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公开(公告)号：US4920348A
公开(公告)日：1990-04-24
申请号：US106126
申请日：1987-10-08
Applicant: Elie J. Baghdady
Inventor： Elie J. Baghdady
Abstract: The disclosure relates to methods and apparatus for separating radio signals arriving from different directions and for multiplexing signals intended for receivers dispersed in different directions. The methods and apparatus employ a plurality of antennas with spacing and individual feedline characteristics designed so that a modulation is imparted to each of a plurality of incident signals, for receiving antennas, and radiated signals for transmitting antennas, the modulation level of each signal being determined by the direction of propagation of the signal and by the spacing between antenna pairs. Accordingly, the orientation of lines connecting pairs of antennas as well as the spacing between antennas are set to inhibit the modulation in a particular direction, or to strip a particular modulation off a signal incident from a selected direction.
Abstract translation: 本公开涉及用于分离从不同方向到达的无线电信号并用于多路复用用于分散在不同方向上的接收机的信号的方法和装置。 所述方法和装置采用具有间隔和单独馈线特性的多个天线，其设计使得对多个入射信号，接收天线中的每一个以及用于发射天线的辐射信号进行调制，每个信号的调制电平被确定 通过信号的传播方向和天线对间的距离。 因此，设置连接天线对的线的方位以及天线之间的间隔，以抑制特定方向的调制，或者从特定的调制方向剥离特定的调制。
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公开(公告)号：US4150377A
公开(公告)日：1979-04-17
申请号：US783026
申请日：1977-03-30
Applicant: Vladimir A. Milov , Igor I. Injutkin , Alexandr G. Polivoda , Gennady A. Ermakov , Jury G. Negry , Valery V. Ponomarenko , Evgeny I. Starchenko
Inventor： Vladimir A. Milov , Igor I. Injutkin , Alexandr G. Polivoda , Gennady A. Ermakov , Jury G. Negry , Valery V. Ponomarenko , Evgeny I. Starchenko
CPC classification number: G01S13/103 , G01S1/08
Abstract: A ranging system for guiding moving objects over equidistant tracks comprises a ground station and airborne equipment. The ground station includes a receiver and a transmitter connected to each other and to an aerial. The airborne equipment includes a reference-frequency oscillator; a frequency divider for obtaining meander-shaped signals of the modulation frequency connected to the reference-frequency oscillator; a transmitter connected to the frequency divider an airborne aerial coupled to the transmitter; a receiver connected to the airborne aerial; a digital filter, for producing a reference pulse when the modulation frequency signal derived at the output of the receiver crosses zero, connected to the receiver and to the reference-frequency oscillator; a variable delay unit, to shift the reference pulse within the pulse period of the reference-frequency oscillator, connected to the digital filter; a processing unit, for statistical processing of reliable signals to produce an error signal proportional to the deviation of the moving object from a prescribed track, the polarity of the error signal defining the direction of said deviation, coupled to the variable delay unit and to the reference-frequency oscillator; a deviation indicator, for indicating the deviation of the moving object from a prescribed track, connected to the processing unit; a control unit, to control the magnitude of the shift of the reference pulse in the variable delay unit for indicating prescribed equidistant tracks by zero reading of the deviation indicator, coupled to the processing unit, having two command inputs for manual input of commands, and connected to the variable delay unit.
