Patents by Inventor Juan I. Arvelo
Juan I. Arvelo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8194504Abstract: A hydrophone unit comprising a resilient central wire; a conductive wire coiled around the resilient central wire, said conductive wire being coated with a piezo material for generating an electrical signal in response to the presence of an acoustic vibration, wherein the resilient central wire is fabricated from spring steel, the conductive wire is a copper wire, the piezo material includes polyvinylidene difluoride; a layer of conductive material deposited on the piezo material-coated conductive wire, wherein the layer of conductive material comprises a silver ink; and a jacket of polyurethane.Type: GrantFiled: March 10, 2010Date of Patent: June 5, 2012Assignee: The John Hopkins UniversityInventors: David A. Kitchin, Charles W. Kerechanin, II, Juan I. Arvelo, Jr., Ronald W. Mitnick
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Publication number: 20110026366Abstract: A hydrophone array includes an inflatable shaped housing enclosing an interior space and formable between a collapsed configuration and an expanded configuration, a framework of compliant material disposed within the interior of the inflatable housing, and a plurality of hydrophones attached to the compliant material at respective positions, wherein said hydrophones are arranged in a predetermined geometric array when the shaped housing is in the expanded configuration. Also provided herein is a system and method for deploying the hydrophone array.Type: ApplicationFiled: March 10, 2010Publication date: February 3, 2011Inventors: David A. Kitchin, Charles W. Kerechanin, II, Juan I. Arvelo, JR., Ronald W. Mitnick
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Patent number: 7855934Abstract: A hydrophone deployment system including a hydrophone assembly, a container for enclosing the hydrophone assembly body in a coiled configuration, means for ejecting the hydrophone assembly from the container, a signal processing module for processing the electrical signals from the hydrophone units, and a transmitter module for converting said processed electrical signals and transmitting said converted signals to a remote receiver.Type: GrantFiled: May 14, 2010Date of Patent: December 21, 2010Assignee: The Johns Hopkins UniversityInventors: David A. Kitchin, Charles W. Kerechanin, II, Charles B. Cooperman, Juan I. Arvelo, Jr., Ronald W. Mitnick
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Publication number: 20100246330Abstract: A hydrophone assembly includes at least four hydrophone units for converting an acoustic signal to an electrical signal, the hydrophone units being in a parallel, cylindrically symmetric spaced spatial relationship with each other, and at least one spacer element to maintain the hydrophone units fixed in the spatial relationship to each other, wherein the hydrophone units and spacer element are embedded in an encapsulant to form an elongated, flexible body.Type: ApplicationFiled: May 14, 2010Publication date: September 30, 2010Inventors: David A. Kitchin, Charles W. Kerechanin, II, Charles B. Cooperman, Juan I. Arvelo, JR., Ronald W. Mitnick
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Patent number: 7719925Abstract: A hydrophone assembly includes at least four hydrophone units for converting an acoustic signal to an electrical signal, the hydrophone units being in a parallel, cylindrically symmetric spaced spatial relationship with each other, and at least one spacer element to maintain the hydrophone units fixed in the spatial relationship to each other, wherein the hydrophone units and spacer element are embedded in an encapsulant to form an elongated, flexible body.Type: GrantFiled: October 10, 2006Date of Patent: May 18, 2010Assignee: The Johns Hopkins UniversityInventors: David A. Kitchin, Charles W. Kerechanin, II, Charles B. Cooperman, Juan I. Arvelo, Jr., Ronald W. Mitnick
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Patent number: 7697374Abstract: A hydrophone array includes an inflatable shaped housing enclosing an interior space and formable between a collapsed configuration and an expanded configuration, a framework of compliant material disposed within the interior of the inflatable housing, and a plurality of hydrophones attached to the compliant material at respective positions, wherein said hydrophones are arranged in a predetermined geometric array when the shaped housing is in the expanded configuration. Also provided herein is a system and method for deploying the hydrophone array.Type: GrantFiled: October 10, 2006Date of Patent: April 13, 2010Assignee: The Johns Hopkins UniversityInventors: David A. Kitchin, Charles W. Kerechanin, II, Juan I. Arvelo, Jr., Ronald W. Mitnick
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Patent number: 7675819Abstract: A sonar system for detecting underwater acoustic signals includes a plurality of hydrophone units capable of converting acoustic impulses to electrical signals, the hydrophone units being substantially vertically oriented when deployed in a body of water, and the hydrophone units occupying at least some of the positions of an M×N horizontal array. Two-dimensional Chebyshev mathematical weighting is applied to the electrical signals from the individual hydrophone units such that each individual signal from each hydrophone unit is assigned a respective weighting number and a numerical value is assigned to each individual signal corresponding to the strength of the electrical signal as adjusted by the respective weighting number.Type: GrantFiled: October 10, 2006Date of Patent: March 9, 2010Assignee: The Johns Hopkins UniversityInventors: Juan I. Arvelo, Jr., Ronald W. Mitnick
