Weakly electric fish hunt and navigate without visual cues by sensing pertu
rbations of a self-generated electric field. The ability to detect, charact
erize and localize objects using electric fields is called electrolocation.
This capability could be beneficial for underwater robots sent to explore
dark aquatic environments, from those on Earth to those that might exist on
other planets and moons such as Europa. Here we describe initial progress
on the development of an artificial sensor array that could provide electro
sensory capabilities to a submarine robotic explorer. The design of the sen
sor array and the associated signal processing algorithms are inspired by o
ngoing empirical and theoretical studies of signal detection, estimation, a
nd active sensor positioning in weakly electric fish as they hunt for small
prey. Here we describe a simple test setup consisting of a small electrose
nsory array and a robotic platform for controlling the movement of an elect
rolocation target. This system allows us to acquire and analyze electrosens
ory signals similar to those obtained a weakly electric fish.