Step frequency high resolution radar
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United States of America Patent
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Jul 31, 2012
Grant Date -
Dec 13, 2007
app pub date -
Aug 23, 2005
filing date -
Aug 23, 2004
priority date (Note) -
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Abstract
The present invention is directed to an improved radar system that produces high range resolution while using existing narrow processing bandwidths and sampling rates to achieve a low cost radar product that is particularly useful for moving targets. The present invention uses a small number of closely spaced Linear Frequency Modulated Chirps. In one embodiment typically 2, 3, 4 chirps are used. Each frequency is sampled at a rate commensurate with the narrower bandwidth, corrected for motion, Time Aligned and combined to produce a single wide-band chirp but achieved using the lower sample rate commensurate with the narrower transmitted waveform.
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