Frequency–Time Method of Processing Phase Measurements in Geophysics

Abstract

A frequency–time method is proposed for analyzing geophysical phase information whose implementation approaches the results of the operation of an ideal filter. The method is based on the principle of expanding an observed signal over a system of basis functions. The procedure developed makes it possible to determine the phase of the signal and to estimate the operational stability of the phase measuring system. The procedure can be used when designing geophysical measuring devices utilizing optical phase measurements.