RADAR APPARATUS
First Claim
1. A radar apparatus for installation in a mobile unit, comprising:
- a radar transmission unit that transmits a radar transmission signal in a high frequency band from a transmit antenna in each transmit period; and
a radar reception unit that receives a reflected wave signal resulting from the radar transmission signal being reflected off one or more stationary objects or one or more moving objects with each of a plurality of receive antennas,wherein the radar reception unit includesa plurality of antenna system processing units that each generate a correlation signal including arrival delay information for the reflected wave signal by computing a correlation between the reflected wave signal and the radar transmission signal and that output information based on a first plurality of Doppler frequencies contained in the correlation signal;
a Doppler frequency-azimuth conversion unit that converts a second plurality of Doppler frequencies estimated frequencies caused by the stationary objects into a first azimuth component in accordance with movement information for the mobile unit in same frequency as the first plurality of Doppler frequencies; and
a stationary object azimuth estimation unit that generates a first power profile for a first predetermined range including an azimuth in which the present of stationary object is estimated using the result of computation based on the information of the first plurality of Doppler frequencies and the first azimuth component.
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Accused Products
Abstract
A radar apparatus is installed in a vehicle that moves along its direction of travel. A radar transmission unit transmits a high frequency radar transmission signal from a transmit antenna in each transmit period. In a radar reception unit, antenna system processing units each generate a correlation vector by computing the correlation between reflected wave signal from a stationary object or a moving object and the radar transmission signal. A Doppler frequency-azimuth conversion unit converts Doppler frequencies into the components of an azimuth in which the stationary object is present using an estimated vehicle speed vector for the vehicle. A stationary object azimuth estimation unit generates the power profile of the reflected wave signal using the correlation vector and a direction vector corresponding to the components of the azimuth in which the stationary object is present.
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Citations
9 Claims
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1. A radar apparatus for installation in a mobile unit, comprising:
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a radar transmission unit that transmits a radar transmission signal in a high frequency band from a transmit antenna in each transmit period; and a radar reception unit that receives a reflected wave signal resulting from the radar transmission signal being reflected off one or more stationary objects or one or more moving objects with each of a plurality of receive antennas, wherein the radar reception unit includes a plurality of antenna system processing units that each generate a correlation signal including arrival delay information for the reflected wave signal by computing a correlation between the reflected wave signal and the radar transmission signal and that output information based on a first plurality of Doppler frequencies contained in the correlation signal; a Doppler frequency-azimuth conversion unit that converts a second plurality of Doppler frequencies estimated frequencies caused by the stationary objects into a first azimuth component in accordance with movement information for the mobile unit in same frequency as the first plurality of Doppler frequencies; and a stationary object azimuth estimation unit that generates a first power profile for a first predetermined range including an azimuth in which the present of stationary object is estimated using the result of computation based on the information of the first plurality of Doppler frequencies and the first azimuth component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification