Millimeter wave radar and laser radar comparison, laser radar and millimeter wave radar advantages and disadvantages

Having a high-level assisted driving system is a major feature of new energy vehicles, and for a set of assisted driving system radar is very critical, it is like human eyes used to identify obstacles on the road, so as to realize the automatic lane change, automatic deceleration and other operations. Now the radar used for assisted driving system is mainly millimeter wave radar and LiDAR, compared with other radar they have higher accuracy.

Comparison of millimeter-wave radar and LiDAR

1, measurement range

The maximum distance of millimeter-wave radar reaches 1 kilometer, while LiDAR is only 300 meters.

2, the measurement effect

millimeter-wave radar recognition ability in general, but because of good penetration ability so not easily affected by the weather environment; LiDAR high precision and fast response speed and is not easy to be interfered with, but poor penetration, easy to be affected by fog, rain and snow.

3, the price cost

The cost of both radar is relatively high, but the LiDAR to be more high.

After reading the above comparison of the advantages and disadvantages of LiDAR and millimeter-wave radar, we can find that millimeter-wave radar and LiDAR have their own strengths and weaknesses, in order to make up for their shortcomings, and generally also use very much other radar to do the auxiliary, for example, Xiaopeng Automobile P7 with 12 ultrasonic radar auxiliary 5 millimeter-wave radar; not long ago unveiled the Weimar M7 even more exaggerated, which used 7 8 million HD camera, 5 millimeter wave radar, 12 ultrasonic radar, 3 LiDAR, almost all kinds of radar.

Because of the high cost of LiDAR, it is generally only used in mid-range and high-end models, the above mentioned Weimar M7 with 3 LiDAR has been very exaggerated, and the recent Guangzhou Auto Show release of the Salon Mechatron is claimed to be equipped with 4 LiDAR.

However, car companies should note that it's not that the more LIDAR the better, excellent algorithmic logic is equally important.