Advancements are being made to a system that uses an inertial measurement unit (IMU) to<br>locally position an electromagnetic induction (EMI) sensor. The Small Area Inertial Navigation<br>Tracking system (SAINT) has been interfaced to an EM61-HH with the EMI data logged on a handheld<br>computer. To improve timing accuracy of the IMU and EMI data, a single board computer (SBC) is<br>being implemented to collect measurements from both. This SBC system will include digital I/O options<br>to interface to other advanced EMI systems under development. Operationally, the system can be swept<br>about over a localized EMI anomaly for thirty seconds. In post-processing, the EMI sensor data is<br>mapped out in both position and orientation.


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