Patents Assigned to The United Stated of America as represented by the Secretary of the Navy
  • Patent number: 9658318
    Abstract: A system and a method involve acoustic source localization for multiple acoustic sources using passive sonar. Tracks are constructed based on source location maps (SLMs) that reveal the locations of the sources over a grid of tentative source locations. The proposed estimator for the SLMs performs coherent processing of broadband acoustic measurements, capitalizes on the sparse structure of the SLMs, and uses the prior SLM estimate to capture temporal information about the locations of the sources.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: May 23, 2017
    Inventors: Pedro A. Forero, Paul A. Baxley
  • Publication number: 20130334666
    Abstract: Described herein is a method for growing indium nitride (InN) materials by growing hexagonal and/or cubic InN using a pulsed growth method at a temperature lower than 300° C. Also described is a material comprising InN in a face-centered cubic lattice crystalline structure having an NaCl type phase.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 19, 2013
    Applicant: The Government of the United Stated of America, as represented by the Secretary of the Navy
    Inventors: Neeraj Nepal, Charles R. Eddy, JR., Nadeemmullah A. Mahadik, Syed B. Qadri, Michael J. Mehl
  • Patent number: 7257920
    Abstract: The present invention comprises a reflective surface used in conjunction with an aiming device that provides the user targeting information on a surface directly on the aiming device. The reflective surface is moveably mounted directly behind the aiming device, where a user's eye would normally be positioned. In this configuration, a user, positioned at a point not directly behind the aiming device or system being used, may move the mirror to an angle appropriate to see where the system is being aimed, as indicated, on the surface of the aiming device.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: August 21, 2007
    Assignee: The United Stated of America as Represented by the Secretary of the Navy
    Inventors: Brian K. Shaffer, Paul Fennewald, John Monico, Richard Higgins, James Waldron
  • Patent number: 5808970
    Abstract: A sonar array uses multiple acoustically transparent layers. One layer is a lanar array of acoustic sensors that is substantially acoustically transparent. Another layer is an acoustically transparent wiring assembly that provides electrical connection to each acoustic sensor. A third acoustically transparent layer is a planar array of signal processing circuits coupled to the wiring assembly for processing electrical signals generated by the acoustic sensors. Each signal processing circuit resides within an area that is in geometric correspondence with a respective one acoustic sensor. Each signal processing circuit can include a preamplifier, an analog-to-digital converter and a digital multiplexer.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: September 15, 1998
    Assignee: The United Stated of America as represented by the Secretary of the Navy
    Inventors: Fred Nussbaum, Gerald T. Stevens, Maurice J. Griffin
  • Patent number: 5310990
    Abstract: Processing methods transform ferroelectric precursor films into a desired crystalline structure without adversely heating nearby materials and circuitry such as those found associated with lead zirconate titanate films. The thin film sample is placed within an appropriate chamber, where a suitable ambient is in contact with the thin film sample. The ambient may be air, oxygen or any other ambient which is known in the art to be appropriate for annealing ferroelectric materials. In this regard annealing in air can done without the processing chamber. The process for annealing relies upon continuous wave (CW) laser annealing, pulse UV annealing with or without a laser and various combinations of thermal pretreatment and processing to allow solid state diffusion in accordance with parameters appropriate for a particular application. Methods of laser patterning thin film ferroelectrics without adversely damaging adjacent or underlying layers, e.g. electrodes, are also disclosed.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: May 10, 1994
    Assignee: The United Stated of America as represented by the Secretary of the Navy
    Inventors: Stephen D. Russell, Douglas A. Sexton
  • Patent number: 5308270
    Abstract: A submarine-launched, ice-penetrating sonobuoy is disclosed. The buoy is pedo-shaped with a collapsible obturator tail-fin section removably attached at the tail-end, standard electronics in a mid-section and an explosive nose cone at the front. Immediately after launch, the tail-fin section expands to exert a drag on the buoy to halt any forward motion. The tail-fin section is discarded and the nose cone and mid-section portion rise until the nose impacts the underside of the ice. Upon impact, a pre-selected "shape" charge ruptures the ice and an a spring-antenna, connected to the mid-section, is raised through the hole.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: May 3, 1994
    Assignee: The United Stated of America as represented by the Secretary of the Navy
    Inventors: Bruce W. Travor, Ronald D. DiGirolamo
  • Patent number: 4349396
    Abstract: A pyrotechnic composition, suitable for metal cutting, comprises an oxidi selected from the class consisting of calcium sulfate hemihydrate, anhydrous calcium sulfate, magnesium monohydrate, anhydrous magnesium sulfate, anhydrous strontium sulfate, and mixtures thereof; a metal fuel, a halopolymeric binder; and sulfur.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: September 14, 1982
    Assignee: The United Stated of America as represented by the Secretary of the Navy
    Inventors: Kurt F. Mueller, Marguerite S. Chang, Robert F. Farncomb, Lyle O. Malotky