Huawei 4D Imaging Radar excellent features2021-04-23
Huawei introduced a new generation of smart components and solutions, including 4D imaging radar, AR-HUD and MDC810. Huawei’s high resolution 4D imaging radar uses the 12T24R large antenna array (12 transmission channels, 24 receive channels), officially claimed to be 24 times higher than the antenna configuration of traditional millimeter wave radar 3T4R, and typical imaging radars in the industry. High resolution Huawei 4D imaging radar can see the car ahead.
Compared to LIDAR and cameras, the millimeter wave radar appears to have excellent speed measurement capabilities, excellent weather and lightfastness (unaffected by light, rain and snow), and unique detection capabilities for non-visual distance concealed targets.
High resolution 4D imaging radar inherits these advantages while significantly improving resolution, target detection confidence, and detection range (eg distance and FOV), while developing a high-density point cloud-like LIDAR, environmental depiction, radar composition, positioning, etc. As a result, it can provide better 360 ° detection around the vehicle through the fusion of multiple radars at the point cloud level.
Huawei believes the next evolution of the millimeter wave is high resolution 4D imaging radar; 4D refers to the detection of four dimensions of the target, including its speed, distance, horizontal angle and vertical angle, while traditional radar horizontal resolution is not sufficient, does not support vertical resolution and results in blind vision.
Lack of perception is one of the major causes of autonomous driving accidents in recent years, such as the inability to effectively identify fixed vehicles or accident vehicles, and improper judgment of isolation piles or guardrails leading to serious accidents.
Huawei 4D imaging radar is gradually approaching the ideal sensor target that will form effective fusion and redundancy with the camera and LIDAR, significantly improving the horizontal and vertical angle measurement capability to meet the perceived requirements of a complete target, full coverage and multiple operating conditions. According to the introduction, Huawei’s high resolution 4D imaging radar realizes the intergenerational improvement of the capability in 3 aspects:
- First, wide array high resolution: Huawei’s high resolution 4D imaging radar uses 12 transmission channels and 24 receive channels, which is 24 times higher than traditional millimeter wave. imaging radar. This is also the largest antenna configuration imaging radar available for mass production in the short run.
- The second is a wide field of view without blur: the horizontal field of view is increased from 90 ° to 120 °, the vertical field of view is increased from 18 ° to 30 °, and the longitudinal detection distance is more than 300 meters from 200 meters.
- Third, 4D high density point cloud: 4D point imaging radar cloud including speed, distance, horizontal angle and vertical angle has an additional dimension of velocity compared to LIDAR point cloud which can have more dimension to interpret the target. object.
Huawei’s high resolution 4D imaging radar is reported to be able to provide comfortable braking at 130 km / h when the front is blocked; The cone bucket detection distance reaches 110 meters, and it can also provide the guardrail fixed car discrimination.
Also, concealed or partially obscured target perception is a unique millimeter wave feature. 4D imaging radar can see the car ahead, the car ahead and the car in front. It can even see the approximate chassis outline of the car in front of it. By detecting the car in front, it can predict the movement of the front car, for example if there is a sharp deceleration, and reduce the risk of serial rear closure.
In Huawei’s view, the 4D imaging radar will definitely bring revolutionary changes and become the next essential asset for high-end autonomous driving.