A method of estimating the angles of arrival .theta.1 and .theta.2 of two closely spaced radar targets of which one target may be the virtual image of the other target. The targets are illuminated with a radar beam of wavelength WL, and the resulting echos from the targets are received at three directive...http://www.google.fr/patents/US4532515?utm_source=gb-gplus-shareBrevet US4532515 - Angle of arrival measurements for two unresolved sources
Angle of arrival measurements for two unresolved sources
