Direction finding method
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United States of America Patent
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Nov 11, 2003
Grant Date -
Dec 19, 2002
app pub date -
Sep 25, 2001
filing date -
Jun 5, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Determining the angle of arrival of a signal by providing a plurality of antennae, sampling, in turn, the output from each of the antennae to obtain a set of samples, each of the samples relating to different points in time, performing a Fourier transform on the set of samples, thereby producing a sequence of spectral lines, identifying a signal impinging on the antennae from the configuration of the spectral lines, and calculating, from phase and amplitude data gathered from at least a subset of the spectral lines, the direction of arrival of the signal at the antennae.
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