Method for detecting target echoes in a received signal of an ultrasonic sensor of a motor vehicle, ultrasound sensor device and motor vehicle

摘要

The invention relates to a method for detecting target echoes (11) in a received signal (ES) of an ultrasonic sensor of a motor vehicle by providing a reference signal (RS) for decoding the received signal (ES), wherein in each case a correlation input signal (RS) is provided for a multiplicity of predetermined frequency shift values. by shifting the reference signal (RS) in its frequency by the respective frequency shift value; by correlating the received signal (ES) separately with each of the correlation input signals (RS) and thereby providing respective correlation outputs (KS1 to KS7) as a result of the respective correlation; and by providing a sum signal (SS) as the sum of the correlation output signals (KS1 to KS7), one of the correlation output signals (KS1 to KS7) being selected based on the sum signal (SS) and detecting the target echoes (11) by evaluating the selected correlation output signal (KS1 to KS7).