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公开(公告)号：US20230131721A1
公开(公告)日：2023-04-27
申请号：US17384448
申请日：2021-07-23
申请人： Zoox, Inc.
发明人： Venkata Subrahmanyam Chandra Sekhar Chebiyyam , Subasingha Shaminda Subasingha , Joshua Kriser Cohen , Chuang Wang , Samantha Marie Ting , Badeea Ferdaous Alferdaous Alazem
摘要： Techniques are discussed herein for analyzing radar data to determine that radar noise from one or more target detections potentially conceals additional objects near the target detection. Determining whether an object may be concealed can be based at least in part on a radar noise level based on a target detection, as well as distributions of radar cross sections and/or doppler data associated with particular object types. For a location near a target detection, a radar system may determine estimated noise levels, and compare the estimated noise levels to radar cross section probabilities associated with object types to determine the likelihood that an object of the object type could be concealed at the location. Based on the analysis, the system may determine a vehicle trajectory or otherwise may control a vehicle based on the likelihood that an object may be concealed at the location.
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公开(公告)号：US20230130477A1
公开(公告)日：2023-04-27
申请号：US17452513
申请日：2021-10-27
发明人： Anantharaman BALASUBRAMANIAN , Shuanshuan WU , Kapil GULATI , Junyi LI , Sourjya DUTTA , Preeti KUMARI , Hong CHENG , Gene Wesley MARSH , Shailesh PATIL
IPC分类号： G01S13/87 , H04W12/041 , G01S13/75
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE via reflection by one or more passive devices, a first reference signal (RS) that is based at least in part on a shared first key that corresponds to a configuration of the one or more passive devices. The first UE may receive, from the second UE via reflection, a second RS that is based at least in part on the first key. The first UE may generate a second key based at least in part on a measurement of the second RS. The first UE may transmit a positioning reference signal that is based at least in part on the second key and that is associated with a measurement of a range between the first UE and the second UE. Numerous other aspects are described.
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公开(公告)号：US11555907B2
公开(公告)日：2023-01-17
申请号：US17672071
申请日：2022-02-15
摘要： Metamaterials are described which can be employed with satellites, e.g., small sats, to increase the observability of such satellites. Any type of suitable metamaterial can be used. In exemplary embodiments fractal-based patterns or structures may be used.
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公开(公告)号：US11529194B2
公开(公告)日：2022-12-20
申请号：US16086342
申请日：2017-03-20
发明人： Willem-Jan Arend De Wijs , Gerardus Johannes Nicolaas Doodeman , Jacobus Josephus Leijssen , Michiel De Jong , Jan Harm de Boer
IPC分类号： A61B34/20 , A61B8/08 , G06K7/10 , A61B8/00 , G01S13/88 , G01S13/75 , G01S13/86 , G01S13/76 , A61B90/00 , A61B17/34 , A61M25/01
摘要： The present invention relates to a system SY for determining a position of an RF transponder circuit RTC respective an ultrasound emitter unit UEU. The RF transponder circuit RTC emits RF signals that are modulated based on received ultrasound signals that are emitted or reflected by the ultrasound emitter unit UEU. The position of the RF transponder circuit RTC respective the ultrasound emitter unit UEU is determined based on a time difference ΔT1 between the emission of an ultrasound signal by the ultrasound emitter unit UEU and the detection by the RF detector unit RFD of a corresponding modulation in the RF signal emitted or reflected by the RF transponder circuit (RTC).
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公开(公告)号：US11480670B2
公开(公告)日：2022-10-25
申请号：US16640244
申请日：2018-09-07
发明人： Andrey Vladimirovich Kletsov , Alexander Gennadyevich Chernokalov , Stanislav Vladimirovich Polonsky , Artem Yurevich Nikishov , Dmitriy Sergeevich Zarshchikov
IPC分类号： G01S13/87 , H04W4/33 , H04W4/029 , G01S13/75 , G06K7/10 , G06K19/07 , G06K19/077 , H04W4/021
摘要： Provided are a tag and a method, performed by the tag, of transmitting a response signal regarding a tag search signal. The method includes: receiving, from at least one of a plurality of slave nodes, the tag search signal including identifying data for identifying the tag; charging an energy storage element inside the tag by using the received tag search signal; obtaining the identifying data for identifying the tag from the received tag search signal; determining whether the obtained identifying data matches identification information pre-stored in the tag; and when the energy storage element is charged to a certain numerical value or above and the obtained identifying data matches the identification information pre-stored in the tag, outputting the response signal regarding the tag search signal.
