Changes between Version 2 and Version 3 of Sensors/LeicaLIDAR/MarksNotes


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Timestamp:
Aug 22, 2008 5:11:12 PM (11 years ago)
Author:
mark1
Comment:

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  • Sensors/LeicaLIDAR/MarksNotes

    v2 v3  
    234234   * These are the points which can be used as a model (?)
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    243 Figure 1. Cross section of opposing flight lines (red and black) with a roll (boresight) error.  Small difference between flight lines at nadir, larger error at swath edges.
    244 Figure 2. Plan view of opposing flight lines. A pitch error will result in a (sloped) feature being moved along track, this is easy to spot when comparing cross sections of the opposing flight lines. The pitch slope error causes a “smile effect” to the data.
    245 
    246 Figure 3. Check for torsion corrections on a cross flight. Line 1 (black) will see no effect at points B and D, whereas line 2 (red) will show full effect at these points.  The opposite is true for points A and C.  Using TerraScan to view cross sections at these 4 points should highlight if there is a torsion correction to be made.
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    249236== Summary of work required ==
    250237
     
    277264   * ALS estimate 2-3hrs
    278265   * QCing 2-3hrs
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     269=== Figure captions ===
     270
     271Figure 1. Cross section of opposing flight lines (red and black) with a roll (boresight) error.  Small difference between flight lines at nadir, larger error at swath edges.
     272
     273Figure 2. Plan view of opposing flight lines. A pitch error will result in a (sloped) feature being moved along track, this is easy to spot when comparing cross sections of the opposing flight lines. The pitch slope error causes a “smile effect” to the data.
     274
     275Figure 3. Check for torsion corrections on a cross flight. Line 1 (black) will see no effect at points B and D, whereas line 2 (red) will show full effect at these points.  The opposite is true for points A and C.  Using TerraScan to view cross sections at these 4 points should highlight if there is a torsion correction to be made.
     276