In some cases hardware manufacturers and/or software are not properly setting the GPS Timestamps in an LAS file according to the LAS specification
. That specification dictates that the timestamp for LIDAR points be stored in either weekseconds or Adjusted GPS Standard time. This is very important as the tools within TerraScan
and other software expects the time in one of these formats in order to properly align the data with other data types. For instance, as the sensor trajectory when checking or modifying system calibration, or cutting overlap. To assist users, TerraScan introduced a tool that could be used to “fix” the timestamps associated with LIDAR point data.