[talk-au] Locata augmenting GPS in GPS hostile areas

[Elizabeth Dodd]

On Mon, 8 Nov 2010 19:01:19 +1100
Elizabeth Dodd <edodd at billiau.net> wrote:

> On Mon, 8 Nov 2010 15:02:10 +1100
> Peter Ross <peter at emailross.com> 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"