Doppler Patents (Class 342/418)
  • Patent number: 10241187
    Abstract: A sensor includes a reception antenna, a parasitic antenna terminating in a variable load, a controller, a transmitter transmitting a transmission signal, a receiver, a memory, and a processor. The controller sets an impedance value of the variable load. The receiver receives a first signal formed of signals received by the antennas and derived from the transmission signal, and the signal received by the parasitic antenna corresponding to the impedance value. The memory stores a first signal strength value of the first signal corresponding to the impedance value. The processor sets candidates of a complex propagation channel, calculates second signal strength values of a second signal respectively corresponding to the candidates, estimates a target complex propagation channel by selecting a candidate corresponding to a minimum difference among differences between the first signal strength value and the second signal strength values, and estimates a direction of arrival of the first signal.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: March 26, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naoki Honma, Takeshi Nakayama, Takashi Morimoto
  • Patent number: 10168425
    Abstract: Methods and systems are provided for a radar system. The radar system comprises a plurality of distributed radar units and a centralized radar processing unit. The plurality of distributed radar units are each configured to obtain respective radar signals. Each of the plurality of distributed radar units are disposed at a different respective location of a mobile platform. The centralized radar processing unit is disposed within the mobile platform, coupled to each of the plurality of distributed radar units, and configured to directly process the radar signals from each of the plurality of distributed radar units.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: January 1, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Igal Bilik, Ran Y. Gazit
  • Patent number: 10097388
    Abstract: A method may include receiving a signal. The signal may encode a data packet. The method may include further sampling the signal to generate sampled values, and generating a slice record comprising a plurality of slices from the sampled values by correlating the sampled values with first and second reference templates. The first reference template may include a first reference function, and the second reference template may include a second reference function in quadrature with the first reference function. The method may further include cross-correlating the slice record with a stored template to generate cross-correlation terms, and determining when a magnitude of the cross-correlation terms exceeds a predetermined threshold for a width of the stored template.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: October 9, 2018
    Assignee: PROTEUS DIGITAL HEALTH, INC.
    Inventors: Robert Fleming, Cherie Kushner, William H. McAllister, Mark Zdeblick
  • Patent number: 10006999
    Abstract: A method in a driver assistance system of a vehicle for detecting an object in the surroundings of the vehicle. The method has the following steps: emission of at least one measuring pulse by a transmitter; reception of a reflection of the measuring pulse by at least one receiver; determination of a Doppler shift between the emitted measuring pulse and the received reflection in an analysis unit; and determination of a direction toward the object based on the determined Doppler shift.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: June 26, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventor: Matthias Karl
  • Patent number: 9882668
    Abstract: Detection of OFDM signals leaking from an HFC network with CCAP architecture is presented. Leak detection includes creating signatures of the OFDM signals and using them in an adaptive coherent cross-correlation processing method. The signature is created at a server and then transmitted to a field leakage detector via a wireless network. The server constructs signatures based on modulation and other parameters of the OFDM signal. The detector adaptively selects valid signatures depending on the location of the detector. A cross-correlation receiver samples the OFDM leakage signal in synchronism with a GPS clock and an OFDM master clock at a CMTS. Capture of the OFDM leakage signal in the detector is synchronized with the symbol rate and timestamp of the OFMD signal to achieve time delay measurements of the leak signal at different locations of the detector. Then, the leak is located using known TDOA or network database methods.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: January 30, 2018
    Assignee: ARCOM DIGITAL, LLC
    Inventor: Victor M. Zinevich
  • Patent number: 9868044
    Abstract: Systems and methods for ball spin rate measurement are described. Some embodiments provide a method whereby a phase-demodulated difference signal of a projectile in flight is received, such as from a Doppler radar system. A first periodic component of the phase-demodulated signal is detected, the first periodic component having a plurality of bipolar pulses, with each of the pulses having a first portion during which an apparent speed of the projectile is greater than a nominal speed of the projectile, and each of the pulses having a second portion during which the apparent speed of the projectile is less that the nominal speed of the projectile. A period of the first periodic component is detected, and the spin rate of the projectile in flight is determined based on the period of the first periodic component.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: January 16, 2018
    Assignee: EDH US LLC
    Inventors: Henri Johnson, Thomas Johnson, Robert William Rust
  • Patent number: 9854563
    Abstract: Technologies are generally described for a bandwidth control scheme. In some examples, a transmitter device configured to transmit information via a wireless connection may include a baseband signal processor configured to process the information to generate a baseband signal with a baseband bandwidth; a modulator configured to modulate a radio frequency (RF) signal with an RF bandwidth based on the baseband signal; and a controller configured to adjust at least one of the baseband bandwidth and the RF bandwidth based on a movement of the transmitter device relative to a position of a receiver device configured to receive the RF signal.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: December 26, 2017
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Hyoung-Gon Lee
  • Patent number: 9787511
    Abstract: A method may comprise receiving and sampling a signal. The signal may encode a data packet. A slice may be generated and stored comprising a pair of values for each of a selected number of samples of the signal representing a correlation of the signal to reference functions in the receiver. The presence of the data packet may then be detected and the detected packet decoded from the stored slices. The generating and storing slices may be carried out as the received signal is sampled. The sampled values of the signal may be discarded as the slices are generated and stored. The slice representation of the signal can be manipulated to generate filters with flexible bandwidth and center frequency.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: October 10, 2017
    Assignee: PROTEUS DIGITAL HEALTH, INC.
