Ground-penetrating radar images of geologic structures provide information about the crucial third dimension, which is inaccessible to geologic mapping. In order to correlate images with geologic mapping, photomosaics, and behind-outcrop borehole logs, radar profiles must be accurately mapped. Moreover, accurate profile elevations are required during processing to avoid introducing into the radar image false structures associated with topographic relief. In recent years, radar station locations and elevations have been obtained very efficiently from a self-tracking laser theodolite operated at the same time the radar data are being acquired. The required physical link between radar and laser systems, however, may make...

You do not currently have access to this article.