Patents Assigned to U.S. ARMY RESEARCH LABORATORY ATTN: RDRL-LOC-I
  • Publication number: 20200025855
    Abstract: A method and apparatus for receiving signals from an unknown transmitting source and providing the location of the unknown transmitting source comprising a series of channels for receiving signals radiated by the unknown transmitting sources, generating preprocessed time domain data and generating a SAR image depicting a location of the unknown transmitting source, and a processor for processing the preprocessed time domain data to enhance a pixel value at each pixel location within the SAR image by summing signal data from each channel related to each pixel location to generate an enhanced SAR image.
    Type: Application
    Filed: August 30, 2018
    Publication date: January 23, 2020
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Kenneth Irving Ranney, Gregory James Mazzaro, Kyle Alexander Gallagher, Stephen Freeman
  • Publication number: 20200025883
    Abstract: A system, device, apparatus and method for receiving a laser signal such as within a LADAR receiver.
    Type: Application
    Filed: April 8, 2019
    Publication date: January 23, 2020
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Barry L. Stann, Mark M. Giza
  • Publication number: 20190049575
    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.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 14, 2019
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Kenneth Irving Ranney, Gregory James Mazzaro, Kyle Alexander Gallagher, Stephen Freeman
  • Publication number: 20180364332
    Abstract: A laser receiver comprising a sensor; a first amplifier operatively connected to the sensor comprising a first gate, a first source and a first drain; a first subcircuit operatively connected between the first drain and the first gate comprising a first resistor, a first inductor and a decoupling capacitor configured to allow the first amplifier bias to be established by the at least one first biasing resistor; the impedance of the first gate being sufficient such that only a small proportion of the current from the sensor passes into the first gate; an inductor connecting the first gate to the at least one biasing resistor with high impedance at the receiver operating frequency; a second amplifier comprising a second gate operatively connected to the first drain; and an output configured to be operatively connected to a processing unit and a display unit configured to displaying output and method thereof.
    Type: Application
    Filed: November 1, 2016
    Publication date: December 20, 2018
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Barry Lee Stann, Mark Michael Giza
  • Publication number: 20180138330
    Abstract: A photo detection device comprising a contact layer through which light enters; an absorbing region positioned such that light admitted through the contact layer passes into the absorbing region; at least one diffractive element operatively associated with the absorbing region operating to diffract light into the absorbing region; the configuration of the at least one diffractive element being determined by computer simulation to determine an optimal diffractive element (or elements) and absorbing region configuration for optimal quantum efficiency for at least one predetermined wavelength detection range, the at least one diffractive element operating to diffract light entering through the contact layer such that phases of diffracted waves from locations within the photo detection device or waves reflected by sidewalls and waves reflected by the at least one diffractive element form a constructive interference pattern inside the absorbing region.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 17, 2018
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventor: KWONG-KIT CHOI
  • Publication number: 20180005018
    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.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 4, 2018
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Shiqiong Susan Young, Jinwei Ye
  • Publication number: 20170278987
    Abstract: A photodetector comprising a contact layer; an absorbing region positioned such that light admitted passes into the absorbing region; a diffractive region comprising at least one diffractive element operating to diffract light into the absorbing region; the configuration of the photodetector being determined by computer simulation to determine an optimal diffractive region and absorbing region configuration for optimal quantum efficiency for at least one predetermined wavelength range, the diffractive region operating to diffract light entering through the contact layer such that phases of diffracted waves from locations within the photodetector including waves reflected by sidewalls and waves reflected by the diffractive elements form a constructive interference pattern inside the absorbing region.
