The second edition (1993, ISBN 0-89006-618-3) is out of print from Artech House. However, many university libraries and defense technical information centers hold copies. may be available via:
If you want, I can now:
Radar Cross Section (often referred to simply as "Knott") is widely considered the definitive textbook and reference manual for the science of radar signature analysis and control. Co-authored by Eugene F. Knott—a renowned researcher and Fellow of the IEEE—along with Shaeffer and Tulley, the book bridges the gap between theoretical electromagnetics and practical engineering applications. radar cross section eugene f. knott pdf