    Inventors: Robert Fleming, Cherie Kushner, William H. McAllister, Mark Zdeblick
  • Patent number: 9704122
    Abstract: A computationally implemented system and method that is designed to, but is not limited to: electronically receiving monitoring information related to one or more farming related production factors involved with farming related production of one or more ingestible materials; and electronically associating at least a portion of said monitoring information one or more farming related production factors involved with farming related production of one or more ingestible materials with one or more identifiers accessible through one or more tracers, said one or more tracers logged as being at least momentarily in physical proximity with said one or more ingestible materials. In addition to the foregoing, other method aspects are described in the claims, drawings, and text forming a part of the present disclosure.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: July 11, 2017
    Assignee: Elwha LLC
    Inventors: Edward K. Y. Jung, Royce A. Levien, Mark A. Malamud
  • Patent number: 9270503
    Abstract: A method may comprise receiving and sampling a signal. The signal may encode a data packet. A slice may be generated and stored comprising a pair of values for each of a selected number of samples of the signal representing a correlation of the signal to reference functions in the receiver. The presence of the data packet may then be detected and the detected packet decoded from the stored slices. The generating and storing slices may be carried out as the received signal is sampled. The sampled values of the signal may be discarded as the slices are generated and stored. The slice representation of the signal can be manipulated to generate filters with flexible bandwidth and center frequency.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: February 23, 2016
    Assignee: Proteus Digital Health, Inc.
    Inventors: Robert Fleming, Cherie Kushner, William H. McAllister, Mark Zdeblick
  • Patent number: 9270389
    Abstract: A measuring method for analyzing the propagation of electromagnetic navigation signals, wherein at least one representative transmitting unit, having a chronological signal feed scheme unambiguously assigned to the navigation signal, is assigned to each of the navigation signals. The representative transmitting units are at least intermittently operated offset in time. A characteristic transmission-free leader pause duration and transmission-free trailer pause duration or a characteristic transmitting duration is assigned to each representative transmitting unit. An analysis unit is coupled to a receiving unit and a time-dependent amplitude detection is carried out, wherein the time curve of the received amplitude values is analyzed by the analysis unit to assign the representative transmitting unit to timeslots of the received amplitude values.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: February 23, 2016
    Assignee: TECHNISCHE UNIVERSITAT BRAUNSCHWEIG
    Inventors: Robert Geise, Achim Enders
  • Patent number: 9267959
    Abstract: Measurement of bladed rotors and, more particularly, speed measurement of bladed rotors in a turbine engine using microwave probes is described. In one embodiment, an apparatus for measuring bladed includes a microwave sensor that radiates a microwave signal toward a bladed rotor and receives a reflected microwave signal from the bladed rotor, a radio frequency module that generates the microwave signal radiated by the microwave sensor and down-converts the reflected microwave signal into a down-converted signal, and a main processing module configured to generate an output pulse train signal representative of a speed of the bladed rotor based on the down-converted signal. In another embodiment, a method for measuring bladed rotors is described including radiating a microwave signal, receiving a reflected microwave signal, down-converting the reflected microwave signal, and generating an output pulse train signal representative of a speed of a bladed rotor based on the down-converted signal.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: February 23, 2016
    Assignee: Meggitt SA
    Inventors: Olivier Hochreutiner, Jonathan Geisheimer, Thomas Holst, Sylvain Queloz, David Kwapisz, Rachid Naid-Abdellah
  • Patent number: 9216739
    Abstract: A vehicle travel control apparatus that can stop a subject vehicle at an optimum position, and at a subsequent restart time, suitably avoid an obstacle without imposing a burden on a driver is provided.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: December 22, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Takeo Shibata
  • Patent number: 9075651
    Abstract: Efficient computation of complex long multiplication results and an efficient calculation of a covariance matrix are described. A parallel array VLIW digital signal processor is employed along with specialized complex long multiplication instructions and communication operations between the processing elements which are overlapped with computation to provide very high performance operation. Successive iterations of a loop of tightly packed VLIWs may be used allowing the complex multiplication pipeline hardware to be efficiently used.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: July 7, 2015
    Assignee: Altera Corporation
    Inventors: Gerald George Pechanek, Ricardo Rodriguez, Matthew Plonski, David Strube, Kevin Coopman
