South Korea-based Hyundai Mobis has developed new rear-autonomous emergency braking (R-AEB) technology using ultra short-range radar (USRR).

R-AEB systems generally use ultrasound sensors and cameras. This is the first instance that radar sensors have been used in place of ultrasound sensors.

The new technology detects objects behind the car and forcefully stops the vehicle if the driver does not apply the brakes.

Hyundai Mobis noted that the new technology has a quick response and offers a wider detection range, which helps to prevent unexpected backover crashes.

The radar overcomes the drawbacks of ultrasound, which can be affected by wind or noise, and camera technology, which is unable to identify objects in the dark.

To ensure the use of radar in parking assist technology, Hyundai Mobis developed USRR to detect objects in ultra-short range.

During the development phase, the company also secured technologies such as sensors and control algorithms, after which it applied for a patent.

Hyundai Mobis’ USRR is capable of detecting objects up to 5m away, as compared to 3m by ultrasound sensors.

USRR can also detect obstacles in unfavourable conditions as it uses electromagnetic waves.

Hyundai Mobis carried out tests for the technology in 12 situations. The technology has also been verified by Euro-NCAP and the US Insurance Institute for Highway Safety (IIHS) R-AEB tests.

Hyundai Mobis APS design director Cho Sung-woo said: “Hyundai Mobis has successfully finished validation of performance reliability of the R-AEB equipped with USRR in ride testing.

“We will actively discuss the application and productions of the technology with domestic and foreign automakers.”

In July last year, Hyundai Mobis developed a customised steering system for autonomous vehicles.