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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.


The ANN-MB0 stands out a little nicer than the plain cheap GPS antenna.


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

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

Attachment: smoothed-L2.png
Description: PNG image

Attachment: smoothed-L1.png
Description: PNG image

Attachment: pgpG1w3ZlxvuI.pgp
Description: OpenPGP digital signature

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