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Direction finding algorithms based on high-order statistics

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2 Author(s)
Porat, B. ; Signal Process. Technol. Ltd., Palo Alto, CA, USA ; Friedlander, Benjamin

Two direction finding algorithms are presented for nonGaussian signals, which are based on the fourth-order cumulants of the data received by the array. The first algorithm is similar to MUSIC, while the second is asymptotically minimum variance in a certain sense. The first algorithm requires singular value decomposition of the cumulant matrix, while the second is based on nonlinear minimization of a certain cost function. The performance of the minimum variance algorithm can be assessed by analytical means, at least for the case of discrete probability distributions of the source signals and spatially uncorrelated Gaussian noise. The numerical experiments performed seem to confirm the insensitivity of these algorithms to the (Gaussian) noise parameters

Published in:

Signal Processing, IEEE Transactions on  (Volume:39 ,  Issue: 9 )

Date of Publication:

Sep 1991

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