Patent ID: 11879990
Assignee: NXP B.V.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A method comprising:
receiving reflection signals in a radar circuit, in response to transmitted chirp sequences, as reflections from remote objects;
processing, in computer processing circuitry, data corresponding to the reflection signals and, in response, generating output data indicative of distance, velocity and/or angle information; and
via emulation circuitry, introducing a plurality of diagnostic data sets into the radar circuit to cause the radar circuit to process simulated reflection signals as though the simulated reflection signals are reflections from objects remote from the apparatus, each of the one or more sets of diagnostic data being respectively associated with one or more simulated targets and including a first effective signal delay to create the simulated reflection signals; and
testing front-end circuitry in the radar circuit, using the first effective signal delay to assess integrity associated with measuring the distance, using a second effective signal delay between the chirp sequences to assess integrity associated with measuring velocity, and using a third effective signal delay to assess integrity associated with measuring direction of arrival.