The Applicability of Two-dimensional Inversion Filters in Magnetic Prospecting for Buried Antiquities

Abstract

Inversion filters can be computed on the basis that a particular signal can be considered as the convolutant of two distinct and analytically determined functions. Therefore, if such filters are convolved with the measured field, they provide the distribution of the function which was not inverted. If the non-inverted function has been chosen in a manner to define the surface projection of the buried target, a plan view of the subsurface conditions has been provided.

The vertical sided prism is justified as the model which resembles the majority of the expected structures in an Archaeological site. Hence, the effect which that produces forms the signal upon which manipulations are done. Several filters are presented which were computed on that basis.

Applications on synthetic and actual data are presented in order to clarify the merits and disadvantages of the technique.