Why does a LiDAR sensor require GPS?
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| Download | VLP-16 User Manual.pdf |
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Why does a LiDAR sensor require GPS?
GPS enhances the accuracy of LiDAR by synchronizing its clock with the LiDAR’s clock.
In the Velodyne LiDAR VLP-16, the interface box’s GPS is used to precisely synchronize the sensor’s timestamp with GPS time.
This is detailed in the official Velodyne manual.
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7.4 GPS, Pulse Per Second (PPS) and NMEA Sentence
Your sensor can synchronize data with precise GPS-supplied time. Synchronizing to a GPS-supplied Pulse-Per-Second (PPS) signal provides the ability to compute the exact firing moment of each data point as required by some geo-referencing applications. See Time Synchronization on page 125 for details on GPS time synchronization and how important it is for associating sensor data with the sensor’s environment.
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