Method for commonly monitoring the near and far range of the surroundings of a device, in particular a device in motion, e.g. a vehicle, using ultrasound, for the existence of objects in the surroundings and/or of objects entering the surroundings, wherein in the method - within individual chronologically successive measuring intervals, an ultrasound transducer can first transmit an ultrasound burst signal in a transmission phase of a measuring interval and the ultrasound transducer receive a possible reflection of a previously transmitted ultrasound burst signal for the duration of a receive phase after a decay phase of the measuring interval, - wherein the measuring intervals comprise such pairs of chronologically successive measuring intervals in which different ultrasound burst signals, namely a first ultrasound burst signal in the chronologically earlier first measuring interval and a second ultrasound burst signal which is longer compared to the first ultrasound burst signal, are used in the chronologically later second measuring interval of the respective pair of measuring intervals, - wherein the second ultrasound burst signal has a larger energy than the first ultrasound burst signal, characterized in that - the first ultrasound burst signal is used for monitoring the near range of the surroundings of the device up to a predeterminable distance threshold value and the second ultrasound burst signal is used for monitoring the far range of the surroundings of the device from the distance threshold value, said far range adjoining said near range, - wherein the two ultrasound burst signals further differ with respect to codings in that the first ultrasound burst signal is not encoded and comprises a single or x-times ultrasound pulse where x<10, whereas the second ultrasound burst signal is encoded using a poly-phase code or a P4 code, whose phase skip wave is smaller than 90°, and - wherein the two ultrasound burst signals are not or substantially not correlated with each other. - within individual chronologically successive measuring intervals, an ultrasound transducer can first transmit an ultrasound burst signal in a transmission phase of a measuring interval and the ultrasound transducer receive a possible reflection of a previously transmitted ultrasound burst signal for the duration of a receive phase after a decay phase of the measuring interval, - wherein the measuring intervals comprise such pairs of chronologically successive measuring intervals in which different ultrasound burst signals, namely a first ultrasound burst signal in the chronologically earlier first measuring interval and a second ultrasound burst signal which is longer compared to the first ultrasound burst signal, are used in the chronologically later second measuring interval of the respective pair of measuring intervals, - wherein the second ultrasound burst signal has a larger energy than the first ultrasound burst signal, - the first ultrasound burst signal is used for monitoring the near range of the surroundings of the device up to a predeterminable distance threshold value and the second ultrasound burst signal is used for monitoring the far range of the surroundings of the device from the distance threshold value, said far range adjoining said near range, - wherein the two ultrasound burst signals further differ with respect to codings in that the first ultrasound burst signal is not encoded and comprises a single or x-times ultrasound pulse where x<10, whereas the second ultrasound burst signal is encoded using a poly-phase code or a P4 code, whose phase skip wave is smaller than 90°, and - wherein the two ultrasound burst signals are not or substantially not correlated with each other. <EOS>