Re: [Discuss-gnuradio] Use of bin_statistics

[Paul Mathews]

Firas A. wrote:
> 
> Hi,
> 
> 
>>  Paul Mathews <address@hidden> wrote:
>> use "--tune-delay" with 10e-3 
>>
>> Based on the above, I'd expect an integer tune delay parameter.
>> Is 10e-3 just a way of specifying a value smaller than 1, so 
>> there's no tune delay?
> 
> The tune delay timing parameter passed to bin_statistics is 
> calculated in FFT frames which depends on USRP rate and FFT 
> length as in :
> 
> tune_delay_passed_to_bin_stats =
> int(round(required_tune_delay_in_sec*usrp_rate/fft_size))
> 
> if this calculated value is less than "1", then we should make 
> it at least "1" FFT frame.
> 
> Regards,
> 
> Firas
> 
> 
I see now that usrp_spectrum_sense.py rescales the timing parameters to
seconds before passing them to bin_statistics. Thanks.

-----
Paul Mathews
Design Services: non-contact sensors, RFID, collision avoidance, EMI
compliance
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