Patents Examined by Chuong P Nguyen
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Patent number: 11874386Abstract: Systems and methods are provided for determining a polarization state of an input RF signal. Two distinct RF antennas receive the input RF signal and output a first antenna signal and a second antenna signal. Polarizsations of the first and second antenna signals are orthogonal to one another. The first antenna signal is converted to a first optical signal, and the first optical signal is passed through a first optical signal to introduce a first delay. The delayed first optical signal is converted to a first RF signal. An amplitude ratio and a phase difference are determined between the first RF signal and a second RF signal that is associated with the second antenna and optionally includes a second delay. A polarization angle or polarization type of the input RF signal is determined based on the amplitude ratio and phase difference of the first and second RF signals.Type: GrantFiled: July 1, 2021Date of Patent: January 16, 2024Assignee: Cobham Advanced Electronic Solutions, Inc.Inventor: Arnold N. Feineman
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Patent number: 11860283Abstract: An aircraft and non-transitory computer-readable medium for detecting the spoofing of a signal from a satellite in orbit. A receiver on the aircraft to receive an apparent satellite signal. A computer for determining at least two characteristic signatures of the signal including a power level, and indicating the apparent satellite signal is a spoofed satellite signal.Type: GrantFiled: September 16, 2022Date of Patent: January 2, 2024Assignee: GE Aviation Systems LimitedInventor: Stefan Alexander Schwindt
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Patent number: 11841442Abstract: An electromagnetic transmission carrying a bauded signal, such as a transmission from an orbiting satellite, is processed for Doppler shift analysis. The electromagnetic transmission is captured and a non-linear operation is performed to expose a cyclostationary feature of the captured transmission that defines a rate-line having a rate-line frequency that is related to the bauded signal and to the motion of the transmitter relative to the receiver. The rate-line frequency is tracked in time to generate data indicative of Doppler shift associated with the satellite. The data are then supplied to a tracking receiver.Type: GrantFiled: January 18, 2022Date of Patent: December 12, 2023Inventors: Bruce Cochran, Ronald McCallister, Steven Goisman
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Patent number: 11841448Abstract: The present invention belongs to the field of array signal processing and relates to a composite tensor beamforming method for an electromagnetic vector coprime planar array. The method includes: building an electromagnetic vector coprime planar array; performing tensor modeling of an electromagnetic vector coprime planar array receiving signal; designing a three-dimensional weight tensor corresponding to a coprime sparse uniform sub-planar array; forming a tensor beam power pattern of the coprime sparse uniform sub-planar array; and performing electromagnetic vector coprime planar array tensor beamforming based on coprime composite processing of the sparse uniform sub-planar array. Starting from the principles of receiving signal tensor spatial filtering of two sparse uniform sub-planar arrays that compose the electromagnetic vector coprime planar array, the present invention forms a coprime composite processing method based on a sparse uniform sub-planar array output signal.Type: GrantFiled: December 16, 2020Date of Patent: December 12, 2023Assignee: Zhejiang UniversityInventors: Jiming Chen, Zhiguo Shi, Hang Zheng, Chengwei Zhou
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Patent number: 11841452Abstract: Systems and methods for facilitating the sorting of assets to sort locations. In various embodiments, a sort employee scans an asset indicia using a user device, which stores asset data corresponding to the stored asset. As the sort employee nears a sort location (e.g., a delivery vehicle) with the asset and the user device, the user device automatically communicates wirelessly with a sort location receiver to associate the asset data with data indicative of the sort location where the user deposits the asset. In various embodiments, a device may determine whether the user device is proximate the appropriate sort location for the item, and may generate an alert upon a determination that the user device is proximate an incorrect sort location.Type: GrantFiled: August 27, 2021Date of Patent: December 12, 2023Assignee: UNITED PARCEL SERVICE OF AMERICA, INC.Inventors: Scott Alan Loverich, Ted Abebe, Lawrence A. Lagrosa, Richard Allen Kerslake, Jonathan C. Gray, Carl M. Skonberg
