I-Chun Alexandra Hou and Mandayam A. Srinivasan.Also issued as a Ph.D. thesis, Dept. of Electrical Engineering and Computer Science, Massachusetts Institute of Technology.Includes bibliographical references (p. 103-105).Sponsored by the Naval Air Warfare Center Training Systems Division. N61339-96-K-0002 Sponsored by the Office of Naval Research. N00014-97-1-0635