A method for determining one or more relative directions as a determining or target bearings as well as an apparatus for carrying out the method

摘要

The invention relates to a device as well as a method for determining one or more relative directions 21a to 21c as a determining or target bearings. In this case, the sound waves 15 by a receiver arrangement 12 and received from the sound waves 15 received signals 16a to 16c formed. From the received signals 16a to 16c direction signals 20a to 20c are determined, which a relative the direction of 21a to 21c to the receiver arrangement 12 are associated with. From each direction signal 20a to 20c, a magnitude spectrum 46 or a of the magnitude spectrum (46) spectrum is determined and is derived from the frequency range (66) of each magnitude spectrum (46) or each of the magnitude spectrum (46) derived spectrum frequency bands (76a to 76h) is determined. The amplitude values (71) of the in one of the frequency bands (76a to 76h) occurring frequencies (68a to 68j) are then used as a frequency band amplitude value (78a to 78h) of the respective frequency band (76a to combined 76h). The relative direction (21a to 21c), the a magnitude spectrum (46) or any one of the magnitude spectrum (46) derived spectrum is associated, is determined according to the invention, as a determining if the this relative the direction (21a to 21c) associated magnitude spectrum (46) or the derived from the magnitude spectrum spectrum at least a number of frequency band amplitude values (78a to 78h) above a threshold value (31) above a predetermined detection number (38) is.