公开(公告)号：US09910135B2

公开(公告)日：2018-03-06

申请号：US14760821

申请日：2014-01-07

Applicant: Autoliv Development AB

Inventor： Alan Jenkins ,  Jonathan Moss

IPC: G01S7/40 ,  G01S13/93

CPC classification number: G01S7/4056 ,  G01S13/931 ,  G01S2007/4069

Abstract: A self-testing method of a frequency-modulated continuous-wave (FMCW) radar device. A transmission signal having an object detection signal and a self-test signal superimposed on the object detection signal is transmitted. The self-test signal represents at least one virtual target. A reception signal is received. The reception signal is a received version of the transmission signal. Presence of the at least one virtual target in the reception signal is determined. A lack of presence of the virtual target in the reception signal provides an indication of hardware failure of the FMCW radar device.