| CPC G01S 13/935 (2020.01) [G01S 13/426 (2013.01); G01S 13/882 (2013.01)] | 20 Claims |
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1. A system comprising:
a radar sensor unit onboard a vehicle, the radar sensor unit comprising:
at least one antenna;
a transmitter operatively coupled to the at least one antenna, the transmitter configured to transmit one or more radar beams toward a surface through the at least one antenna;
a receiver operatively coupled to the at least one antenna, the receiver configured to receive a reflected return signal of the transmitted one or more radar beams through the at least one antenna; and
at least one processor unit operatively coupled to the transmitter and the receiver, wherein the at least one processor unit hosts a plurality of modules comprising:
a scanning control module operative to send a control signal to the transmitter, to the receiver, or to both the transmitter and the receiver, to generate one or more radar beams; and
a signal processing module configured to receive a reflected signal from the receiver to generate radar data;
an application module stored onboard the vehicle; and
a ground surface database stored onboard the vehicle or at a ground location;
wherein the application module is operative to:
access information from the ground surface database, access position and attitude data of the vehicle, access position and attitude uncertainty data of the vehicle, access radar installation data, and access radar data from the signal processing module;
identify one or more ground surface areas that are expected to provide a radar measurement with reduced reliability, based on the information from the ground surface database, the position and attitude of the vehicle, the position and attitude uncertainty of the vehicle, and the radar installation data; and
perform modified radar operations and/or processing when the one or more ground surface areas expected to provide the radar measurement with reduced reliability are within a radar field of view (FOV) of the radar sensor unit.
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