--Martin
> -----Original Message-----
> From: Marc Linsner [mailto:mlinsner@cisco.com]
> Sent: Friday, 9 April 2010 10:26 PM
> To: Thomson, Martin; geopriv@ietf.org
> Subject: Re: [Geopriv] Consensus request: Relative location and
> encoding options
>
> Martin,
>
> Respectfully, PIDF-LO is a location object, not designed to carry
> point-by-point navigation information.
>
> -Marc-
>
>
> On 4/8/10 8:30 PM, "Thomson, Martin" <Martin.Thomson@andrew.com> wrote:
>
> > In the interests of Allan's continuing wellbeing, I'll not continue
> to re-run
> > the same points.
> >
> > Instead, I offer new information.
> >
> > A colleague just reminded me of a use case that was first raised ~3
> years ago
> > when I was working with the OMA [1] LOC group. OMA LOC are currently
> defining
> > detailed requirements for a new positioning protocol - LPPe - and
> amongst the
> > work items is work on SET (Device) to SET positioning.
> >
> > I'll continue to try to find the original presentation, but in lieu
> of that,
> > the synopsis is pretty simple.
> >
> >
> > Using GNSS signals, it is possible to determine the relative position
> of two
> > receivers with greater accuracy than the absolute position of either.
> >
> > As long as the receivers are close (on a planetary scale),
> atmospheric errors
> > are similar. This is what drives differential GPS, but it has wider
> > application.
> >
> > The most basic use case is relative navigation. One user can be
> given precise
> > directions to their target. Think of the tracking devices you see in
> the
> > movies: "your target is 732 meters away on a bearing of 73 degrees".
> >
> >
> > Option B doesn't support this application. Option A does.
> >
> > Given that the advantages of either are highly subjective, it seems
> better to
> > base decisions on something tangible.
> >
> > --Martin
> >
> >
> > p.s. For those with OMA portal access, this document might be
> interesting:
> >
> >
> <http://member.openmobilealliance.org/ftp/Public_documents/LOC/2010/OMA
> -LOC-20
> > 10-0058-CR_LPPe1_0_RD_HighAccuracyRelativePositioning.zip>
> >
> > For those without, I can provide the document. It is public.
> >
> >
> >
> > _______________________________________________
> > Geopriv mailing list
> > Geopriv@ietf.org
> > https://www.ietf.org/mailman/listinfo/geopriv
>
_______________________________________________
Geopriv mailing list
Geopriv@ietf.org
https://www.ietf.org/mailman/listinfo/geopriv
