Results 21 to 30 of about 1,938 (262)

The Precision Validation of the Precise Baseline Determination for Satellite Formation [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
The needs for satellite formation flying are gradually increasing to perform the advanced space missions in remote sensing and observation of the space or Earth.
Jong-Yeoun Choi, Sang-Jeong Lee
doaj   +1 more source

THE CURRENT TASKS CONCERNING WITH CREATION AND DEORBITING OF THE FORMATION FLYING GROUPS FROM NANO- AND PICO- SATELLITES

open access: yesАвіаційно-космічна техніка та технологія, 2018
The purpose of the present paper is the analysis of current tasks concerning with creation and deorbiting of the formation flying groups consist of nano- and picosatellites and the consideration of the possibility of using permanent magnet devices for ...
Эрик Александрович Лапханов   +1 more
doaj   +1 more source

Orbital Maintenance of a Constellation of CubeSats for Internal Gravity Wave Tomography

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The advent of radio occultation (RO) instruments aboard CubeSats leads to the possibility of a mission to sound atmospheric internal gravity waves if such satellites are deployed in close-flying constellation.
Stephen Leroy   +4 more
doaj   +1 more source

Predefined-Performance-Based Full-Process Control for Ultra-Close and High-Precision Formation Flying

open access: yesAerospace, 2023
The prescribed performance robust control method for the leader/follower (L/F) formation is proposed in this paper to solve the problem of spacecraft formation flying (SFF) full-process control (FPC).
Xiande Wu   +4 more
doaj   +1 more source

Optimal design for a NEO tracking spacecraft formation [PDF]

open access: yes, 2007
The following paper presents the design and methodology for developing an optimal set of spacecraft orbits for a NEO tracking mission. The spacecraft is designed to fly in close formation with the asteroid, avoiding the nonlinear gravity field produced ...
Vasile, Massimiliano   +5 more
core   +1 more source

Multiple Spacecraft Formation Flying Control around Artificial Equilibrium Point Using Propellantless Approach

open access: yesInternational Journal of Aerospace Engineering, 2022
This paper demonstrates a detailed analysis of the feasibility for compact formation system around an L2-type artificial equilibrium point by means of continuous low-thrust propulsion in the hybrid form of solar sail and Coulomb force propulsion. Firstly,
Lei Zhao   +3 more
doaj   +1 more source

An analytical approach to analyzing spacecraft formation-flying motion [PDF]

open access: yes, 2002
An analytical approach to analyzing spacecraft formation-flying motion is proposed in this paper. Flight trajectory of spacecraft relative motion related to initial values is analytically described, and several mainly relative motion modes between ...
许滨, 张珩, Zhang ZM
core   +1 more source

Relative Navigation with Intermittent Laser-based Measurement for Spacecraft Formation Flying

open access: yesJournal of Astronomy and Space Sciences, 2018
This paper presents relative navigation using intermittent laser-based measurement data for spacecraft flying formation that consist of two spacecrafts; namely, chief and deputy spacecrafts. The measurement data consists of the relative distance measured
Jongwoo Lee   +2 more
doaj   +1 more source

Formation Flight in Low-Earth-Orbit at 150m Distance; AOCS In-Orbit Experience [PDF]

open access: yes, 2012
AOCS operations for two satellites flying at ~514 km altitude with unprecedented small separation of 150 m upwards pose various new challenges and require creative solutions.
Schulze, Daniel   +2 more
core   +1 more source

Research on Control Method of Keeping Flight Formation by Using SDRE on the Sun-Earth Libration Points

open access: yesAdvances in Astronomy, 2017
Keeping the flying formation of spacecraft is a key problem which needs to be solved in deep space exploration missions. In this paper, the nonlinear dynamic model of formation flying is established and a series of transformations are carried out on this
He Zhenqi, Zhang Ke, Lv Meibai
doaj   +1 more source

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