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公开(公告)号：US10481253B1
公开(公告)日：2019-11-19
申请号：US15341281
申请日：2016-11-02
摘要： A monopulse tracker includes multiple dual-axis monopulse antenna systems that are angled with respect to one another. The orientations of the monopulse antenna systems create a much larger field of view for the monopulse tracker to eliminate the need to steer the monopulse tracker. The monopulse tracker can be configured to estimate a position of an object based on tracking information received from more than one monopulse antenna system therefore increasing the accuracy of the estimated position. The multiple monopulse antenna systems can be arranged in a low-profile housing to facilitate use of the monopulse tracker on aircraft.
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公开(公告)号：US09798000B2
公开(公告)日：2017-10-24
申请号：US14359482
申请日：2013-12-10
申请人： INTEL CORPORATION
IPC分类号： G01S13/06 , G01S7/02 , G01S13/66 , G01S13/02 , G01S13/68 , G01S13/74 , G01C21/20 , G01S13/87
CPC分类号： G01S13/06 , G01C21/206 , G01S7/02 , G01S13/0209 , G01S13/66 , G01S13/68 , G01S13/74 , G01S13/878
摘要： Methods and systems to provide location and navigation information to a user within a building. In an embodiment, low power radars may be used to locate and track a user. Moreover, the systems and methods described herein may take advantage of the known layout of a building, or may ascertain the layout using the radar devices. This information may be used to direct a user from a current location to a desired destination. In some contexts, such as stores, radio frequency ID (RFID) tags may be used to identify a particular destination, such as a particular product in a particular aisle in a store. Multiple persons may be tracked as they move about the building, so that the more frequently used paths may be identified for moving from point to point. These identified paths may then be used in constructing a path for a user who needs directions.
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公开(公告)号：US09797979B2
公开(公告)日：2017-10-24
申请号：US14509211
申请日：2014-10-08
CPC分类号： G01S3/28 , G01S3/046 , G01S3/40 , G01S13/68 , G01S13/75 , G01S13/878 , G06K7/10099
摘要： An RFID tag reading system and method estimate bearings of RFID tags. When the RSSI of a primary and/or secondary RFID receive signal is below a threshold, a primary receive beam is steered in a limited scan to an array of locations distributed around the location at which the RSSI of the primary receive signal is a maximum, and the RSSI of the primary receive signal is recorded at each location. The recorded RSSIs are processed to determine an effective weighted center of distribution of the recorded RSSIs, and the bearing for the tag based on the weighted center of distribution is thus estimated.
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14.发明授权Target-tracking radar and method for responding to fluctuations in target SNR 有权目标跟踪雷达和响应目标SNR波动的方法公开(公告)号：US08803731B2
公开(公告)日：2014-08-12
申请号：US13075299
申请日：2011-03-30
申请人： Damon C. Turner , Brett J. Young
发明人： Damon C. Turner , Brett J. Young
CPC分类号： G01S13/72 , G01S13/4427 , G01S13/66 , G01S13/685 , G01S13/70
摘要： Embodiments of a target-tracking radar and methods for responding to fluctuations in target SNR are generally described herein. In some embodiments, the target-tracking radar may be configured to determine whether a target can be considered a point target based on the SNR of received signals and off-boresight error estimates. Measurement-variance estimates generated from the SNR are provided to a target-state estimator when the target is determined to be a point target. When the target is determined not to be a point target, the measurement-variance estimates generated from SNR are not used by the target-state estimator. This may allow targets to be engaged at increased range.
摘要翻译： 目标跟踪雷达的实施例和用于响应目标SNR的波动的方法在这里一般地被描述。 在一些实施例中，目标跟踪雷达可以被配置为基于接收信号的SNR和离开视轴误差估计来确定目标是否可以被认为是点目标。 当目标被确定为点目标时，从SNR产生的测量方差估计被提供给目标状态估计器。 当目标被确定为不是点目标时，由SNR产生的测量方差估计不被目标状态估计器使用。 这可能允许目标在更大的范围内进行。
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公开(公告)号：US08106814B2
公开(公告)日：2012-01-31
申请号：US12517171
申请日：2007-11-30
IPC分类号： G01S13/68
摘要： The present invention relates to a method enabling precise determination of the elevation of a projectile following a ballistic trajectory by use of a conventional Doppler surveillance radar. The method includes calculating first the estimate {circumflex over (Γ)}ρ of the value of the radial component Γρ of the acceleration of the projectile from the quantities {dot over (d)} and {umlaut over (d)}, respectively representing the first derivative and the second derivative with respect to time of the Doppler velocity d of the projectile, then calculating the estimate {circumflex over (V)} of the speed V of the projectile from d, {dot over (d)} and {circumflex over (Γ)}ρ, and finally calculating the estimate Ê of its angle of elevation E from d and {circumflex over (V)}. The method according to the invention may apply to the protection of sensitive areas against the firing of ballistic projectiles.
