Re: [Discuss-gnuradio] Some noodling

[Johnathan Corgan]

On Tue, Aug 19, 2008 at 2:00 PM, Marcus Leech <address@hidden> wrote:

> Controlling the switching function is no problem.   But processing the
> samples as they come in has me a bit stumped,
>   unless I write a custom-processing block.

This is your best bet.

> So, the input switches at some rate (a few Hz), which means that the samples
> sometimes represent the "sky", and
>  sometimes represent the calibrator.  I can tag the samples so that samples
> that come in during the time when
>   the input is "sky" will be positive, and those that come in during
> "calibration" will be negative.

It's pretty straightforward to write a new block that only passes
positive samples (or negative, depending on a constructor parameter.)
Then you'd attach two of these to the output of your usrp block and
you'll have the two streams you need.

-- 
Johnathan Corgan
Corgan Enterprises LLC
http://corganenterprises.com/