Measured Anomaly can be defined as anomaly between measured gravity field of a polyhedron and the gravity field obtained by treating the polyhedron as a constant density model. Regolith modelling on the polyhedron can be done by decomposing the polyhedron into two polyhedra with a certain truncation radius r from the center. Using this approach, one can model a regolith of any depth, say 100 meters, on the

polyhedron and obtain the resulting signature. If ($\rho_{1},v_{1},C_{1}$) and ($\rho_{2},v_{2},C_{2}$) denote the set (density, volume, gravity co-effs) for the two polyhedra, new gravity co-efficients can be obtained by constraining total mass.