Title :
ESPRIT with perturbed subarrays
Author_Institution :
Florida Inst. of Technol., Melbourne, FL, USA
Abstract :
The effectiveness of the ESPRIT direction-finding algorithm in the presence of array perturbations is addressed. For the single-signal case, expressions are found for the errors in the angle of arrival due to element location perturbations, element gain and phase errors, and subarray rotations. Results are also presented for the multiple signal situation. For random location perturbations, the variance in the angle of arrival is shown to be proportional to the variance in the perturbations. The optimal array for insensitivity to perturbations is found. An ESPRIT extension which corrects for known perturbations is presented
Keywords :
errors; matrix algebra; parameter estimation; signal processing; ESPRIT; angle of arrival; array perturbations; direction-finding algorithm; multiple signal situation; optimal array; perturbed subarrays; phase errors; random location perturbations; rotational invariance techniques; signal parameters estimation; single-signal case; Covariance matrix; Equations; Narrowband; Navigation; Noise measurement; Parameter estimation; Phased arrays; Propagation delay; Sensor arrays; Voltage;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1990. ICASSP-90., 1990 International Conference on
Conference_Location :
Albuquerque, NM
DOI :
10.1109/ICASSP.1990.116244
