Combined With Determining Distance Patents (Class 342/109)
  • Patent number: 10712428
    Abstract: There is provided a radar device for detecting a target based on a frequency-modulated transmission wave and reflected waves of the transmission wave from the target. An extracting unit configured to extract peaks corresponding to the target based on beat signals which are differential waves between the transmission wave and the reflected waves. A generating unit configured to generate instantaneous values corresponding to the peaks based on the peaks extracted by the extracting unit. A filtering unit configured to generate a target data item corresponding to the instantaneous values by performing chronological filtering on the instantaneous values generated by the generating unit. The filtering unit can assign a plurality of instantaneous values to an assignment range corresponding to one target data item, based on individual elements included in the instantaneous values.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: July 14, 2020
    Assignee: DENSO TEN LIMITED
    Inventors: Seiya Fujitsu, Hisateru Asanuma
  • Patent number: 10670709
    Abstract: A controller comprises a communication interface to receive an anchor localization dataset comprising a plurality of anchor range measurements and a processing circuitry to identify a qualified subset of anchor range measurements from the anchor localization dataset, wherein the anchor range measurements in the qualified subset are consistent, select a first anchor range measurement in the anchor localization dataset from outside the qualified subset of anchor range measurements, and add the first anchor range measurement to the qualified subset of anchor range measurements when the first anchor range measurement is consistent with the anchor range measurements in the qualified subset of anchor range measurements.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: June 2, 2020
    Assignee: INTEL CORPORATION
    Inventors: Ke Ding, Alexander Essaian, Daniel Gurdan, Jun Li, Martin Moerth, Lei Yang, Xue Yang
  • Patent number: 10634781
    Abstract: A method, system and computer program product for computing a target distance estimate using a wireless device. A waveform is transmitted to an object (e.g., automobile) by a wireless device. Reflections of the waveform are then received, such as on two forward directional antennas. A channel impulse response (e.g., a frequency-domain channel impulse response) is then obtained from the reflections. A parameterized function is applied to the channel impulse response. Parameters of the parameterized function are fitted to measure the channel impulse response. A distance to the object is then estimated based on the fitted parameters. In this manner, by operating wireless devices as radar devices, a higher accuracy in target range estimates can be achieved with less spectrum bandwidth when compared to standard radar waveforms with standard radar processing. Furthermore, by utilizing wireless devices as opposed to radar devices, the cost problem associated with radar is addressed.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: April 28, 2020
    Assignee: Board of Regents, The University of Texas System
    Inventors: Robert Heath, Robert Daniels
  • Patent number: 10634788
    Abstract: A distance measuring method and a distance meter for a distance measurement according to the principle of a frequency-modulated continuous wave radar, wherein at least a part of a first laser radiation, which comprises a first frequency modulation defining a first modulation band, and at least a part of a second laser radiation, which comprises a second frequency modulation defining a second modulation band, are emitted as the first or as the second emission radiation, respectively, to a target. A parameter is determined, which is indicative of a frequency offset between the first and the second modulation band, and the parameter is taken into consideration during the determination of the at least one distance to the target to derive a frequency difference between the first frequency modulation and the second frequency modulation.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: April 28, 2020
    Assignee: HEXAGON TECHNOLOGY CENTER GMBH
    Inventor: Marcel Rohner
  • Patent number: 10621868
    Abstract: A method includes: receiving, at a host vehicle, a plurality of messages transmitted using Vehicle-to-Vehicle (V2V) communications indicating a heading angle and a speed of a remote vehicle; calculating an expected change in frequency of the plurality of messages received at the host vehicle based on the heading angle and the speed of the remote vehicle; measuring an actual change in frequency of the plurality of messages received at the host vehicle due to the Doppler effect; comparing the expected change in frequency to the actual change in frequency; and determining that the plurality of messages were not transmitted from the remote vehicle when a difference between the expected change in frequency and the actual change in frequency exceeds a predefined frequency change threshold.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: April 14, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Mohammad Naserian, Allan Lewis
  • Patent number: 10598766
    Abstract: A method for ascertaining operating data of a radar sensor, including transmitting defined data of a first subsequence of ramp signals to an RF component of the radar sensor; ascertaining the data of the remaining subsequences of the ramp signals from the defined values of the first subsequence with the aid of the RF component; and storing the ascertained data of the remaining subsequences in a first memory of the RF component.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: March 24, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Dirk Steinbuch, Karin Moertlbauer, Matthias Steinhauer, Michael Ott
  • Patent number: 10578729
    Abstract: A ranging method and apparatus are provided. The method includes: sending a ranging signal to a measured system, where the measured system includes at least one reflection point (S110); receiving a first spectrum signal obtained after the ranging signal is reflected by the at least one reflection point (S120); determining a second spectrum signal according to the first spectrum signal, where the second spectrum signal includes the first spectrum signal, and a spectral width of the second spectrum signal is greater than a spectral width of the first spectrum signal (S130); and estimating a distance of the at least one reflection point according to the second spectrum signal (S140). According to the ranging method and apparatus, a distance of a reflection point in a measured system can be determined in a relatively accurate manner, so as to improve ranging accuracy.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: March 3, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Yan Wang
