Ambiguity in MUSIC and ESPRIT for direction of arrival estimation
Chao Min Tan, Se Foo, Mark A Beach, Andrew Nix · Electronics Letters · 2002
The MUltiple SIgnal Classification (MUSIC) and Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT) algorithms produce an ambiguity in the estimated direction-of-arrival results, when the antenna element spacing on a linear array is more than half a wavelength. The reason for this is investigated.