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

Ævar Arnfjörð Bjarmason avarab at gmail.com
Mon Aug 25 18:22:17 BST 2008


On Mon, Aug 25, 2008 at 4:02 PM,  <simon at mungewell.org> wrote:
> Hi Ian,
> How much precision do you want/need? And apart from the fun of it, does it
> actually benefit OSM going to these lengths?

My fairly accurate Garmin 60CSx is still wildly inaccurate when I
position myself at the corner of a building and try to measure its
dimensions since the building and the surrounding blocks most GPS
signals. So more accurate surveying equipment would for one thing be
more useful in getting data of regular quality in areas where there's
bad reception.

There's also the whole use case of mapping things with <5m accuracy
where most GPS units start being very inaccurate.




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