    Type: Application
    Filed: June 2, 2017
    Publication date: September 28, 2017
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventor: KWONG-KIT CHOI
  • Publication number: 20170124480
    Abstract: A system for detection of human or vehicle activity comprising at least one sensor adapted to generate a signal and at least one processor operating to denoise the signal; generate an autocorrelation of the signal; partition the signal into a predetermined number of overlapping segments to form a time series of data; generate symbols for the overlapping segments; compare the pattern of generated symbols with known predetermined patterns of symbols representing human or vehicular activity; determine whether a threshold probability is exceeded which attributes the data signal to human or vehicular activity; analyze the patterns presented in the data signal by transforming the patterns of symbols into states; determine the transitions between states; and classify the signal as to being attributable to human or vehicular activity based upon the transitions between states. A method of detection and classification of sensor data signals via detecting patterns using time series analysis.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Applicant: U.S. ARMY RESEARCH LABORATORY ATTN: RDRL-LOC-I
    Inventors: Soumalya Sarkar, THYAGARAJU DAMARLA, Asok Ray
  • Publication number: 20170090069
    Abstract: A method and system configured to provide a weather forecast for a selected zone is provided. The method and system is configured to receive meteorological reports and locally sensed measurements. The information is transmitted to a weather model preprocessor disposed on the device which generates an analysis field. This information is passed to the weather model which is an executable program also disposed on the device. The weather model processes the analysis field generated by meteorological reports, large-scale initialization data and in-situ sensor values to generate an initial weather forecast. The weather model updates the initial weather forecast with real-time, high-resolution atmospheric measurements to generate a weather forecast more representative of the user's zone than that available from Internet/media outlets. Furthermore, because the weather model is run on the mobile device itself, staleness of the forecast will no longer be an issue, as forecasts can be generated on demand.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 30, 2017
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventor: Stephen F. Kirby
  • Publication number: 20170064580
    Abstract: A system for wireless communication comprising a plurality of wireless stations; each station configured to receive and transmit communications on at least one channel, each station comprising at least one processor and at least one memory operatively connected to the at least one processor; the at least one processor being configured to sense communications on the at least one channel and to wait a predetermined number of units of delay before transmitting a communication on the channel; the predetermined number of units of delay before transmission of the next communication being operatively associated with communications by the respective units.
    Type: Application
    Filed: June 3, 2015
    Publication date: March 2, 2017
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: King F. Lee, Ronald G. Tobin, William A. Walsh, Peter H. Lawrence
  • Publication number: 20160341814
    Abstract: A system for reception of electromagnetic waves in a spectrum in which interference with radio frequencies of other electronics devices occurs comprising a transmitter; at least one receiver configured to receive the received signal; each received signal organized into a digital vector; at least one memory portion configured to store a plurality of received signals in a vector form; the vectors being combined into a matrix, each vector of the matrix being a digital data record representing a received signal; at least one processor operatively connected to the at least one memory portion; the at least one processor configured to estimate that portion of the received signal attributable to noise; the at least one processor operating to jointly estimate a minimal number of distinctive noise patterns and minimize the simplicity of the data of interest; the at least processor operating to process the noise and data of interest separately.
    Type: Application
    Filed: June 7, 2016
    Publication date: November 24, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Lam H. Nguyen, Trac D. Tran
  • Publication number: 20160300973
    Abstract: A photodiode comprising a substrate; first semiconducting region; first contact; second region comprising an absorption region for the photons having a predetermined energy range; the second region being formed of a semiconductor having a high surface or interface recombination velocity; a third semiconducting region transparent at the predetermined photon energy range suitable for making an operative connection to a second contact; the second and third regions forming a second interface; the first and second regions forming a first interface; the second region being configured such that biasing the photodiode results in depletion of the second region from the first interface to the second interface or at least one of the absorption depth and the sum of the absorption depth and diffusion length from the second interface; the depletion resulting in the creation of an electric field whereby photogenerated carriers are collected by drift and a method of making the foregoing.
    Type: Application
    Filed: June 13, 2016
    Publication date: October 13, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Paul Shen, Lee Ellen Rodak, Chad Stephen Gallinat, Anand Venktesh Sampath, Michael Wraback
  • Publication number: 20160282457
    Abstract: Method for determining distance to target using a multitone nonlinear radar system comprising providing a transmitter that transmits a signal comprising at least two predetermined frequency components; receiving transmitted signal upon reflection from target; determining the phase relationships of the frequency components when signal strikes target; determining distance the signal has travelled to target based upon the phase relationship of the frequency signal components at the time of reflection from target; computing the distance to target.
    Type: Application
    Filed: April 8, 2016
    Publication date: September 29, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Gregory J. Mazzaro, Kenneth I. Ranney, Kyle A. Gallagher, Anthony F. Martone
  • Publication number: 20160284919
    Abstract: A photodiode for detecting photons comprising a substrate; first semiconducting region suitable for forming a contact thereon; a first contact; a second semiconducting region comprising an absorption region for the photons and being formed of a semiconductor having one or more of a high surface recombination velocity or a high interface recombination velocity; a second contact operatively associated with the second region; the first semiconducting region and the second semiconducting region forming a first interface; the second semiconducting region being configured such that reverse biasing the photodiode between the first and second contacts results in the absorption region having a portion depleted of electrical carriers and an undepleted portion at the reverse bias point of operation; the undepleted portion being smaller than the absorption depth for photons; whereby the depletion results in the creation of an electric field and photogenerated carriers are collected by drift; and a method of making.
