A preliminary experimental investigation of the identification of simple geometric objects by means of their broad-band scattering characteristics has been conducted. The objective of the investigation was to determine the feasibility of identifying the backscattered signature of an object insonified by pseudo-random noise by comparing the unknown measured signature with each of a group of known recorded signatures that includes the signature of the unknown object. Spheres, cylinders, and cubes of various materials, flooded and airfilled, were suspended in water in a free field and insonified with pulses of pseudorandom noise. Echoes in the 0–50-kHz band were received and analyzed by means of a fast-Fourier processor. Correlations were performed that supported the contention that the signatures at a given aspect of an object are unique and re-peatable and, hence, may be used as a basis for identification. Continuing work includes an effort to determine the number of different-aspect signatures required to completely characterize an object. [This work was supported by the Naval Research Laboratory.]