Patent ID: 11888554
Assignee: NXP USA, INC.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 19:
20. The radar system of claim 17, where constructing beamforming outputs of the extended difference co-array virtual array aperture comprises using the FFT hardware accelerator to perform spectral-domain auto-correlation based processing when performing forward and backward difference co-array processing on the sparse MIMO virtual array aperture by:
computing a spectrum value Y as a fast Fourier transform of a zero-padded MIMO array output vector y;
computing a spectrum product Z as a product of the spectrum value Y and a complex conjugate of the spectrum value Y*;
computing a spectral sample vector z as an inverse Fourier transform of the spectrum product Z; and
computing a final difference co-array output vector v as a quotient of the spectral sample vector z and a contributing number vector c retrieved from memory.