Title :
Fundamental limitations of diversely polarized antenna arrays
Author :
Weiss, Anthony J. ; Friedlander, Benjamin
Author_Institution :
Dept. of Electr. Eng., Tel Aviv Univ., Israel
Abstract :
The performance of direction finding systems in a correlation 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. Compact closed form formulas are presented for the CRB corresponding to the joint estimation of the directions of arrival, 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; array signal processing; electromagnetic wave polarisation; radio direction-finding; Cramer-Rao bound; DOA; antenna arrays; closed form formulas; correlation signal environment; direction finding systems; directions of arrival; noise variance; polarization diversity; signal covariance matrix; signal polarization parameters; signal separation; system performance; Antenna arrays; Antennas and propagation; Covariance matrix; Direction of arrival estimation; Polarization; Propagation delay; Radar antennas; Radar clutter; Sensor arrays; Sensor systems;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., 1992 IEEE International Conference on
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-0532-9
DOI :
10.1109/ICASSP.1992.226339
