METHOD AND DEVICE FOR CALIBRATION OF DUAL-AXIS TILT METER

摘要

The invention is directed toward a subsurface gravity measurement device and a method for calibrating the same that includes a tilt meter and a gravity sensor. The method includes associating tilt information produced by the gravity sensor as a function of a relationship between tilt information produced by the tilt meter and a correction parameter. The tilt meter produces tilt data, and the gravity meter produces gravity data, correspondi ng to the tilt data. The tilt data and gravity data is fitted to a polynomial equation that has a plurality of initial coefficients associated therewith. The initial coefficients include information concerning the correction parameter. The correction parameter is derived as a function of t he initial coefficients.