  • Patent number: 8847587
    Abstract: A magnetic field generator includes a substrate, a main generator coil, at least one field sensor, at least one shim coil, a driver circuit and a correction circuit. The main generator coil, the field sensor, and the shim coil are all disposed on the substrate. The driver circuit is coupled to drive the main generator coil with a driving current at a selected frequency. The correction circuit is coupled to receive a signal at the selected frequency from the at least one field sensor and, in response to deviations in the signal from a predefined baseline, to drive the at least one shim coil with a driving current having an amplitude configured to return the signal to the baseline.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: September 30, 2014
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Assaf Govari, Andres Claudio Altmann, Yaron Ephrath
  • Publication number: 20140285379
    Abstract: According to one embodiment, a monitoring device includes a monitoring antenna, a frequency converter, a filter, a detector, and an azimuth detector. The monitoring antenna receives a carrier wave, an upper sideband wave, and a lower sideband wave as a VOR signal. The frequency converter converts a frequency band of the VOR signal into an IF band. The filter includes passband. The passband removes a component of the lower sideband wave in the VOR signal. The detector detects a component of the carrier wave, and a component of the upper sideband wave from the signal output from the filter. The azimuth detector detects an azimuth based on the detected carrier wave component, and the detected upper sideband wave component.
    Type: Application
    Filed: January 6, 2014
    Publication date: September 25, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Yoshio KAWAGUCHI
  • Patent number: 8774717
    Abstract: A Master Antenna Controller System is provided. In one example, the Master Antenna Controller System comprises a handheld wireless device and a RET Master. The handheld wireless device may comprise an Android OS or iOS based smartphone or tablet that includes Wi-Fi capabilities communications capabilities. The RET Master may provide full RET control based on the AISG 1.1 and 2.0 standards and communicate with the handheld wireless device via a wireless access point, such as a Wi-Fi server. The combination may be configured to provide extensive, screen-guided, intuitive RET diagnostics functionality. The RET Master itself may also include multiple different pre-defined tests (e.g. test one actuator, test one RET cable, test AISG signal from TMA) and also some standard electrical tests, e.g. measuring voltage, current etc. Additional higher-level functions may be provided on an Application on the handheld wireless device and communicated to the RET Master wirelessly or by USB connection.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: July 8, 2014
    Assignee: Andrew LLC
    Inventors: Matthew D. Ferris, Elmer O. Freeman, Bobby W. Webb, Holger Raeder
  • Patent number: 8766827
    Abstract: Parallel compression is performed on an input data stream by processing circuitry. The processing circuitry includes hashing circuitry, match engines, pipeline circuitry and a match selector. The hashing circuitry identifies multiple locations in one or more history buffers for searching for a target data in the input data stream. The match engines perform multiple searches in parallel for the target data in the one or more history buffers. The pipeline circuitry performs pipelined searches for multiple sequential target data in the input data stream in consecutive clock cycles. Then the match selector selects a result from the multiple searches and pipelined searches to compress the input data stream.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: July 1, 2014
    Assignee: Intel Corporation
    Inventors: Andrew Milne, Sailesh Bissessur, Quinn W. Merrell, Lokpraveen B. Mosur
  • Patent number: 8552908
    Abstract: A high fidelity simulation of Doppler that may exactly replicate the phenomenology of the physical world. Compute the linear (Line of sight) kinematics (Slant Range, Radial Velocity, and Radial Acceleration) for each of a multiplicity of emitter-receiver pairs in accordance with exact 3D vector mathematics. Smoothly interpolate the linear kinematic parameters to produce accurate instantaneous values of these parameters at sample rates sufficient to produce negligible error effects in the presence of realistic aircraft maneuvers. Calculate the Doppler frequency, in accordance with well known physics, from the emitter carrier wavelength and a high sample rate. Calculate the Doppler effect as a differential phase (Doppler frequency×sample time) and apply the effect as incremental phase shifts to the carrier signal.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: October 8, 2013
    Assignee: AAI Corporation
    Inventors: James J. Jaklitsch, Hariklia Karagiannis
  • Patent number: 8355473
    Abstract: Certain embodiments of the present disclosure propose methods and systems for classifying the Doppler spread based on the output of the frequency-tracking loop (FTL) discriminator in WiMAX systems to improve the performance of the channel estimation. The Doppler spread may be classified as low, medium or high based on the statistics of the output of the discriminator in the fine-tracking mode.