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Patent number: 11835635Abstract: A computer-implemented method includes: selecting between a first location tracking technique and a second location tracking technique used to track a user device. The selecting includes: receiving a communications signal emitted from the user device via one or more network devices; selecting the first tracking location technique based on receiving the communications signal; determining that the user device is outside communications range of the one or more network devices; and selecting the second tracking location technique based on the determining that the user device is outside communications range of the one or more network devices. The method further includes monitoring location information of the user device based on the selecting between the first location tracking technique and the second location tracking technique; and storing or outputting the location information.Type: GrantFiled: October 27, 2021Date of Patent: December 5, 2023Assignee: INTREXInventor: Ted Tzirimis
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Patent number: 11828856Abstract: A portable locator includes a locator housing having a display head that supports a display. A GPS module includes a frame and an antenna arm extending from a side margin of the frame. The frame defines a display aperture such that the frame is removably installable on the display head of the portable locator with the display visible through the display aperture. An electrical interface provides for electrical communication with the portable locator with the frame removably installed thereon.Type: GrantFiled: July 19, 2021Date of Patent: November 28, 2023Assignee: Merlin Technology, Inc.Inventors: Mark Marvin, Brian Kelly
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Patent number: 11822000Abstract: A method is provided for estimating a signal's angle of arrival (AOA) in a communications system. Starting values for each of a horizontal AOA and a vertical AOA are estimated. The estimated vertical AOA starting value is used to select a horizontal PDOA trace of horizontal PDOA calibration data. The selected horizontal PDOA trace is interpolated to determine a best horizontal AOA estimate for a current iteration. The estimated horizontal AOA starting value is used to select a vertical PDOA trace of vertical PDOA calibration data. The selected vertical PDOA trace is interpolated to determine a best vertical AOA estimate for the current iteration. After each iteration, determining if a maximum number of iterations has been reached or if the best horizontal or vertical AOA estimate has not changed by a predetermined amount. When one of these is true, the best horizontal and vertical AOA estimates are used.Type: GrantFiled: November 4, 2021Date of Patent: November 21, 2023Assignee: NXP B.V.Inventors: Michael Schober, Pablo Corbalán Pelegrín, Shengyang Xu
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Patent number: 11821996Abstract: Systems and methods for tracking entities and objects in an environment can include an entity-mounted instrumentation (EMI) and an object-mounted instrumentation (OMI). The OMI can include a first IMU array to detect the object orientation, and a TOF pulse transmitter to transmit a TOF pulse. The EMI can include a second IMU array to detect the entity orientation, a GPS receiver, and an array of TOF sensors to receive various versions of the TOF pulse. The EMI can determine a location and orientation of the entity using GPS data and orientation data generated by the second IMU array. The EMI can determine a relative location of the object using the various versions of the TOF pulse, and can determine a location of the object using the relative location of the object and the location of the entity. The EMI can determine the object orientation using data provided by the first IMU array.Type: GrantFiled: September 28, 2020Date of Patent: November 21, 2023Assignee: LOCKHEED MARTIN CORPORATIONInventors: Peter F. Reardon, Timothy J. O'Malley
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Patent number: 11815607Abstract: In conditions in which Global Navigation Satellite System (GNSS) signal spoofing is likely occurring, a GNSS receiver may be operated in a reduced operational state with respect to one or more GNSS bands that are likely being spoofed. According to embodiments, a reduced operational state with regard to a GNSS band may comprise performing one or more of the following functions with respect to that GNSS band: disabling data demodulation and decoding, disabling time setting (e.g., time of week (TOW), week number, etc.) disabling acquisition of unknown/not visible satellites, disabling satellite differences, disabling error recovery, reducing non-coherent integration time, and duty cycling the power for one or more receiver blocks associated with the GNSS band.Type: GrantFiled: July 29, 2021Date of Patent: November 14, 2023Assignee: QUALCOMM IncorporatedInventors: Jordan Cookman, Krishnaranjan Rao, Jeffrey Wong, David Tuck
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Patent number: 11815613Abstract: A system for recognizing the location of a subject, comprises a server, signal transceivers, and a tracking device. The server transmits a request and stores a map file. The signal transceivers respectively communicate with the server to receive the request, and broadcast a reference signal to the other signal transceivers. The tracking device bidirectionally communicates with the signal transceivers, and periodically sends a tracking signal. After each of the signal transceivers obtains the first received signal strength indicator corresponding to the received reference signal and the second received signal strength indicator corresponding to the received tracking signal, each transmits the first signal strength indicator and the second signal strength indicator to the server.Type: GrantFiled: June 18, 2021Date of Patent: November 14, 2023Assignee: TRACMO, INC.Inventors: Jong-Liang Nieh, Chang-Yi Wu, Szu-Ying Li
