[OpenRelief Developer] Looking for a role in data acquisition and distribution

[Andrew Back]

On 14 June 2012 09:52, Karl Lattimer <karl at qdh.org.uk> wrote:
>>
>> So, what I'd imagined was a ruggedised tactical computer/comms hub
>> based on one of the Tegra 2 boards, which would communicate with local
>> ground based sensors and drones. Acting also as a WLAN access point
>> and serving control/monitoring web apps to local users, and providing
>> a means of uploading data to somewhere via e.g. GPRS/3G/sat terminal.
>
> I'd rather we use the tegra2 s for heavy lifting work with opencv on board, they're pretty fast boards and we shouldn't waste CPU cycles. They also should be capable of doing opencv GPU routines which is a big win for us.

Right, but one part I'd omitted in that last e-mail was using rtl-sdr
(e.g. for monitoring spectrum for interference and to find channels to
use, and for identifying other comms in use) and software-defined
radio is *heavy* lifting. Also why wouldn't we want to try and
centralise some of the other heavy lifting, instead of sticking it all
in the air?

> We could use OpenWRT on some simple off the shelf linksys arm boxes for the comms hubs? Might make things easy.

Nothing like the resources we'd need even if we dropped the SDR
component, sadly. We'll need to drive many radios, run HostAP and a
web app to serve local clients, and perhaps run PPP at high data rates
over wireless links to the outside world. Tiny little SoCs with very
little RAM and even less flash just won't cut it.

Best,

Andrew

-- 
Andrew Back
http://carrierdetect.com