Describe the function of Altitude Control Subsystem in Satellite for keeping satellite in its orbit.

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teamques10 ★ 70k

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The attitude of a satellite refers to its orientation in space. Attitude control of a satellite refers to the maintenance of the satellite stability at its assigned position. Attitude control is necessary to keep the antenna pointed towards the desired region on the surface of the earth. It is also used to help solar cells so that they face the sun.
A satellite maintains the desired orientation and orbital position through its attitude control subsystem. The attitude control subsystem must continue to perform all functions reliably throughout its lifetime because the loss of satellite attitude renders a spacecraft useless.
Satellites once placed in its orbit experience a number of forces due to gravitational fields of the earth and the moon, solar radiation pressure, magnetic field interaction and meteorite impacts.
Altitude control must not be confused with station keeping, which is the term used for maintaining a satellite in its correct orbital position.
The two commonly employed stabilizing techniques for the satellite attitude are:

a) Spin Stabilization b) 3 – axis or Body Stabilization

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