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公开(公告)号：US12000927B2
公开(公告)日：2024-06-04
申请号：US17382991
申请日：2021-07-22
发明人： Won Jong Choi , Seok Hyun Kang , Young Hoon Kim
IPC分类号： G01S13/931 , G01S7/41 , G01S13/44 , G01S13/58 , G01S13/68
CPC分类号： G01S13/931 , G01S7/411 , G01S13/4418 , G01S13/4454 , G01S13/584 , G01S13/68
摘要： A vehicle control system may include a controller that detects an object outside a vehicle, calculates an angle based on a ratio of a relative speed between the object and the vehicle to a speed of the vehicle, and updates a phase curve reflecting a phase distortion of an input signal based on the calculated angle.
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公开(公告)号：US20230384440A1
公开(公告)日：2023-11-30
申请号：US17929602
申请日：2022-09-02
发明人： Xiuzhang Cai , Baokun Liu
IPC分类号： G01S13/68 , G01S13/931
CPC分类号： G01S13/68 , G01S13/931
摘要： This document describes techniques and systems for super-resolution based on iterative multiple-source angle-of-arrival estimation. Beam vectors received by an electromagnetic sensor may include information about multiple objects, but if the objects are close, the objects may initially appear as a single object in a Doppler-range bin. Performing iterative operations on a first angle derived from the beam vector and a subsequent second angle, associated with a second object, derived from the first angle, the first angle and the second angle may be refined and converge toward their actual respective values. The iterative operations include performing calculations involving only the first angle value and the second angle value as unknowns. Noise has been approximated to be random Gaussian noise with zero mean. Additionally, phase ambiguity, associated with sparse channel arrays has been eliminated. The calculations may require less computational complexity and maintain accuracy resulting in safer and reliable tracking systems.
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公开(公告)号：US11782147B2
公开(公告)日：2023-10-10
申请号：US18070026
申请日：2022-11-28
发明人： Tomohiro Murata , Hidekuni Yomo
摘要： An object detection apparatus in a vehicle is provided. The object detection apparatus includes one or more sensors configured to detect at least one object located on at least three rows of seats in the vehicle, the one or more sensors being positioned on a ceiling of the vehicle. The object detection apparatus further includes a circuit configured to determine whether or not the at least one object detected is a living-object. A number of the one or more sensors is less than a number of the at least three rows of seats.
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公开(公告)号：US20220289140A1
公开(公告)日：2022-09-15
申请号：US17649822
申请日：2022-02-03
发明人： Hiroaki CHOJI , Shigeki NISHIYAMA , Naoyuki TAKADA
IPC分类号： B60R25/24 , B60R25/20 , B60R25/01 , G07C9/00 , H04W12/06 , G01S13/02 , G01S13/08 , G01S13/68
摘要： An authentication device including:a processor; a first communication section installed at a vehicle and configured to perform first wireless communication with a terminal; and a plurality of second communication sections installed at the vehicle and configured to perform second wireless communication with the terminal, the processor being configured to: compute a distance and an angle of a position of the terminal with respect to the first communication section based on the first wireless communication of the first communication section with the terminal; cause a second communication section that, out of the plurality of second communication sections, corresponds to the computed angle, to execute the second wireless communication with the terminal; and determine, based on the executed second wireless communication and the computed distance, whether or not the terminal is present in an area corresponding to the second communication section executing the second wireless communication.
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公开(公告)号：US20220236400A1
公开(公告)日：2022-07-28
申请号：US17584277
申请日：2022-01-25
发明人： Uri Iurgel , Stephanie Lessmann , Markus Stefer
摘要： A computer implemented method for determining an angle of a detection comprises the following steps carried out by computer hardware components: acquiring a range rate of the detection; determining a pair of candidate angles of the detection based on the range rate; acquiring a beamvector of the detection; determining a correlation between the beamvector and a reference vector; and determining the angle of the detection based on the pair of candidate angles and based on the correlation.
