Date:2010-12-01 14:47:14 (9 years 8 days ago)
Author:Werner Almesberger
Commit:b3c0b4bf62ba394e85a909d19b8ec71bd6a9b074
Message:usrp: update filtering and display for uncorrupted measurement setup

We now have a much wider dynamic range of the signal (with better SNR).
The outliers are mainly WLAN interferences.

- usrp/evscan: changed threshold from -50 dB to -70 dB
- usrp/evscan: increase outlier tolerance from 2 dB to 10 dB
- usrp/plscan: changed display range from [-35:-25] to [-40:-5]
Files: usrp/evscan (1 diff)
usrp/plscan (1 diff)

Change Details

usrp/evscan
1818for f in "$1"/24*; do
1919    echo -n `basename "$f"` ''
2020    for n in "$f"/data*; do
21    ./fft $opts -s 100 0 20 50 <"$n" || echo "fft failed for $n" 1>&1
22    done | ./range -v 2
21    ./fft $opts -s 100 0 20 70 <"$n" || echo "fft failed for $n" 1>&1
22    done | ./range -v 10
2323done
usrp/plscan
1919set xlabel "MHz"
2020set ylabel "dB"
2121set xrange [2402:2483]
22set yrange [-35:-25]
22set yrange [-40:-5]
2323set title "Received signal strength"
2424set data style errorlines
2525plot \

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