The paper describes the process of calibrating a GPR sounding source, provides a mathematical basis for this process, and presents the results of calibration based on data measured in a sand quarry, where the electromagnetic parameters of the probed medium are known. The obtained parameter values characterizing the behavior of the source can now be considered known and used to numerically solve inverse problems to determine unknown electromagnetic parameters of the medium using algorithms that are not built into the GPR software.
key words: GPR, source calibration, inverse problem.
