Application of Orthogonal Perturbation Sequences to Adaptive Beamforming

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    Abstract

    The application of orthogonal perturbation sequences to adaptive beamforming is considered. The perturbation approach is relevant when all the array element signals in an array are not accessible but the array weights are independently adjustable. The perturbation sequences can be used to provide an estimate of the gradient required for adaptive beamforming. A unified analysis of the performance of orthogonal perturbation sequences is presented, and the performance of some specific sequences is investigated. It is demonstrated that for time multiplex perturbation sequences the penality incurred because of the use of perturbations for gradient estimation in adpative beamforming is an increase by a factor N in the system time constants.

    Original languageEnglish
    Pages (from-to)191-202
    Number of pages12
    JournalIEEE Transactions on Antennas and Propagation
    Volume28
    Issue number2
    DOIs
    Publication statusPublished - 1 Jan 1980

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