Barbara G. Grant is an electro-optical engineer, author, and educator with 40 years' experience in remote sensing, radiometry, and imagery analysis. She received the M. S. degree in Optical Sciences from the University of Arizona in 1989, and has been consulting since 1995. She is a Fellow of SPIE--the international society for optics and photonics and a Distinguished Instructor in UC Irvine's certificate programs in optical engineering and optical instrument design.