[acao-it] ACAO Tracking Protocol

[Thomas Sevaldrud]

This is very good Daniele! Have a nice vacation :-)

- Thomas

On Tue, Jul 7, 2015 at 12:08 PM, Daniele Orlandi <daniele at orlandi.com>
wrote:

> On 06/07/2015 15:52, Thomas Sevaldrud wrote:
> > Hi again,
> >
> > 1. Interpolation:
> >
> > * We need a fairly steady stream of fixes, with an interval of 5 seconds
> > or less for the animations to look good.
>
> Okay, most fixes will have a 1-second resolution.
>
> > * We do our own interpolation on the client side, so we do not need the
> > server to interpolate missing fixes. This will probably just do more
> > harm than good.
>
> Okay, seems fair.
>
> > * We can handle missing fixes, but if these fixes are in a turn point
> > sector, the scoring will break down.
>
> The considerations I made in my previous email stand.
>
> > Also if we lose fixes while the
> > glider is circling or doing other maneuvers the interpolation will make
> > the animated glider do strange things, since we have no way of knowing
> > which way the glider is moving.
>
> Let me do some measurement so that we will be able to understand how big
> of a concern this would be.
>
> > * Since the devices can not buffer and retransmit the missing fixes
> > later, the main focus should be on getting the best possible coverage,
> > especially near turn points to avoid outages.
>
> Agreed.
>
> > 2. Polling/Broadcasting
> >
> > * We need a polling server which we can query for the full history of
> > each flight in order to do competition scoring
>
> Up and running already, just need some testing.
>
> > * This polling server should associate the relevant flights for a
> > competition day with the task/pilot info, preferrably through a SeeYou
> > CUC file as specified in the existing Silent Wings/vPos protocol.
>
> Okay, it's implemented already, I just have to implement a small GUI to
> be able to upload the task CUC file when the task is set.
>
> > * The server could also have a way of simply listing all flights that
> > are active so we can test this without having to set up a competition
> > for all the gliders.
>
> Yes, this could be done easily. We already have a web-based
> visualization interface, I could just add a way to see the tracker ID
> that you could use to retrieve data for that flight.
>
> > As soon as we get access to a running tracker server we will start
> > testing, and hopefully we'll soon see how this works in practice.
>
> Okay, I will give you the details as soon as possible.
>
> Bye,
>
> --
>   Daniele Orlandi
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.acao.it/pipermail/it/attachments/20150707/8b522159/attachment.html>