Line Scan
© Radiodetection 2016
45
RD1500 Operation Manual
Figure 8-10: Left image shows
Filter On
, while the right shows the same data with the
Filter
Off
.
Gain
Since the material being scanned absorbs the GPR signal, deeper targets return weaker
signals. Gain acts like an audio volume control, amplifying signals and making deeper targets
appear stronger in the image. Gain values vary from 1 to 9 where 1 means a minimal
amplification has been applied and 9 means that maximum amplification has been applied.
Pressing this button increments the gain; once you reach 9 it cycles back to 1.
Avoid over-gaining the data as it can make interpretation difficult. In general, soils that are more
electrically conductive (eg. clays) will require a higher gain compared to soils that are less
electrically conductive (eg. sand).
Figure 8-11: Varying the Gain
Frequen
See
™
Frequen
See
™ is a feature that can selectively enhance small, medium or large size targets for
easier viewing and detection. Pressing
FrequenSee
(or
DynaT
in some older models) cycles
between the options:
All
,
Small
,
Medium
and
Large
. Each option allows the user to enhance
part of the ultra-wide band (UWB) spectrum to focus on those desired features.
Summary of Contents for RD1500
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