[OSM-talk] High-Precision GPS Survey Equipment?

Ævar Arnfjörð Bjarmason avarab at gmail.com
Mon Aug 25 22:48:21 BST 2008


On Mon, Aug 25, 2008 at 9:44 PM, Andy Robinson (blackadder-lists)
<ajrlists at googlemail.com> wrote:
> The way surveyors get around this problem (yes even the best GPS systems
> cant see around corners) is to take 8 waypoints by sighting down the edge of
> a building (2 points for each side). You can then draw the shape where the
> lines intersect. This is how the Ordnance Survey do it for instance (using
> an optical square to improve accuracy).

This is what I generally do when I need to survey buildings but it can
get hard in some situations when there are buildings everywhere and
you can't find a good point to do even this.




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