公开(公告)号：US10222627B2

公开(公告)日：2019-03-05

申请号：US15464382

申请日：2017-03-21

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Leonid A. Beresnev ,  Anthony R. Valenzuela ,  Chatt C. Williamson

IPC: G02B27/30 ,  G02B3/00 ,  G02B7/00 ,  G02B9/00 ,  G02B11/00 ,  G02B13/00 ,  G02B15/00 ,  G02B17/00 ,  G02B25/00 ,  G02B27/09 ,  G02B6/26 ,  F41H13/00

Abstract: An optics system includes at least one emitting fiber tip that transmits a divergent beam. The divergent beam includes a global maximum intensify of radiation centered with an output optical axis. The divergent beam includes central beams for collimating and periphery beams for disposing. The periphery beams include parasitic radiation of the divergent beam. The optics system includes at least one collimating lens having an output size, output shape, and output optical axis centered thereto and configured to redirect the central beams to a target and redirect the periphery beams into free-space; and at least one redirecting element positioned in between the at least one emitting fiber tip and the at least one collimating lens. The redirecting element includes a first area having an interior size and interior shape to transmit the central beams, and at least one second area outside of the first area to transmit the periphery beams.

公开(公告)号：US20190055633A1

公开(公告)日：2019-02-21

申请号：US15678637

申请日：2017-08-16

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： John F. Chinella

IPC: C22C38/00 ,  C22C38/44 ,  C22C38/04 ,  C22C38/30 ,  C21D8/02

Abstract: A low alloy high nitrogen steel and method of making the same are provided. The method can include forming a steel composition using nitrogen additive constituents and under a first gas atmosphere that can include any of inert argon, nitrogen, or a controlled atmosphere conveying nitrogen. The method can include hot working the steel composition, heating the steel composition to normalize or austenitize, quenching the steel composition at a rate to produce substantially a martensitic microstructure, and heating tempering the steel composition under vacuum or a second gas atmosphere. The second gas atmosphere can include air, controlled atmosphere with ammonia, inert nitrogen, or nitrogen and argon. The steel composition can include iron and, by weight: 0.16-0.60% nitrogen, 0.03-0.20% carbon, 0.10-2.00% nickel, 0.60-2.00% manganese, 1.30-2.80% chromium, and 0.60-1.50% molybdenum. Cobalt can be substituted for any part of the nickel.

公开(公告)号：US20190049575A1

公开(公告)日：2019-02-14

申请号：US15671579

申请日：2017-08-08

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Kenneth Irving Ranney ,  Gregory James Mazzaro ,  Kyle Alexander Gallagher ,  Stephen Freeman

IPC: G01S13/90 ,  G01S1/30 ,  G01S19/42 ,  G01S13/58 ,  G01S13/78

Abstract: A radar assembly for receiving signals at spaced frequencies from an unknown transmitting source comprising a receiver operative to receive signals; the receiver comprising a series of channels, each channel comprising a low pass filter configured to allow passage of a signal from an unknown transmitting source, an analog to digital converter configured to transform the signal from the unknown transmitting source to a digital signal, a Hilbert transform configured to transform the digital signal from the unknown transmitting source into a single sideband signal, a Fourier transform configured to transform the single sideband signal into a plurality of regularly spaced frequency samples, and an inverse Fourier transform for extracting regularly spaced frequency samples; whereby extracted pulses form a train of pulses that are inputted into an imager which utilizes synthetic aperture radar to form an image of the area of interest containing the unknown transmitting device and method thereof.

公开(公告)号：US10119703B2

公开(公告)日：2018-11-06

申请号：US13803206

申请日：2013-03-14

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： David A. Clark

IPC: F23D11/44 ,  F22B1/18

Abstract: Methods for vaporizing hydrocarbon fuel and delivering the hydrocarbon fuel in either a vaporized phase or a supercritical phase to, for example, a combustion chamber are provided herein. A method of vaporizing a hydrocarbon fuel, wherein the hydrocarbon fuel is in a liquid phase at a first temperature and a first pressure, and wherein the first temperature of the liquid phase hydrocarbon fuel is less than its intrinsic oxidation or endothermic reaction temperature, the method may include lowering a pressure of the liquid phase hydrocarbon fuel from the first pressure to a second pressure; and heating the liquid phase hydrocarbon fuel from the first temperature to a second temperature, wherein the hydrocarbon fuel at the second temperature and the second pressure is in a substantially completely vaporized phase substantially without thermally oxidizing the hydrocarbon fuel, and wherein the hydrocarbon fuel in the substantially completely vaporized phase does not form carbonaceous contaminants.

