Patent ID: 11863280
Assignee: THE SECRETARY OF STATE FOR DEFENCE
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A non-transitory computer-readable medium comprising program instructions which, when executed by a processor, cause the processor to perform operations comprising:
(i) providing a simulation of locations of an arrangement of transducer elements, in a spatial domain;
(ii) providing a beamforming direction and a frequency range;
(iii) converting the simulation of locations from the spatial domain into corresponding frequency response values in a spatial frequency domain, the frequency response values having spatial frequency coordinates, such that:
for each frequency of a plurality of frequencies in the frequency range, a spatial frequency contour, defined by a locus of points in the spatial frequency domain corresponding to the location of the frequency response values associated with a frequency response, as a function of direction, of the arrangement of the transducer elements with respect to that frequency and the beamforming direction, passes through an origin of the spatial frequency domain,
wherein each of the spatial frequency contours for each of the plurality of frequencies intersect at the origin;

(iv) determining the frequency response, as a function of direction, of the arrangement of transducer elements by applying a transformation to the frequency response values for the provided beamforming direction and frequency range, wherein applying the transformation comprises translating the spatial frequency domain into a modified frequency domain, such that the contours avoid intersecting; and
(v) outputting the frequency response values in the modified frequency domain, as the frequency response, as a function of direction, of the arrangement of the transducer elements with respect to the beamforming direction.