Results 31 to 40 of about 615,181 (292)

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

Resisting tracker attacks by query terms analysis [PDF]

open access: yes, 2010
Tracker attacks pose a serious threat to databases, especially those used in manufactory and management in industry. These attacks can be used to infer sensitive information in databases and they are difficult to detect.
Ma, X, Xiao Qi Ma
core   +1 more source

The CMS Tracker operation and performance at the Magnet Test and Cosmic Challenge [PDF]

open access: yes, 2008
During summer 2006 a fraction of the CMS silicon strip tracker was operated in a comprehensive slice test called the Magnet Test and Cosmic Challenge (MTCC).
Broccolo, B.   +999 more
core   +1 more source

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 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

Correction of rotational blur in images of stars observed by an astroinertial attitude sensor against the background of the daytime sky

open access: yesКомпьютерная оптика, 2023
A rotational blur correction algorithm is considered as the initial stage of image processing in the problem of attitude measurement using a star tracker. To implement this algorithm, the star tracker must be equipped with a three-axis gyroscope.
N.N. Vasilyuk
doaj   +1 more source

Astronomy: Star tracker [PDF]

open access: yesNature, 2013
As an early adopter of astronomical technology, Andrea Ghez is revealing secrets about the giant black hole at the Galaxy's centre.
openaire   +1 more source

STAR forward detector upgrade status and performance [PDF]

open access: yesEPJ Web of Conferences
An upgrade to the STAR detector system at forward rapidities has been completed before the RHIC RUN 2022. It consists of the Forward Tracking System (FTS) and the Forward Calorimeter System (FCS).
Wang Zhen
doaj   +1 more source

Feasibility study of space-based debris detection using star tracker images

open access: yes, 2022
LAUREA MAGISTRALEI detriti spaziali sono una minaccia per i veicoli spaziali in orbita attorno alla Terra a causa del rischio di una collsione che potrebbe danneggiare o distruggere un satellite attivo. Dato che i detriti più piccoli non sono catalogati
MASCETTI, STEFANO
core  

Selection of Design Parameters in Optical System of Star Tracker for a Satellite [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1999
In order to develop star trackers for a satellite in our country we studied selection procedure of optical parameters. For logical selection of the optical parameters, we simulated the entire processes in which star lights imaged on a CCD sensor were ...
Ja-Kyung Nah, Yong Ha Kim, Yu Yi
doaj  

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