Digital Processing Patents (Class 342/195)
  • Patent number: 10363476
    Abstract: Systems, methods and software products optimize installation and operation of an object tracking system. Performance of the athlete tracking system is continually monitored and optimized based upon one or more of: statically positioned tags, grouping tags within two or more tag sets to assign ping rates, selecting receiver configuration and aim dynamically based upon environmental and situational conditions. Tracking tags are improved to facilitate coupling of the tag to an athlete and may be self-configurable. A trackable protection pad allows a tracking tag to be positioned substantially horizontal when the athlete is competing. A data replay tool replays location tracking information in chronological order and visually plots location of tracking tags and errors in the determined location. A tag manager automatically configures the tracking tags. A robotic vehicle automated installation of the object tracking system.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 30, 2019
    Assignee: ISOLYNX, LLC
    Inventors: Douglas J. DeAngelis, Edward G. Evansen, Gerard M. Reilly, Brian D. Rhodes, Joseph M. Gaudreau, Kirk M. Sigel, Alexander T. Farkas
  • Patent number: 10298832
    Abstract: A vehicle camera system and method for operating a vehicle camera system comprising a vehicle camera with communication capabilities. The vehicle camera operating in conjunction with other components to provide information to users. The vehicle camera system compiles information from multiple components into a single repository of video recordings with information, such as location information, vehicle status and diagnostic information, alert information and other information.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 21, 2019
    Assignee: Cobra Electronics Corporation
    Inventors: Wilfred Charles Boudreau, Michael E. Williams, Brian Neal Hosler, Jonathan Charles Levell
  • Patent number: 10290948
    Abstract: A system and methods for RF (Radio Frequency) penetration imaging of one or more objects in a medium, the system comprising: a generation and reception unit configured to generate and receive RF signals; an antenna array configured to transmit/receive the RF signals, the antenna array comprises a plurality of antennas: and a processor in communication with said antenna array, said processor is configured to analyze said RF signals and estimate the distance between the antenna array and the object, and in addition the relative orientation between the antenna array and the medium surface.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: May 14, 2019
    Assignee: VAYYAR IMAGING LTD
    Inventors: Damian Hoffman, Jonathan Rosenfeld
  • Patent number: 10254393
    Abstract: A method for filtering spatial error from a measurement vector is provided to correct for roll, pitch and yaw angular motion. The method includes the following operations: Establish an unstabilized body reference frame. Convert the measurement vector to an unstabilized state vector xU in the unstabilized body reference frame. Establish a stabilized East-North-Up (ENU) reference frame. Calculate an unstabilized pre-transform covariance matrix MU from position variance of the body reference frame. Measure roll, pitch and yaw in the body reference frame as respective angle values (r, p, w). Calculate a transform matrix T between the body reference frame and the ENU reference frame. Calculate a stabilized data vector xS=TxU from the transform matrix and the unstabilized state vector. Calculate a measured angle error sensitivity matrix MA from the angle values. Calculate a tri-diagonal angle error component matrix ME with square values of angle variance of the body reference frame.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: April 9, 2019
    Inventors: Denis Hugh McCabe, James H. Africa, Jr.
  • Patent number: 10211906
    Abstract: A wireless communication device comprises at least one antenna array configured to receive a radio signal; a first compressor configured to determine a first compression operator based on a predetermined set of receive configurations for the antenna array, and to apply the first compression operator to the radio signal to generate a first compressed signal; a second compressor configured to apply a second compression operator to the first compressed signal to generate a second compressed signal; a channel estimator configured to determine a channel covariance of the radio signal, determine at least one eigenvector of the channel covariance to obtain a second compression operator, and provide the second compression operator to the second compressor; and a baseband processor configured to receive the second compressed signal from the second compressor and to process the second compressed signal to obtain output data.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: February 19, 2019
    Assignee: Intel Corporation
    Inventors: Junyoung Nam, Oner Orhan, Hosein Nikopour, Shilpa Talwar
  • Patent number: 10211507
    Abstract: A communication device for mounting to an infrastructure, the communication device being configured for communication with a remote communication device via a directive antenna main lobe, the communication device comprising a sensor module configured to measure a movement of the communication device relative to a reference orientation.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: February 19, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Håkan Wennström, Magnus Gustafsson
  • Patent number: 10197509
    Abstract: An apparatus for processing a signal by means of electromagnetic waves according to one embodiment of the present invention can, when a radio frequency (RF) signal is radiated onto a medium through any one of a plurality of channels, simultaneously receive the radiated RF signals which have been reflected or scattered by the medium or have penetrated the medium through the plurality of channels other than the channel through which the RF signal has been radiated.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: February 5, 2019
    Assignee: MUTRONICS CO., LTD.
