Underwater EIT Follow-on Project Final Report


  1. Bouchette, G.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN);Neptec Design Group - Kanata, ON (CAN)
This final report summarizes the findings obtained during the Underwater EIT Follow-on project carriedout between January and October 2008 (Contract No. W7702-07R159/001/EDM). The project wasintended to characterize the EIT sensing modality in various underwater conditions in view of futuredevelopment of a sensing platform capable of operating in shallow water areas likely to hold mines orunexploded ordnance buried in underwater sediment. This type of environment is challenging for mostlandmine detection sensors.It has been observed that the EIT technology is especially effective in wet environments. In collaborationwith DRDC Suffield in 2003-04 and in 2005-06, Neptec undertook small-scale laboratory testing of anEIT instrument in an underwater environment. The results showed that the system can reliably detecttargets in water if the instrument is sufficiently close to the target. This follow-on research project wasdesigned to further evaluate the suitability of EIT for the underwater application. The main projectobjectives included: experimentation with variations on the EIT reconstruction algorithms, using theEIDORS framework; simulation and lab experimentation to evaluate the effects of electrode pitch onsystem performance; evaluation of EIT performance in various likely conditions for an underwaterapplication, namely different levels of water turbidity, water salinity, and target rusting; comparison of EITperformance to underwater performance of a traditional EMI metal de
Report Number
DRDC-SUFFIELD-CR-2009-075 — Contractor Report
Date of publication
01 Jan 2009
Number of Pages
Electronic Document(PDF)

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