  • Patent number: 10551488
    Abstract: A detection method implementing an FMCW waveform is provided, the emitted waveform is formed of a recurring pattern of given period Tr covering an emission frequency band of given width B, each pattern being divided into a given number P of sub-patterns of duration Tr/P covering an excursion frequency band ?F=B/P, the sub-patterns being mutually spaced by a frequency interval equal to ?F.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: February 4, 2020
    Assignee: THALES
    Inventors: Pascal Cornic, Patrick Le Bihan, Jean-Michel Quellec
  • Patent number: 10545227
    Abstract: A method for determining distances and relative velocities of objects with using a radar includes transmitting a ramp-like frequency-modulated transmission signal whose modulation pattern includes multiple sequences of ramps having an identical ramp slope, which alternately follow each other, the sequences having a frequency offset and a time offset with respect to each other; Undersampling, and subjecting to a 2D Fourier transform, base band signals for the individual ramps; determining hypotheses for the distance and the relative velocity v of an object based on alternative distance-velocity relationships and based on periodic ambiguous information about velocity; ascertaining degrees of the agreements of a phase relationship between spectral values of the spectra with phase relationships expected for the hypotheses between spectral values of the sequences; and determining unambiguous estimated values for the distance and the relative velocity by selecting a hypothesis having the maximum agreement.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: January 28, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Goetz Kuehnle, Michael Schoor
  • Patent number: 10473757
    Abstract: This disclosure is directed to techniques for an FMCW radar system to determine an unambiguous radial velocity of a target. The radar system measures the Doppler shift in the received return signal reflected from the target, while the radar system simultaneously performs normal surveillance functions. Such a radar system may digitize the beat frequency that results from mixing the received return signal from a target the transmitted signal for a given frequency ramp. The radar system may divide the usable digitized samples at the output of an analog-to-digital converter (ADC) into a number of subsets and analyze the frequencies in each subset. Because each subset of samples covers a time interval that may be substantially less than the period of each frequency ramp, the radar system may extract without ambiguity the Doppler velocity of a target within as little as the period of single frequency ramp.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: November 12, 2019
    Assignee: Honeywell International Inc.
    Inventor: John B. Mckitterick
  • Patent number: 10473753
    Abstract: A fill level measurement device is provided, including a transmission branch configured to generate and emit a transmission signal towards a filling material surface; and a receiving branch configured to receive and evaluate a received signal, wherein the fill level measurement device is configured to selectively assume an interfering signal detection mode for detecting whether the received signal comprises an interfering signal, and a fill level measurement mode for measuring the fill level, and wherein the transmission signal has a lower intensity in the interfering signal detection mode than in the fill level measurement mode.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: November 12, 2019
    Assignee: VEGA GRIESHABER KG
    Inventor: Michael Fischer
  • Patent number: 10451721
    Abstract: There is provided a radar device. An extracting unit is configured to extract peak signals from a frequency difference between a transmission signal and a reception signal, in a first range of each of a first period and a second period. An estimating unit is configured to estimate a current peak signal on the basis of a previous peak signal extracted by the extracting unit. A first setting unit is configured to set the first range on the basis of the estimation result. A second setting unit is configured to set a second range different from the first range, if the peak signal is extracted in the first range of the second period and the peak signal cannot be extracted in the first range of the first period. A re-extracting unit is configured to extract the peak signal in the second range of the first period.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: October 22, 2019
    Assignee: FUJITSU TEN LIMITED
    Inventor: Hisateru Asanuma
  • Patent number: 10436891
    Abstract: A radar sensor for detecting at least one object, having a control device to receive a control input signal; a signal generator to generate a transmit signal having a multitude of signal cycles, each signal cycle having a multitude of signal sequences, and a series of blocks being formed, each block having precisely one frequency ramp of each signal sequence, and the signal generator furthermore being designed to select a predefined quantity of blocks from the transmit signal based on the control input signal and to output them as output signal; an antenna device to transmit the output signal that is output by the signal generator and to receive a receive signal; and an evaluation device which is designed to ascertain, by superpositioning the transmit signal and the receive signal, a quantity with regard to an angle and/or a distance and/or a relative speed of the at least one object.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: October 8, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Michael Schoor
  • Patent number: 10436890
    Abstract: A method for finding a position of an object using a MIMO FMCW radar. A ramp-shaped frequency-modulated radar signal is transmitted as a sequence of time-delayed successive ramps. A switch network is controlled to provide a corresponding switching state for each of the successive ramps. A different selection of antenna elements is used for transmission of each respective ramp. Radar echoes reflected by radar targets are mixed with the transmitted signal and are down-converted. Baseband signals resulting therefrom are transformed into spectra. Each baseband signal is separately subjected to a two-dimensional Fourier transform. A window function is applied to each of the baseband signals prior to the transform being carried out over a ramp index in a second dimension. A different window function is applied for each of the switching states. The spectra are subjected to a frequency-dependent phase correction which compensates for time offsets of the ramps.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: October 8, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Benedikt Loesch, Michael Schoor