Abstract translation: 用于将物体引导到等距轨道上的测距系统包括地面站和机载设备。 地面站包括一个接收器和一个连接到天线的发射器。 机载设备包括参考频率振荡器; 用于获得连接到参考频率振荡器的调制频率的曲折形状信号的分频器; 连接到分频器的发射机连接到发射机的机载天线; 连接到机载天线的接收机; 数字滤波器，用于在接收机输出端导出的调制频率信号越过零时连接到接收机和参考频率振荡器，产生参考脉冲; 可变延迟单元，用于在连接到数字滤波器的参考频率振荡器的脉冲周期内移位参考脉冲; 处理单元，用于对可靠信号进行统计处理，以产生与运动物体与规定轨道的偏差成比例的误差信号，限定所述偏差的方向的误差信号的极性，耦合到可变延迟单元和耦合到可变延迟单元 参考频率振荡器; 用于指示运动物体与规定轨道的偏离的偏差指示器，连接到处理单元; 控制单元，用于控制可变延迟单元中的参考脉冲的移位幅度，用于通过对耦合到处理单元的偏差指示器进行零读取来指示规定的等距轨道，具有用于手动输入命令的两个命令输入，以及 连接到可变延迟单元。
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公开(公告)号：US4101893A
公开(公告)日：1978-07-18
申请号：US822175
申请日：1977-08-05
Applicant: Bernard L. Lewis
Inventor： Bernard L. Lewis
Abstract: An aircraft landing system which provides a pilot a perspective view of a nway on which he intends to land under zero visibility conditions. The system includes a multiplicity of microwave transmitters spaced at known intervals along both sides of a runway and a timing generator which causes the microwave transmitters to transmit in sequence. The aircraft contains a monopulse receiver which provides conventional azimuth angle video information to a CRT display and also provides range video information to a Y sweep generator. The latter Y sweep generator generates a sweep voltage for the Y axis of the CRT display which is of sufficient length to display all transmitted pulses from all microwave transmitters in sequence with the correct relative spacing between microwave transmitters.
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公开(公告)号：US11901984B2
公开(公告)日：2024-02-13
申请号：US17613355
申请日：2019-05-28
Applicant: COREHW SEMICONDUCTOR OY
Inventor： Petri Kotilainen
CPC classification number: H04B7/0608 , G01S1/08 , H01Q3/24 , H04B7/0617
Abstract: The invention relates to an antenna soft switching system of an Angle of Departure, AoD, direction finding transmitter unit. The soft switching system comprises: a timing unit for obtaining at least a starting time of a switching event, a switching network arranged on a radio frequency, RF, signal path between an RF port and a first antenna port and a second antenna port, and a generator unit for generating at least one waveform for controlling the switching network. The generator unit is configured to control the switching network so that the amplitude of the RF signal is switched substantially smoothly from the first antenna port to the second antenna port so that level of unwanted emissions of a transmitted RF spectrum of the AoD directional finding transmitter unit are reduced. The invention relates also to an AoD direction finding transmitter unit comprising the antenna soft switching system and to an antenna soft switching method for an AoD directional finding transmitter unit.
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公开(公告)号：US11899090B2
公开(公告)日：2024-02-13
申请号：US17461605
申请日：2021-08-30
Applicant: Meta Platforms Technologies, LLC
Inventor： Carlos Horacio Aldana , Abhishek Kumar Agrawal
CPC classification number: G01S1/08 , G01S13/0209 , G01S13/0218
Abstract: Disclosed herein are related to a system and a method for determining an Angle of Approach (AoA) of a device. A first device may receive a report from a second device having a plurality of ultra-wideband (UWB) devices. The report may include a plurality of values comprising an elevation component and an azimuth component of the AoA from the first device. At least some of the plurality of values may be obtained according to measurements between the plurality of UWB devices of the second devices and the at least one UWB device of the first device. The first device may determine an AoA from the second device, using the plurality of values from the report received from the second device.
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Patent Agency Ranking
公开(公告)号：US11792608B2
公开(公告)日：2023-10-17
申请号：US17887167
申请日：2022-08-12
Applicant: COLLATERAL OPPORTUNITIES OF NEVADA, LLC
Inventor： Michael Kusens
CPC classification number: H04W4/029 , G01S1/08 , G01S5/02521 , G06F16/23 , G06F16/29 , H04B17/318 , G01S2205/02 , G01S2205/09
Abstract: A system and method for identifying a person's location at a school, hotel, office, business, restaurant or other venue and tracking the movements of that person during their visit to the venue. One or more wireless virtual beacons communicate with the person's electronic device. The virtual beacons provide the system with real-time data about the person's whereabouts, allowing for the confirmation and tracking of the person at the location. A first non-limiting example of use, include a company that provides food and beverage allowing the person to place an order for food and beverages on their electronic device and having the order delivered to the person at their current location as determined by the system. Another non-limiting example includes a company performing analytics on the time and movement of it's employees and customers.