    Inventors: Seung-Mo Park, Tae-Wook Lim, Jae-Hong Lim, Kwang-Won Lee, Sang-Jin Kim
  • Patent number: 10078129
    Abstract: A signal processing device (2) includes an amplifier (3), an A/D converter (4) and a signal processor (5). The amplifier (3) amplifies a sensor signal that is supplied from a radio wave sensor (1) and depends on a motion of an object. The A/D converter (4) converts the sensor signal amplified by the amplifier (3) into a digital sensor signal. The signal processor (5) converts the sensor signal output from the A/D converter (4) into a frequency-domain sensor signal by Discrete Cosine Transform processing, estimates a background signal contained in the frequency-domain sensor signal, based on an error signal obtained from the sensor signal and a reference signal which is white noise, and determines a filter coefficient according to the estimated background signal, thereby operating as an adaptive filter for removing the background signal from the sensor signal in the frequency domain.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: September 18, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Satoshi Sugino
  • Patent number: 10055538
    Abstract: Methods, systems, and devices are described for identifying noisy regions in a skin conductance signal. The signal is divided into a plurality of windows. Two or more features of the signal within a first window are computed. At least one of the two or more features being in a frequency domain. At least two of the features are combined to obtain at least a first metric. The first metric is compared to a corresponding threshold. The first window is identified as a noisy region of the skin conductance signal based on the comparison.
    Type: Grant
    Filed: January 5, 2013
    Date of Patent: August 21, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Somdeb Majumdar, Aniket A. Vartak, Robert S. Tartz
  • Patent number: 10036805
    Abstract: Disclosed herein are a method and apparatus for detecting a surrounding environment based on a Continuous Wave (CW) radar sensing signal and a Frequency-Modulated Continuous Wave (FMCW) radar sensing signal. A method of detecting a target based on a Frequency-Modulated Continuous Wave (FMCW) radar sensing signal and a Continuous Wave (CW) radar sensing signal may include sending, by a radar, the CW radar sensing signal for detecting the target and receiving a first response signal that is a response to the CW radar sensing signal; sending, by the radar, the FMCW radar sensing signal for detecting the target and receiving a second response signal that is a response to the FMCW radar sensing signal; generating, by the radar, the frequency spectrum of a beat signal by performing signal processing on the first response signal and the second response signal.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: July 31, 2018
    Assignee: Mando Corportaion
    Inventors: Jae Eun Lee, Hae Seung Lim, Seong Hee Jeong
  • Patent number: 10023230
    Abstract: A driving assisting section includes a collision avoidance assisting section, which performs collision avoidance assistance for avoiding collision between a vehicle to be assisted and an object by prompting turning of the vehicle. The driving assisting section further includes a lane-keeping assisting section, which performs lane keeping assistance. An assist arbitrating section arbitrates between the collision avoidance assistance by the collision avoidance assisting section and the lane keeping assistance by the lane-keeping assisting section.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: July 17, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Minami Sato
  • Patent number: 9967087
    Abstract: A wireless receiver is disclosed. The wireless receiver includes a phased array antenna panel having a plurality of antennas, and a low resolution analog-to-digital (A/D) converter coupled to each of the plurality of antennas, where the low resolution A/D converter is configured to provide a digital output based on comparing a reference value with a sum of noise value and signal value of an analog input received by the corresponding one of the plurality of antennas. Noise signals received by the plurality of antennas are uncorrelated, and a signal to noise ratio (SNR) of the analog input can be less than one. The low resolution A/D converter can be a one-bit A/D converter. The one-bit A/D converter can be a comparator receiving the sum of noise value and signal value as one comparator input, and receiving the reference value as another comparator input.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: May 8, 2018
    Assignee: Movandi Corporation
    Inventors: Sam Gharavi, Farid Shirinfar, Michael Boers, Seunghwan Yoon, Alfred Grau Besoli, Maryam Rofougaran, Ahmadreza Rofougaran
  • Patent number: 9921307
    Abstract: Arrangements related to sensing systems and methods are described. A sensing system can include one or more LIDAR sensors. The one or more LIDAR sensors can be configured to output signals. The sensing system can include one or more RADAR sensors. The one or more RADAR sensors can be configured to output signals. The sensing system can include a processor. The processor can be operatively connected to receive signals output by the LIDAR sensor(s) and the RADAR sensor(s). The processor can be configured to process signals received from both the LIDAR sensor(s) and the RADAR sensor(s) together. In some arrangements, the LIDAR sensor(s) and the RADAR sensor(s) can be located within the same housing. In one or more arrangements, the LIDAR sensor(s) and/or the RADAR sensor(s) can be configured as a phased array. In one or more arrangements, the sensing system can be used in connection with a vehicle.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: March 20, 2018
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Paul Donald Schmalenberg, Jae Seung Lee
