1. An apparatus for identifying a buried object using ground penetrating radar (GPR) in a system containing at least one GPR sensor, comprising: a data processor comprising means for detecting spatial correlations corresponding to the buried object in data received from the at least one GPR sensor, and a wave speed calculator; an image processor for building a data structure corresponding to an image of the buried object from data processed by the data processor using the means for detecting and the wave speed calculator; and a descrminator for identifying the buried object from data in the data structure.