Remote detection system
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorGary B. Huntress
Life of this patent
Estimating the term…
Abstract
A remote acoustic detection system includes at least one detection unit delivered to a remote or inaccessible location by a missile or other aircraft. The detection unit monitors acoustic events at the location such as aircraft takeoffs and landings and preferably is provided the capability of classifying the events, for example, as to the event or type of aircraft. A sleep mode can be provided to conserve power such that the unit is activated only in the presence of threshold acoustic levels. The unit also includes a wireless transceiver for relaying data to a central monitoring authority, which may be a passing or loitering aircraft. Each detection unit may be provided with an address for allowing monitoring of a network of detection units.
Claims14
A remote detection method comprising:
- delivering a detection unit to a remote surface location;
- receiving signals at said delivered unit through a transducer;
- digitizing said received signals in an analog to digital converter to provide digitized received signals;
- and
- extracting spectral features from said digitized received signals to provide processed signal data;
- storing said processed signal data prior to forwarding said processed signal data;
- and
- forwarding processed signal data by a wireless transceiver to a central monitoring authority.
A remote detection apparatus comprising:
- a transducer for receiving acoustic signals;
- an analog-to-digital converter joined to said transducer for converting said acoustic signals;
- a processor joined to said analog-to-digital converter, said processor processing said converted signals into features;
- a waveform library having known features therein joined to said processor, said processor comparing said features with said known features, said transceiver receiving compared features from the processor and transmitting said compared features;
- and
- a transceiver joined to said processor for transmitting said features.
A remote detection apparatus comprising:
- a transducer for receiving acoustic signals;
- an analog-to-digital converter joined to said transducer for converting said acoustic signals;
- a processor joined to said analog-to-digital converter, said processor processing said converted signals into features;
- memory joined to said processor for retaining said features;
- a gross audio detection unit joined to said transducer and said processor for providing an activation signal to said processor upon receipt of an acoustic signal above a predetermined threshold at said transducer;
- and
- a transceiver joined to said processor for transmitting said features, said transceiver being capable of receiving an external command signal, providing said command signal to said processor, and transmitting said retained features in response to the external command signal.
Dependencies are inferred from the claim text.