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Aerial LiDAR files Adjust on Import to TBC

  • 1.  Aerial LiDAR files Adjust on Import to TBC

    Posted 4 hours ago

    Hello,

    I am working in a grid project that has terrestrial scanning via the SX10 imported into it, along with your GNSS RTK and total station measurements.  This project has a sub consultant that provided aerial LiDAR and those aerial lidar files are tiled so that they have nice round northing and eastings at the edges.  The aerial company also provided tiled aerial images on the same tiling scheme.

    This project is on state plane projection and is on the grid.

    When i import the LiDAR files i am pretty sure that the lidar file is being scaled from the origin, (0,0), by what a combined scale factor would be for the area I am working.  The discplacement from where the lidar file is coming in to where the tile lines are and that ratio is almost perfectly identical to a combined scale factor at this project location.

    I have tried all of the options on import, none of them work.  They all displace the lidar point cloud.

    Why can't Trimble Business Center just leave the file alone and import the points of the point cloud where the LiDAR file says they are?  

    I am hoping someone has seen this before and can offer a solution.

    If I start a project with no terrestrial data, and have the TBC file set to scale only, the LiDAR point cloud files come in great and as expected.  Until i import the first terrestrial SX10 scanning data, then the LiDAR tiles transform to the same location as i was seeing to begin with.

    If you have experienced this and know a solution, I would appreciate the help.  Thank you.



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    Clayton Bradshaw
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