Patent ID: 8378882

Claim:
A method for operating a radar, the method comprising: determining, by a mixer device, first differential signals from a first transmitted frequency-modulated signal and received components of the first transmitted frequency-modulated signal reflected by a plurality of objects; determining, by a data processing device, in each case one first chirp signal for each first differential signal, the first chirp signal corresponding to a double differentiation of a phase of the first differential signal with respect to time; determining, by the mixer device, second differential signals from a second transmitted frequency-modulated signal and received components of the second transmitted frequency-modulated signal reflected by the plurality of objects; determining, by the data processing device, in each case one second chirp signal for each second differential signal, the second chirp signal corresponding to a double differentiation of a phase of the second differential signal with respect to time; assigning, by the data processing device, one of the first differential signals to one of the second differential signals, based on a correspondence of the first chirp signal, that is assigned to the one first differential signal, to the second chirp signal that is assigned to the one second differential signal; and determining, by the data processing device, at least one of a separation distance and a relative speed of one of the objects, based on the one first differential signal and the one second differential signal assigned to the first differential signal.