  • Patent number: 9885784
    Abstract: A system and method for locating a man-made object comprising a transmitter and receiver combination or transceiver configured to emit mixtures of polarizations comprising HH, VV, VH and or HV polarization images, at least one processor configured to form co-polarimetric and cross-polarimetric images, to select a pixel under test and analyze the surrounding pixels by performing spatial averaging using the cross polarimetric image, and to replace the pixel under test and the pixels adjacent thereto with an average pixel value calculated from the pixel under test and pixels adjacent thereto; the at least one processor configured to diminish background effects to produce clearer co-polarimetric and cross-polarimetric images and to locate the left-right point of symmetry indicative of a man-made object by comparing each pixel under test in the cross-polarimetric image to pixels in the vicinity to locate an intensity differential in excess of 3 dB.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: February 6, 2018
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Kenneth Irving Ranney, David Chun Wong, Tuan That Ton
  • Patent number: 9866226
    Abstract: An analog-to-digital conversion system includes a first processor, a bank of N analog-to-digital converters, and a second processor. The first processor receives M input signal streams, performs a wave-front multiplexing transform that includes a first set of wave-front vectors on the M input signal streams in analog domain and outputs concurrently N mixed signal streams, M and N being integers and N?M>1. The N analog-to-digital converters convert the N mixed signal streams from analog format to digital format and output concurrently N digital data streams. The second processor receives the N digital data streams, performs a wave-front de-multiplexing transform that includes a second set of wave-front vectors on the N digital data streams in digital domain and outputs concurrently N output data streams such that the N output data streams include M output data streams that correspond respectively to the M input signal streams.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: January 9, 2018
    Assignee: Spatial Digital Systems, Inc.
    Inventors: Donald C.D. Chang, Tzer-Hso Lin, Yuanchang Liu
  • Patent number: 9853733
    Abstract: A method and apparatus includes an optical source for a single order single-sideband suppressed-carrier optical signal with a bandwidth that scales from over 4 gigaHertz or is at least 8 GHz from an optical carrier frequency. In an example embodiment, an apparatus includes a stable laser source configured to output an optical carrier signal at a carrier frequency. The apparatus includes a radio frequency electrical source configured to output an electrical radio frequency signal with a radio frequency bandwidth less than one octave. The apparatus also includes an optical modulator configured to output an optical signal with the optical carrier signal modulated by the radio frequency signal in a plurality of orders (harmonics) of optical frequency sidebands. The apparatus further includes an optical filter configured to pass one single order optical frequency sideband of the optical signal, which sideband does not overlap the sideband of any other harmonic.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: December 26, 2017
    Assignees: Montana State University, S2 Corporation
    Inventors: Colton Richard Stiffler, Scott Henry Bekker, Kristian D. Merkel, Randy R. Reibel, William Randall Babbitt, Krishna Mohan Rupavatharam
  • Patent number: 9813231
    Abstract: A wireless receiver is disclosed. The wireless receiver includes a phased array antenna panel having a plurality of antennas, and a low resolution analog-to-digital (A/D) converter coupled to each of the plurality of antennas, where the low resolution A/D converter is configured to provide a digital output based on comparing a reference value with a sum of noise value and signal value of an analog input received by the corresponding one of the plurality of antennas. Noise signals received by the plurality of antennas are uncorrelated, and a signal to noise ratio (SNR) of the analog input can be less than one. The low resolution A/D converter can be a one-bit A/D converter. The one-bit A/D converter can be a comparator receiving the sum of noise value and signal value as one comparator input, and receiving the reference value as another comparator input.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: November 7, 2017
    Assignee: Movandi Corporation
    Inventors: Sam Gharavi, Farid Shirinfar, Michael Boers, Seunghwan Yoon, Alfred Grau Besoli, Maryam Rofougaran, Ahmadreza Rofougaran
  • Patent number: 9798795
    Abstract: A method for associate metadata to a multimedia content based on finding matches to similar multimedia content. A given input multimedia content is matched to at least another multimedia content with corresponding metadata. Upon determination of a match, the corresponding metadata is used as metadata of the given multimedia content. When a large number of multimedia data is compared a ranked list of metadata is provided. The most appropriate metadata is associated to the given multimedia content based on various criteria. The method can be implemented in any applications which involve large-scale content-based clustering, recognition and classification of multimedia data, such as, content-tracking, video filtering, multimedia taxonomy generation, video fingerprinting, speech-to-text, audio classification, object recognition, video search and any other application requiring content-based signatures generation and matching for large content volumes such as, web and other large-scale databases.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: October 24, 2017
    Assignee: Cortica, Ltd.
