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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]
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@ -18,6 +18,6 @@ done
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for f in "$1"/24*; do
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for f in "$1"/24*; do
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echo -n `basename "$f"` ''
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echo -n `basename "$f"` ''
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for n in "$f"/data*; do
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for n in "$f"/data*; do
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./fft $opts -s 100 0 20 50 <"$n" || echo "fft failed for $n" 1>&1
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./fft $opts -s 100 0 20 70 <"$n" || echo "fft failed for $n" 1>&1
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done | ./range -v 2
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done | ./range -v 10
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done
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done
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@ -19,7 +19,7 @@ gnuplot -persist <<EOF
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set xlabel "MHz"
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set xlabel "MHz"
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set ylabel "dB"
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set ylabel "dB"
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set xrange [2402:2483]
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set xrange [2402:2483]
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set yrange [-35:-25]
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set yrange [-40:-5]
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set title "Received signal strength"
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set title "Received signal strength"
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set data style errorlines
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set data style errorlines
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plot \
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plot \
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