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access icon free Conclusions

The aim in this brief final chapter is to summarise the major conclusions. Until recently, the output of a DF system was usually thought of as a single number, the indicated bearing of the target transmitter. Traditionally, the wave-field, no matter how complex, was interpreted in terms of a one-ray field, with the ray arriving from a constant azimuth. The need to achieve mode resolution with WADF's of reasonable aperture (a few wavelengths) implies that the benefits of time-sampling as well as space-sampling must be incorporated in the processing scheme.

Inspec keywords: radio transmitters; direction-of-arrival estimation; radio direction-finding

Other keywords: target transmitter bearing; space sampling; superresolution; mode resolution; WADF; radio direction finding; time-sampling

Subjects: Radionavigation and direction finding

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Conclusions, Page 1 of 2

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