Contents

1. Reference Vector Models

   1.1. Model of magnetic filed around earth(IGRF)

   1.2. Sun Vector Model

2. Sensor Models (Body Vector)

   2.1. Magnetometer Model

   2.2. Sun Sensor Model

3. Optimised TRIAD Attitude Determination Algorithm

4. J2 Orbit Propagator

5. Attitude Propagator

6. VRML object for visualisation