In a method and a device for sensing the surroundings by means of carrier waves in the form of transmission pulses which are emitted by at least one transducer (1, 2, 3, 4, 5, 20), and for sensing reflections of the pulses using a pulse/echo method, the invention provides a higher measuring density and improved quality of the measurement results by virtue of the fact that the successive transmission pulses of a transducer or various transducers which are operated at the same time can be differentiated by individual modulation of the signals.