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Finite data performance of MUSIC and minimum norm methods

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2 Author(s)
Srinivas, K.R. ; Dept. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA ; Reddy, V.U.

In the direction of arrival (DOA) estimation problem, we encounter both finite data and insufficient knowledge of array characterization. It is therefore important to study how subspace-based methods perform in such conditions. We analyze the finite data performance of the multiple signal classification (MUSIC) and minimum norm (min. norm) methods in the presence of sensor gain and phase errors, and derive expressions for the mean square error (MSE) in the DOA estimates. These expressions are first derived assuming an arbitrary array and then simplified for the special case of an uniform linear array with isotropic sensors. When they are further simplified for the case of finite data only and sensor errors only, they reduce to the recent results given previously (1989, 1991). Computer simulations are used to verify the closeness between the predicted and simulated values of the MSE

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:30 ,  Issue: 1 )

Date of Publication:

Jan 1994

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