Method of fitting, comparing and extracting buried pipeline attributes through ground-penetrating radar result

The invention provides a method of fitting, comparing and extracting buried pipeline attributes through a ground-penetrating radar result. The method comprises the following steps of combining different pipeline attributes and forming an attribute combination table possessing a plurality of attribute combinations; for the different attribute combinations, through a GPRMax tool, carrying out forward modeling and acquiring the forward modeling results of the attribute combinations; collecting the time of the forward simulation results of the attribute combinations and amplitude combination curves and establishing a forward modeling wave spectrum characteristic database, hitching with the attribute combinations and forming a ground-penetrating radar pipeline detection wave field characteristic database; through a curve fitting algorithm, carrying out curve fitting on the time and the amplitude combination data of actual-measurement ground-penetrating radar data and the time and the amplitude combination curves i