Patent ID: 7961139

Claim:
Method for angular determination and/or for increasing an angular resolution and/or a detectable angular range when operating antenna groups using the technique of digital beam forming (DBF), in which a measurement signal comprising a carrier signal and a frequency-modulated signal component is received via at least one antenna group directly or after reflection on one or several objects, and an angle, at which the measurement signal is received by the antenna group, is determined by evaluating a phase difference in the received measurement signal, which occurs between adjacent antenna elements of the antenna group when receiving the measurement signal, characterised in that for determining the phase difference the frequency-modulated signal component is also evaluated, exclusively or additionally to an evaluation of the carrier signal and two antenna groups are used, of which a first antenna group is configured for a high angular resolution relative to the second antenna group by evaluating the carrier signal, and the second antenna group is configured for evaluating the frequency-modulated signal component.