MicroLevel is a Windows program for the decorrugation of gridded airborne magnetic and gamma-ray spectrometric data. It provides all the tools required to remove subtle lineations in the flight line direction from the gridded data. The levelling corrections can then be applied to line data in an Intrepid database (microlevelling). Polygons can be used to exclude areas of the grid from decorrugation.

The program comes with Help tutorials, and demonstration magnetic and radiometric grids. So you can learn to use MicroLevel without having your own grids. 

The program operates on ER Mapper (.ers) grids.