[talk-au] Mass realignment of roads? (was Mapping things by importance)

[Delta Foxtrot]

--- On Fri, 12/6/09, Liz <edodd at billiau.net> wrote:

> But we can improve the accuracy over time as DF notes.

Well according to wikipedia, there are 31 US NAVSTAR sats broadcasting, the chinese are planning to put up 35, the europeans are planning 27 and the russians plan to have their system back up to 30 by 2011.

All going well to their respective planning there will be in excess of 120 sats broadcasting on several diff diff frequencies which will eliminate virtually all positioning errors relative to WGS84.

This means we should see accuracy into the sub-metre range or sub-centremetre range for consumer grade hand held devices. Surveryors who currently spend large chunks of cash getting that sort of accuracy now, will be into the sub-mm range.

While the maps might look strange until they are fixed I still think taking advantage of more accurate information where possible is beneficial even if it doesn't seem like it at the time with maps potentially looking weird, otherwise it just shifts the work to someone else later on that is annoyed by the incorrect placement of POIs or roads to fix up.