35
Note:
When PTP is selected as the clock source, the lidar no longer outputs GPS
packets and the time unit changes to nanoseconds (ns). The Timestamp and
Date & Time in the point cloud packets will be synchronized strictly according
to the time signal provided by the PTP master clock.
If PTP has been selected as the time source and no PTP master clock is currently
available, the lidar will start timing from the internal default start time (00:00:00
on 1 January 2000); if a PTP time source is provided and then interrupted, the
lidar will continue timing from the time of the interruption.
6.4 Lidar Internal Timing
When there is no GPS and other equipment to synchronize, the lidar uses 1
second (1*10
9
ns) as the cycle, with microsecond as the timing unit, and the
timing value is output as the timestamp of the data packet. At this time, there is
no UTC time reference. If UTC time is required, it must be written through the
configuration package, otherwise the UTC time output information of the device
package will be invalid.
7. Angle and Coordinate Calculation
7.1 Vertical Angle
Each channel of the C32 lidar corresponds to a fixed vertical angle, see the table
below.
Table 7.1 C32 Vertical Angle (1° Uniform distribution)
To Next Page
Loading...