    Type: Grant
    Filed: April 19, 2009
    Date of Patent: January 15, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Junqiang Li, Je Woo Kim, Madihally J. Narasimha
  • Publication number: 20130009822
    Abstract: A high fidelity simulation of Doppler that may exactly replicate the phenomenology of the physical world. Compute the linear (Line of sight) kinematics (Slant Range, Radial Velocity, and Radial Acceleration) for each of a multiplicity of emitter-receiver pairs in accordance with exact 3D vector mathematics. Smoothly interpolate the linear kinematic parameters to produce accurate instantaneous values of these parameters at sample rates sufficient to produce negligible error effects in the presence of realistic aircraft maneuvers. Calculate the Doppler frequency, in accordance with well known physics, from the emitter carrier wavelength and a high sample rate. Calculate the Doppler effect as a differential phase (Doppler frequency×sample time) and apply the effect as incremental phase shifts to the carrier signal.
    Type: Application
    Filed: July 5, 2011
    Publication date: January 10, 2013
    Applicant: AAI Corporation
    Inventors: James J. Jaklitsch, Hariklia Karagiannis
  • Patent number: 8340588
    Abstract: A system for estimating parameters of an incoming signal is provided. At least one antenna is coupled to at least one suitable receiver. The antenna(s) are spatially translated in an arbitrary trajectory. As the antenna(s) is being spatially translated, a data processing means samples the incoming signal at set intervals based on a clock signal provided by a system clock. By sampling the incoming signal at different times at different spatial locations on the arbitrary trajectory, the system acts as a synthetic antenna array. The different samplings of the incoming signal at different times and positions provide signal diversity gain as well as different readings which can be used to estimate and/or calculate various parameters of the incoming signal. The different samplings can be used to detect the incoming signal, estimate its angle of arrival, estimate its time of arrival, as well as other parameters.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: December 25, 2012
    Assignee: Her Majesty the Queen in right of Canada as Represented by the Minister of National Defence
    Inventors: John Nielsen, Gerard Lachapelle, Ali Broumandan
  • Patent number: 8326316
    Abstract: A portable wireless terminal and a moving velocity detecting method for the portable wireless terminal capable of detecting a moving velocity with high accuracy without increasing power consumption and terminal cost are provided. At the start of a communication, GPS reception-related circuits 32 and 33 are turned on, an initial position of a portable wireless terminal 10 is detected, a RAKE receiver 24 and a synchronous detector 25 measure Doppler shift amounts of down signals at a known frequency received from a plurality of base stations, respectively, and a CPU 41 calculates relative velocities of the portable wireless terminal 10 to the respective base stations and obtains a current moving velocity of the portable wireless terminal 10 from positions of the base stations, the initial position, and the relative velocities.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: December 4, 2012
    Assignee: NEC Corporation
    Inventor: Kazuo Ogoro
  • Patent number: 8260324
    Abstract: A system for establishing a wireless link from a wireless communication device (WCD) to at least one target device. The process of both identifying the target device and establishing a link to this device may incorporate the orientation and/or movement of the WCD into the procedure in lieu of the extensive use of traditional menu interfaces. A WCD may interpret a combination of orientation and/or movement as an approximate target device location that may be utilized to narrow the total population of all located devices into a subset containing those devices located within of near the approximate target device location. The subset of devices may be formulated and displayed as potential target devices for selection by a user. If any of the potential target devices are known by the WCD, a link may be established automatically.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: September 4, 2012
    Assignee: Nokia Corporation
    Inventors: Joni Jorma Marius Jantunen, Kimmo Heikki Juhana Kalliola, Antti Paavo Tapani Kainulainen
  • Publication number: 20120098704
    Abstract: Methods and systems are provided herein for signal source tracking. A signal emitted over time from a moving source is a collection of small sub-signals that were emitted by the source at different positions along its path. If the source is traveling at a slower speed than the signal, the sub-signals will arrive at a given sensor in the same order that they were released. By identifying the locations and times of the releases of several of these sub-signals, the path and velocity of the moving source can be estimated.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 26, 2012
