Attitude Determination of Micro-Satellite Using Geomagnetism and Magnetometer Data

Geomagnetic data from 3-axis magnetometer and the IGRF model (tilted-eccentric dipole model) were used to determine the attitude of a satellite. We compared the values of the geomagnetic model with the magnetometer data and two attitude angles, called α-angle and β-angle respectively, were calculated. From these angles we calculated simple bounds, γ1 and γ2, on the true attitude angle γ, which is used to detemine attitude, between the z-axis and the local vertical. And then we investigated conditions of attitudes of UoSAT-11, 14, 22