Results 341 to 350 of about 2,173,291 (371)
Some of the next articles are maybe not open access.
High Accuracy Sodern Star Trackers: Recent Improvements Proposed on SED36 and HYDRA Star Trackers
AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006In the frame of the SED36 development dedicated to the Pleiades satellite, a particular effort has been brought to reduce significantly the low frequency error of the Star Tracker, which design was based on the flight qualified SED_6 product line. Indeed, among the error classes of a Star Tracker, the bias can be in-flight calibrated, and the noise is ...
Ludovic Blarre +3 more
openaire +1 more source
Star spot location estimation using Kalman filter for star tracker
Applied Optics, 2011Star pattern recognition and attitude determination accuracy is highly dependent on star spot location accuracy for the star tracker. A star spot location estimation approach with the Kalman filter for a star tracker has been proposed, which consists of three steps.
Hai-bo, Liu +4 more
openaire +2 more sources
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2010
Abstract The STAR collaboration is preparing a forward tracking detector upgrade, the Forward GEM Tracker (FGT), to provide fundamental studies of the proton spin structure and dynamics in high-energy polarized proton–proton collisions at RHIC at BNL.
openaire +1 more source
Abstract The STAR collaboration is preparing a forward tracking detector upgrade, the Forward GEM Tracker (FGT), to provide fundamental studies of the proton spin structure and dynamics in high-energy polarized proton–proton collisions at RHIC at BNL.
openaire +1 more source
The PoGOLite star tracker system
2008 IEEE Nuclear Science Symposium Conference Record, 2008PoGOLite is a balloon-borne experiment which will study polarised soft gamma-ray emission from astrophysical targets in the 25keV – 80keV energy range by applying well-type phoswich detector technology [1]. Polarised gamma-rays are expected from a wide variety of sources including rotation-powered pulsars, accreting black holes and neutron stars, and ...
openaire +1 more source
From Two-Star Instruments to Modern Star Trackers
Journal of Navigation, 1977For a long while now positions on the surface of the Earth have been fixed by observing the altitudes of two heavenly bodies. The equations:include on their left-hand side two observed zenith distances and on their right-hand sides the required values of latitude and longitude. The history of celestial navigation records many different solutions to the
openaire +1 more source
Improved Star Tracker Calibration Observability
AIAA/AAS Astrodynamics Specialist Conference, 2014Ilija Jovanovic +2 more
openaire +1 more source
Low-budget CubeSat star tracker calibration using Earth’s rotation
Advances in Space Research, 2022Hyosang Yoon, Junsung Wi
exaly
Spacecraft angular velocity estimation algorithm for star tracker based on optical flow techniques
, 2018Yujie Tang, Jian Li, Gangyi Wang
semanticscholar +1 more source