Bilal Ahmad Alvi

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This paper presents a robust controller design for attitude determination and control of small satellite which is the most important part for precise positioning and orientation of a satellite in the orbit. The position and orientation of a satellite is determined using three different sensors namely sun sensor, magnetometer and rate gyro. In order to(More)
Extreme Learning Machine (ELM) is a<lb>recently introduced learning algorithm for single hidden-<lb>layer feedforward neural network. Compared with<lb>classical learning algorithms in neural network, e.g. Back<lb>Propagation, ELM can achieve better performance with<lb>much shorter learning time. In the existing literature, its<lb>better performance and(More)
One of the most important components of attitude determination system for small satellite is sun sensor. In this paper design, development and calibration of 2-axis digital sun sensor using linear Photodiodes array is presented. Senor design comprises two linear arrays mounted orthogonally to provide Sun aspect angle in two axes. The Sun aspect angle is(More)
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