Algorithm for Determining the Angular Position of the Pilot’s Helmet to Control the on-Board Weapon’s Control System

Abstract

The following paper presents a method of determining the angular position of the pilot's helmet based on the measurement of magnetic field components, artificially generated on board the aircraft (similarly to the helmetmounted cueing systems of the F-16 aircraft). We presented a mathematical model, which describes determining of the angular position of the pilot's helmet, based on the measurement of the magnetic field components in various moments of powering orthogonally fixed magnetic coils. We also defined modelling capabilities of the helmet-mounted cueing system, which uses the magnetic method to determine the angular position of the pilot's helmet. It has been shown that the direction cosine matrix can be used for determining the angular position of the pilot's helmet, specified based on the matrix formed from the magnetic field components in various moments of powering orthogonal magnetic coils. The paper ends with an outline of simulation tests, which enable to identify the errors of the system, using such a method.