HDT’s expertise in robotics has enabled us to extend our reach to include applications for underwater work typically done by humans, as well as sensitive motion sensing and silent maneuvering capabilities.

  • Working for the US Navy’s Office of Naval Research (ONR), HDT has developed a completely new type of underwater sensing, based on a very low-power electrical field that many fish use to find their prey
  • HDT’s “electrosense” detection system provides highly accurate short-range detection of objects in the water, on ship’s hulls, and even under sand, silt, and mud
  • The composition of the detected object can also be sensed, based on how it interacts with the weak electrical field
  • By using frequency hopping, the electrosense signal level is below the background noise in the ocean and is completely undetectable to anyone else
  • In a related project for ONR, HDT developed a completely new, bio-mimic form of propulsion based on a fish’s tail fin
  • HDT’s GhostBot has a rigid hull with an undulating body fin (emulating the Black Ghost Knifefish) enabling precise underwater maneuvering and propulsion