1. Cooper, G.R., and McGillem, C.D.: ‘Random signal radar’. Final report, NASA grant-NSG 543, Purdue University, Lafayette, IN, June 1967
2. Ultrawide-band noise radar in the VHF/UHF band
3. Taylor, J.D.: ‘Introduction to ultra-wideband (UWB) radar systems’, (CRC Press, Inc., Boca Raton, FL 1995)