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| FOURTH-ORDER CUMULANT BASED ARRAY EXTENSION IN DIRECTION-FINDING |
| Wei Ping; Xiao Xianci |
| University of Electronic Science and Technology of China Chengdu 610054 |
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Abstract In the array processing problem, the high-order cumulants not only are capable to reduce the Gaussian noises but also have the aperture extension property. The method of the aperture extension using the fourth-order cumulants are studied and the structure of the corresponding virtual array are presented in this paper. The fourth-order coherent problem in the application in the narrow-band direction-finding system is given and analyzed. We obtain the array aperture extension condition of the fourth-order cumulant-based method to the multiple sources case. The numerical results support the analytic results.
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Received: 25 March 1996
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1997, Vol. 19 
