Microlevelling of Aeromagnetic Data using the Naudy-Fuller Space Domain Filter
Saad Mogren, J. D. Fairhead, S. Z. Jassim · 2009
Microlevelling or decorrugation methods used to remove line-to-line levelling errors of aeromagnetic data which are visible as linear anomalies parallel to the flight lines are explained in this study showing the advantages of using the Naudy-Fuller space domain filter. In this study three methods of microlevelling were tested, the first is microlevelling using Bi-directional line gridding, the second using FFT frequency domain procedures which is based on a directional cosine filter and Butterworth filters, and the third, and most preferable by the authors, is a combination of Naudy non-linear filter and the Fuller Hanned band pass convolution filter, that works in the space domain.