    Inventors: Igal Raichelgauz, Karina Odinaev, Yehoshua Y Zeevi
  • Patent number: 9783101
    Abstract: A vehicle turning alarm method and a vehicle turning alarm device are provided herein. The vehicle turning alarm method includes acquiring map information and vehicle information. The vehicle turning alarm method further includes determining a vehicle status according to the map information and the vehicle information when a vehicle approaches an intersection. The vehicle turning alarm method further includes not sending an alert message if the vehicle status is not a left-turning event.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: October 10, 2017
    Assignee: Industrial Technology Research Institute
    Inventors: An-Kai Jeng, Min-Te Sun, Yu-Chang Ho, Pei-Chen Lee, Hsin-Yu Yeh
  • Patent number: 9746546
    Abstract: Disclosed herein are a method and device for sensing a surrounding environment based on a frequency modulated continuous wave (FMCW) radar. The method for detecting a target based on an FMCW radar includes the steps of: the FMCW radar transmitting a sensing signal for detection of the target, and receiving a response signal in response to the sensing signal; the FMCW radar performing a signal processing on the response signal, and generating a frequency spectrum of a beat signal; the FMCW radar determining a detection frequency band for detection of the target within a valid frequency band of the frequency spectrum; the FMCW radar determining a threshold value to determine a target detection peak value for detection of the target among peak values of the frequency spectrum; and the FMCW radar detecting the target based on the detection frequency band and the threshold value.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: August 29, 2017
    Assignee: MANDO CORPORATION
    Inventors: Jae Eun Lee, Hae Seung Lim, Seong Hee Jeong
  • Patent number: 9733341
    Abstract: A system for testing the covariance fidelity of an optimal reduced state estimator comprises data storage devices for storing testing data, computer processors in communication with the data storage devices, and a memory storing program instructions for execution by the computer processors. Execution of the program instructions may cause the computer processors to provide an optimal reduced state estimator having state variables and unknown, multidimensional, arbitrarily time-varying parameters, subject to known bounded values. A random component and a bias component of the optimal reduced state estimator may be identified, and then separate evaluations of the components may be performed to determine a fidelity of the optimal reduced state estimator. The random component may be evaluated at a selected epoch and a Mahalanobis Distance Value determined for the random component. The bias component may be evaluated at the selected epoch and a probability of containment determined at a selected MDV.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: August 15, 2017
    Assignee: Lockheed Martin Corporation
    Inventor: Mark A. Friesel
  • Patent number: 9720079
    Abstract: Transponder transmissions may be monitored through a direct, shielded connection of an RF coupler to a transponder antenna cable. The RF coupler may be added on an antenna cable of an older-style transponder to pick up altitude and reply codes, decode the information and transmit it digitally for use by a separate external monitor. As such, the pilot may be afforded the ability to monitor the older-style transponder's altitude and reply code transmissions to air traffic control so as to determine if a failure of the transponder has occurred. By having the direct connection between RF coupler and the transponder antenna cable, no transmissions of other transponders would be received.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: August 1, 2017
    Assignee: NavWorx Incorporated
    Inventor: Bill Moffitt
  • Patent number: 9702971
    Abstract: A system and method for high-availability inverse synthetic aperture radar (ISAR). In one embodiment a set of quadratic phase vectors, each corresponding to a different acceleration, is multiplied, one at a time, in a Hadamard product, with a 3-dimensional data cube, and a fast Fourier transform (FFT) is taken of the result, to form a 2-dimensional array. The two-dimensional array is made sparse by setting to zero elements that fall below a threshold based on a coherency metric, and the sparse arrays are stacked to form a sparse 3-dimensional image. Projections of the sparse 3-dimensional image are formed for presentation to an operator or an image exploitation system.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 11, 2017