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公开(公告)号：US20230308130A1
公开(公告)日：2023-09-28
申请号：US18324830
申请日：2023-05-26
Applicant: NextNav, LLC
Inventor： Arun RAGHUPATHY , Ganesh PATTABIRAMAN , Subramanian S. MEIYAPPAN , Hari SANKAR
IPC: H04B1/7087 , G01S19/11 , H04W72/30 , H04W72/51 , G01S19/46 , G01S5/10 , G01S1/08 , G01S19/24 , G01S19/42 , H04B7/26 , H04W72/0446 , H04B1/709
CPC classification number: H04B1/7087 , G01S19/11 , H04W72/30 , H04W72/51 , G01S19/46 , G01S5/10 , G01S1/08 , G01S19/24 , G01S19/42 , H04B7/2618 , H04W72/0446 , H04B1/709 , H04B2201/7073 , H04W56/005
Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.
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公开(公告)号：US20190253997A1
公开(公告)日：2019-08-15
申请号：US16329886
申请日：2017-08-28
Applicant: CONTINENTAL AUTOMOTIVE GMBH
Inventor： STEFAN HERMANN , MICHAEL SCHMEISSER
IPC: H04W64/00
Abstract: An apparatus and a method for locating a mobile terminal, in particular a mobile radio terminal for a cellular mobile radio network by way of an apparatus of a motor vehicle. The mobile terminal sets up a connection to at least one first receiver, while the mobile terminal does not set up a connection to the at least one further one of the receivers at least for this locating operation. Both the at least one first receiver and at least one of the further ones of the receivers each determine a field strength of at least one radio signal transmitted by the mobile terminal or a first receiver. The field strengths thus determined are used to locate to locate the mobile terminal.
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公开(公告)号：US20190173200A1
公开(公告)日：2019-06-06
申请号：US16180488
申请日：2018-11-05
Applicant: MINDSPARK TECHNOLOGIES PTY LTD
Inventor： Pieter Kuiper
CPC classification number: H01Q21/29 , E21C41/30 , G01S1/08 , G01S11/02 , G01S11/06 , G01V1/008 , G01V3/00
Abstract: A method for monitoring depth of a cave front in a cave-type mine. The method includes: providing a stationary reader device and mobile marker devices, each of the marker devices adapted to (i) emit an electromagnetic signal, (ii) detect strength of the signal emitted by another of the marker devices, and (iii) wirelessly transmit information related to the detected signal via the other marker devices to the stationary reader device; drilling a hole into a rock region of a mine, installing the mobile marker devices at sequential known depths within the hole; monitoring the reader device to detect a decrease in the strength of a signal emitted by a first marker device by a second marker device; and in response to a decrease being detected by the second marker device, inferring the depth of the cave front to be between the known depths of the first and second marker devices.
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公开(公告)号：US20180357910A1
公开(公告)日：2018-12-13
申请号：US15621992
申请日：2017-06-13
Applicant: BENCHMARK ELECTRONICS, INC.
Inventor： RONALD HOBBS , JAMES LUECKE
CPC classification number: G08G5/0069 , B64C27/00 , B64C39/02 , B64C39/024 , B64C2201/108 , B64C2201/128 , B64C2201/14 , B64C2201/141 , B64C2201/145 , B64C2201/18 , B64D45/04 , B64F1/00 , G01S1/08 , G01S3/32 , G01S5/02 , G05D1/0676 , G08G5/02
Abstract: A UAV landing system can include a landing pad defining a landing area including a target point; a plurality of positioning radio transmitters positioned in a spaced apart relation and equidistant from the target point, each radio transmitter transmitting a ranging signal; and a position determination and aircraft navigation system at the incoming UAV to receive the ranging signals; determine a range to each positioning radio using the received ranging signals; compute a position of the UAV relative to the target point; determine a course for the UAV to a point above the target point of the landing pad; fly the UAV to the point above the target point of the landing pad, and cause the aircraft to descend vertically toward the target point when the UAV reaches the point above the target point.
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