Cramer-Rao LowerBoundforDOA Estimation
Lockheed Martin, Arlington Va, George MasonUniversity, Fairfax Va · 2007
TheCramer-Rao lowerboundforestimating the azimuth andelevation angles ofmultiple planewave sources using aline arrayofgeneral nth_order sensors isderived, generalizing theresults ofNehorai andPaldi (1994) (1)forvector (first order) sensors. Ananalytical framework using spherical harmonics is usedtoderive theboundandtheMVDR estimator forthehigher ordersensor array. Theoretical andsimulation results forbotha single higher-order sensor andavertical line array arepresented.