    Inventors: Kenneth M. Arnoult, JR., Curt A. L. Szuberla, John V. Olson
  • Patent number: 8050691
    Abstract: The present invention relates to a method and an arrangement in a mobile telecommunication network for detection of a UE transmitted signal. The arrangement comprises means for detecting the signal during the time ttot, wherein said means comprises a correlator adapted for combined coherent and non-coherent correlation, wherein the length of the coherent correlation interval is L signal samples, the number of coherent correlation intervals is M and the coherent correlation results in a coherent correlation result for each of the coherent detection intervals M, and means for adding the coherent correlation results non-coherently. Further, the arrangement comprises means for selecting one of the length L of coherent detection interval and the total detection interval ttot based on at least one of the parameters cell size, UE speed and acceleration, number of participating Location Measurements Units and a desired total false alarm rate.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: November 1, 2011
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Ari Kangas
  • Patent number: 7995682
    Abstract: A method and apparatus for estimating a satellite signal parameter in a satellite positioning system receiver is described. In an example, a plurality of correlation results between a satellite signal and a reference signal is generated and stored in a memory. At least one satellite signal parameter is estimated from the plurality of correlation results using a co-processor integrated within the satellite positioning system receiver. As the coprocessor estimates the parameter, new correlation results are added to the memory. The at least one satellite signal parameter is then provided to the processor.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: August 9, 2011
    Assignee: Broadcom Corporation
    Inventors: Charles Abraham, Emre Tapucu
  • Patent number: 7978137
    Abstract: A system for enhancing the performance of a wireless communication device (WCD) while executing a direction of arrival (DoA) estimation. The performance may be improved through device management, and may include the collection of information from one or more sensors installed within the WCD. The sensor information may initially be used to determine an appropriate configuration for the device. Further, the sensor information may also be used to affect the behavior of the device while performing the DoA estimation.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: July 12, 2011
    Assignee: Nokia Corporation
    Inventors: Kimmo Kalliola, Hannu Kauppinen, Joni Jantunen, Antti Kainulainen, Vuokko Nurmela
  • Publication number: 20110057839
    Abstract: Using in-phase and quadrature components of a received signal, spatial and temporal information is utilized to generate a maximum likelihood coefficient from the measured data to geolocate an emitter of unknown frequency. In one embodiment an iso-Doppler contour is generated having regions of high correlation to estimate location in which the maximum likelihood calculation uses two factors, one derived from a single aperture and one derived from bearing estimates, with the region of highest correlation corresponding to emitter location. Hypothesized in-phase and quadrature signals corresponding to an emitter location describe what the signals received at the aperture should be if the emitter is of a predetermined frequency and at a predetermined location, with these estimates used in the maximum likelihood algorithm.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 10, 2011
    Inventors: Arnold D. Seifer, Donald B. Spencer
  • Patent number: 7768963
    Abstract: Systems and methods of improving sampling of WLAN packet information to improve estimates of Doppler frequency of a WLAN positioning device. A device estimates the position of itself. The device includes a WLAN radio module for receiving WLAN signals transmitted by WLAN APs in range of said device, extraction logic for extracting information from said received WLAN signals to identify the WLAN APs, and logic to cooperate with a WLAN-based positioning system to estimate the position of the device based at least in part on the extracted information identifying the WLAN APs in the range of said device. The WLAN radio module includes logic for measuring multiple received signal strength indicator (RSSI) values for sufficiently long WLAN packets to increase the sampled rate of RSSI of WLAN packets from WLAN APs and to thereby improve an estimate of the Doppler frequency of said device.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: August 3, 2010
    Assignee: Skyhook Wireless, Inc.