  • Patent number: 10416299
    Abstract: A MIMO FMCW radar sensor and a MIMO time multiplexing method for localizing a radar target, in which an FMCW radar measurement is performed with a transmitted signal whose modulation pattern encompasses, for different transmission switching states that differ in terms of the selection of antenna elements used for transmission, mutually temporally interleaved sequences of ramps; ambiguous values for the relative velocity of the radar target are determined from a position of a peak in a two-dimensional spectrum; phase relationships between spectral values of spectra are checked for agreement with phase relationships expected for several of the determined values of the relative velocity; on the basis thereof, an estimated value for the relative velocity of the radar target is selected from the determined periodic values of the relative velocity; and the angle of the radar target is determined on the basis of amplitudes and/or phase relationships between obtained baseband signals.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: September 17, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Michael Schoor, Benedikt Loesch
  • Patent number: 10408932
    Abstract: An environment recognition system using vehicular millimeter wave radar includes a millimeter wave radar device detecting obstructions outside a vehicle and transforming detection results into reflection information. An energy intensity calculation device, an anti-noise calculation device, and an obstruction width calculation device are signally connected with the millimeter wave radar device to receive the reflection information, respectively calculate energy intensity information, signal-to-noise ratios and width information of the obstructions and transmit them to a control device. The control device integrates the energy intensity information, the signal-to-noise ratios and the width information to recognize types of the obstructions. The present invention can effectively recognize various obstructions outside the vehicle whereby the vehicle immediately reacts like performing a corresponding safety anti-collision system when detecting pedestrians.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: September 10, 2019
    Assignee: Automotive Research & Testing Center
    Inventors: Ping-Min Hsu, Tzu-Sung Wu
  • Patent number: 10401487
    Abstract: The disclosure relates to a radar device for a vehicle, enabling distance and velocity of a target approaching at a high speed in a short distance to be measured while securing a detection performance of the target. The radar device includes at least: a transmission unit configured to transmit, as a transmission signal, a multi-chirp signal having different slopes through the transmission antenna; a reception unit configured to receive, through the reception antenna, a reception signal that is the transmission signal reflected on the target located before the vehicle, in which the transmission signal is transmitted by the transmission unit; and a signal processing unit configured to calculate a frequency difference between the transmission signal and the reception signal, frequency variation according to a distance of the target, and frequency variation according to the velocity of the target to measure the distance and velocity of the corresponding target.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: September 3, 2019
    Assignee: MANDO CORPORATION
    Inventors: HaeSueng Lim, JaeEun Lee, Seong Hee Jeong
  • Patent number: 10401490
    Abstract: This document describes apparatuses and techniques for radar-enabled sensor fusion. In some aspects, a radar field is provided and reflection signals that correspond to a target in the radar field are received. The reflection signals are transformed to provide radar data, from which a radar feature indicating a physical characteristic of the target is extracted. Based on the radar features, a sensor is activated to provide supplemental sensor data associated with the physical characteristic. The radar feature is then augmented with the supplemental sensor data to enhance the radar feature, such as by increasing an accuracy or resolution of the radar feature. By so doing, performance of sensor-based applications, which rely on the enhanced radar features, can be improved.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: September 3, 2019
    Assignee: Google LLC
    Inventors: Nicholas Edward Gillian, Carsten C. Schwesig, Jaime Lien, Patrick M. Amihood, Ivan Poupyrev
  • Patent number: 10379213
    Abstract: Provided is a moving body rotation speed measurement device that makes it possible for a user or the like to easily measure the rotation speed of a spherical moving body. An input unit receives diameter information about a spherical moving body. A measurement processing unit calculates the movement speed and rotation speed of the moving body on the basis of a Doppler signal and the diameter information. The measurement processing unit calculates the movement speed using the maximum peak value of a Doppler signal obtained continuously over a predetermined measurement time and calculates the rotation speed using the maximum frequency width value of the Doppler signal. A display unit shows display content that includes the calculated movement speed and rotation speed.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: August 13, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Hiroshi Saegusa, Tsuyoshi Kitazaki
  • Patent number: 10369998
    Abstract: A variety of methods, controllers and algorithms are described for controlling a vehicle to closely follow one another safely using automatic or partially automatic control. The described control schemes are well suited for use in vehicle platooning and/or vehicle convoying applications, including truck platooning and convoying controllers. In one aspect, a power plant (such as an engine) is controlled using a control scheme arranged to attain and maintain a first target gap between the vehicles. Brakes (such as wheel brakes) are controlled in a manner configured to attain and maintain a second (shorter) target gap. Such control allows a certain degree of encroachment on the targeted gap (sometimes referred to as a gap tolerance) before the brakes are actuated. The described approaches facilitate a safe and comfortable rider experience and reduce the likelihood of the brakes being actuated unnecessarily.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: August 6, 2019
    Assignee: Peloton Technology, Inc.
