Patent ID: 11927664
Assignee: NXP B.V.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 12:
13. For use with a radar circuit having antenna elements and front-end transceiver circuitry to transmit radar signals and, in response, to receive reflection signals from objects, an apparatus comprising:
logic circuitry including a first module, a second module and a memory circuit for hosting a sparse array;
the first module to process data corresponding to the reflection signals via the sparse array and, in response, to generate output data indicative of signal magnitude associated with the reflection signals, and
the second module to discern angle-of-arrival information for the output data by:
correlating the output data with at least one spatial frequency support vector indicative of a correlation peak for the output data,
generating upper-side and lower-side support vectors which are neighbors along a spatial frequency spectrum for said at least one spatial frequency support vector,
providing, via correlation of the upper-side and lower-side support vectors and said at least one spatial frequency support vector, at least one new vector that is more refined along the spatial frequency spectrum for said at least one spatial frequency support vector, and
refining the at least one new vector by performing one or more of the steps of correlating, generating and providing in an iteratively manner.