Method for ascertaining a blindness of an ultrasonic sensor of an ultrasonic system, and ultrasonic system

A method for ascertaining a blindness of an ultrasonic sensor of an ultrasonic system, comprising the following steps:

• transmitting an ultrasonic signal using a first ultrasonic sensor of the ultrasonic system into an environment of the first ultrasonic sensor;
• generating a first measurement signal, which represents first ground echoes of the transmitted ultrasonic signal that are received by the first ultrasonic sensor;
• generating a second measurement signal, which represents second ground echoes of the transmitted ultrasonic signal that are received by a second ultrasonic sensor of the ultrasonic system;
• normalizing the first measurement signal and the second measurement signal;
• and
• ascertaining a blindness of the first ultrasonic sensor and/or of the second ultrasonic sensor by comparing the first measurement signal with the second measurement signal.

An ultrasonic system, comprising:

• a first ultrasonic sensor;
• a second ultrasonic sensor;
• and
• an evaluation unit;
• wherein
• the first ultrasonic sensor is configured to
• transmit an ultrasonic signal into an environment of the first ultrasonic sensor,
• generate a first measurement signal, which represents first ground echoes of the transmitted ultrasonic signal that are received by the first sensor,
• the second ultrasonic sensor is configured to generate a second measurement signal, which represents second ground echoes of the transmitted ultrasonic signal that are received by the second sensor of the ultrasonic system, and
• the evaluation unit is configured to
• normalize the first measurement signal and the second measurement signal, and
• ascertain a blindness of the first ultrasonic sensor and/or of the second ultrasonic sensor by comparing the first measurement signal with the second measurement signal.