US 11,747,459 B2
Radar sensor system
Michael Klar, Magstadt (DE); and Michael Schoor, Stuttgart (DE)
Assigned to ROBERT BOSCH GMBH, Stuttgart (DE)
Appl. No. 16/976,852
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Mar. 14, 2019, PCT No. PCT/EP2019/056387
§ 371(c)(1), (2) Date Aug. 31, 2020,
PCT Pub. No. WO2019/233645, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 102018208992.2 (DE), filed on Jun. 7, 2018.
Prior Publication US 2020/0408890 A1, Dec. 31, 2020
Int. Cl. G01S 13/931 (2020.01); G01S 13/34 (2006.01); G01S 13/00 (2006.01); G01S 7/02 (2006.01)
CPC G01S 13/343 (2013.01) [G01S 7/023 (2013.01); G01S 7/0232 (2021.05); G01S 7/0235 (2021.05); G01S 13/003 (2013.01); G01S 13/931 (2013.01); G01S 2013/9314 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A radar sensor system, comprising:
an evaluation device; and
at least two radar sensors, each of the at least two radar sensors having at least one transmitter and at least one receiver, wherein:
detection regions of the at least two radar sensors overlap at least partially, the at least two radar sensors being situated at a defined distance from one another; and
the radar sensor system is configured to perform a detection in a manner that compensates for a frequency offset between a first of the at least two radar sensors and a second of the at least two radar sensors by an operation that includes:
operating the first and second radar sensors alternatingly, cycling, by switching after each passage of a predefined interval, between (a) a first state in which the first radar sensor functions as a signal transmitter and not as a signal receiver and the second radar sensor functions as the signal receiver and not as the signal transmitter and (b) a second state in which the second radar sensor functions as the signal transmitter and not as the signal receiver and the second radar sensor functions as the signal receiver and not as the signal transmitter; and
detecting an object, using the evaluation device, based on a combination of signals received in both of the first and second states achieved by the cycling.