Oceanography

available technology

Direction Finding System Using MEMS Sound Sensors

Conventional directional sound sensing systems use an array of spatially separated microphones to achieve directional sensing by monitoring the arrival times and amplitudes at each microphone. The accuracy of the directionality in this case is determined by the extent of spatial separation of the...
available technology

Directional steering controlled jet propulsion

An elongated fluid dynamic water jet type of propulsion body receives an inflow of fluid through inlet openings for entry into a jet propulsor from which an outlet jet emerges for passage through an internal transition passage to an exit end between two pairs of horizontal flaps hinged to the body...
available technology

Distributed time-reversal mirror array

A distributed time reversal mirror array (DTRMA) system includes a plurality of independent, sparsely distributed time reversal mirrors (TRMs). Each of the TRMs includes an antenna; a transceiver connected to the antenna for transmitting a signal toward a target, for receiving a return, reflected...
Economical Low Frequency (LF) Active Antenna
available technology

Economical Low Frequency (LF) Active Antenna

At about $200, ideal as a low cost option for radio frequency receivers for astronomical observations - Designed for economical production and rapid, on-site assembly by relatively untrained personnel for use in arrays of antennas - Can operate independently or as part of a long wavelength array...
available technology

Electromagnetic pulse generator

An electromagnetic pulse delivery system for delivering a sufficient amount of energy and waveform to induce a current in target electronic components that disrupt or damage those target electronic components and overwhelm any protective circuitry. The system includes a power source in...
available technology

Embedded wear sensor

Fiber optic filaments are embedded at a bearing surface. In the context of a mechanical bearing system, the filaments wear as the surface wears. Based on the observed amount of light which is transmitted through the filaments, the degradation of the filaments is related in a measurable way to the...
available technology

Emergency ship towing system

A thrust unit having an engine as an external source of motive power for a marine vessel in distress, is delivered by helicopter air drop to a remote seawater location together with other components of the associated towing system, delivered onto the deck of such marine vessel for operational...

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