    Assignee: RAYTHEON COMPANY
    Inventors: Benjamin Mitchell, Andrew J. Patterson, Raymond Samaniego
  • Patent number: 9638793
    Abstract: A high frequency surface wave radar (HFSWR) system with improved performance. Two or more transmitters including separate transmitting antennas (120, 122, 410) are used to improve the performance of the HFSWR over the performance of a comparable system with a single transmitter. In one embodiment, two transmitters are used, and configured to transmit pulses alternately, with a time interval of at least a round-trip travel time corresponding to a maximum target range between any pair of transmitted pulses. A physical receiving antenna array (130) includes a plurality of receiving antenna elements (135), and is connected to receiver circuitry configured to distinguish returns corresponding to pulses emitted by the different transmitters. The returns are concatenated in the receiver circuitry to achieve improved resolution.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: May 2, 2017
    Assignee: Raytheon Canada Limited
    Inventors: Jian Wang, Anthony M. Ponsford, Emily Wang, Rick McKerracher
  • Patent number: 9574903
    Abstract: A method and system for performing transient multivariable sensor evaluation. The method and system includes a computer system for identifying a model form, providing training measurement data, generating a basis vector, monitoring system data from sensor, loading the system data in a non-transient memory, performing an estimation to provide desired data and comparing the system data to the desired data and outputting an alarm for a defective sensor.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: February 21, 2017
    Assignee: UChicago Argonne, LLC
    Inventors: Richard B. Vilim, Alexander Heifetz
  • Patent number: 9557406
    Abstract: A radar system is provided that uses configurable radar control software. The radar system may continually adapt over time to perform different types of radar mission by re-configuring the radar control software with mission specific configuration data. A configuration database may be provided to store the configuration data for retrieval during mission transition operations.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 31, 2017
    Assignee: Raytheon Command and Control Solutions LLC
    Inventors: Alan B. Moore, Charles G. Kristenson, Randy A. Wild
  • Patent number: 9509992
    Abstract: An image compression/decompression device achieving increased utilization efficiency of the memory bandwidth in the access to the memory used for the compression/decompression operation while maintaining ill effect on the images at a low level is realized. The image compression/decompression device comprises a data conversion unit which reduces the data access rate when original images (as input images at the time of performing the compression) and reference images (used for performing the interframe prediction) are stored in the memory by accessing the memory. The access to the memory is performed in an address sequence (order) that differs between data write and data read. This makes it possible to increase the utilization efficiency of the memory bandwidth, and further to reduce the capacity of the buffer memory used for the data read.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: November 29, 2016
    Assignee: HITACHI INFORMATION & TELECOMMUNICATION ENGINEERING, LTD.
    Inventors: Hironori Komi, Yusuke Yatabe, Kyohei Unno, Yoshiyuki Motoba, Toshiaki Hori, Yoshimasa Kashihara, Toshikazu Yanagihara
  • Patent number: 9448304
    Abstract: The present invention is directed to a system that includes a semantic reasoning engine that is configured to convert radar track data into a directed graph representation (DGR) of the predetermined surveillance region and iteratively combine the DGRs to create a weighted directed graph (WDG) aligned and superimposed with the digital map data. The WDG includes first WDG elements corresponding to moving objects detected by a radar system. The WDG is compared to historical data to obtain a surveillance detection parameter. An alarm message is generated if the surveillance detection parameter deviates from the historical data by a predetermined amount. An output device is coupled to the semantic reasoning engine and is configured to provide a representation of the digital map data, the WDG and the at least one alarm message.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: September 20, 2016
    Assignee: SRC, Inc.