    Inventor: Farshid Alizadeh-Shabdiz
  • Patent number: 7719469
    Abstract: A position determination method including a step of transmitting a periodic signal having a carrier frequency, a step of sequentially receiving the periodic signal having the carrier frequency at various locations using at least one antenna, and a step of determining a first coordinate of the object location on the basis of a zero crossing of a Doppler frequency response which may be associated with the first coordinate of the object location, the first coordinate of the object location corresponding to a coordinate of that location of the at least one antenna which it has when receiving the periodic signal at the zero crossing in relation to the object location.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: May 18, 2010
    Assignee: Cairos Technologies AG
    Inventors: Walter Englert, Tilman Bucher
  • Patent number: 7653347
    Abstract: A Doppler compensation method is used for radio transmission between a mobile body possibly but not exclusively a train and some base station, both mobile body and base station comprise respectively a transceiver connected to an antenna for the radio transmission. The method comprises the step of determining the direction of motion of the mobile body with respect to the active base station i.e. the base station to which a radio transmission link is just built. The method is then followed by the step to apply a constant Doppler compensation corresponding to the cancellation of the Doppler effect for a mobile body moving in the same direction at predefined limiting speed of motion (vlimit) at which a quality threshold is reached with the used radio transmission technology in the case without a Doppler compensation.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 26, 2010
    Assignee: Alcatel Lucent
    Inventors: Ralf Klotsche, Klaus Wünstel, Thomas-Rolf Banniza
  • Patent number: 7548202
    Abstract: A radio direction finding antenna is disclosed. A dielectric material is configured to rotate about an axis of rotation. The dielectric material has a first conductive surface. A radiating element or array of radiating elements are disposed within the dielectric material and are electrically isolated from the first conductive surface. The radiating element or array of radiating elements are positioned a distance away from the axis of rotation and are configured to be resonant at a predetermined frequency in the case of a single radiating element or various frequencies in the case of an array of radiating elements. Rotation of the dielectric material and radiating element or array of elements about the axis of rotation causes a Doppler effect in signals received by the radiating element or array of elements. An artillery fuse incorporating the radio direction finding antenna is also disclosed.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: June 16, 2009
    Assignee: Rockwell Collins, Inc.
    Inventor: William C. Jennings
  • Patent number: 7548203
    Abstract: A system for enhancing the performance of a wireless communication device (WCD) while executing a direction of arrival (DoA) estimation. The performance may be improved through device management, and may include the collection of information from one or more sensors installed within the WCD. The sensor information may initially be used to determine an appropriate configuration for the device. Further, the sensor information may also be used to affect the behavior of the device while performing the DoA estimation.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: June 16, 2009
    Assignee: Nokia Corporation
    Inventors: Kimmo Kalliola, Hannu Kauppinen, Joni Jantunen, Antti Kainulainen, Vuokko Nurmela
  • Patent number: 7548201
    Abstract: Provided are a system and method for modifying detected radio frequency (RF) leak information in a cable television system. In one example, the method includes identifying a leak location and a leak magnitude in the cable television system using a detection system. A predefined range value may be automatically identified based on the leak location, where the range value is used to define an approximate distance between the cable television system and the detection system. The leak magnitude may then be modified based on the range value.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: June 16, 2009
    Assignee: Cable Leakage Technologies, Inc.
    Inventors: Kenneth J. Eckenroth, Michael E. Ostteen
  • Patent number: 7495611
    Abstract: A method for determining the direction of an incoming signal is provided in which each of a plurality of receivers arranged in a linear array is sampled in sequence to simulate a single receiver moving along an aperture defined by the linear array at a simulated speed. This generates a simulated time series data from which a simulated Doppler shift in the incident angle is measured. The simulated Doppler shift is used to determine the incident angle between the incident signal and the linear array of receivers. By adjusting the simulated speed to eliminate artifacts in the power spectral density of the data obtained from the receivers, the incident angle can be obtain from the expression of the simulated Doppler shift.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: February 24, 2009
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Anthony A. Ruffa
  • Publication number: 20090009382
    Abstract: A method for determining the direction of an incoming signal is provided in which each of a plurality of receivers arranged in a linear array is sampled in sequence to simulate a single receiver moving along an aperture defined by the linear array at a simulated speed. This generates a simulated time series data from which a simulated Doppler shift in the incident angle is measured. The simulated Doppler shift is used to determine the incident angle between the incident signal and the linear array of receivers. By adjusting the simulated speed to eliminate artifacts in the power spectral density of the data obtained from the receivers, the incident angle can be obtain from the expression of the simulated Doppler shift.
