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Re: ✘UBX-MON-SPAN and antennas
From: |
Gary E. Miller |
Subject: |
Re: ✘UBX-MON-SPAN and antennas |
Date: |
Wed, 23 Feb 2022 12:42:25 -0800 |
Yo All!
Here are 2 new pngs with the same L1 and L2 data as before. Only this
time instead of plotting the raw points, the data is smoothed with
bezier curves.
smooth-L1.png:
The ANN-MB0 stands out a little nicer than the plain cheap GPS antenna.
smooth-L2.png:
The cheap GPS+GLONASS antenna looks o have a slightly smoother passband
and a bit more gain than the ANN-MB0
Here is the modified gnuplot code:
----
set terminal qt size 600,600
set style line 12 lc rgb'#808080' lt 0 lw 1
set grid back ls 12
set xtics nomirror rotate by -45
set format x "%9.0f"
set yrange [20:180]
plot 'ann-mb0-f9p-L2.dat' using 1:2 smooth sbezier , \
'gps-f9p-L2.dat' using 1:2 smooth sbezier, \
'gpsglo-f9p-L2.dat' using 1:2 smooth sbezier, \
'gpsglo2-L2.dat' using 1:2 smooth sbezier
----
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem@rellim.com Tel:+1 541 382 8588
Veritas liberabit vos. -- Quid est veritas?
"If you can't measure it, you can't improve it." - Lord Kelvin
smoothed-L2.png
Description: PNG image
smoothed-L1.png
Description: PNG image
pgpG1w3ZlxvuI.pgp
Description: OpenPGP digital signature