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usrp: update filtering and display for uncorrupted measurement setup

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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]
This commit is contained in:
Werner Almesberger 2010-12-01 10:47:14 -03:00
parent 04972bb2f6
commit b3c0b4bf62
2 changed files with 3 additions and 3 deletions
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4
usrp/evscan
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@ -18,6 +18,6 @@ done
for f in "$1"/24*; do for f in "$1"/24*; do
echo -n `basename "$f"` '' echo -n `basename "$f"` ''
for n in "$f"/data*; do for n in "$f"/data*; do
./fft $opts -s 100 0 20 50 <"$n" || echo "fft failed for $n" 1>&1 ./fft $opts -s 100 0 20 70 <"$n" || echo "fft failed for $n" 1>&1
done | ./range -v 2 done | ./range -v 10
done done

2
usrp/plscan
View File

@ -19,7 +19,7 @@ gnuplot -persist <<EOF
set xlabel "MHz" set xlabel "MHz"
set ylabel "dB" set ylabel "dB"
set xrange [2402:2483] set xrange [2402:2483]
set yrange [-35:-25] set yrange [-40:-5]
set title "Received signal strength" set title "Received signal strength"
set data style errorlines set data style errorlines
plot \ plot \