# US 2022/0276367 A1 · Vehicle radar system

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- Number: US 2022/0276367 A1
- Document ID: US20220276367A1
- Status: Published application
- Kind: A1
- Application number: 17/662,122
- Filed: 2022-05-05
- Published: 2022-09-01
- Earliest claimed: 2019-11-07
- Assignees: Denso Corporation
- Applicants: Denso Corporation
- Inventors: Yutaka HASEGAWA
- Web page: https://patentgrep.com/patent/US20220276367A1

## CPC

- G01S 7/0235: {Avoidance by time multiplex}
- G01S 7/0231: {Avoidance by polarisation multiplex}
- G01S 7/0232: {Avoidance by frequency multiplex}
- G01S 13/343: {using sawtooth modulation}
- G01S 13/87: Combinations of radar systems, e.g. primary radar and secondary radar
- G01S 13/931: of land vehicles
- G01S 2013/93271: {in the front of the vehicles}
- G01S 2013/93272: {in the back of the vehicles}
- G01S 2013/93274: {on the side of the vehicles}
- G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES

## Abstract

A vehicle radar system according to one aspect of the present disclosure includes a first radar device, a second radar device, and a third radar device. The first radar device transmits a first radar wave for which a transmission period or a transmission frequency is different from transmission periods or transmission frequencies of a second radar wave to be transmitted from the second radar device and a third radar wave to be transmitted from the third radar device. The second radar device transmits the second radar wave for which transmission polarization or a transmission beam direction is different from transmission polarization or a transmission beam direction of the third radar wave to be transmitted from the third radar device.

## Claims

### Claim 1

A vehicle radar system comprising:
a first radar device mountable to a vehicle;
a second radar device mountable to the vehicle; and
a third radar device mountable to the vehicle, wherein
the first radar device is configured to transmit a first radar wave for which a transmission period or a transmission frequency is different from transmission periods or transmission frequencies of a second radar wave to be transmitted from the second radar device and a third radar wave to be transmitted from the third radar device, and
the second radar device is configured to transmit the second radar wave for which transmission polarization or a transmission beam direction is different from transmission polarization or a transmission beam direction of the third radar wave to be transmitted from the third radar device.

### Claim 2 (depends on 1)

The vehicle radar system according to claim 1, wherein
the first radar device is configured to transmit the first radar wave for which the transmission period is different from the transmission periods of the second radar wave to be transmitted from the second radar device and the third radar wave to be transmitted from the third radar device, and
the second radar device is configured to transmit the second radar wave for which the transmission polarization is different from the transmission polarization of the third radar wave to be transmitted from the third radar device.

### Claim 3 (depends on 1)

The vehicle radar system according to claim 1, wherein
the first radar device is configured to transmit the first radar wave for which the transmission frequency is different from the transmission frequencies of the second radar wave to be transmitted from the second radar device and the third radar wave to be transmitted from the third radar device, and
the second radar device is configured to transmit the second radar wave for which the transmission polarization is different from the transmission polarization of the third radar wave to be transmitted from the third radar device.

### Claim 4 (depends on 1)

The vehicle radar system according to claim 1, further comprising:
a fourth radar device mountable to the vehicle, wherein
the fourth radar device is configured to transmit a fourth radar wave for which a transmission period, a transmission frequency and transmission polarization are the same as the transmission period, the transmission frequency and the transmission polarization of the second radar wave to be transmitted from the second radar device, and
the second radar device and the fourth radar device are configured to be mounted diagonally opposite on the vehicle.

### Claim 5 (depends on 1)

The vehicle radar system according to claim 1, further comprising:
a fifth radar device mountable to the vehicle, wherein
the fifth radar device is configured to transmit a fifth radar wave for which a transmission period, a transmission frequency and transmission polarization are the same as the transmission period, the transmission frequency and the transmission polarization of the third radar wave to be transmitted from the third radar device, and
the third radar device and the fifth radar device are configured to be mounted diagonally opposite on the vehicle.