Kinematic quantities, including displacement, velocity, and acceleration are key parameters in the monitoring and analysis of the complicated behaviour of earth materials.
For particular types of problems, Mote is developing a magnetic tracking system having the potential to capture 3D motions of subsurface soil, translations, and rotations of boulders, etc. Magnetic tracking is a type of position sensing technique that requires a tracking target (tracker) and a reference array (receiver). A magnetic dipole, such as a permanent magnet or a coil emitting an electromagnetic signal (electromagnet), can generate a magnetic field in the space. Position, as well as direction information of a dipole, can be derived from the magnetic flux density it generates. This technique can be well fused with initial measurement units to provide even better estimations of motions of targets.