Abstract: A method for calibrating an elevation angle of an ultrasonic sensor of an ultrasound-based driver assistance system of a vehicle.

Abstract: A method for calibrating an ultrasonic sensor of an ultrasound-based driver assistance system of a vehicle. The vehicle is placed on a ground. The method includes: a) prespecifying a height of the ultrasonic sensor from the ground or ascertaining the height of the ultrasonic sensor from the ground; b) emitting a number of ultrasonic pulses, wherein each ultrasonic pulse is emitted to form a main lobe and a side lobe, and the emission takes place such that the side lobe is directed toward the ground; c) detecting a plurality of side-lobe ground echoes; d) ascertaining and storing a correction value for detecting an elevation angle with the ultrasonic sensor and/or ascertaining and storing a correction value for detecting an azimuth angle with the ultrasonic sensor based on a number of the plurality of side-lobe ground echoes detected in step c).

Abstract: A method for ascertaining a three-dimensional position of a reflection point of an object in the environment of a vehicle using an ultrasonic sensor having at least three sensor elements. At least two sensor elements are arranged at a horizontal offset to one another and at least two sensor elements are arranged at a vertical offset to one another. The method includes: transmitting at least two ultrasonic signals using at least one of the sensor elements of the ultrasonic sensor, wherein the two ultrasonic signals are transmitted chronologically one after the other, and the two ultrasonic signals are transmitted in different spatial directions and/or with respectively differently shaped sonic cones and/or with respectively different ultrasonic frequencies; sensing the transmitted ultrasonic signals, each reflected on an object, as reflection signals using the at least three ultrasonic sensor elements; and ascertaining the three-dimensional position of a reflection point of the object.

Abstract: A method for operating at least one ultrasonic sensor array, in particular, using a control unit. The ultrasonic sensor array is driven to generate sonic echos. Reflected sonic echos are received by the ultrasonic sensor array, in order to generate measurement data on the basis of the received sonic echos. The ultrasonic sensor array is driven to generate and receive sonic echos in such a manner, that a horizontal and/or vertical solid angle of a detecting range is changed. A control unit, a computer program, and a machine-readable storage medium, are also described.