    Inventors: James B. Kuszmaul, Austin B. Schuh, Stephen M. Erlien, Joshua P. Switkes
  • Patent number: 10365358
    Abstract: A multi-input multi-output (MIMO) radar system and method of performing low-latency decoding in a MIMO radar system. The method includes transmitting a different linear frequency-modulated continuous wave (LFM-CW) transmit signal from each of N transmit elements of the MIMO radar system, each transmit signal associated with teach of the N transmit elements including a respective code, and receiving reflections associated with each of the transmit signals from each of the N transmit elements at each receive element of the MIMO radar system. Processing each symbol corresponding with each received reflection on a symbol-by-symbol basis is done to obtain a respective decoded signal prior to receiving all the received reflections associated with all the N transmit elements, wherein the processing includes using a Hadamard matrix with N columns in which each column is associated with the respective code transmitted by each of the N transmit elements.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: July 30, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alexander Pokrass, Igal Bilik, Shahar Villeval
  • Patent number: 10317522
    Abstract: A system and method are provided for detecting and identifying elongated objects relative to a host vehicle. The method includes detecting objects relative to the host vehicle using a plurality of object detection devices, identifying patterns in detection data that correspond to an elongated object, wherein the detection data includes data fused from at least two of the plurality of object detection devices, determining initial object parameter estimates for the elongated object using each of the plurality of object detection devices, calculating object parameter estimates for the elongated object by fusing the initial object parameter estimates from each of the plurality of object detection devices, and determining an object type classification for the elongated object by fusing the initial object parameter estimates from each of the plurality of object detection devices.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: June 11, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Wei Tong, Shuqing Zeng, Jinsong Wang, Wende Zhang
  • Patent number: 10288738
    Abstract: Devices, systems, and methods for determining azimuth, elevation, or object position relative to a baseline using an integrated sighting device. The integrated sighting device includes a GPS receiver, an inertial measurement unit (IMU), an optical aperture, a microcomputer, and a handheld housing. The integrated sighting device, during transit from a reference position to a sighting position, determines a first angle between the sighting position and the reference position based on carrier phase input received during the transit. Orientation input is received from the IMU at the sighting position as the integrated sighting device is aimed and sighted along a line of sight to the reference position. The baseline is generated based on a second angle of the orientation input correlating with the first angle. The baseline is used as a reference for determining azimuth, elevation, or position of other objects or devices.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: May 14, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Steven E. Koenck, James H. Doty, Brad A. Walker, Michael C. Gokay
  • Patent number: 10209345
    Abstract: A signal processing unit and a method for searching for peaks in a two-dimensional matrix of numbers are described. The matrix is analyzed row by row and then column by column. Analyzing a row comprises, for each element of the row, tagging the element in response to determining that the element is a local maximum of the row Analyzing a column comprises determining a bit field associated with the column by determining, for each element of the column, a corresponding bit field element Determining the bit field element comprises: if the element of the column has not been tagged, setting the bit field element to a predefined first value, and, if the element of the column has been tagged, determining whether the element is a local maximum and, in this case, setting the bit field element to a predefined second value different from the first value and, otherwise, setting the bit field element to the first value.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: February 19, 2019
    Assignee: NXP USA, Inc.