    Inventor: David L. MacPherson
  • Patent number: 9417324
    Abstract: Embodiments are directed to generating a plurality of sub-images associated with a target via a synthetic aperture radar, processing, by a processor, the sub-images using a sub-aperture algorithm to generate an intermediate image, and applying, by the processor, a phase shift to the intermediate image to generate an output image.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: August 16, 2016
    Assignee: RAYTHEON COMPANY
    Inventor: Michael Y. Jin
  • Patent number: 9380471
    Abstract: Some demonstrative embodiments include devices, systems and methods of determining a Time of Arrival (ToA) of a wireless communication signal. For example, a method may include receiving a signal over a wireless communication channel, detecting a symbol boundary of a symbol of the signal, and determining a ToA of the signal based on the symbol boundary and a channel estimation of the wireless communication channel.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: June 28, 2016
    Assignee: INTEL CORPORATION
    Inventors: Yuval Amizur, Leor Banin
  • Patent number: 9348017
    Abstract: A method for ascertaining a misalignment of a radar sensor of a vehicle ascertains a misalignment angle of the misalignment using a weighted averaging of calculated differences between first and second angles of radar reflectors relative to various axes. Also described is a device for ascertaining this misalignment.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: May 24, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventor: Siegbert Steinlechner
  • Patent number: 9335408
    Abstract: Targets are detected in a scene behind a wall by first transmitting a pulse through the wall. Then, a primary impulse response is detected by a sparse regularized least squares inversion applied to received signals corresponding to the reflected pulse. A delay operator that matches the primary impulse response to similar impulse responses in the received signals is also determined. A distortion of the pulse after the pulse passes through the wall but before the pulse is reflected by the target can also be determined. The distortion is used in an iterative process to refine the detection of the target and to suppress ghosting artifacts.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: May 10, 2016
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventor: Hassan Mansour
  • Patent number: 9305244
    Abstract: An apparatus and a method are disclosed for tracking a plurality of targets (e.g. land-based vehicles) The method can include: for a first time-step, estimating a state of each target; at a second time-step, measuring values for a state of a target; for the second time-step, estimating a state of each target using the estimated target states for the first time-step; updating the estimated target states for the second time-step using the measured values; and performing an identity management process to estimate a probability that a particular state measurement corresponds to a particular target by providing a mixing matrix, wherein an element of the mixing matrix is based on an overlap between the updated estimated target states of targets in an underlying state space of the estimated target states.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: April 5, 2016
    Assignee: BAE SYSTEMS plc
    Inventors: George Morgan Mathews, David Nicholson
  • Patent number: 9250323
    Abstract: A method and system for forming an image comprising at least one processor for performing the following: initializing an N by P image array IO by setting all values to a large number; inputting at least one image frame; randomly selecting and removing a subset of pixel locations from the total number of available pixel locations to form a preliminary image array IC; for each pixel location comparing the complex magnitude of each pixel in the image array IO with the magnitude of the corresponding pixel in image array IC, and if the pixel value in the image array IC is smaller than the corresponding pixel in the image array IO or if the IC value equals 0, then the current pixel value in image array IO is replaced by the pixel value in the image array IC; and repeating for a number of iterations to form an image.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: February 2, 2016
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Kenneth I. Ranney, Anthony F. Martone, Roberto Innocenti, Lam H. Nguyen
  • Patent number: 9250314
    Abstract: Radar signals can be detected by a Wireless Local Area Network (WLAN) receiver by modifying one or more pattern matching attributes. In one embodiment, the pattern matching attributes are modified when signal pulses received by the WLAN receiver are determined to have an increased likelihood of being radar signals. In one embodiment, a frequency variance of received signal pulses is used to determine the likelihood of received signal pulses being radar signals. The frequency variance is based, at least in part, on frequencies of Fast Fourier Transforms of the received signal pulses.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: February 2, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Meriam Khufu Ragheb Rezk, Mahboobul Alem
  • Patent number: 9188669
    Abstract: A high resolution processing device that is provided to a target finder for detecting a presence of a target, and that increases resolution of a received signal received by the target finder, includes a first change amount calculator, a second change amount calculator, a coefficient setting component, and an output signal production component. The first change amount calculator calculates as a first change amount an amount of change in the received signal received by the target finder per unit quantity in one direction of an angle direction and a distance direction. The second change amount calculator calculates as a second change amount an amount of change in the first change amount per unit quantity in the one direction. The coefficient setting component sets at least one coefficient based on the first change amount and the second change amount.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: November 17, 2015
    Assignee: FURUNO ELECTRIC COMPANY LIMITED
    Inventor: Akihiro Hino
  • Patent number: 9107203
    Abstract: A femtocell telecommunication system equipment comprising: a base apparatus structured to provide a first information signal and control signals; an electrical conductor based transmission line connected to said base apparatus; a bidirectional conversion apparatus adapted to receive/transmit from/on the transmission line the first signal and the control signals; the bidirectional apparatus comprising: a processing module structured to process the first signal to generate a second information signal and vice-versa; the second signal being adapted to be transmitted/received by an antenna device connectable to the bidirectional apparatus.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: August 11, 2015
