Hello,
As I've mentioned in an earlier email to this list, I'm working on a small loop antenna with the purpose of monitoring solar activity. I am currently reading in the data through an RTL-SDR source, flowgraph attached.
For this project, I need to be able to let my antenna run for long periods of time (upwards of an hour or more, preferably several hours) in order to get a graph of signal intensity vs. time. Right now, my setup consists of the GNU Radio flowgraph attached, that produces a file which I analyze using a Python program to get a spectral plot and a time series (for one of the 1024 channels saved in the file).
I let my antenna and GNU Radio run for about 15 minutes last night collecting data, and the file size ended up at over 7 GB. I am wondering if there is any way to reduce the size of the file without tremendously reducing the quality of the data? I have a few ideas on this, but I'm hoping someone else will have better ones:
-Maybe I need to reduce the sample rate.
-Another option is to somehow just save the channel I need to the file, instead of all 1024. Does anyone have any advice as to how to accomplish that?
If you need any more information or if I should clarify anything, please let me know. Thanks!
Ellie
plotData.py
rtl-sdr.grc