    Inventors: Maik Brett, Deboleena Sakalley, Rohit Tomar
  • Patent number: 10151832
    Abstract: The invention relates to a method for determining the distance (R) and relative speed (v) of at least one object remote from an observation point, comprising the following method steps: continuous transmission of at least one first and one second electromagnetic signal in each case of a signal period (Tchirp) from the observation point; the signals consist of signal portions (bursts) having a constant frequency and a predetermined equal duration, wherein the signal portions of a signal cover a predetermined modulation range by means of frequency steps; the signals are transmitted interlaced in that signal portions of the different signals follow one another in time, wherein a frequency hop occurs between the successive signal portions of different signals, receiving the signals reflected by the object as an echo signal and carrying out a mixed operation with the transmission signal for transformation of the received signal into the baseband in a common analog channel; carrying out an analog-to-digital convers
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: December 11, 2018
    Assignee: S.M.S. SMART MICROWAVE SENSORS GMBH
    Inventors: Ralph Mende, Fabian Kyrisch
  • Patent number: 10145954
    Abstract: A radar system processes signals in a flexible, adaptive manner to determine range, Doppler (velocity) and angle of objects in an environment. The radar system processes the received signal to achieve different objectives depending on one or more of a selected range resolution, a selected velocity resolution, and a selected angle of arrival resolution, as defined by memory requirements and processing requirements. The system allows improved resolution of range, Doppler and/or angle depending on the memory requirements and processing requirements.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: December 4, 2018
    Assignee: Uhnder, Inc.
    Inventors: Curtis Davis, Monier Maher, Jean P. Bordes, Manju Hegde, Otto A. Schmid, Raghunath K. Rao, Marius Goldenberg, Aria Eshraghi, Vito Giannini, David S. Trager, Nikhilesh Bhagat, Srikanth Gollapudi, Sundar Govindarajan, Steve Borho, Jonathan Preussner, Paul W. Dent, Paul Bassett, Stephen W. Alland, Fred Harris, Wayne E. Stark, Murtaza Ali
  • Patent number: 10142595
    Abstract: A driving assistance device includes a camera, a moving object detector, a candidate reflection region detector, a predetermined position brightness detector and a cause determiner. The moving object detector and the candidate reflection region detector set a detection region for detecting, from image data captured by the camera, an existence of an adjacent vehicle in an adjacent lane. The predetermined position brightness detector detects a candidate light projecting object which projects light with brightness equal to or higher than a predetermined threshold value. The cause determiner determines whether or not there exists a candidate light projecting object which indicates the existence of the adjacent vehicle in the detection region.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: November 27, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Chikao Tsuchiya, Yasuhisa Hayakawa, Shinya Tanaka, Osamu Fukata
  • Patent number: 10139488
    Abstract: The present invention provides a new art for grasping a moving direction of an underwater vehicle. In order to grasp the moving direction of the underwater vehicle, a measurement apparatus 2000 is installed in an underwater vehicle 4000. An electromagnetic wave receiving unit 2020 receives an electromagnetic wave signal, which a signal outputting apparatus 3000 outputs with a first frequency, in the water. A sound receiving unit 2040 receives a sound signal, which the signal outputting apparatus 3000 outputs with a second frequency, in the water. A frequency calculating unit 2050 calculates a frequency of the electromagnetic wave signal which the electromagnetic wave receiving unit 2020 receives, and a frequency of the sound signal which the sound receiving unit 2040 receives.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: November 27, 2018
    Assignee: NEC CORPORATION
    Inventor: Yoshinori Hama
  • Patent number: 10082563
    Abstract: A target identifier can be configured to determine a synthesized profile for a target based on active sensor data that characterizes a radio frequency (“RF”) signal reflected by the target and received at an active sensor system. The synthesized profile can characterize an estimated Line of Bearing (“LoB”) and a radial speed (“Rdot”) of the target relative to a passive sensor system. The target identifier can also be configured to match the synthesized profile with a measured profile that is determined based on RF signals received at the passive sensor system. The measured profile characterizes a measured LoB and a measured Rdot of the target.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: September 25, 2018
    Assignee: Northrop Grumman Systems Corporation
    Inventors: David K. Mesecher, Zyad Hajo
  • Patent number: 10067221
    Abstract: A frequency modulated continuous wave (FMCW) radar system is provided that includes a receiver configured to generate a digital intermediate frequency (IF) signal, and an interference monitoring component coupled to the receiver to receive the digital IF signal, in which the interference monitoring component is configured to monitor at least one sub-band in the digital IF signal for interference, in which the at least one sub-band does not include a radar signal.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: September 4, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Brian Paul Ginsburg, Karthik Subburaj, Karthik Ramasubramanian, Sachin Bhardwaj, Sriram Murali, Sandeep Rao
  • Patent number: 10055122
    Abstract: A method for the determination of a speed vector for a gesture recognition system in a motor vehicle is disclosed. The method includes detection of movement data by a detection unit, and transmission of the movement data to a processing unit in the form of vectors. A totalling of the vectors to form a total vector occurs using the processing unit, until either the total vector reaches a predetermined minimum length or a predetermined number of vectors is totalled. If the predetermined number of vectors is totalled and the predetermined minimum length of the total vector is not reached, a determination of the speed vector as a zero vector occurs. If the predetermined minimum length of the total vector is reached, a determination of the speed vector occurs by averaging the information contained in the total vector. An accurate and dynamic determination of the speed vector is thereby achieved.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 21, 2018
    Assignee: Daimler AG
    Inventor: Volker Entenmann
  • Patent number: 10042040
    Abstract: A vehicle radar device provided with a transmission and reception unit for generating a beat signal from a transmission signal and a reception signal, a frequency analysis unit for generating a two-dimensional spectrum including a speed component and a distance component by applying prescribed frequency analysis processing to a signal sequence of the beat signal, and a speed determination unit for dividing the speed component of the two-dimensional spectrum into a plurality of blocks, carrying out constant false alarm rate (CFAR) processing on each of the plurality of blocks, and specifying the speed of the vehicle of the radar device on the basis of a threshold obtained through the CFAR processing.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: August 7, 2018
    Assignees: JAPAN RADIO CO., LTD., NISSHINBO HOLDINGS INC.