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Umberto Spagnolini, Jonathan Gambini, Mauro Arigossi
  • Patent number: 9091758
    Abstract: A detection and ranging system includes: M transmitting sensor elements configured to transmit a probe signal; N receiving sensor elements configured to receive an echo signal generated upon reflection of the probe signal from a target; a matrix generator configured to generate a third matrix by multiplying a first matrix by a second matrix, the first matrix including as diagonal components L received signals obtained from an effective receiving sensor array formed by synthesizing the M transmitting sensor elements and the N receiving sensor elements, the second matrix being formed of P L-dimensional vectors that are linearly independent of each other; and an estimator configured to estimate a direction of arrival of the echo signal from the target according to a pseudo covariance matrix generated by multiplying the third matrix by Hermitian conjugate transposition of the third matrix.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: July 28, 2015
    Assignees: FUJITSU LIMITED, FUJITSU TEN LIMITED
    Inventors: Kazuo Shirakawa, Yasuhiro Kurono
  • Publication number: 20150145716
    Abstract: The systems and methods use Hermetic Transform processing to achieve higher resolution in space, time, and frequency measurements, leading to enhanced object detection, localization, and classification, and can improve several aspects of RADAR, including: phased-array beamforming, Doppler filter processing, pulse compression/replica correlation, and in the creation of higher resolution ambiguity function measurements for both multi-static active and passive RADAR.
    Type: Application
    Filed: November 24, 2014
    Publication date: May 28, 2015
    Inventor: Harvey C. WOODSUM
  • Patent number: 9041592
    Abstract: A radar sensor and a method of detecting an object by using the same are provided. The method includes: receiving at least one radar signal reflected from the object; converting the received at least one radar signal to at least one signal in a frequency domain; accumulating the converted at least one signal for a predetermined time and extracting at least one feature from the accumulated at least one signal; and identifying the object by comparing the extracted at least one feature with at least one reference value stored in a database.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: May 26, 2015
    Assignee: SAMSUNG TECHWIN CO., LTD.
    Inventor: Ki-Yong Jeon
  • Patent number: 9035824
    Abstract: A system and method of radar location comprises radar signal emission means, an emitted pulse of duration T1 and index i starting at instant T2(i); means receiving reflected radar signals; means determining correlation between reconstruction of an emitted pulse and signal received during the time interval between T2(i)+2*T1 and T2(i+1). The means determining a correlation can reconstruct a set, of at least one truncated pulse j of duration T3(j), less than T1, corresponding to the final part of said emitted pulse, said truncated pulses having increasing respective durations, determining at least one first correlated signal j by correlation of said truncated pulse j and signal received during time interval between T2(i)+T1 and T2(i)+T1+T3(j) and determining a second signal, based on first correlated signals j, by copying the time interval, of said correlated signal j, between T2(i)+T1+T3(j) and T2(i)+T1+T3(j+1), onto the time interval, of said second signal, between T2(i)+T1+T3(j) and T2(i)+T1+T3(j+1).
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: May 19, 2015
    Assignee: Thales
    Inventors: Stéphane Kemkemian, Jean-Paul Artis, Jean-Michel Quellec
  • Patent number: 9035819
    Abstract: The architecture includes a passive radar using opportunistic transmitters and a plurality of active radars that cooperate in the form of a coalition to assure the surveillance of an area of space. The passive radar and the active radars that form the architecture include means for exchanging information and the passive radar is configured to adopt two alternate operating modes: (i) a “watching” mode in which the passive radar carries out surveillance of the area of space concerned and generates detection information, and (ii) an “on-demand data feed” mode in which the passive radar executes at the request of one or more active radars an object search in a given sector of the area under surveillance or an analysis of certain characteristics of the signal received in a given sector.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: May 19, 2015
    Assignee: Thales
    Inventor: Sébastien Allam
  • Patent number: 9030353
    Abstract: This disclosure provides an information display device. The information display device includes an acquirer for acquiring positional information on one or more display targets including at least one of a landmark serving as a reference mark used when a movable body is in move, another movable body, and a location registered by an operator, and a controller for displaying positional information and circumferential information on the movable body in an information display area, associating at least one of the one or more display targets of which a position is outside the information display area with a direction to which the at least one of the one or more display targets is located centering on the movable body, and displaying the at least one of the one or more display targets in an outer circumferential area of the information display area.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: May 12, 2015
    Assignee: Furuno Electric Company Limited
    Inventor: Yugo Kubota
  • Patent number: 9030351
    Abstract: A land-based Smart-Sensor System and several system architectures for detection, tracking, and classification of people and vehicles automatically and in real time for border, property, and facility security surveillance is described. The preferred embodiment of the proposed Smart-Sensor System is comprised of (1) a low-cost, non-coherent radar, whose function is to detect and track people, singly or in groups, and various means of transportation, which may include vehicles, animals, or aircraft, singly or in groups, and cue (2) an optical sensor such as a long-wave infrared (LWIR) sensor, whose function is to classify the identified targets and produce movie clips for operator validation and use, and (3) an IBM CELL supercomputer to process the collected data in real-time. The Smart Sensor System can be implemented in a tower-based or a mobile-based, or combination system architecture. The radar can also be operated as a stand-alone system.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: May 12, 2015
    Assignee: Vista Research, Inc.
