Results 21 to 30 of about 4,489 (256)

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   +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

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

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

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   +1 more source

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

open access: yesSensors, 2014
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.
Tom Dzamba, John Enright
doaj   +1 more source

Exposure Time Optimization for Highly Dynamic Star Trackers

open access: yesSensors, 2014
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.
Xinguo Wei   +3 more
doaj   +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

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

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  

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