    Inventors: Tetsuya Kobori, Hiroki Sugawara, Yukinobu Tokieda, Takahiro Hotta, Naoto Saito
  • Patent number: 10037698
    Abstract: Operating a host vehicle is described as including identifying remote vehicle information indicating a geospatial state and a kinematic state for a remote vehicle and identifying host vehicle information indicating a geospatial state and a kinematic state for the host vehicle. For a sequence of sampling points, a converging time to a converging location within a transportation network is determined based on the remote vehicle information and the host vehicle information. Operation of the host vehicle is modified to a modified operation responsive to the converging time, having been above a first threshold, falling below the first threshold, and the modified operation of the host vehicle is maintained until the converging time remains above a second threshold higher than the first threshold for a defined number of contiguous sampling points of the sequence. A method, vehicle, and apparatus are described.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: July 31, 2018
    Assignee: Nissan North America, Inc.
    Inventors: Andrew Damiani, Roy Goudy, Neal Probert
  • Patent number: 10031211
    Abstract: A radar apparatus which includes a transmitting unit, a receiving unit, an I signal generating circuit, a Q signal generating circuit, a peak detecting circuit, a target detecting unit, and a distortion judging unit. The transmitting unit transmits a radar wave which is frequency-modulated along a time axis in a specified cycle, and the receiving unit receives an incoming wave which is a reflected wave of the radar wave transmitted by the transmitting means and amplifies it in an amplifier. The I signal generating circuit generates an I signal which is a real number component of a beat signal by mixing the incoming wave received and amplified by the receiving means with the radar wave transmitted by the transmitting unit. The Q signal generating circuit generates a Q signal which is an imaginary number component of a beat signal by mixing the incoming wave received and amplified by the receiving unit with the radar wave transmitted by the transmitting unit with a phase being shifted by ?/2 [rad].
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: July 24, 2018
    Assignee: DENSO CORPORATION
    Inventor: Kunihiko Ookawa
  • Patent number: 10012726
    Abstract: Method for determining distances and relative velocities of simultaneously located objects using an FMCW radar, in which the frequency of a transmission signal is modulated in the form of periodically recurring ramps, the transmission signal is mixed with a received signal to form an intermediate frequency signal and, for determining the distance and/or the relative velocity of the objects, the change in the phase of the intermediate frequency signal is evaluated from one ramp to the next characterized in that the modulation pattern includes at least two ramps, which differ only by a fixed frequency offset and follow one another in a certain time interval, and an unambiguous approximate value is calculated for the object distance on the basis of the phase difference ?1??2 of the intermediate frequency signals for these two ramps.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 3, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Michael Schoor, Christoph Schroeder
  • Patent number: 10006991
    Abstract: A method and system for estimating velocity of an aircraft is provided. The method comprises transmitting a beam toward a surface from the aircraft using a Doppler beam sharpened radar altimeter, receiving a plurality of reflected signals that correspond to portions of the transmitted beam that are reflected by the surface, and forming a plurality of Doppler beams by filtering the received signals. A complex-valued array of range bin is computed with respect to frequency of the Doppler beams from at least one antenna aperture of the radar altimeter, and a range for each of the Doppler beams is estimated. A velocity vector magnitude for the aircraft is estimated by a curve fit of the range with respect to the frequency of the Doppler beams.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: June 26, 2018
    Assignee: Honeywell International Inc.
