45
arrow), now when you press and hold the left mouse button move your mouse up and
down to move the scale so that the zero point coincides with the mid-point in the second
line of the sounding signal, as shown in Figs. 4.2 and 4.3. To the right of the profile, there
are three vertical columns used for quick tuning of the displayed profile. The upper column
is intended to change the color palette of displaying the radiolocation profile; this column
duplicates
Tools/Color palette
menu option and
button (brief color palette changing
menu appears when cursor holds under color palette column). Color palette modification
is described below (see p. 55); we would like to recommend you to use black-and-white
imaging, especially at the beginning.
The middle column is used to setup the signal’s gain function. At first opening of the
received sounding data, the gain function will be similar to one that was used at data
acquisition. You are able to set any different gain function. To open
Gain function
window simply press on the middle vertical line
Gain
with your left mouse button.
Right after the first output of a newly created profile, gain function will have the
same form as it was specified at data receiving. To change the gain function you should
point mouse cursor on any vertex, so it will change its shape to arrowed crosshair under
which is the value of gain in dB. Press and hold the vertex and move it left or right, so the
gain will be correspondingly changed. The result of your actions will be immediately
displayed on the profile.
If you need multi vertex gain function, you can add new vertexes (up to 10). For this
purpose press the button
and click on desired point on the Gain Function window and
the new vertex will be created. To remove unwanted vertex you could use button
or
popup menu’s item
Delete Vertex
. Mouse cursor will be changed to a crosshair. Now you
can simply click on the vertex that you want to remove (gain function needs at least two
extreme vertexes, which are not removable).
To import the desired gain function from a different data file press the button
and
choose data file by double click. You can also apply this gain function to the all currently
opened profiles by pressing button
.
If you need higher gaining (the common maximum gain is 84 dB), up to 168 dB, you
could turn on
Double Gain
option, by pressing button
or choose
Tools / Gain
Function / Double Gain
menu item of Main menu.
There is a possibility to built-in gain function to the raw data of the profile by
pressing button
or choose
Tools / Gain Function / Built-in Gain Function
menu item
of Main menu.
Warning: while gain function building-in the raw data of the profile are changing,
and if you overwrite this file, your raw data lost.
By pressing
(trace curve),
(power curve) and
(attenuation curve)
buttons you can show/hide the mentioned curves in the
Gain Function’s
window. Track
bar located beneath the buttons can be used to regulate curve’s transparency.
The lower column is used for the setup of the digital filter in the frequency domain.
At the first opening filter’s frequencies will be the same as they were setup at georadar
