Company: Beijing Autoroad Technology
Beijing Autoroad Technology:
Comparison of Onboard 4D Radar (Millimeter Wave & LiDAR)
Comparison of Onboard 4D Radar (Millimeter Wave & LiDAR)
Autoroad
November 8, 2025
16:38
Beijing
The following article is from Jane Zhao
Author: Jane Zhao
Jane Zhao
Watching Clouds Rise
Since 2021, onboard 4D millimeter wave radar has gained widespread attention. By mid-2024, the emerging technology direction of onboard 4D FMCW LiDAR sparked even greater attention. What’s the difference between this 4D and that 4D? Where are their respective core technologies? What are the future application prospects?
Simply put, whether it’s millimeter wave radar or LiDAR, 4D refers to radar detection information of a target, including the four dimensions of information: distance, horizontal information (angle), vertical information (angle), and velocity, collectively referred to as 4D information.
Onboard millimeter wave radar has a relatively long development history. Since 2000, its mainstream technologies i
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