Results 21 to 30 of about 635,631 (297)

Intelligent Star Tracker

open access: yesProceedings of the 43rd IEEE Midwest Symposium on Circuits and Systems (Cat.No.CH37144), 2002
Describes the Intelligent Star Tracker System. The Intelligent Star Tracker System incorporates an adaptive optic catadioptric telescope in a silicon carbide housing. Leveraging off of the active optic technologies, the novel active pixel position sensors (APPS) enable wide dynamic range and allow simultaneous imagery of faint and bright stars in a ...
N. Clark, P. Furth
openaire   +3 more sources

Neural Network Calibration of Star Trackers

open access: yesIEEE Transactions on Instrumentation and Measurement, 2022
<p>To maintain ideal performance, star trackers must be able to predict the direction of incident starlight to within a few arcseconds across the entire instrument field of view (FOV). Parametric camera models are commonly used to calculate star vectors from camera images and correct for aberrations in the instrument optics.
Shaghayegh Khodabakhshian, John Enright
openaire   +1 more source

Research and apply of the quality of star image for star tracker [PDF]

open access: yesZhihui kongzhi yu fangzhen
In recent years,with the development of commercial spaceflight, the requirements of the production quality for star tracker in commercial satellite become higher and higher.
SHEN Yuteng, ZHANG Chi
doaj   +1 more source

A SLIC-DBSCAN Based Algorithm for Extracting Effective Sky Region from a Single Star Image

open access: yesSensors, 2021
The star tracker is widely used for high-accuracy missions due to its high accuracy position high autonomy and low power consumption. On the other hand, the ability of interference suppression of the star tracker has always been a hot issue of concern. A
Chenguang Shi   +4 more
doaj   +1 more source

Reconfigurable Hardware-in-the-Loop Test Bench for the SHEFEX2 Hybrid Navigation System Experiment [PDF]

open access: yes, 2011
The Hybrid Navigation System is being developed to achieve the required attitude accuracy and calculate a navigation solution for the SHEFEX2 mission, which will be launched in February 2012 from And\o ya Rocket Range in Norway by the German Aerospace ...
Steffes, Stephen R.   +7 more
core   +1 more source

A heavy flavor tracker for STAR [PDF]

open access: yesNuclear Physics A, 2006
proceedings of the Quark Matter 2005 Conference, Budapest, Hungary; to appear in Nucl. Phys.
openaire   +2 more sources

The forward GEM tracker of STAR at RHIC [PDF]

open access: yes2008 IEEE Nuclear Science Symposium Conference Record, 2008
3 pages, 4 figures, submitted to the Conference Record of the IEEE NSS 2008, Dresden ...
Simon, F.   +13 more
openaire   +2 more sources

Star Catalog Criteria Selection and Mission Catalog Update for a Typical Star Tracker [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2013
Star tracker is an attitude determination device which determines the satellite or spacecraft’s attitude using the star position information in inertial and body references. Star information is collected and stored onboard as a “Star or mission catalog”.
Jafar Roshanian   +3 more
doaj  

An Integrated Tracker for STAR [PDF]

open access: yesAIP Conference Proceedings, 2006
The STAR experiment at the Relativistic Heavy Ion Collider RHIC studies the new state of matter produced in relativistic heavy ion collisions and the spin structure of the nucleon in collisions of polarized protons. In order to improve the capabilities for heavy flavor measurements and the reconstruction of charged vector bosons an upgrade of the ...
openaire   +2 more sources

An Evaluation of Low-Cost Vision Processors for Efficient Star Identification

open access: yesSensors, 2020
Star trackers are navigation sensors that are used for attitude determination of a satellite relative to certain stars. A star tracker is required to be accurate and also consume as little power as possible in order to be used in small satellites.
Surabhi Agarwal   +5 more
doaj   +1 more source

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