System Overview - Geometrics MetalMapper 2x2 Operation Manual

2. System Overview

The MetalMapper 2x2 is comprised of four transmitter coils approximately 35 cm x 35 cm in
size. Located in the center of each transmitter coil is a 10 cm x 10 cm x 10 cm receiver cube,
each one containing three (3) orthogonal coils to measure the fields resulting in 12 different
receiver coils. The receiver coils are oriented in 3-dimensions. The center-to-center distance of
each receiver cube is approximately 40 cm. The sensors are mounted on a platform that is
typically 26 cm above the ground surface. A GPS and IMU (inertial measurement unit) are
mounted on a tower centered above the sensor platform. The transmitter electronics and
batteries are mounted on a backpack carried by the operator. The system is operated from a
tablet computer running the MetalMapper software.
Figure 2.1: Cart layout showing naming convention of A, B, C, D transmitter coils and receiver
cubes. X, Y, and Z coordinates are positive in the directions shown.
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