Networked and Embedded Systems Laboratory

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Navigation, localization, and targeting while completely submerged
in the ocean are all extremely dif&#64257;cult due to the lack of a pro&#64257;cient
sensor. The highly conductive nature of salt-water results in severe
radio-wave attenuation precluding the use of RADAR. Naturally-
occurring noise sources, high energy costs, long-wavelengths, and
surface turbidity restrict the use of SONAR imaging to low-
resolutions, depths, and far-&#64257;elds. The ocean’s dark, turbulent, and
silty disposition impedes optical imaging. In this work, we summarize
our latest experimental &#64257;ndings in creating an engineered sensor
which mirrors the biological phenomenon of electroreception and
demonstrate its ability to “visualize” targets with different con-
ductivities from the background ocean environment at very high
resolution by detecting perturbations in a quasi-static electric &#64257;eld
(electrostatics).
Our original work [3] covered the theory and feasibility of
biomimetic electroreception, but contained no practical demonstration
due to the absence of a fabricated prototype to evaluate. We have
recently completed such a device along with the construction of the
relevant instrumentation to evaluate it. Accordingly, we believe that
this work contains the &#64257;rst report and demonstration of a multichannel
electroreceptive sensor array capable of creating Biomimetic Electro-
static Images (BEI).

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