Method for a one-sided radio-based distance measurement

A method for distance determination between two objects, wherein the two objects are time or clock-cycle-synchronized to 10 ns or better, and wherein one or both of a first object and a second object of the two objects emits signals at multiple frequencies, and the other of the one or both of the second object and the r first object of the two objects receives the signals at multiple frequencies, and the distance between the first object and the second object is determined therefrom as well as from knowledge of time-points at which features of the signals were emitted, wherein the method includes a decision whether the signals of the first object or the second object are used, or contains the decision as to which of the signals of the first object or the second object are used, wherein the decision rests in each case on the basis of at least one estimate or determination of effects of interferences on the reception at both of the two objects.