FMCW vehicle radar system
AssigneeVeoneer Sweden AB
InventorJonathan Moss
Life of this patent
Estimating the term…
Loading patent…
AssigneeVeoneer Sweden AB
InventorJonathan Moss
Estimating the term…
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).
A vehicle radar system comprising, a control unit and a signal generator that is arranged to generate a least one Frequency Modulated Continuous Wave (FMCW), chirp signal, where the chirp signal comprises a corresponding plurality of frequency ramps, and where each frequency ramp within the plurality of frequency ramps runs from a first frequency to a second frequency, wherein when a frequency ramp has reached the second frequency, the control unit is arranged to control the signal generator to start outputting an output signal with an output frequency for initializing a further frequency ramp by a frequency control signal corresponding to a desired frequency, where the desired frequency is formed of an initial desired frequency part and at least one further desired frequency part, where the initial desired frequency part runs from the second frequency to an intermediate frequency having a magnitude between the first frequency and the second frequency, and where the further desired frequency part runs from the intermediate frequency to the first frequency for the further frequency ramp, where the duration of the initial desired frequency part falls below the duration of the further desired frequency part.
A method for operating a vehicle radar system comprising the steps of,
Dependencies are inferred from the claim text.