    Inventors: Benjamin J. Winstead, Adam Moya
  • Patent number: 9971022
    Abstract: A radar apparatus is installed in a vehicle and receives a reflection wave from a target to derive information about the target. The radar apparatus includes a signal processor to extract a peak signal that is obtained from a difference frequency between a transmission signal whose frequency changes in a prescribed cycle and a reception signal representing reception of a reflection wave that is generated from a transmission wave of the transmission signal reflected by the target, in each of an up period in which the frequency of the transmission signal increases and a down period in which the frequency decreases; and to determine whether a target information derivation environment is good or bad based on a number of the peak signals each of which corresponds to a static object having a plurality of angle information.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: May 15, 2018
    Assignee: FUJITSU TEN LIMITED
    Inventors: Daisuke Nishio, Masatoshi Aoki
  • Patent number: 9952314
    Abstract: Disclosed herein are a method and device for sensing a road environment based on a frequency modulated continuous wave (FMCW) radar. A method for detecting a road environment based on the FMCW radar includes the steps of: the FMCW radar performing a first scan to acquire a first frequency spectrum of beat signals, and shifting the first frequency spectrum based on first velocity information of a vehicle on performing the first scan; the FMCW radar performing a second scan to acquire a second frequency spectrum of beat signals, and shifting the second frequency spectrum based on second velocity information of the vehicle on performing the second scan; acquiring correlation information between the shifted first frequency spectrum and the shifted second frequency spectrum; and comparing the correlation information with a set threshold value and detecting the road environment.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: April 24, 2018
    Assignee: MANDO CORPORATION
    Inventors: Jae Eun Lee, Hae Seung Lim, Seong Hee Jeong
  • Patent number: 9912387
    Abstract: A distributed antenna system includes a plurality of head-end units for each receiving mobile communication signals from at least one corresponding base station, a hub unit communicatively coupled to the plurality of head-end units, and a plurality of remote units communicatively coupled to the hub unit, wherein the hub unit configured to distribute the mobile communication signals received from each of the plurality of head-end units to the plurality of remote units, wherein each of the plurality of remote units is remotely disposed to transmit the distributed mobile communication signals to a terminal in service coverage, and wherein the hub unit includes a mixing processing stage configured to perform digital mixing processing on the mobile communication signals respectively received from the plurality of head-end units, and a crest factor reduction (CFR) module disposed posterior to the mixing processing stage, with respect to a signal transmission direction.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 6, 2018
    Assignee: SOLiD, INC.
    Inventors: Hyoungho Kim, Doyoon Kim, Kwangnam Seo
  • Patent number: 9891315
    Abstract: The invention provides a compact, high-frequency, transmit and receive millimeter-wave radar sensor device, system, and method of use. The sensor can operate at a variety of distances, speeds, and resolutions depending on the hardware components selected in a given implementation. The hardware and software architecture is generic and can be tailored to required applications.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: February 13, 2018
    Assignee: Northeastern University
    Inventors: Dan Busuioc, Ming Wang, Ralf Birken
  • Patent number: 9870620
    Abstract: An image analyzer includes processing circuitry that receives at least one image having a first set of bins and a second set of bins, shifts the first or second set of bins by a number of bins associated with a motion hypothesis to achieve sets of aligned bins, determines a product for each set of aligned bins, compares the products to a product threshold, and identifies an object based on the products that exceed the product threshold.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: January 16, 2018
    Assignee: The Johns Hopkins University
    Inventors: Richard E. Pavek, Alexander S. Hughes
  • Patent number: 9864053
    Abstract: Systems and methods for using velocity measurements to adjust Doppler filter bandwidth are provided herein. In certain embodiments, a method for adjusting bandwidth for at least one Doppler filter in a Doppler beam sharpened radar altimeter comprises receiving a velocity measurement; adjusting the bandwidth of the at least one Doppler filter based on the velocity measurement; and transmitting a radar beam, wherein the radar beam is aimed toward a surface. The method further comprises receiving at least one reflected signal, wherein the at least one reflected signal is a reflection of the radar beam being reflected off of at least one portion of the surface; and filtering the at least one reflected signal with the at least one Doppler filter to form at least one Doppler beam.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: January 9, 2018
    Assignee: Honeywell International Inc.
