车盖上安装了五个激光雷达单元（LIDAR，光探测和测距）。
Perched atop the vehicle were fiveLIDAR (LIght Detection and Ranging) units.
与雷达和声纳技术相似，激光雷达(光探测和测距)的工作原理是通过向目标发射电磁波然后根据反射波构建图像。
Like its Cousins radar and sonar, lidar (light detection and ranging), works by broadcasting electromagnetic waves towards a target and then building up a picture from the reflection.
如谷歌自己所解释的那样，谷歌最近出品的无人驾驶汽车使用了摄像机、雷达探测器和激光测距仪来“看”前后左右的交通情况，并通过详细的地图来指引汽车在路上行驶。
As Google explains it, its automated cars use video cameras, radar sensors and a laser range finder to "see" other traffic and detailed maps to navigate the road ahead.
应用推荐