RD1000™ Operation Manual 21
Target at Known Depth
If there are no suitable arches visible in the image to perform the
Target Arch Matching described above, there may be a target of
known depth in the area being scanned.
To determine the Soil Type using a target at known depth:
With the target response visible on the image, use the Up
and Down Arrows to move the Depth Indicator (and Indicator
Arch) until it lies on top of the GPR response of the known
target.
Use the Wide and Narrow Arch buttons to change the shape
of the Indicator Arch until the depth of the target, displayed in
red above the menu, is correct.
Once the depth is matched, save the Soil Type value by
pressing the Save button.
Soil Moisture
If a good target arch or a target of known depth is not available,
the user will have to estimate the Soil Type. The soil type is most
strongly affected by water so the soil type options relate to the
amount of water in the soil.
Change the soil type by pressing the Soil Moisture button until the
option that best describes the soil in the area is displayed. The
options are Very Dry, Dry, Moist, Wet and Very Wet Soil.
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