In-Field Inversion - Geometrics MetalMapper 2x2 Operation Manual

plus direction). Speed is given in the bottom left. Note that it is recommended to survey below
0.7m/s during dynamic surveys.
Target types are indicated by their shape. Once they are clicked on they change color to
indicate they are selected. The Target ID of the selected target is displayed in the lower left of
the map. Once the targets have been acquired, they will change color or be marked with a red
X.
Once the cart is navigated to the correct position, hit the button marked "Acquire" to collect
data. The data file will be named automatically based on the project file description and
measurement type. See Chapter 8 for more information on file naming. During acquisition, the
Transmitted Current will be displayed for each Tx coil. Additionally, the relative magnitude of
the signal measured in each Rx cube will be displayed in real time. Larger circles in this window
indicate larger amplitudes measured in that Rx cube. The top left circle is Rx A, top right Rx B,
bottom right Rx C, and bottom left Rx D (same orientation the operator sees).

6.2 In-Field Inversion

It is important that SAM measurements be made with the cart placed directly over the target of
interest (TOI). The "Position Estimate" window uses a visual GUI to help the operator ensure
that the cart is placed over the TOI after SAM measurements.
After a SAM is collected, the software will display the results of a single object in-field inversion
of a target in the Position Estimate window. This estimate is used by the operator to ensure
the measurement was collected directly over the target and within the specified distance from
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