New Method for Calculation of the Building Effect Correction in Microgravity Technique

Microgravity surveys for archaeological applications conducted in the interior of the buildings require careful data acquisition and processing. We have developed modern, effective and fast data processing procedure for calculation of the building effect correction in microgravity technique. Polyhedral body of historical building is created from images in Eos System’s PhotoModeler Scanner software which is based on close range photogrammetry principles. Comparison of equations for calculation of the gravitational effect of polygonal bodies is presented on a simple test model. The case study from small Slovak church shows that close range photogrammetry offers a possibility to improve microgravity data processing procedures. Our new method provides high accuracy of calculated building effect corrections, thus improving the ability of microgravity technique to detect more difficult identifiable cavities which are situated in a close vicinity to man-made structures.