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Publication number: 20090213695Abstract: A sonar system for detecting underwater acoustic signals includes a plurality of hydrophone units capable of converting acoustic impulses to electrical signals, the hydrophone units being substantially vertically oriented when deployed in a body of water, and the hydrophone units occupying at least some of the positions of an M×N horizontal array. Two-dimensional Chebyshev mathematical weighting is applied to the electrical signals from the individual hydrophone units such that each individual signal from each hydrophone unit is assigned a respective weighting number and a numerical value is assigned to each individual signal corresponding to the strength of the electrical signal as adjusted by the respective weighting number.Type: ApplicationFiled: October 10, 2006Publication date: August 27, 2009Inventors: Juan I. Arvelo, JR., Ronald W. Mitnick
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Publication number: 20090207697Abstract: A hydrophone array includes an inflatable shaped housing enclosing an interior space and formable between a collapsed configuration and an expanded configuration, a framework of compliant material disposed within the interior of the inflatable housing, and a plurality of hydrophones attached to the compliant material at respective positions, wherein said hydrophones are arranged in a predetermined geometric array when the shaped housing is in the expanded configuration. Also provided herein is a system and method for deploying the hydrophone array.Type: ApplicationFiled: October 10, 2006Publication date: August 20, 2009Inventors: David A. Kitchin, Charles W. Kerechanin, II, Juan I. Arvelo, JR., Ronald W. Mitnick
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Publication number: 20090207698Abstract: A hydrophone assembly includes at least four hydrophone units for converting an acoustic signal to an electrical signal, the hydrophone units being in a parallel, cylindrically symmetric spaced spatial relationship with each other, and at least one spacer element to maintain the hydrophone units fixed in the spatial relationship to each other, wherein the hydrophone units and spacer element are embedded in an encapsulant to form an elongated, flexible body.Type: ApplicationFiled: October 10, 2006Publication date: August 20, 2009Inventors: David A. Kitchin, Charles W. Kerechanin, II, Charles B. Cooperman, Juan I. Arvelo, JR., Ronald W. Mitnick
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Patent number: 7187619Abstract: A system and method for predicting passive, high-frequency sonar array performance at any underwater location, implemented as a software package running on a computer. An operator selects an arbitrary geographical location, specifies a sonar array and defines a target. The necessary bathymetry, and associated oceanographic, environmental and meteorological data are automatically acquired or generated, along with appropriate models for ocean surface and bottom reflectivity, and vertical noise directionality. A Comprehensive Acoustic System Simulation (CASS) software module performs appropriate ray tracing, which is used to produce Cross-Spectral Density (CSD) matrices for the target and the anisotropic ambient noise. These are used to generate graphic and numeric representations of the array's performance at the selected location. A time of year may also be specified and the appropriate anisotropic noise field for conditions expected at that location at that time of year will be generated.Type: GrantFiled: March 11, 2004Date of Patent: March 6, 2007Assignee: The Johns Hopkins UniversityInventors: Juan I. Arvelo, Jr., Patrick A. Ferat, Leslie Mobley
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Patent number: 7002877Abstract: A system and method for predicting active, low-frequency sonar array performance in shallow, littoral waters using a physics-based modeling of acoustic reverberation. An operator characterizes the active sonar's acoustic transmitter and receiver, the environment it is operating in and the targets to be detected. The operator selects appropriate bathymetry, bottom composition and sound-speed profile. The spatial resolution of the bathymetry database is enhanced using fractal interpolation and a bottom-loss-and-scattering corrected-for-slope is calculated. A semi-empirical scattering strength is derived from a wind-speed data base and a stochastic biologic realization is derived from a biologic population database. These are then used to calculate a deterministic component of bottom, surface and volume reverberation using a normal mode mathematical model of acoustic wave propagation.Type: GrantFiled: November 3, 2004Date of Patent: February 21, 2006Assignee: The Johns Hopkins UniversityInventors: Juan I. Arvelo, Bruce Newhall