Re: [Rats] Location Claim

[Henk Birkholz <[e-mail]>]

Hi all,

in general, you might also want to have a look at "The GeoJSON Format" 
(RFC7946) that is based on this work:

> https://geojson.org/geojson-spec

Viele Grüße,

Henk


On 30.07.20 11:00, Hannes Tschofenig wrote:
> Dear EAT draft authors,
> 
> I believe the location claim defined in the EAT spec can benefit from 
> further clarification.
> 
> I think you want to focus on systems that obtain location information 
> via a GPS receiver. Is this correct?
> 
>  From the short text I understand that you want to support a 2d point, a 
> 3d point, a circle (i.e. the point with a radius) and a sphere (the 3d 
> version of the circle).
> 
> (More about location shapes can be found in RFC 5491..)
> 
> If you also want to express uncertainty and confidence then you may want 
> to look at RFC 7459.
> 
> You are also interested to express dynamic location. You might want to 
> look at RFC 5962 and add orientation too. Dynamic location is obviously 
> pretty tricky in the context of an attestation based mechanism because 
> dynamic location, as the name indicates, changes frequently. In 
> location-based systems there is often the desire to express some time 
> series data or average the measured data over a certain timeframe.
> 
> I would recommend using the terms from the above-mentioned RFCs when it 
> comes to location because they have been again re-used from the OGC, the 
> Open Geospatial Consortium.
> 
> This would produce something like:
> 
>   * 2d Point: Lat/long
>   * 3d Point: lat/long/alt
>   * Circle: lat/long/radius
>   * Sphere: lat/long/alt/radius
>   * For dynamic location add speed, orientation, and heading to the
>     above shapes. 
> 
> Ciao
> 
> Hannes
> 
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