Radar apparatus
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United States of America Patent
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Jul 27, 2010
Grant Date -
Jan 24, 2008
app pub date -
Jan 12, 2006
filing date -
Jan 19, 2005
priority date (Note) -
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Abstract
Marine radar apparatus propagates groups of three pulses A, B, C of the same amplitude but different widths, the shorter pulse enabling detection of close range targets and the longer pulses enabling detection of longer range targets. The pulses are encoded differently with the short pulse A being a continuous wave signal and the longer pulses being modulated with a frequency modulated chirp, one pulse C being chirp up and the other B being chirp down. The power of the radar need only be about 190 w.
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