Title :
A note on most favorable array geometries for DOA estimation and array interpolation
Author :
Gershman, Alex B. ; Böhme, Johann F.
Author_Institution :
Dept. of Electr. Eng., Ruhr-Univ., Bochum, Germany
Abstract :
Given an n-element linear array with the fixed positions x/sub 1/ and x/sub n/ of the leftmost and rightmost array sensors, it is shown that the stochastic Cramer-Rao bound (CRB) and MUSIC performance depend on positions of the remaining n-2 sensors within the interval [x/sub 1/, x/sub n/]. The asymptotic performance of the interpolated array approach shows similar dependence. The most favorable geometries are unrealizable for q\n\n\t\t
Keywords :
array signal processing; direction-of-arrival estimation; interpolation; DOA estimation; MUSIC performance; NULA geometries; ULA; array interpolation; asymptotic performance; interpolated array approach; interpolated root-MUSIC; most favorable array geometries; n-element linear array; point clusters; realizable nonuniform linear array geometries; stochastic Cramer-Rao bound; virtual uniform linear array; Apertures; Direction of arrival estimation; Geometry; Interpolation; Multiple signal classification; Performance analysis; Sensor arrays; Stochastic processes; Vectors; White noise;
Journal_Title :
Signal Processing Letters, IEEE