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Patent number: 11808861Abstract: A first pair of a wide-lane (WL), zero-difference (ZD) bias filter and corresponding supplemental WL bias predictive filter determines the time-variant wide-lane bias for a corresponding satellite based on adaptive estimation responsive to tuned dynamic noise provided by the supplemental wide-lane bias predictive filter for each satellite. A second pair of narrow-lane (NL), zero-difference (ZD) bias filter and corresponding NL bias filter/code-phase bias filter determines the time-variant narrow-lane bias (e.g., refraction corrected (NL) code-phase bias) for a corresponding satellite based on adaptive estimation on adaptive estimation responsive to tuned dynamic noise within a narrow-lane bias/code-phase bias filter for each satellite. The electronic data processor of a data processing center is configured to provide a correction signal comprising the wide-lane ambiguities, the time-variant wide-lane bias and the narrow-lane ambiguities and the time-variant narrow lane bias.Type: GrantFiled: September 22, 2021Date of Patent: November 7, 2023Assignee: Deere & CompanyInventors: Liwen Dai, Yiqun Chen
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Patent number: 11802971Abstract: An Real-Time Kinematic (RTK) and/or Differential GNSS (DGNSS) system is disclosed in which correction data from a plurality of reference stations is provided to the mobile device. A selection of reference stations (from which correction data is provided to the mobile device) can be made based on factors such as the approximate location of the mobile device, geometry of the reference stations, and/or other factors. The mobile device can combine the correction data from the plurality of reference stations in different ways to determine an accurate position fix for the mobile device, without interpolating correction data from the plurality of reference stations.Type: GrantFiled: March 2, 2021Date of Patent: October 31, 2023Assignee: QUALCOMM IncorporatedInventors: Ning Luo, Min Wang, Gengsheng Zhang, Bo Zheng, Yinghua Yang, Han Zhang
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Patent number: 11789158Abstract: A tones processing system including an interference tone determination module (ITDM), an interference tone tracker module (ITTM) and an interference tone removal module (ITRM) is provided. The ITDM sequentially searches for one or more continuous wave interference (CWI) tones in N samples of intermediate frequency (IF) data within a programmable signal frequency band. The ITTM tracks the detected CWI tones. The ITRM removes the tracked CWI tones from the N samples of IF data using one or more interference tone removal units (ITRUs). Each of the ITRUs includes a second signal generator, a second mixer, a tone filter for suppressing the tracked CWI tones, and a quantizer for reducing the number of processing bits in a tone suppressed output signal. The ITRM performs frequency shift compensation and phase rotation compensation with reduced logic area and power consumption in the global navigation satellite system, receiver.Type: GrantFiled: April 21, 2021Date of Patent: October 17, 2023Assignee: ACCORD IDEATION PRIVATE LIMITEDInventors: Gowdayyanadoddi Shivaiah Naveen, Vikram Kudligi Hiramat, Rajashekaran Chinnadurai, Manjeeth Thattam Kandiyil, Mahesh Kumar
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Patent number: 11789110Abstract: Systems and methods for fault detection, exclusion, isolation, and re-configuration of navigation sensors using an abstraction layer are provided. In certain embodiments, a system includes a plurality of sensors that provide redundant sensor measurements, wherein redundancy of the redundant sensor measurements is achieved based on an independence between measurements from different physical sensor units in the plurality of sensors. The system additionally includes a fusion function configured to receive the redundant sensor measurements from each sensor in the plurality of sensors and calculate fused navigation parameters. Further, the system includes an abstraction layer that calculates an estimated state based on the fused navigation parameters, wherein the estimated state comprises safety assessment information for the fused navigation parameters and the fused navigation parameters.Type: GrantFiled: August 24, 2021Date of Patent: October 17, 2023Assignee: Honeywell International Inc.Inventors: Mark A. Ahlbrecht, Mats Anders Brenner, Bruce G Johnson, Milos Sotak, Zdenek Kana, James Arthur McDonald
