Noise analysis of a portable aeromagnetic surveying system using a hybrid UAV

A capable and light-weight aeromagnetic surveying system is invariably preferred because of its cost-effectiveness, low personnel risk, and so on. However, developing such a system requires a solid understanding of noise from the platform on which it is built - an unmanned aerial vehicle (UAV). Therefore, we investigate static and dynamic noise from a hybrid UAV. The static noise from the platform is discontinuous leading to the spiky 4th difference due to radio transmission and cultural noise in the vicinity, whereas the dynamic noise is mainly due to the attitude of the aircraft, which can be reduced by proper aeromagnetic compensation. Consequently, the high noise level requires some painstaking effort to improve the current design of the system, such as increasing the distance between the magnetic sensors and sources of interference.