Multi-hop positioning
    4.
    发明授权

    公开(公告)号:US11821974B2

    公开(公告)日:2023-11-21

    申请号:US17244745

    申请日:2021-04-29

    CPC classification number: G01S11/04 G01S5/0284 H04W64/003

    Abstract: In one aspect, a process for position estimation entails obtaining (a) at least one direct distance estimate corresponding to a distance between one or more intervening devices, (b) at least one direct angle estimate corresponding to a spanning angle formed involving the one or more intervening devices, or both (a) and (b). Based on (a) the at least one direct distance estimate corresponding to the distance between devices including the one or more intervening devices, (b) the at least one direct angle estimate corresponding to the spanning angle formed involving the one or more intervening devices, or both (a) and (b), an indirect distance estimate between a first device and a second device or an indirect angle estimate involving the first device and the second device is determined. The first device and the second device may be out of range with respect to one another for a direct distance measurement.

    Electromagnetic radiation source locating system

    公开(公告)号:US09874625B2

    公开(公告)日:2018-01-23

    申请号:US13608588

    申请日:2012-09-10

    Inventor: Gerald F. Miller

    Abstract: An electromagnetic radiation source locating system including an electromagnetic radiation sensor including an antenna configured to detect a radiant energy transmission. A position detector is in communication with the controller and is configured to detect the position of the antenna relative to a reference coordinate system, while an orientation sensor is in communication with the controller and is configured to detect the orientation of the antenna and provide an orientation signal to the controller. A range sensor is configured to detect the distance to an aligned object in the path of a directional vector and provide a distance signal indicative thereof to the controller. An aerial vehicle may be in communication with the controller and configured to drop a marker for guiding navigators to the source of the radiant energy transmission.

    Method for determining a direction to a signal-emitting object

    公开(公告)号:US09625562B2

    公开(公告)日:2017-04-18

    申请号:US14405669

    申请日:2012-07-03

    Applicant: Sven Holte

    Inventor: Sven Holte

    CPC classification number: G01S3/48 G01S5/04 G01S5/12 G01S11/04 H01Q1/287 H01Q21/29

    Abstract: The present invention relates to a method for determining a direction to a signal-emitting object by means of a platform comprising at least two antennas separated by a known distance. The method comprises said steps of: receiving, with each of said at least two antennas, a signal from said signal-emitting object at first positions, determining a first phase relation of said signal between said at least two antennas, —receiving, with each of said at least two antennas, a signal from said signal-emitting object at at least second positions, determining at least a second phase relation of said signal between said at least two antennas, characterized by the steps of: determining change(s) in position(s) of at least one antenna of said at least two antennas, and determining a direction to a signal-emitting object based on said first phase relation, said at least second phase relation and said change(s) in position(s) of said at least one antenna. The invention further relates to a platform performing a determination of a direction to a signal-emitting object.

    Method of kinematic ranging
    9.
    发明授权
    Method of kinematic ranging 有权
    运动测距方法

    公开(公告)号:US09476967B2

    公开(公告)日:2016-10-25

    申请号:US14598735

    申请日:2015-01-16

    CPC classification number: G01S7/36 G01S7/021 G01S7/38 G01S11/04

    Abstract: A method of kinematic ranging for finding the range R of a jammer moving on a trajectory involves measuring the bearing of the jammer and the rate of change thereof using an airborne detector radar at a first position (24), causing the airborne detector radar to carry out a manoeuvre such that is it displaced in the horizontal plane by a displacement having orthogonal components Δx, Δy, and measuring the bearing of the jammer at a second position subsequent to the manoeuvre. By making an appropriate choice for the components Δx, Δy, the range R may be found with a desired relative range accuracy, and the error in R may be minimized.

    Abstract translation: 用于找到在轨迹上移动的干扰器的范围R的运动测距方法包括使用机载检测器雷达在第一位置(24)处测量干扰信号的方位及其变化率,使机载检测器雷达携带 在水平面上移动具有正交分量Δx,Δy的位移,并且在机动之后的第二位置处测量干扰信号的方位。 通过对分量Δx,Δy进行适当的选择,可以以期望的相对范围精度找到范围R,并且可以使R中的误差最小化。

    System, apparatus, and method for generating airport surface incursion alerts
    10.
    发明授权
    System, apparatus, and method for generating airport surface incursion alerts 有权
    用于生成机场地面侵入警报的系统,装置和方法

    公开(公告)号:US09135827B1

    公开(公告)日:2015-09-15

    申请号:US13236676

    申请日:2011-09-20

    Abstract: Present novel and non-trivial system, apparatus, and method for generating at least one airport surface incursion alert in a runway awareness and warning system are disclosed. A navigation data source and an airport surface data source provide navigation data and airport surface data to a surface alert generator (“SAG”). The SAG constructs a reference line based upon the airport surface data (e.g., landing threshold points, taxiway hold short lines, etc. . . . ), constructs a ground track line, determines at least one alert distance to an alert point along the ground track line if there is a reference line converging on and intersecting with the ground track line to form an alert point, and generates surface alert data if an alert time to the alert point meets an alert threshold time. The surface alert data is provided to a presentation system in which a visual alert, aural alert, and/or tactile alert is presented.

    Abstract translation: 公开了一种在跑道意识和警告系统中产生至少一次机场地面入侵警报的新型和非平凡的系统,装置和方法。 导航数据源和机场地面数据源向地面警报发生器(“SAG”)提供导航数据和机场地面数据。 SAG基于机场地面数据(例如,着陆阈值点,滑行道保持短线等)构建参考线,构建地面轨迹线,确定至少一个警报距离到地面上的警戒点 如果存在在地面轨迹线上收敛并相交的参考线以形成报警点,并且如果到达警报点的警报时间满足警报阈值时间,则生成表面警报数据。 表面警报数据被提供给其中呈现视觉警报,听觉警报和/或触觉警报的呈现系统。

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