Nusty bias effects of the cross spectral matrix when detecting target in presence of strong jammers

The deleterious bias effects of the cross-spectral matrix when detecting target in presence of noise and strong jammers are shown. A theoretical study of this phenomenon is performed using elementary perturbation theory in order to determine spectral and spatial property of the ghost targets generat...

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Bibliographic Details
Published inInternational Conference on Acoustics, Speech, and Signal Processing pp. 2855 - 2858 vol.5
Main Author Maguer, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1990
Subjects
Array signal processing
Jamming
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Summary:The deleterious bias effects of the cross-spectral matrix when detecting target in presence of noise and strong jammers are shown. A theoretical study of this phenomenon is performed using elementary perturbation theory in order to determine spectral and spatial property of the ghost targets generated by this bias decoherency. The influence of this feature is then analyzed for adaptive and null steering beamforming. The performance of adaptive beamforming is significantly better and greatly improved when all the sensor signals are phased in the jammer direction.< >
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.1990.116221