US Patent No. 10,557,920

METHOD FOR BLINDNESS RECOGNITION IN RADAR SENSORS FOR MOTOR VEHICLES


Patent No. 10,557,920
Issue Date February 11, 2020
Title Method For Blindness Recognition In Radar Sensors For Motor Vehicles
Inventorship Maija Chabaud, Ludwigsburg (DE)
Volker Gross, Ditzingen (DE)
Assignee Robert Bosch GmbH, Stuttgart (DE)

Claim of US Patent No. 10,557,920

1. A method for determining a degree of blindness of a radar sensor in a motor vehicle on the basis of a measurement of a receive power level of a radar echo, the method being carried out when at least one object is located by the radar sensor, the method comprising:determining an expected value E for the radar scatter cross-section of the object on the basis of known properties of objects to be located;
estimating a radar scatter cross-section S of the located object based on a measured receive power level; and
calculating an indicator K for the degree of blindness of the radar sensor as a monotonically increasing function of a difference between the estimated radar scatter cross-section S and the expected value E.