    Inventors: Benjamin J. Winstead, Timothy J. Reilly
  • Patent number: 9851470
    Abstract: A single beam frequency modulated continuous wave radar for clear air scatter (CAS) detection and method of monitoring clear air scatterers are provided. CAS monitoring capabilities, including the ability to estimate wind velocity and direction, are obtained using data from a single defined width beam of energy that instead of being averaged is sampled at discrete time steps over a range of altitudes.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: December 26, 2017
    Assignee: LogLinear Group, LLC
    Inventors: Mark Henderson, Marshall Bradley
  • Patent number: 9836933
    Abstract: A method of operating a data processing apparatus is provided. The method includes receiving video data; receiving a virtual test signal representative of a location of a virtual object; setting data representing the horizontal and vertical size of the virtual object dependent upon the location of the virtual object; overlaying the received video data with an image of the virtual object at locations determined from the virtual test signal to generate virtual test video data; and analyzing the virtual test video data and generating an alarm signal based on an output signal generated by said analysis.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: December 5, 2017
    Assignee: IPSOTEK LTD.
    Inventors: Boghos Boghossian, James Black
  • Patent number: 9829566
    Abstract: Radar detection of an object is achieved by identifying a first range associated with a possible object based on a first return from a first radar transmission having a first chirp rate, and identifying a second range associated with the possible object based on a second return from a second radar transmission having a second chirp rate that differs from the first chirp rate. The first and second ranges are evaluated together to determine whether the possible object is a true object.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: November 28, 2017
    Assignee: Texas Instruments Incorporated
    Inventors: Sandeep Rao, Karthik Subburaj
  • Patent number: 9784829
    Abstract: A method and system are disclosed for tracking a remote vehicle which is driving in a lateral position relative to a host vehicle. Target data from two radar sensors are provided to an object detection fusion system. Wheels on the remote vehicle are identified as clusters of radar points with essentially the same location but substantially varying Doppler range rate values. If both wheels on the near side of the remote vehicle can be identified, a fusion calculation is performed using the wheel locations measured by both radar sensors, yielding an accurate estimate of the position, orientation and velocity of the remote vehicle. The position, orientation and velocity of the remote vehicle are used to trigger warnings or evasive maneuvers in a Lateral Collision Prevention (LCP) system. Radar sensor alignment can also be calibrated with an additional fusion calculation based on the same wheel measurement data.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: October 10, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Shuqing Zeng, Xiaofeng Frank Song
  • Patent number: 9778362
    Abstract: The general field of the invention is that of Doppler lidars intended to measure the speed of a target. The lidar according to the invention comprises: First means for modulating the optical frequency of the transmission signal, said frequency being the sum of a constant frequency and of a variable frequency of determined amplitude modulated by a periodic temporal function; Second means for computing the spectrum of the measured heterodyne signal and for creating two measurement spectra obtained by shifting the spectrum of the heterodyne signal by a positive and negative frequency value, said realignment frequency equal to the difference between the instantaneous frequency of the transmission signal and the frequency of a signal transmitted at a time shifted by the round-trip travel time between the lidar and the target; Third means for comparing the two measurement spectra, the difference in amplitude between the two spectra at the Doppler frequency determining the direction of the speed of the target.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: October 3, 2017
    Assignee: Thales
    Inventors: Philippe Rondeau, Jean-Pierre Schlotterbeck, Xavier Lacondemine
  • Patent number: 9776629
    Abstract: The invention relates to a method for operating an environment-monitoring system for a motor vehicle, by means of which the positions of objects in the environment laterally adjacent to, in front of, and behind the vehicle are determined. According to the invention, in order to improve the accuracy of the environment-monitoring system, the motion path is determined for a stationary object which the vehicle passes, and said motion path is used to determine the angular deviation with which the motion path determined for the stationary object deviates from the motion path of the vehicle.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: October 3, 2017
    Assignee: Lucas Automotive GmbH
    Inventor: Sascha Heinrichs-Bartscher
  • Patent number: 9753120
    Abstract: The disclosure provides a radar apparatus fur estimating a distance of the one or more obstacles in a range of interest. The radar apparatus includes a local oscillator that generates a first ramp segment having a first start frequency. A frequency shifter receives the first ramp segment and generates a transmit signal and a mixer signal. The transmit signal is scattered by a one or more obstacles in the range of interest to generate the scattered signal. A mixer mixes the scattered signal and the mixer signal to generate a non-zero IF signal which is filtered to generate a filtered non-zero IF signal. An ADC (analog to digital converter) samples the filtered non-zero IF signal to generate a valid data. A DSP (digital signal processor) processes the valid data for estimating the distance of the one or more obstacles.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: September 5, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Karthik Ramasubramanian, Sandeep Rao
  • Patent number: 9701305
    Abstract: A system and method of retrieving a vehicle includes generating a path from a final destination to a starting position, receiving a command to retrieve the vehicle, and autonomously operating the vehicle along the path from the final vehicle destination to the starting vehicle position.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: July 11, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Brian D. Paul, Walter M. Lazar, II, Andrew Wassef