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9.2.1 Real time data display.
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While the software is taking data, it is possible to navigate to any of the other tab displays. It is not possible
however to alter any settings on the 'System setup' screen unless the 'Change Lidar settings' button is first
pressed and the timer is counting down.
On the left, the current scan position, the A-scope or power versus range and the Doppler velocity versus range are
displayed. The backscatter and Doppler returns are shown on the right hand waterfall plots, with colourised Z-axes.
The Data logging file is shown in the file box and the processed logging button is on by default and the raw data
logging button is off by default. Pressing the Restart file button will cause the current processed data file to be deleted
and overwritten (but not the raw data file).
The Colour display parameters are purely for display and don't alter the logged data in any way.
The Background file:
This file is taken while the system is running normally, but with the atmospheric return blocked by way of the scanner
directing the beam directly down. It is used to remove any (non white) features present in the noise floor. A new file is
taken every hour, and if the Lidar settings are altered.
The background button can be pressed if a bias in the Doppler display is evident.
Pressing the Change Lidar settings button will cause the current data taking to pause, while new settings are chosen
on the set up screen – in the same way that they were initially chosen on start up.
If 2 or more rays are being averaged, then this is displayed on the 'Average number' display.
Scale settings.
Graph axis ranges can be altered by double clicking the graph x,y and z scale labels and entering new values. Auto-
scaling may need to be disabled to maintain new axis values.
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