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AssigneeIVHS Technologies, Inc.
InventorsJimmie Asbury, John W. Davis
Estimating the term…
A Doppler control circuit for a CW or pulse Doppler radar system for monitoring not only the phase shift between echo signals from several targets but also the amplitude difference between the several targets and to further tune the radar to a particular target among one or more targets from which echo signals return. The control circuit can be used in state of the art CW or pulse Doppler type radar systems. In a further system, a special circuit is provided for conditioning selected portions of the Doppler frequency spectrum to attenuate or de-emphasize portions of the echo signal corresponding to selected targets in the radar system environment, such as rain or stationary wayside objects, in order to give such echo signals less weight in determining roadway hazards.
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, and for generating a spectrum of Doppler frequencies from such received echo signals, a Doppler spectrum de-emphasis circuit comprising:
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, and for generating a spectrum of Doppler frequencies from such received echo signals, a Doppler spectrum de-emphasis circuit comprising:
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, and for generating a spectrum of Doppler frequencies from such received echo signals, a Doppler spectrum de-emphasis circuit comprising:
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, for generating a spectrum of Doppler frequencies from such received echo signals, including a Doppler frequency indicative of the speed of the vehicle, and for generating a vehicle speed signal, a Doppler spectrum de-emphasis circuit comprising:
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, for generating a spectrum of Doppler frequencies from such received echo signals, including a Doppler frequency indicative of the speed of the vehicle, and for generating a vehicle speed signal, a Doppler spectrum de-emphasis circuit comprising:
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, and for generating a spectrum of Doppler frequencies from such received echo signals, a method of de-emphasizing the generated Doppler spectrum comprising the steps of:
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, for generating a spectrum of Doppler frequencies from such received echo signals, including a Doppler frequency indicative of the speed of the vehicle, a method of de-emphasizing the generated Doppler spectrum comprising the steps of:
In a vehicle radar system of the type having means for transmitting a radar signal and for receiving echo signals of the radar signal, for generating a spectrum of Doppler frequencies from such received echo signals, including a Doppler frequency indicative of the speed of the vehicle, and for generating a vehicle speed signal, a method of de-emphasizing the generated Doppler spectrum comprising the steps of:
Dependencies are inferred from the claim text.