Changes

The tracked sensor signal and emitter current sense signals are both superpositions of eight frequency components, with each component due to a single emitter coil. Synchronous demodulation in software allows the magnitude and phase of each frequency component to be measured.

The magnitude and phase information of each frequency components is fed into the position and orientation algorithm. The algorithm's minimisation process yields the position and orientation of the tracking sensor in space as a 5 degree of freedom vector: <math>[x,y,z,\theta,\varphi]</math>