Results 1 to 10 of about 2,173,291 (371)
Dynamic imaging model and parameter optimization for a star tracker.
Optics Express, 2016 Under dynamic conditions, star spots move across the image plane of a star tracker and form a smeared star image. This smearing effect increases errors in star position estimation and degrades attitude accuracy.
Jinyun Yan, Jie Jiang, Guangjun Zhang
semanticscholar +1 more source
Focal Adjustment for Star Tracker
Defence Science Journal, 2010 Technique of measuring intensity distribution and size of spot image developed has been discussed, which is especially suitable for defocus adjustment in ground test of star tracker. A novel approach for choosing a proper defocusing position has been proposed based on collimator, Gaussian surface fitting method, and other ordinary instruments.
Liu Hai-bo +6 more
openaire +1 more source
Precision Pointing Control System (PPCS) star tracker test [PDF]
Tests performed on the TRW precision star tracker are described. The unit tested was a two-axis gimballed star tracker designed to provide star LOS data to an accuracy of 1 to 2 sec.
core +1 more source
Spacecraft attitude control systems with dynamic methods and structures for processing star tracker signals [PDF]
, 2001 Methods are provided for dynamically processing successively-generated star tracker data frames and associated valid flags to generate processed star tracker signals that have reduced noise and a probability greater than a selected probability P.sub ...
Li, Rongsheng +2 more
core +1 more source
Development of the Arcsecond Pico Star Tracker (APST)
, 2017 The second generation star tracker estimates pointing knowledge of the satellite without a-priori knowledge. But star trackers are larger in size, heavier, power hungry and expensive for nanosatellite missions.
Vishnu Anand Muruganandan +5 more
semanticscholar +1 more source
Multi-functional star tracker — future perspectives
Acta Polytechnica, 2011 This paper focuses on the idea of a multi-functional wide-field star tracker (WFST) and provides a description of the current state-of-the-art in this field. The idea comes from a proposal handed in to ESA at the beginning of 2011.
J. Roháč, M. Řeřábek, R. Hudec
doaj
Breadboard stellar tracker system test report, volume 1 [PDF]
The performance of a star tracker equipped with a focal plane detector was evaluated. The CID board is an array of 256 x 256 pixels which are 20 x 20 micrometers in dimension.
Hubbard, M. W. +3 more
core +1 more source
EPJ Web of Conferences, 2018 The Solenoidal Tracker at RHIC (STAR) experiment takes advantage of its excellent tracking and particle identification capabilities at mid-rapidity to explore the properties of strongly interacting QCD matter created in heavy-ion collisions at RHIC.
Zha Wangmei
doaj +1 more source
Dual-Purpose Star Tracker and Space Debris Detector: Miniature Instrument for Small Satellites
Journal of Sensor and Actuator NetworksThis paper presents the conception, design and real miniature instrument implementation of a dual-purpose sensor for small satellites that can act as a star tracker and space debris detector. In the previous research work, the authors conceived, designed
Beltran N. Arribas +8 more
doaj +1 more source
Long-life 3-axis satellite attitude sensing, phase 1 [PDF]
The purpose was to investigate the feasibility of new, moderate-cost, high reliability navigation sensors for high-altitude satellites, using stellar sources to obviate the use of gyroscopic devices.
Arild, Tor
core +1 more source