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公开(公告)号：US20220299628A1
公开(公告)日：2022-09-22
申请号：US17353797
申请日：2021-06-21
申请人： Wistron Corporation
发明人： Yao-Tsung Chang , Yin-Yu Chen , Chuan-Yen Kao
摘要： A frequency modulated continuous wave radar system includes at least one identity tag, respectively disposed next to at least one test subject; and a frequency modulated continuous wave radar identity recognition device, including an identity recognition control module, for controlling a test identity tag of the at least one identity tag to be turned on to generate a specific tag reflection signal corresponding to an identity frequency in response to a chirp signal; and a frequency modulated continuous wave radar, for transmitting the chirp signal and receiving at least one reflection signal of the at least one test subject and the specific tag reflection signal in response to the chirp signal, to calculate and determine that the specific tag reflection signal and a specific reflection signal of the at least one reflection signal are corresponding to an adjacent position information. The specific reflection signal is corresponding to test subject information.
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公开(公告)号：US11374434B2
公开(公告)日：2022-06-28
申请号：US16664284
申请日：2019-10-25
发明人： Tzuen-Hsi Huang , Sheng-Fan Yang , Chun-Cheng Chen , Pei-Jung Chung , Chun-Yi Lu
摘要： A radio frequency energy-harvesting apparatus is applied to a radio frequency energy-transmitting apparatus with a location detection function. The radio frequency energy-harvesting apparatus includes a direct current signal receiving-processing unit, a rectification and harmonic generation unit, and a radar wave receiving-transmitting unit. The rectification and harmonic generation unit is electrically connected to the direct current signal receiving-processing unit. The radar wave receiving-transmitting unit is electrically connected to the rectification and harmonic generation unit. The radio frequency energy-transmitting apparatus transmits a radar wave scanning to a space; after the radar wave receiving-transmitting unit receives the radar wave, according to the radar wave, the radar wave receiving-transmitting unit generates an alternating current signal; the radar wave receiving-transmitting unit transmits the alternating current signal to the rectification and harmonic generation unit; the rectification and harmonic generation unit generates a radar reflection harmonic wave and a direct current signal.
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8.发明授权公开(公告)号：US11346915B2
公开(公告)日：2022-05-31
申请号：US16101348
申请日：2018-08-10
发明人： Mario Schuehler , Lars Weisgerber , Johannes Arendt , Rainer Wansch , Heinrich Milosiu , Frank Oehler
IPC分类号： G01S3/28 , G01S7/03 , G06K7/10 , G01S3/14 , G01S13/75 , H01Q25/02 , H01Q21/29 , H04B7/04 , H01Q1/22 , H04B17/318 , H04B7/0408
摘要： What is disclosed is a device for determining a piece of information on a position of a transmitter, having an antenna device and a data processing device. The antenna device receives signals emanating from the transmitter and has a distinguished directional characteristic which relates to a set of spatially different receive sensitivities of the antenna device. The distinguished directional characteristic has a sensitivity minimum associated to a spatial detection region. The data processing device evaluates the signals received from the antenna device with the distinguished directional characteristic, as regards the position of the transmitter relative to the detection region. In addition, a corresponding method is disclosed.
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公开(公告)号：US11300651B1
公开(公告)日：2022-04-12
申请号：US16353462
申请日：2019-03-14
发明人： Yogeshkumar M. Patel , Robert Barreto , Christopher F. Calderon , Nathan Andrew Alday , Andrew Hamilton Kay , Paul Nelson , Donald Patrick Hilliard , Dean Lucian Mensa , Leroy Francis Mumma
摘要： A system for augmenting 360-degree aspect monostatic radar cross section of an aircraft. The system may comprise a pair of pods mountable on opposing wing tips of an aircraft and each having a pod housing with an elongate body tapering forwardly to a nose and rearwardly to a tail. Each pod may comprise a forward SDL disposed within the nose, a rear SDL disposed within the tail, and a pair of mid-body SDLs disposed within a mid-section of the pod housing. The SDLs may be arranged within the pods to reflect radiation and provide coverage around the aircraft over a region of about 360 azimuth degrees. Each SDL may comprise radar absorbing material located on an interior reflective surface, and portions of the elongate bodies may be constructed of radome material. The SDLs may be Luneburg lens having diameters of at least approximately 8-inches.
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公开(公告)号：US20220094070A1
公开(公告)日：2022-03-24
申请号：US17480195
申请日：2021-09-21
发明人： Lee HARLE
摘要： A reflector apparatus is provided. A further aspect employs at least one antenna or radar operably emitting signals, and a moving object-mounted reflector which operably reflects at least some of the signals back to the at least one antenna or radar, the reflector including trihedral walls with metallic reflective surfaces. In another aspect, a programmable controller in an automotive vehicle determines a moving object-characteristic based on at least reflected signals received by a horn antenna using a Doppler or micro-Doppler effect. Still another aspect includes a trihedral reflector which moves with a movable object including handlebars, a straddled user seat and being one of: a bicycle, a motorcycle, or an all-terrain vehicle. A further aspect includes multiple spaced apart trihedral reflectors attached to a user-wearable, flexible and nonconductive substrate.
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