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US 2022/0187415 A1Published application
Method for object classification using polarimetric radar data and device suitable therefor
AssigneeCruise Munich GmbH
InventorStefan Trummer
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Abstract
The invention relates to a method for object classification which comprises the following steps for providing an elliptically or circularly polarized transmission signal which is transmitted to the object to be classified: generating a first radar image from the copolarly polarized reflection signal and generating a second radar image from the cross-polarized reflection signal and comparing the first radar image with the second radar image.
Claims20
An object classification system comprising:
- a transmitter system configured to output alternating signals, wherein the transmitter system is configured to alternately emit a first signal with a first polarization and a second signal with a second polarization;
- a receiver configured to detect a reflected first signal that has reflected from an object, wherein the receiver is further configured to detect a reflected second signal that has reflected from the object, wherein the receiver is yet further configured to generate a first radar image from the reflected first signal, wherein the receiver is also configured to generate a second radar image from the reflected second signal;
- and
- a comparison system configured to perform a comparison between the first radar image and the second radar image, wherein the comparison system compares signal properties of local maxima of the reflected first signal in the first radar image and local maxima of the reflected second signal in the second radar image, wherein the object is classified based upon the comparison.
1 more element
A method for performing object classification, the method comprising:
- transmitting, by a transmitter system, a first signal with a first polarization;
- subsequent to transmitting the first signal, transmitting, by the transmitter system, a second signal with a second polarization;
- detecting, by a receiver;
- a reflected first signal based upon the first signal reflecting from an object;
- generating a first image based upon the reflected first signal;
- detecting, by the receiver, a reflected second signal based upon the second signal reflecting from the object;
- generating a second image based upon the reflected second signal;
- performing a comparison between the first image and the second image, wherein performing the comparison comprises comparing signal properties of local maxima of the reflected first signal with local maxima of the reflected second signal;
- and
- assigning a classification to the object based upon the comparison.
7 more elements
An object classification system comprising:
- a transmitter system configured to alternately output a left-circular polarization signal and a right-circular polarization signal;
- a receiver configured to detect a reflected left-circular polarization signal that is based upon the left-circular polarization signal reflecting off of an object, wherein the receiver is further configured to detect a reflected right-circular polarization signal that is based upon the right-circular polarization signal reflecting off of the object;
- and
- a comparison system configured to perform a comparison between local maxima of the reflected left-circular polarization signal and local maxima of the reflected right-circular polarization signal, wherein a classification is assigned to the object based upon the comparison.
1 more element
Dependencies are inferred from the claim text.