Title :
Performance study of the local polynomial approximation based beamforming in the presence of moving sources
Author :
Katkovnik, Vladimir ; Gershman, Alex B.
Author_Institution :
Mechatronics Dept., Kwangju Inst. of Sci. & Technol., South Korea
fDate :
8/1/2002 12:00:00 AM
Abstract :
A windowed local polynomial approximation (LPA) of time-varying directions of arrival is used to develop an LPA-beamformer for localization of rapidly moving sources. Closed-form expressions are obtained for the bias and variance of the LPA-beamformer in the moving source case and the problem of the optimal window choice is discussed.
Keywords :
array signal processing; direction-of-arrival estimation; polynomial approximation; array processing; beamforming; closed-form expressions; local polynomial approximation; moving source localization; time-varying DOA estimation; time-varying direction of arrival estimation; Array signal processing; Closed-form solution; Direction of arrival estimation; Gaussian noise; Helium; Polynomials; Robustness; Sensor arrays; Tracking; Vectors;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.802269
