Very interesting.

Others may know more about the low level, but i think the main thing you
need is "monitor" mode. I think this allows capture of frames even if
they have errors, then in principle all you have to do is compare the
received frames to the known pattern of transmission.

I think it's worth picking hardware that has good driver support for the
measurements you want to make. Any kind of driver modifications are a
major undertaking unless you've been in that flow already.





(2013.10.26) rich...@mailwh.com:
> Howdy Linux experts. I am going to be running long-distance antenna
> tests with the PSAS rocket patch antenna and a directional receive
> antenna. I'm looking to operate 802.11 up to 100km in these tests.
> More details on the experiment will be forthcoming as I'd love to get
> some others involved for the actual tests.
> My current computer setup is Debian 7.2 i386 32-bit with the Alpha
> Networks AWUS051NH usb wireless cards we use already on the rocket.
> What I need to figure out now is two-fold: a good method for
> controlling and quickly switching the modes on the AWUS051NH. During
> testing I would like to be able to switch between channels, modes,
> encoding (802.11b or g) and power levels (on amps) automatically (or
> easily). This will allow me to test many configurations at various
> transmit levels in a short time.
> recommendations for software to analyze the signals and data transfer.
> As I cycle through these various modes I want to capture the transfer
> speed and bit error rate. As I get really far away I want to determine
> the minimum transmit power and its resulting maximum transfer rate and
> error-rate.
> I appreciate any advice you can provide. I don't use Linux a lot so
> appreciate any simplification you can do for me :-). I'm happy to
> follow tutorials if you can point me to any to achieve what I need.
> Regards, Richard Witherspoon e: rich...@mailwh.com c: 503-320-7730

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