    Type: Application
    Filed: July 3, 2007
    Publication date: January 8, 2009
    Inventor: ANTHONY A. RUFFA
  • Publication number: 20080211719
    Abstract: Embodiments of the invention exploit cyclostationarity of linearly modulated signals, transmitted through fading channels, to provide robust blind and data-aided mobile speed estimators. Embodiments of the invention utilize at least two methods of cyclic-correlation- and cyclic-spectrum-based methods and extension to space-time speed estimation at the base station in macrocells. In comparison with background art methods, the new estimators of the embodiments of the invention can be used without any need for pilot tones, and are robust to additive stationary noise or interference of any color or distribution. In addition, embodiments of the invention can also be implemented blindly, which can increase the data throughput. Performance results of the estimators of the embodiments of the invention are illustrated via extensive Monte Carlo simulation results.
    Type: Application
    Filed: November 21, 2007
    Publication date: September 4, 2008
    Applicant: New Jersey Institute of Technology
    Inventors: Hong Zhang, Ali Abdi
  • Patent number: 7414581
    Abstract: A method for estimating signal/noise ratio is provided. The method comprises calculating a first signal/noise ratio (SNR) estimate using a technique with a first response time, calculating a second SNR estimate using a technique with a second, slower response time, and blending the first SNR estimate with the second SNR estimate.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: August 19, 2008
    Assignee: Honeywell International Inc.
    Inventor: Lawrence C. Vallot
  • Patent number: 7409226
    Abstract: A rotating antenna is used in a wireless system to impart a phase onto a received signal by electronically moving the effective receiving antenna location along a circular path such that the modulation phase angle indicates the bearing of the radio transmission and the gain of a signal transmitted by the antenna is increased in the direction of the received signal to enhance the link between transmitter and receiver. In order to simulate a rotating antenna, the antenna preferably comprises an antenna array having a plurality of antennae for use by one receiver. During reception of a signal from a remote transmitter, a scanner is adapted to scan through the plurality of antennae and in turn provide a signal received from each of the plurality of antennae to the receiver in the wireless system. The signal is modulated by virtue of the antenna rotation to include a Doppler frequency component.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: August 5, 2008
    Assignee: Lucent Technologies Inc.
    Inventor: Carl R. Stevenson
  • Patent number: 7365679
    Abstract: A positioning apparatus that measures a current position by using measurement basis codes carried on satellite waves from a plurality of positioning satellites includes: a first phase error information generating unit that generates first phase error information indicating an error of a first phase on the basis of a frequency difference between a first frequency which is an estimated value of a receiving frequency of the satellite wave and a second frequency which is a frequency corresponding to a maximum value of a correlation value under a condition of the estimated phase; a second phase information generating unit that generates second phase information indicating a second phase by correcting a first phase information on the basis of the first phase error information; and a positioning unit that measures the current position on the basis of the second phase information on at least three of the positioning satellites.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 29, 2008
    Assignee: Seiko Epson Corporation
    Inventor: Makoto Murakami
  • Publication number: 20080084351
    Abstract: A position determination method including a step of transmitting a periodic signal having a carrier frequency, a step of sequentially receiving the periodic signal having the carrier frequency at various locations using at least one antenna, and a step of determining a first coordinate of the object location on the basis of a zero crossing of a Doppler frequency response which may be associated with the first coordinate of the object location, the first coordinate of the object location corresponding to a coordinate of that location of the at least one antenna which it has when receiving the periodic signal at the zero crossing in relation to the object location.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 10, 2008
    Inventors: Walter Englert, Tilman Bucher
  • Publication number: 20080068265
    Abstract: A system for enhancing the performance of a wireless communication device (WCD) while executing a direction of arrival (DoA) estimation. The performance may be improved through device management, and may include the collection of information from one or more sensors installed within the WCD. The sensor information may initially be used to determine an appropriate configuration for the device. Further, the sensor information may also be used to affect the behavior of the device while performing the DoA estimation.
