User's Manual

1.1
Operational Principles
1.1.1 Distance Measurement: Time of Flight (ToF)
A laser diode emits a beam of ultrashort pulse laser on to the object.
Diffuse reflection of the laser occurs upon contact with the target object. Reflected beams are detected by the optical sensor.
Distance to object can be accurately measured by calculating the time between emission and receipt by the sensor.
1.
2.
3.
Figure 1.1 ToF Formula
d= ct
1
2
d：Distance
c：Speed of light
t：Laser beam travel time
Pandar40 is a 40-channel mechanical LiDAR. It creates 3D imaging by 360° mechanical rotating through 40 laser diodes inside the housing.
Pandar40’s unique channel distribution makes it more suitable for autonomous driving applications.
In addition to the specifications of Pandar40, this manual also describes the mechanical installation, data outputs format, and GPS
timestamp synchronization.
This manual is undergoing constant revision and improvement, please ask Hesai for the lastest version of the user’s manual.
Introduction1
-01-