photoelectric instrument and stably outputs three-axis attitude for a spacecraft at very high angular velocity. The IHDST uses an image intensifier to multiply the incident starlight. Thus, high sensitivity of the star detection is achieved under short exposure time such that extremely high dynamic ...
Jinyun, Yan, Jie, Jiang, Guangjun, Zhang
openaire   +3 more sources

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