According to foreign media reports, many Silicon Valley companies are hoping to take a share of this emerging market business of autonomous vehicles. Recently, Aeva, a start-up company, turned out to occupy a large edition of The New York Times. Its technological breakthrough was to create a single sensor that combines the functions of lidar and radar to measure the distance between nearby objects Location and speed. Most experts agree that three types of sensing devices are best equipped for autonomous vehicles: cameras, lidar and radar, which need to integrate the functions of three types of sensing devices and build a comprehensive platform. The camera aims to probe the shape of the target, but the device can not detect its distance and speed of movement. To do this, you need to use laser radar to distance measurement, while the radar can give a precise prediction of the target speed. Of course, this argument is too simplistic. In automotive applications, the resolution of the image is low when the vehicle is measuring the speed of the radar, while the lidar provides a 3D high-definition map of the surroundings of the vehicle. Allegedly, Aeva sensors are designed to provide good speed data. While current lidar sensors send separate pulses, Aeva sensors send a continuous wave of light that can read more complex signal bounces of peripheral targets that capture sharpness Higher degree of image, but also to track the transmission speed. Of course, it is possible to combine the capabilities of both LIDAR and radar equipment with outstanding performance in probing depths and quick probing. In comparison to LIDAR devices, the device's continuous wave will provide greater detection range and resolution with better performance when dealing with highly reflective targets such as climate change and bridge railings , But also to avoid the interference of other optical sensors.