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Patent number: 11789159Abstract: A tones processing system including an interference tone determination module (ITDM), an interference tone tracker module (ITTM) and an interference tone removal module (ITRM) is provided. The ITDM sequentially searches for one or more continuous wave interference (CWI) tones in N samples of intermediate frequency (IF) data within a programmable signal frequency band. The ITTM tracks the detected CWI tones. The ITRM removes the tracked CWI tones from the N samples of IF data using one or more interference tone removal units (ITRUs). Each of the ITRUs includes a second signal generator, a second mixer, a tone filter for suppressing the tracked CWI tones, and a quantizer for reducing the number of processing bits in a tone suppressed output signal. The ITRM performs frequency shift compensation and phase rotation compensation with reduced logic area and power consumption in the global navigation satellite system, receiver.Type: GrantFiled: April 21, 2021Date of Patent: October 17, 2023Assignee: ACCORD IDEATION PRIVATE LIMITEDInventors: Gowdayyanadoddi Shivaiah Naveen, Vikram Kudligi Hiramat, Rajashekaran Chinnadurai, Manjeeth Thattam Kandiyil, Mahesh Kumar
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Patent number: 11782169Abstract: A method of compensating a position of an object by using a Global Navigation Satellite System (GNSS) processor is provided. The method includes generating a compensated position associated with a target satellite at a compensation target time based on a pseudo range between the object and the target satellite at the compensation target time, generating a displacement vector of the object based on the compensated position at the compensation target time and a previous position of the object at a previous time that is prior to the compensation target time, determining a weight for the compensated position associated with the target satellite based on a velocity vector at the compensation target time and the displacement vector, and compensating a predicted position of the object according to the weight and the compensated position.Type: GrantFiled: March 10, 2021Date of Patent: October 10, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Joonha Kim, Jaebum Cho
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Patent number: 11782119Abstract: Procedures are disclosed to enable a wireless device to determine its alignment direction toward a base station or another device in 5G or 6G, using a “phased beam-alignment pulse”, which is a transmitted pulse having phase modulation that varies with angle. For example, the pulse may be transmitted spanning 360 degrees of angle, and may be phase modulated varying from 0 to 360 degrees of phase in the same angular range. A user device can receive the phased beam-alignment pulse and immediately determine, from the phase, the alignment angle toward the transmitter. In another embodiment, the transmitter transmits a uniform, non-directional pulse, and the receiver receives it using an antenna configured to impose an angle-dependent phase shift, thereby indicating the alignment direction. With either method, wireless entities can align their beams rapidly and efficiently, using just one or two resource elements, without complex encoding or time-consuming handshaking.Type: GrantFiled: August 29, 2022Date of Patent: October 10, 2023Assignee: Ultralogic 6G, LLCInventors: David E. Newman, R. Kemp Massengill
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Patent number: 11782165Abstract: An exemplary method of calculating a position of a GNSS device (e.g., a GNSS rover device) comprises: at the GNSS device in an enhanced real-time kinematic (RTK) mode: receiving a first set of GNSS data corresponding to a first epoch; storing the first set of GNSS data in a buffer; receiving a second set of GNSS data corresponding to a second epoch that is after the first epoch; after receiving the second set of GNSS data, retrieving the first set of GNSS data from the buffer; and calculating the position of the GNSS device based on the retrieved first set of GNSS data and the second set of GNSS data.Type: GrantFiled: April 20, 2021Date of Patent: October 10, 2023Assignee: Javad GNSS, Inc.Inventor: Javad Ashjaee
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Patent number: 11774600Abstract: A method and device determines an evolving position of a device using electromagnetic interference, which is jamming electromagnetic navigation signals. An antenna arrangement receives both the electromagnetic navigation signals and the electromagnetic interference. A discerned position is determined for each of one or more jamming antennas emitting the electromagnetic interference. A detection circuit determines each discerned position from the electromagnetic interference received at the device and at least one measurement of the evolving position using the electromagnetic navigation signals. The evolving position of the device is determined while the electromagnetic interference prevents subsequently measuring the evolving position using the electromagnetic navigation signals. An evaluation circuit determines the evolving position from the electromagnetic interference received at the device and from each discerned position of the one or more jamming antennas.Type: GrantFiled: December 9, 2021Date of Patent: October 3, 2023Assignee: United States of America as represented by the Secretary of the NavyInventors: Michael Oren Ferguson, Ceferino Teodoro Fajardo, III