Method and device for increasing the DF accuracy of a receiver arrangement

摘要

Method for increasing the DF accuracy of a receiver arrangement (12), wherein sound waves (15) receive with the receiver arrangement (12) from the sound waves (15) by means of the receiver arrangement (12) receive signals (16a to 16c) from the received signals (16a to 16c ) Direction signals (20a to 20c) each of a relative receiving direction (21a to 21c) and from each direction signal (20a to 20c) the same receiving direction (21a to 21c) associated frequency lines (64a to 64j) each having a frequency of a frequency range (62) having an amplitude value (68), characterized in that a directional function (78) is formed for each frequency of the frequency range (62), each first function argument (80) of a directional function (78) corresponding in each case to one of the reception directions (21a to 21c), adjacent first function arguments (80) correspond to adjacent receive directions (21a to 21c) and each first function argument (80) is used as a function name t (84) has the amplitude value (68) or a value derived from the amplitude value (68) of the frequency line (64a to 64j) of the frequency of the respective direction function (78) of the receive direction (21a to 21c) corresponding to the first function argument (80), and transforming each of the directional functions (78) into the spectral domain and the first spectral function (46) derived therefrom includes first spectral function arguments (102) and the first spectral function (46) between intermediate spectral function arguments (104) of the first spectral function arguments (102) with further spectral function arguments (108 ), wherein the further spectral function arguments (108) each have a zero (zero) or zero function value (84), and the filled-in first spectral function (46) is retransformed from the spectral region, yielding an interpolated first directional function (60) ,