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HDS7000, Scanning
3.3
Unfavorable
surfaces
Unfavourable
weather conditions
Ambient Conditions
•
Highly reflective (polished metal, gloss paint)
•
Highly absorbent (black)
•
Translucent (clear glass)
Color or powder these surfaces before scanning.
•
Rain, snow or fog cause poor measurements, so it is not possible to
survey during these conditions!
•
Surfaces that are directly illuminated by the sun have an increased range
noise and therefore a larger measurement uncertainty.
•
If some objects are scanned against the sunlight or a bright spotlight, the
optical receiver of the instrument can be dazzled so heavily that in this
area no measured data is recorded. A "black hole" appears in the reflect-
ance image.
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