Title :
Performance of diversely polarized antenna arrays for correlated signals
Author :
Friedlander, Benjamin ; Weiss, Anthony J.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
fDate :
7/1/1992 12:00:00 AM
Abstract :
The performance of direction finding systems in a correlated signal environment utilizing diversely polarized antenna arrays is investigated. The Cramer-Rao bound (CRB) is used to evaluate the accuracy of the estimated directions of arrival (DOAs). Compact closed form formulas are presented for the CRB corresponding to the joint estimation of the DOAs, signal covariance matrix, signal polarization parameters, and noise variance. The CRB is evaluated numerically for selected examples, to provide insights into the potential improvement in direction-finding accuracy due to polarization diversity
Keywords :
antenna arrays; correlation methods; diversity reception; electromagnetic wave polarisation; numerical methods; parameter estimation; radio direction-finding; signal detection; signal processing; Cramer-Rao bound; correlated signals; direction finding systems; diversely polarized antenna arrays; estimated directions of arrival; noise variance; polarization diversity; signal covariance matrix; signal polarization parameters; Antenna arrays; Array signal processing; Covariance matrix; Direction of arrival estimation; Directive antennas; Multiple signal classification; Navigation; Polarization; Signal processing; Working environment noise;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