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公开(公告)号：US20220163658A1
公开(公告)日：2022-05-26
申请号：US17469445
申请日：2021-09-08
摘要： According to one embodiment, a system includes a radar device, a storage device and a controller. The radar device is configured to transmit a first radio wave to an object in a direction of a first angle of the object. The storage device is configured to store first information capable of specifying that a radio wave is transmitted to the first angle of the object by the radar device. The controller is configured to control a direction of a second radio wave to be transmitted by the radar device after the transmission of the first radio wave to a second angle of the object different from the first angle.
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公开(公告)号：US11150338B2
公开(公告)日：2021-10-19
申请号：US16361625
申请日：2019-03-22
申请人： DENSO TEN Limited
发明人： Yasuhiro Kurono , Hiroki Ishikawa
IPC分类号： G01S13/68 , G01S13/931
摘要： An azimuth calculation device includes: an acquiring unit configured to acquire signals of plural receiving antennas of an antenna group in which the plural receiving antennas are arranged in each of a first axis direction and a second axis direction, based on reception signals received by the antenna group; a first azimuth calculation unit configured to perform a calculation of a direction of arrival of radio wave in the first axis direction based on the signals of the plural receiving antennas acquired; a vector decomposition unit configured to perform vector decomposition with respect to each of antenna arrangement positions in the second axis direction using a result of the calculation by the first azimuth calculation unit; and a second azimuth calculation unit configured to perform a calculation of a direction of arrival of radio wave in the second axis direction, using a result of the vector decomposition.
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公开(公告)号：US10591591B1
公开(公告)日：2020-03-17
申请号：US15420424
申请日：2017-01-31
发明人： Sy Prestwich , Jeffrey B Bench , Richard A McNamee
摘要： A mainlobe detection process can include a number of tests that are performed to define when the monopulse antenna system will transition from open loop scanning to closed loop scanning and then to tracking. A hybrid tracking technique is also provided which adaptively discovers and corrects for phase alignment error. Magnitude-only tracking can be performed initially to locate the nulls in the azimuth and elevation ratios and to identify the magnitudes of these ratios at these nulls. Phase tracking can be then performed. During phase tracking, phase corrections can be repeatedly applied to the azimuth and elevation difference channels to correct any phase error that may exist. During this process, the magnitudes of the ratios can be used to determine how the phase corrections should be adjusted. Once the hybrid tracking process is complete, the monopulse antenna system is properly phase-aligned and phase tracking will be correctly employed.
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公开(公告)号：US10527716B2
公开(公告)日：2020-01-07
申请号：US15557381
申请日：2016-03-11
发明人： Manuel Stein , Sebastian Theiler , Josef A. Nossek
摘要： The present invention relates to a method of determining a distance or location of a remote device or reflector, the method comprising: receiving a signal from a remote signal transmitter associated with or contained in or attached to the remote device; estimating a first propagation delay associated with the received signal, wherein the first propagation delay represents a first candidate for a correct propagation delay; deriving a relationship between the first candidate and one or more other candidates for a correct propagation delay from the received signal; determining a plurality of other candidates for a correct propagation delay based on said relationship; generating a likelihood histogram based on said candidates for a correct propagation delay; selecting a propagation delay from said candidates based on the likelihood histogram; and determining a distance or location of the remote device or reflector using the selected propagation delay.
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公开(公告)号：US20190353771A1
公开(公告)日：2019-11-21
申请号：US16361625
申请日：2019-03-22
申请人： DENSO TEN Limited
发明人： Yasuhiro KURONO , Hiroki ISHIKAWA
IPC分类号： G01S13/68
摘要： An azimuth calculation device includes: an acquiring unit configured to acquire signals of plural receiving antennas of an antenna group in which the plural receiving antennas are arranged in each of a first axis direction and a second axis direction, based on reception signals received by the antenna group; a first azimuth calculation unit configured to perform a calculation of a direction of arrival of radio wave in the first axis direction based on the signals of the plural receiving antennas acquired; a vector decomposition unit configured to perform vector decomposition with respect to each of antenna arrangement positions in the second axis direction using a result of the calculation by the first azimuth calculation unit; and a second azimuth calculation unit configured to perform a calculation of a direction of arrival of radio wave in the second axis direction, using a result of the vector decomposition.
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