[hpsdr] special 2Rx RA version of OpenHPSDR PowerSDR

[Warren C. Pratt]

Hi Glenn,

I don't recall the details of your original post.  However, what is 
returned from the call Joe references is the "peak" value of the 
signal.  Every sample in each buffer of data is checked to determine if 
it establishes a new peak value.  There is a decay time constant applied 
to this value before conversion to dB; otherwise, we'd have a peak-hold 
situation.  The default time constant (which I believe is being used) is 
0.1 seconds.

73,
Warren  NR0V

>
> The specific calls I use in the RA utility to obtain Rx1 and Rx2 power 
> levels are:
>
>       sig_level += wdsp.CalculateRXMeter(0, 0, 
> wdsp.MeterType.SIGNAL_STRENGTH);
>       sig_level2 += wdsp.CalculateRXMeter(2, 0, 
> wdsp.MeterType.SIGNAL_STRENGTH);
>       RA_count = RA_count + 1;
>
> where the two signal levels are summed as many times as the user has 
> specified in the “# of measurements to average” control in the RA 
> window then the sum is divided by the value “RA_count" to obtain the 
> average power value for each receiver over the interval that has been 
> selected by the user.
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20150831/8eb1af6a/attachment-0002.htm>