Abstract

AbstractInefficiency of classical Capon’s method of bearing angles estimation of radio sources of far-field region with the flat phase front of electromagnetic wave was shown for bearing angles estimation of radio sources with spherical phase front of electromagnetic wave located in the intermediate-field region relatively to the inputs of linear antenna array of radio direction finder. A modification of Capon’s method to deal with the spherical electromagnetic wave front is proposed and some simulation results of bearing angles estimation for several radio sources located simultaneously in the intermediate-field and far-field regions are presented.KeywordsRadio sourceSpatial spectrumElectromagnetic wavePhase frontSphericityLinear antenna arrayRadio direction finderIntermediate-field regionFar-field region

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