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Re: [Paparazzi-devel] Multi tiered telemetry solution

From: Gareth Roberts
Subject: Re: [Paparazzi-devel] Multi tiered telemetry solution
Date: Wed, 07 Mar 2012 17:43:45 -0000
User-agent: Opera Mail/11.60 (Linux)

It's link isn't it?


On Wed, 07 Mar 2012 16:55:22 -0000, Tilman Baumann <address@hidden> wrote:

I must have fallen on my head today.
Can someone point me to the code that runs the serial telemetry link in the ground segment?
I suppose there is a programme that parses that and lifts it into ivy?

This is, where I would think I would have to attack the problem...

On 06/03/12 16:32, Tilman Baumann wrote:
I have been wondering for a while if it would be feasible to have some kind of tiered structure for different telemetry links.
Most links have their distinct advantages but also disadvantages.

I was thinking to have WLAN for short range via on-board computer. (Telemetry via UDP and video/image capture)
RF for mid range.
And 3g/UMTS for fall-back. (Has anyone tried this before on paparazzi? ArduPilot seems to have that as a viable option.)

Those links have obviously very different round trip times, bandwidth and reliability. So the amount of data sent back would have to be dynamically adapted. I don't think the code has such a concept yet, but does anyone think it can be easily done? I'm actually contemplating some kind of bridge right now that takes a full speed telemetry downlink via serial that has some knowledge about the message types in order to chop off messages that will not fit the selected downlink.

I'm just thinking loud here. But if the ideas are viable I would perhaps like to invest some energy to test those...

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