公开(公告)号：US11863280B2

公开(公告)日：2024-01-02

申请号：US17250859

申请日：2019-09-14

Applicant: THE SECRETARY OF STATE FOR DEFENCE

Inventor： Gregory Singleton ,  Philip Henry Glasson

IPC: H04B7/08 ,  G01N29/22 ,  G01N29/26 ,  G01S7/54 ,  H04B7/06 ,  H04R3/00 ,  H04R29/00

CPC classification number: H04B7/086 ,  G01N29/221 ,  G01N29/262 ,  G01S7/54 ,  H04B7/0617 ,  H04R3/005 ,  G01N2291/106 ,  H04R29/002 ,  H04R29/005 ,  H04R2201/401

Abstract: Techniques for determining the directional frequency response of an arrangement of transducer elements are disclosed. In an example, a method includes providing a simulation of locations of the transducer elements, in the spatial domain; providing a beamforming direction and a frequency range; converting the simulation of locations from the spatial domain into corresponding frequency response values in a spatial frequency domain, such that, for each frequency of a plurality of frequencies in the frequency range, a spatial frequency contour is defined, each of the spatial frequency contours intersecting at the origin; determining the frequency response by applying a transformation to the frequency response values for the provided beamforming direction and frequency range and translating the spatial frequency domain into a modified frequency domain; and outputting the frequency response.