Results 1 to 10 of about 2,812 (306)

Consensus SE(3)-Constrained Extended Kalman Filter for Close Proximity Orbital Relative Pose Estimation

Aerospace
In this paper, a recently proposed SE(3)-constrained extended Kalman filter (EKF) is extended to formulate a strategy for relative orbit estimation in a space-based sensor network. The resulting consensus SE(3)-constrained EKF utilizes space-based sensor
S. Mathavaraj, Eric A. Butcher
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Decentralized State Estimation Algorithm of Centralized Equivalent Precision for Formation Flying Spacecrafts Based on Junction Tree

International Journal of Aerospace Engineering, 2015
As centralized state estimation algorithms for formation flying spacecraft would suffer from high computational burdens when the scale of the formation increases, it is necessary to develop decentralized algorithms.
Mengyuan Dai, Hua Mu, Meiping Wu, Zhiwen Xian   +3 more
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Antenna Configuration Method for RF Measurement Based on DOPs in Satellite Formation Flying

International Journal of Aerospace Engineering, 2018
Radio frequency (RF) measurement technology provides a relative navigation solution that can be of great importance to have significant potential for application to the satellite groups.
Weiqing Mu, Rongke Liu, Zijie Wang, Yukai Liu   +3 more
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Study on maintaining formations during satellite formation flying based on SDRE and LQR

Open Physics, 2017
Due to the influence of various perturbations of space, satellites flying in formation cannot maintain specific configurations for long durations [1, 2]. In order to ensure that formation configurations are able to meet the requirements of space missions,
Ke Zhang, Zhenqi He, Meibo Lv
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A Single-Use Microthruster Concept for Small Satellite Attitude Control in Formation-Flying Applications

Aerospace, 2018
In recent years, the maturation of small satellite technology has led to their adoption for a variety of space missions. The next generation of small satellite missions, however, will likely have the satellites operating in formations or “constellations”
Sandra Romero-Diez, Lydia Hantsche, Jason M. Pearl, Darren L. Hitt, M. Ryan McDevitt, Patrick C. Lee   +5 more
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ESTABLISHMENT OF SATELLITE FORMATION WITH INITIAL UNCERTAINTY BY CONTROL LYAPUNOV FUNCTION APPROACH DOI 10.5028/jatm.2012.04014511

Journal of Aerospace Technology and Management, 2012
In recent years, dynamics and control of satellite formation flying have been active areas of research. From the mission planning perspective, three main areas namely formation establishment, maintenance and reconfiguration have been discussed.
M Navabi, M Barati, Hossein Bonyan Khamseh   +2 more
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Low magnetic disturbance analysis and testing of a novel proof mass type for gravitational reference sensor system

Advances in Mechanical Engineering, 2019
The proof mass used for gravitational-wave or Earth-gravity-field detection is usually comprised of materials such as gold–platinum alloys, which have a high density and low magnetic susceptibility, in order to reduce the magnetic disturbance produced by
Zeyang Zhao, Zhaokui Wang, Yulin Zhang
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The Influence of J2 on Formation Flying of Micro-Satellites in Low Near Equatorial Orbits

Journal of Advances in Information Technology, 2014
Taking into considerations the effect of the Earth’s oblateness parameters, particularly J2, the present work assess such influence on the formation flight of micro satellites in near equatorial low orbits. The modified Clohessy-Wiltshire equations
Harijono Djojodihardjo
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Real-Time Relative Baseline Determination of Low-Earth-Orbit Satellites with GPS/BDS Uncombined Single-Difference Method

Aerospace
Onboard GNSS-based relative baseline determination has emerged as a primary solution for formation-flying satellites dedicated to mapping and remote sensing missions.
Ruwei Zhang, Xiaowei Shao, Genyou Liu, Mingzhe Li   +3 more
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Filtering Strategies for Relative Navigation in Lunar Scenarios Using LCNS

Aerospace
This paper investigates the performance of the forthcoming lunar navigation satellite systems for estimating not only the position of an onboard receiver in a lunar inertial reference frame but also, and with a consistent accuracy, the relative position ...
Marco Sabatini, Giovanni B. Palmerini
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