Changes between Version 1 and Version 2 of Sensors/LeicaLIDAR/FWEmmasNotes


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Timestamp:
Feb 23, 2010 9:29:46 AM (10 years ago)
Author:
emca
Comment:

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  • Sensors/LeicaLIDAR/FWEmmasNotes

    v1 v2  
    1515
    1616Intensity is digitised at either 1 or 2 nano seconds with either 256, 128 or 64 samples recorded. [[BR]]
    17 1ns represents 15cm/256 samples --> max. collection of 38.4 meters (25615cm). [[BR]]
    18 If it is known that the height is under 19 meters, then can change to a lower sampling rate (128@1ns --> 19.2m or 256@2ns --> 19.2m)
     171ns represents 15cm/256 samples --> max. collection of 38.4 meters (256*15cm). [[BR]]
     18
     19       ||Sample depth /interval|| Equivalent tree height||
     20       ||   256 @ 1 ns || 38.4m ||
     21       ||   128 @ 1 ns || 19.2m ||
     22       ||   256 @ 2 ns || 76.8m ||
     23       ||   128 @ 2 ns || 38.4m ||
     24       ||   64 @ 2 ns || 19.2m ||
     25
     26If it is known that the height is under 19 meters, then can change to a lower sampling rate (128@1ns or 256@2ns).[[BR]]
     27If flying over flat(ish) terrain, then can reduce to a lower sample depth without loss of useful information.
    1928
    2029Two separate outputs: [[BR]]