This book evolved from course lecture notes on radar cross section at the Naval
Postgraduate School. Since the first edition there have been dramatic changes in
many aspects of RCS. One change is in the area of computational electromagnetics
(CEM). Until the mid- 1990s most of the CEM applications had been developed by
the U.S. government or private companies, and were not widely distributed. Since
then, many sophisticated commercial software packages have become available.
This fact, along with the increase in computer memory and speed, has made RCS
simulations practical and accessible for realistic complex targets.