    Type: Application
    Filed: June 13, 2016
    Publication date: September 29, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Anand Venktesh Sampath, Michael Wraback, Paul Shen
  • Publication number: 20160276014
    Abstract: A ferroelectric mechanical memory structure comprising a substrate, a MEMS switch element movable between a first position and at least one second position, the MEMS switch element comprising first and second electrodes, a layer of ferroelectric material positioned between the first and second electrodes so that upon application of voltage between the first and second electrodes the MEMS switch element moves between the first position and the second position, and a switch contact which contacts the first electrode only when the MEMS switch element is in the first position, wherein the ferroelectric material is selected so that the remanent strain within the layer of ferroelectric material is controlled by the history of the voltage potential applied to the ferroelectric material by the first and second electrodes, and wherein the remanent strain is sufficient to retain the MEMS switch element in the first or second position upon removal of the voltage.
    Type: Application
    Filed: April 18, 2016
    Publication date: September 22, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Glen Richard Fox, Jeffrey S. Pulskamp, Ronald G. Polcawich
  • Publication number: 20160254439
    Abstract: A method of making a piezoelectric device comprising providing a deposition chamber, the deposition chamber having reduced pressure therein; loading a substrate into the deposition chamber; sputter depositing hexagonal 001 oriented titanium on the substrate; providing an oxygen anneal to convert 001 oriented titanium into 100 oriented rutile TiO2; sputter depositing a 111 or 100 oriented textured conducting material for use as an electrode; sputter depositing a hexagonal 001 oriented titanium and providing an oxygen anneal in a lead oxide environment to convert 001 oriented titanium into 100 oriented rutile TiO2 or PbxTi1-xO3; sputter depositing textured lead zirconate titanate PbZrxTi1-x03 having an 001 orientation as a piezoelectric layer, and sputter depositing a textured electrode on top of the textured lead zirconate titanate; whereby processing of the layers within the deposition chamber provides minimized exposure to ambient contamination and improved texturing in the resulting films.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 1, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventors: Daniel M. Potrepka, James R. Mulcahy, Ronald G. Polcawich
  • Publication number: 20160248794
    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.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 25, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventor: Hasan Cam
  • Publication number: 20160236617
    Abstract: A method and apparatus for predicting vehicle speed during an indirect vision driving task. A further method and apparatus for optimizing the display of a camera return during an indirect vision driving task based on operator perceived vehicle speed as set by the display characteristics and the field-of-view of the camera. A further method and apparatus for using the perceived speed as a driving task aid, in particular, as an electronic aider for optimizing the driving scene display characteristics of scene compression and camera field-of view. In this manner, the invention adjusts the perceived speed in order to match the operator's cognitive flow to the control dynamics needed from the operator for the task. The invention has application to autonomous driving where manual intervention is incorporated during critical events for particular tasks; and with limited display space within the vehicle, the display format is adjusted by the invention according to the operator's task needs.
    Type: Application
    Filed: February 2, 2015
    Publication date: August 18, 2016
    Applicant: U.S. ARMY RESEARCH LABORATORY ATTN: RDRL-LOC-I
    Inventor: Christopher C. Smyth
  • Publication number: 20160104502
    Abstract: A nonvolatile memory comprising at least one ferromagnetic region having permeability which changes from a first state to a second state of lower permeability upon heating; at least one laser operatively associated with the at least one ferromagnetic region which selectively provides heat to the ferromagnetic region to change its p permeability; and a plurality of connectors operatively connected to the at least one laser and adapted to be connected to a current source that provides a current which causes the laser to change the at least one ferromagnetic region from a first state to a second state. Optionally, the memory is arranged as an array of memory cells. Optionally, each cell has a magnetic field sensor operatively associated therewith. Optionally, the nonvolatile memory is radiation hard. Also, a method of recording data by heating at least one ferromagnetic region to change its permeability.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 14, 2016
    Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I
    Inventor: Alan S Edelstein
  • Publication number: 20160050765
    Abstract: A system for controlled motion of circuit components to create reconfigurable circuits comprising: a support; a substrate operatively associated with the support; actuators operatively associated with the support configured to physically move circuit components and to move the circuit components into physical and electrical contact with the substrate; the substrate comprising at least one conductive segment arranged to electrically connect circuit components when electrical contacts of circuit components are placed in contact with at least one conductive segment; and control circuitry configured to control the first and second actuators to thereby position the circuit components relative to the substrate; whereby circuit function is determined by the selection of circuit components and the location and orientation of circuit components relative to the substrate and conductive segments to create a reconfigurable circuit.
    Type: Application
    Filed: August 13, 2015
    Publication date: February 18, 2016
    Applicant: U.S. ARMY RESEARCH LABORATORY ATTN: RDRL-LOC-I
    Inventor: Jeffrey Spencer Pulskamp