    Inventors: Phillip A. Fox, Joseph W. Maresca, Jr.
  • Publication number: 20150123841
    Abstract: A new method for processing search radar data is revealed using the mathematics of random matrix theory. During the time that the radar receiver is listening for return target echos, the raw data stream is fed to an analogue to digital converter to create a sample voltage file. This sample voltage file is processed by a digital signal processor that computes the eigenvalues of a sample covariance matrix generated for each pulse duration interval. The ratio of the largest to smallest eigenvalue is determined and compared to the system noise eigenvalue ratio. The sensitivity for detecting targets over the present state of the art is expected to be an approximate enhancement factor of one thousand, due to the detection of coherent energy instead of a transmitted waveform. The increase of detection distance for same radar cross section is expected to be an approximate 5.6 enhancement factor.
    Type: Application
    Filed: November 10, 2014
    Publication date: May 7, 2015
    Inventor: Peter Dan Morley
  • Patent number: 9024808
    Abstract: A method of determining a filling level comprising transmitting a first transmit signal exhibiting a first ratio between bandwidth number of frequencies; receiving a first reflection signal; mixing the first transmit signal and the first reflection signal to form a first intermediate frequency signal; and determining a first data set indicative of a first set of surface echo candidates based on the first intermediate frequency signal. The method further comprises transmitting a second transmit signal exhibiting a second ratio between bandwidth and number of frequencies being different from the first ratio; receiving a second reflection signal; mixing the second transmit signal and the second reflection signal to form a second intermediate frequency signal; and determining a second data set indicative of a second set of surface echo candidates based on the second intermediate frequency signal. The filling level determined based on subsets of the first and second sets.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 5, 2015
    Assignee: Rosemount Tank Radar AB
    Inventor: Mikael Kleman
  • Patent number: 9024805
    Abstract: Methods and systems of determining the altitude of an aircraft are provided. The method includes receiving data associated with aircraft position, a position of a first point and a second point on the runway, and an altitude of the first point and the second point, radar returns from the runway. The method includes determining a first range and second range between the aircraft, and the first point and the second point. The method includes determining a first angle and a second angle between the first point and second point, and the aircraft. The method includes determining a corrected angle. The method includes determining the altitude of the aircraft based on the corrected angle, the runway altitude of at least one of the first point and the second point, and at least one of the first range and the second range.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: May 5, 2015
    Assignee: Rockwell Collins, Inc.
    Inventors: Richard D. Jinkins, Daniel L. Woodell, Richard M. Rademaker
  • Patent number: 9024816
    Abstract: A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: May 5, 2015
    Assignee: Raymarine UK Limited
    Inventors: Richard Jales, Andrew Lawrence, Matthieu Maindrou
  • Patent number: 9024815
    Abstract: A direct-to-digital software defined radar system includes a high-speed digitizer coupled directly to a receive antenna and outputs a digital signal to a processor which receives the digitized signal, along with an arbitrarily-defined reference signal provided by signal generator, and indexes the signal data according to time and geo-location, arranges the data according to a three-dimensional data structure, declutters and filters and refines the data for storage or display.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: May 5, 2015
    Assignee: Brooks Engineering International, LLC
    Inventor: John W. Brooks
  • Publication number: 20150109166
    Abstract: A radar unit and a method for operating a radar unit.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 23, 2015
    Inventor: Thomas Hesse