Seeing through the Ground: The Potential of Gravity Gradient as a Complementary Technology

<table>Example of one prototype multisensor cart with a commercial GPR, low frequency electromagnetic, and positioning sensors attached.  The frame indicates the possible position for the PMF sensors.</table>

Advances in Civil Engineering

fig1

Figure 1

Figure 1: Seeing through the Ground: The Potential of Gravity Gradient as a Complementary Technology 