US 11,733,365 B2
Radar system having a clock pulse generator integrated into a central control unit
Marcel Mayer, Lonsee (DE); and Michael Schoor, Stuttgart (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Appl. No. 16/765,466
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Nov. 8, 2018, PCT No. PCT/EP2018/080638
§ 371(c)(1), (2) Date May 19, 2020,
PCT Pub. No. WO2019/137654, PCT Pub. Date Jul. 18, 2019.
Claims priority of application No. 102018200395.5 (DE), filed on Jan. 11, 2018.
Prior Publication US 2020/0278436 A1, Sep. 3, 2020
Int. Cl. G01S 13/34 (2006.01); G01S 7/00 (2006.01); G01S 7/35 (2006.01); G01S 13/931 (2020.01); G01S 7/03 (2006.01)
CPC G01S 13/34 (2013.01) [G01S 7/003 (2013.01); G01S 7/03 (2013.01); G01S 7/35 (2013.01); G01S 13/931 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A radar system for a vehicle, the radar system comprising:
a central control unit;
a plurality of radar sensor heads which each (a) is set apart from the central control unit and (b) includes a transmitting antenna for generating radar waves, a frequency synthesizer, a receiving antenna for receiving radar waves, which are reflections of the generated radar waves, and an analog-digital converter to convert the received radar waves into digital measuring data; and
at least one data line between the control unit and the plurality of radar sensor heads, wherein:
the central control unit (a) has a clock pulse generator configured to generate a reference frequency and (b) is configured to transmit the reference frequency via the at least one data line to each of the plurality of radar sensor heads;
the respective frequency synthesizers of each of the plurality of radar sensor heads is configured to implement the reference frequency transmitted by the central control unit to generate a carrier frequency of the generated radar waves of the respective radar sensor heads, wherein the radar system ensures that the data transmitted via the at least one data line are transmitted at a data rate of a number of bits per second that is higher than a value of hertz of the generated carrier frequency of the generated radar waves;
the plurality of radar sensor heads are configured to transmit, over the at least one data line, the digital measuring data generated by the respective analog-digital converters to the central control unit; and
the central control unit is configured to process the digital measuring data received from the plurality of radar sensor heads in time synchronization with one another.