On Mon, 8 Nov 2010 19:01:19 +1100 Elizabeth Dodd <[email protected]> wrote:
> On Mon, 8 Nov 2010 15:02:10 +1100 > Peter Ross <[email protected]> wrote: > > > An australian company which can provide gps signals inside > > buildings, urban canyons, etc., etc. > > > > http://www.abc.net.au/rn/scienceshow/stories/2010/3058425.htm > > > > See also > > > > http://www.locatacorp.com/technology.html > > > > > I presume that this is just differential GPS (DGPS), a technology well > known to surveyors, who own their own units or hire access to one. > Perhaps Locata is cheaper. > I tried to download two of the technical papers but neither pdf would > open so I haven't been able to confirm the details. > RTK-GPS with the augmentation signals from more than one transmitter. Transmitted on a different band to satellite GPS signals and "proprietary synchronization technology" _______________________________________________ Talk-au mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-au
