New algorithm for attitude and orbit determination using magnetic field measurements

Abdelrahman, Mohammad (2015) New algorithm for attitude and orbit determination using magnetic field measurements. In: The 25th AAS/AIAA Space Flight Mechanics Meeting, 11th-15th January 2015, Williamsburg, USA.

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Abstract

A generalized algorithm for a Combined Nonlinear Control and Estimation CNCE process for spacecraft attitude and orbit determination and control is pre-sented. The approach tends to eliminate the delays due to the separation be-tween the estimation and control processes. Also, it minimizes the possibility of control degradation due to estimator divergence and instabilities. In addition, it enhances the convergence and accuracy of the estimation and control as a result of the coupling and synchronization of the both processes in the combined ap-proach. The approach is implemented using a Modified State–Dependent Riccati Equation MSDRE scheme in optimal nonlinear estimation and control. The al-gorithm is applied to a spacecraft in low Earth orbit utilizing magnetic meas-urements and actuation only. The algorithm successfully satisfied the mission requirements in attitude and rate estimation and in pointing accuracy. Also, it has been applied to orbit determination and has shown fast convergence with enhanced accuracy

Item Type:	Conference or Workshop Item (UNSPECIFIED)
Additional Information:	6540/41652
Uncontrolled Keywords:	New algorithm, attitude, orbit
Subjects:	T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL787 Astronautics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr. Mohammad Abdelrahman
Date Deposited:	01 Apr 2015 11:20
Last Modified:	24 May 2016 09:08
URI:	http://irep.iium.edu.my/id/eprint/41652

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