Results 161 to 170 of about 1,728 (284)
On Random and Systematic Errors of a Star Tracker
, 2013 The error of the attitude of many modern star trackers is determined by systematic errors. In this paper we consider the effect of random and different systematic errors of sensors on the attitude accuracy of star trackers.
Prokhorov, Mikhail +4 more
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Arthritis Care &Research, EarlyView.Systemic sclerosis (SSc) is a rare autoimmune disease defined by immune dysregulation, vasculopathy, and progressive fibrosis of the skin and internal organs. Despite advances in care, major complications such as interstitial lung disease (ILD) and myocardial involvement remain the leading causes of morbidity and mortality.
Cristiana Sieiro Santos +2 more
wiley +1 more source
Operational Experience with Autonomous Star Trackers on ESA Interplanetary Spacecraft
, 2007 Mars Express (MEX), Rosetta and Venus Express (VEX) are ESA interplanetary spacecrafts (S/C) launched in June 2003, March 2004 and November 2005, respectively.
Kielbassa, Sabine +2 more
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Arthritis Care &Research, EarlyView.Over the past 50 years, the science of pediatric rheumatology has grown exponentially due to an expansion in the understanding of complex rheumatic conditions and a surge in novel targeted therapeutics. Physician‐scientists in the field of pediatric rheumatology have played major roles in these advancements that have improved the care of children ...
Ekemini A. Ogbu +2 more
wiley +1 more source
A Dual-Purpose Camera for Attitude Determination and Resident Space Object Detection on a Stratospheric Balloon. [PDF]
Sensors (Basel), 2023 Chianelli G +3 more
europepmc +1 more source
Safe and sustained access to space is increasingly being threatened by the growing number of satellite launches and large amounts of space debris. Having the ability to detect and track these Resident Space Objects (RSOs) is crucial to predict and avoid ...
Guinane, Julian
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Abstract This master’s thesis aims to advance in the area of star tracking platform through the development and testing of hardware for a star tracker prototype. A comprehensive study of the components that make up the star tracker sensor was undertaken, analyzing typologies and materials available on the market is carried out, including sensors ...
openaire +1 more source
Arthritis Care &Research, EarlyView.Objective This study aims to investigate lifestyle‐related factors in patients with psoriatic arthritis (PsA) and their association with disease activity measurements. Methods This multicenter cohort included 938 patients who were newly diagnosed with PsA between 2013 and 2023.
Batoul Hojeij +11 more
wiley +1 more source
Adaptation of star catalogues for their application in star trackers
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2018 G.A. Avanesov +4 more
openaire +1 more source
A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems
International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam +2 more
wiley +1 more source