Continuous wave wideband precision ranging radar
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
May 20, 1996
filing date -
May 20, 1996
priority date (Note) -
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Abstract
A precision ranging radar system for use in parking and backup maneuvers by drivers of vehicles to avoid collisions. The radar system includes a noise code generator for generating a noise code, a data source for generating a data bit stream, and a local oscillator microwave source. A data mixing mechanism is coupled to the noise code generator and data source for embedding data derived from the data source into the noise code. Transmit and receive microwave antennas are provided. A transmit phase modulator is coupled to the data mixing mechanism, the local oscillator microwave source, and the transmit antenna. A receive phase modulator is coupled to the local oscillator microwave source, and a code delay unit is coupled to the noise code generator and the receive phase modulator. A downconverter mixer is coupled to the receive microwave antenna and to the receive phase modulator, and a baseband integrator and amplifier is coupled to the downconverter mixer for outputting data from the radar system.
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