公开(公告)号：US20180356495A1

公开(公告)日：2018-12-13

申请号：US15778504

申请日：2016-11-21

Applicant: Autoliv Development AB

Inventor： JONATHAN MOSS ,  ANDREAS LEFEVRE

IPC: G01S7/02 ,  G01S7/35 ,  G01S13/34 ,  G01S13/58 ,  G01S13/93

CPC classification number: G01S7/023 ,  G01S7/021 ,  G01S7/354 ,  G01S13/343 ,  G01S13/584 ,  G01S13/931 ,  G01S2007/356 ,  G01S2013/9375

Abstract: A vehicle radar system (3) having at least one transceiver arrangement (7) arranged to generate, transmit and receive reflected radar signals. The transceiver arrangement (7) includes an ADC arrangement (10) that is arranged to output a digital IF signal (20) in a time domain to a DSP arrangement (12). A first DSP function (12a) is arranged to: identify and retain sample points of the digital IF signal (20) in a spectral domain with signal components that exceed a certain level threshold, such that an approximation signal (36) is formed in the time domain, identify possible sections (37) of the digital IF signal (20) in the time domain that exhibit interference exceeding an interference threshold, determine whether or not to replace such sections (37) with equivalent sections (38) of the approximation signal (36), and if applicable, replace such sections (37) with equivalent sections (38) of the approximation signal (36).

公开(公告)号：US20180136328A1

公开(公告)日：2018-05-17

申请号：US15575257

申请日：2016-05-17

Applicant: AUTOLIV DEVELOPMENT AB

Inventor： JONATHAN MOSS

IPC: G01S13/93 ,  G01S13/34 ,  G01S7/35

CPC classification number: G01S13/931 ,  G01S7/354 ,  G01S13/343 ,  G01S13/584 ,  G01S2007/356 ,  G01S2013/9375 ,  G01S2013/9389

Abstract: A vehicle radar system having a signal generator (13) that generates a FMCW chirp signal (4) with a plurality of frequency ramps (r) running between a first frequency (fstart) and a second frequency (fstop). At the second frequency (fstop), the signal generator (13) is controlled to output an output signal (4) with an output frequency (Fout) for initializing a further frequency ramp (r′) using a frequency control signal (31) corresponding to a desired frequency (39) with an initial desired frequency part (39a) and at least one further desired frequency part (39b). The initial desired frequency part (39a) runs from the second frequency (fstop) to an intermediate frequency (fi) between the first and second frequency (fstart, fstop)), and the further desired frequency part (39b) runs from the intermediate frequency (fi) to the first frequency (fstart). The duration of the initial desired frequency part (39a) falls below the duration of the further desired frequency part (39b).