公开(公告)号：US10026708B2

公开(公告)日：2018-07-17

申请号：US13657957

申请日：2012-10-23

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Patrick J Taylor ,  Sudhir Trivedi ,  Wendy L Sarney

IPC: H01L23/48 ,  H01L23/00

Abstract: Provided among other things is an electrical device comprising: a first component that is a semiconductor or an electrical conductor; a second component that is an electrical conductor; and a strong, heat stable junction there between including an intermetallic bond formed of: substantially (a) indium (In), tin (Sn) or a mixture thereof, and (b) substantially nickel (Ni). The junction can have an electrical contact resistance that is small compared to the resistance of the electrical device.

公开(公告)号：US20180166220A1

公开(公告)日：2018-06-14

申请号：US15378685

申请日：2016-12-14

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Nathan S. Lazarus ,  Christopher P. Migliaccio ,  Iain M. Kierzewski

IPC: H01G7/04

CPC classification number: H01G7/04

Abstract: A variable capacitor includes a substrate; a plurality of electrodes on the substrate; a phase change material on the plurality of electrodes; and a thermo-modifying element adjacent to the phase change material, wherein the thermo-modifying element changes a temperature of the phase change material. The change in temperature of the phase change material may change a capacitance between the plurality of electrodes. The thermo-modifying element may be integrated into the substrate. The thermo-modifying element may include a heater that raises a temperature of the phase change material to change from a solid state to a liquid state. The thermo-modifying element may include a layer of metal adjacent to the substrate, and wherein when electrical current flows through the layer of metal, the layer of metal forms a resistive heater and raises a temperature of the phase change material to change from a solid state to a liquid state.

公开(公告)号：US20180074179A1

公开(公告)日：2018-03-15

申请号：US14748272

申请日：2015-06-24

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： DaHan Liao

IPC: G01S13/06 ,  G01S7/282 ,  G01S7/285 ,  G01S13/10

CPC classification number: G01S13/06 ,  G01S7/282 ,  G01S7/285 ,  G01S7/414 ,  G01S13/106 ,  G01S13/26 ,  G01S13/885 ,  G01S13/887

Abstract: A radar system for detecting a target containing electronic components. The radar system includes a radiofrequency transmitter which generates a radar signal at a fundamental frequency. A modulator modulates the radar signal at a modulation frequency and the modulated radar signal is coupled to a transmission antenna. A receiver receives an echo from the radar signal. A filter isolates the harmonics of the fundamental frequency from the echo and a demodulator then compares the phase of the harmonics of the echo with the phase of the harmonics of the radar signal and generates an output signal representative thereof. An imaging algorithm receives the output signal and creates a two-dimensional image of the received echo and then displays that image on a display.

公开(公告)号：US09912683B2

公开(公告)日：2018-03-06

申请号：US14247566

申请日：2014-04-08

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Hasan Cam

IPC: H04L29/06

CPC classification number: H04L63/1433

Abstract: A method and apparatus is provided for determining aggregated value of risk and resilience metrics of critical nodes in a network of computer nodes, comprising determining a status of each node in a plurality of nodes, computing one or more effectiveness attributes for each node in the plurality of nodes, ranking the plurality of nodes based upon at least the one or more effectiveness attributes of each node, determining one or more nodes as critical nodes based on the ranking and computing a criticality surface of the one or more critical nodes as the aggregated value of risk and resilience metrics, wherein the criticality surface is an aggregation of the one or more effectiveness attribute for each of the one or more critical nodes.

公开(公告)号：US20180005018A1

公开(公告)日：2018-01-04

申请号：US15647238

申请日：2017-07-11

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Shiqiong Susan Young ,  Jinwei Ye

IPC: G06K9/00

CPC classification number: G06K9/00268 ,  G06K9/00214 ,  G06K9/00228 ,  G06K9/00288

Abstract: A system for facial recognition comprising at least one processor; at least one input operatively connected to the at least one processor; a database configured to store three-dimensional facial image data comprising facial feature coordinates in a predetermined common plane; the at least one processor configured to locate three-dimensional facial features in the image of the subject, estimate three-dimensional facial feature location coordinates in the image of the subject, obtain the three-dimensional facial feature location coordinates and orientation parameters in a coordinate system in which the facial features are located in the predetermined common plane; and compare the location of the facial feature coordinates of the subject to images of people in the database; whereby recognition, comparison and/or likeness of the facial images is determined by comparing the predetermined common plane facial feature coordinates of the subject to images in the database. A method is also disclosed.

公开(公告)号：US20170346151A1

公开(公告)日：2017-11-30

申请号：US15428623

申请日：2017-02-09

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Ali M. Darwish ,  Hingloi Alfred Hung

IPC: H01P5/16

CPC classification number: H01P5/16 ,  H03H7/00

Abstract: A power combiner and divider device includes a first port electrically connected to a first impedance line and a second impedance line; a second port electrically connected to the first impedance line and a coupled line; a third port electrically connected to the second impedance line and the coupled line; a third impedance line electrically connected to the coupled line; and a fourth impedance line electrically connected to each of the third impedance line and the coupled line.