    Type: Application
    Filed: September 15, 2006
    Publication date: March 20, 2008
    Applicant: NOKIA CORPORATION
    Inventors: Kimmo KALLIOLA, Hannu KAUPPINEN, Joni JANTUNEN, Antti KAINULAINEN, Vuokko NURMELA
  • Patent number: 7109920
    Abstract: A system and method for determining a position of a moving platform are provided. The method includes transmitting a carrier signal from one of the moving platform and a stationary platform, receiving a received signal at the other of the moving and stationary platforms, deriving a frequency shift between the carrier signal and the received signal, and calculating the apparent closing velocity using the frequency shift and a frequency of the carrier signal.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: September 19, 2006
    Assignee: General Electric Company
    Inventors: David Michael Davenport, John Erik Hershey, Ralph Thomas Hoctor
  • Patent number: 7082155
    Abstract: A reception level measuring system in which a base station in a code division multiple access (CDMA) mobile communication system measures a reception level of a signal from a mobile station. The reception level measuring system has an approximate-line estimating device, a phase-rotation estimating device; a Doppler-frequency estimating device and a reception signal power estimating device. The approximate-line estimating device provides an approximate line by linearly approximating signal amplitudes of a demodulated data stream in I- and Q-channels from a reception signal, in a time interval which is set in accordance with an estimated Doppler frequency. The phase-rotation estimating device estimates an amount of phase rotation based on a gradient of the approximated line. The Doppler-frequency estimating device estimates the estimated Doppler frequency based on the amount of phase rotation; and the reception signal power estimating device estimates a reception signal power based on said approximate line.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: July 25, 2006
    Assignee: NEC Corporation
    Inventor: Tadashi Ogami
  • Patent number: 7054717
    Abstract: The present invention pertains to a robotic wash cell including a six-axis robotic arm and end effector equipped with nozzles that spray unheated, solvent free, pure water at high-pressure to clean or debur objects by maintaining the nozzles in close proximity and substantially normal to each surface being cleaned or edge being deburred. The robotic cell wash is particularly useful for cleaning contaminants such as oil and grease from items having more complex shapes. The six-axis robotic arm positions the nozzles and their sprays substantially normal to each surface being cleaned or deburred. The nozzles produce a multi-zone spray pattern with a continuous effective cleaning zone. A water recycling and pressurizing system collects the used water, separates out the oil and grease contaminants to a level of about 5 ppm, and pressurizes the pure water to about 3,000 psi for washing operations or about 6,000 psi for deburring operations.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: May 30, 2006
    Assignee: ABB Inc.
    Inventor: Stephen J. Laski
  • Publication number: 20040207555
    Abstract: Provided is a Doppler based automated direction finding system that detects radio frequency (RF) leaks in a cable television plant. During a ride-out, the system detects leaks and stores leak data, such as amplitude, location, and bearing. The stored data is uploaded to a computer that performs a leak analysis. The leak analysis isolates the leaks using Doppler-based bearing information and separates cable leaks from other RF sources, such as power sources and noise. Erroneous information that results from RF reflections (multi path) may be eliminated while processing the data using triangulation. After the leak analysis, the computer generates work orders and maps, makes the data available to users, and may also compile information and file reports based on the data.
    Type: Application
    Filed: April 16, 2003
    Publication date: October 21, 2004
    Applicant: Cable leakage Technologies, Inc.
    Inventors: Kenneth J. Eckenroth, Michael E. Ostteen
  • Patent number: 6806828
    Abstract: A method determines range from a moving platform to an emitter. The method receives a RF signal from the emitter; counts a number of phase reversals of the received RF signal during a period of time; measures a Doppler frequency during the period of time; and determines the range to the emitter based on both the number of counted phase reversals and the measured Doppler frequency.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: October 19, 2004
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Mitchell Joseph Sparrow, Joseph Cikalo
  • Publication number: 20040196184
    Abstract: A method and apparatus for determining the position and/or the orientation of a movable object using a Doppler shift of electromagnetic signals. The apparatus includes a transmitter for transmitting a periodic electromagnetic signal, a sensor mountable on the object for receiving the signal transmitted by the transmitter and a controller in communication with the transmitter and the sensor for determining the position and/or orientation of the sensor relative the transmitter.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 7, 2004
    Inventors: KEVIN HOLLANDER, JOHN STANDEVEN, JACK R. ENGSBERG
  • Patent number: 6801162
    Abstract: Provided is a Doppler based automated direction finding system that detects radio frequency (RF) leaks in a cable television plant. During a ride-out, the system detects leaks and stores leak data, such as amplitude, location, and bearing. The stored data is uploaded to a computer that performs a leak analysis. The leak analysis isolates the leaks using Doppler-based bearing information and separates cable leaks from other RF sources, such as power sources and noise. Erroneous information that results from RF reflections (multi path) may be eliminated while processing the data using triangulation. After the leak analysis, the computer generates work orders and maps, makes the data available to users, and may also compile information and file reports based on the data.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: October 5, 2004
    Assignee: Cable Leakage Technologies, Inc.
    Inventors: Kenneth J. Eckenroth, Michael E. Ostteen