نتایج جستجو برای: satellite attitude control system

تعداد نتایج: 3374226  

Journal: :Journal of Spacecraft and Rockets 1967

Journal: :Journal of Computer Science and Cybernetics 2012

Journal: :Journal of Systems Engineering and Electronics 2012

2002
Todd E. Humphreys Charles Swenson

This monograph reports on the development of the attitude determination backbone of the Ionospheric Observation Nanosatellite Formation (ION-F). Three spacecraft with similarly modest pointing constraints comprise the ION-F constellation. Pointing requirements for the constellation are dictated by the formation flying mission objective and communication demands. To satisfy pointing requirements...

2005
H.-P. Roeser F. Huber G. Grillmayer M. Lengowski S. Walz A. Falke T. Wegmann

The Flying Laptop is a micro-satellite currently under development by the Institute of Space Systems. Several promising technologies will be implemented. A high agile attitude control system with a pointing knowledge better than 7 arcseconds, operating in a target pointing mode for image acquisition is necessary to achieve the planned scientific measurements. For communication a high speed Ka-b...

2003
Renuganth Varatharajoo Stefanos Fasoulas

Small satellites for earth observation missions have received attention in the recent years for further optimisation. A potential approach would be to optimise the existing platforms in order to cope with their increasing mission requirements (e.g. mass, volume, etc.). In this article, the idea of combining the energy storage and attitude control systems is presented based on the flywheel techn...

2014
Firdaus E. Udwadia Thanapat Wanichanon Hancheol Cho

A two-step formation-keeping control methodology is proposed that includes both attitude and orbital control requirements in the presence of uncertainties. Based on a nominal systemmodel that provides the best assessment of the real-life uncertain environment, a nonlinear controller that satisfies the required attitude and orbital requirements is first developed. This controller allows the nonl...

Journal: :مهندسی برق مدرس 0
pedram hajipour 1phd student, department of communication, college of electrical engineering, yadegar-e-imam khomeini (rah) shahr-e-rey branch, islamic azad university, tehran, iran, ali shahzadi assistant professor, department of communication, college of electrical engineering, yadegar-e-imam khomeini (rah) shahr-e-rey branch, islamic azad university, tehran, iran,

in this paper, an interference management for multi-beam satellite network to enhance spectral efficiency is studied. first, a two-satellite for future generation satellite network using cognitive radio technology is provided.this network is composed of a secondary satellite and aprimary satellite where the primary satellite system does not suffer from severe destructive interferences coming fr...

Journal: :The International Journal of Multiphysics 2007

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