Abstract: A process for geotechnic exploration comprising the steps of:(a) Emitting one or more brief electromagnetic pulses or waves from an airborne platform at regular intervals based on the airspeed of the platform and the area being surveyed;(b) The wavelengths, frequencies and cyclicity of the waves being selected to provide, upon reflection, satisfactory indicia of the physical characteristics of the area being measured;(c) Receiving the reflections of said waves at said platform;(d) Amplifying said reflected waves to a readily processable level;(e) Processing said waves to enhance the spatial resolution of images produced therefrom;(f) Further processing said waves by selecting those variables represented by the waves that are deemed relevant;(g) Displaying said waves in visual form representing a cross-section of an area;(h) If desired, storing in recoverable form the signals representing said variables; and(i) Repeating said process as often as desired.