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Update Echo-mode text and screenshot in User Guide.

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Joe Taylor 2022-10-14 09:12:17 -04:00
parent 98a67820c8
commit e29eb263b5
1 changed files with 16 additions and 2 deletions
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18
doc/user_guide/en/vhf-features.adoc
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@ -297,11 +297,25 @@ Doppler-shifted frequency. With *Split Operation* set to *Rig* or
Moon and click *Enable Tx* on the main window to start a sequence of
echo measurements. Each cycle takes 6 seconds. If strong enough,
echoes will be visible in the waterfall. Their average spectrum will
be displayed in the Echo Graph window, and numerical parameters in the
main window.
be displayed in the Echo Graph window, and numerical parameters of the
measurements appear in the main window:
image::Echo_1296.png[align="center",alt="Echo 144 MHz"]
At the end of each echo cycle a line of data in the main text window
displays the following information:
UTC Time in hhmmss format
Hour UTC in hours and decimal fraction
Level Relative received noise power (dB)
Doppler EME Doppler shift at center of lunar disk
Width EME Doppler spread over full lunar disk
N Number of accumulated echo or monitor cycles
Q Estimated quality of averaged data on a 0 – 10 scale
DF Offset of spectral peak from 1500 Hz
SNR Average signal-to-noise ratio (dB/2500 Hz)
dBerr Estimated uncertainty of SNR
... more to come ...
=== Tips for EME