摘要翻译： 本发明涉及一种能够通过使用传统的多普勒监视雷达来精确地确定弹道轨迹之后的射弹仰角的方法。 该方法包括首先计算估计值（＆Ggr;）}＆rgr; 的径向分量的值＆Ggr;＆rgr; 分别表示相对于射弹的多普勒速度d的时间的一阶导数和二次导数的数量{dot over（d）}和{umlaut over（d）}的射弹的加速度，然后计算 从d，{dot over（d）}和{circumflex over（＆Ggr;）}和rgr估计射弹速度V的{v（v）}，并最终计算其俯仰角E的估计E d和{circumflex over（V）}。 根据本发明的方法可以适用于对弹道射弹的射击的敏感区域的保护。
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公开(公告)号：US5786787A
公开(公告)日：1998-07-28
申请号：US750588
申请日：1996-12-06
申请人： Lars Eriksson , Bert-Eric Tullsson
发明人： Lars Eriksson , Bert-Eric Tullsson
CPC分类号： G01S13/66 , G01S13/68 , G01S13/931 , G01S13/58 , G01S2013/9325 , G01S2013/9353 , G01S2013/9357 , G01S2013/9375
摘要： A method for determining the course of another vehicle in relation to one's own vehicle by measuring the position of the other vehicle in relation to one's own vehicle with a transmitter/receiver system, such as a radar system permits course determination both on straight and on bend segments. According to the method, the side location of the other vehicle and one's own vehicle is determined at a position where the other vehicle is level with one's own vehicle, by moving the front vehicle backwards in time and/or moving the rear vehicle forwards in time, on the basis of position measurements of the position of the other vehicle. The side location of the other vehicle is compared with the side location of one's own vehicle, by which a measure of the discrepancy between the course of the other vehicle and the course of one's own vehicle is obtained. According to the invention, the position where the other vehicle is level with one's own vehicle may be determined on the basis of the inertial speed vector of the other vehicle at one or more points in time.
摘要翻译： PCT No.PCT / SE95 / 00660 Sec。 371日期1996年12月6日第 102（e）日期1996年12月6日PCT归档1995年6月7日PCT公布。 第WO95 / 34830号公报 日期1995年12月21日一种用于通过用诸如雷达系统的发射机/接收机系统测量另一车辆相对于自己的车辆的位置来确定另一车辆相对于自己的车辆的路线的方法允许课程确定 在直线和弯曲部分。 根据该方法，通过在时间上向前移动前方车辆和/或使后方车辆及时向前移动，在其他车辆与自己的车辆平齐的位置处确定另一车辆和自己的车辆的侧面位置 基于其他车辆的位置的位置测量。 将另一车辆的侧面位置与自己的车辆的侧面位置进行比较，通过该位置获得另一车辆的路线与自己的车辆的路线之间的差异的度量。 根据本发明，可以基于另一车辆的一个或多个时间点的惯性速度矢量来确定其他车辆与自己的车辆平齐的位置。
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17.发明授权
公开(公告)号：US5761382A
公开(公告)日：1998-06-02
申请号：US861215
申请日：1997-05-21
申请人： Soheil Shams
发明人： Soheil Shams
CPC分类号： G01S5/04 , G01S13/723 , G01S7/417 , G01S13/68 , G01S7/36
摘要： A multiple elastic feature network having N independent sets of M feature specific neurons that respond to the temporal properties of a number of targets. The targets are represented by sets of M feature specific coordinates. Each of the neurons and its coordinates are labeled with a different one of the feature types, and have an associated receptive field and distortion, locking and expectation parameters. A sequence of candidate coordinates, which include the targets' coordinates as well as false or ghost coordinates, is input to the MEFN. Each successive candidate coordinate selects the closest neuron that has the same feature type and whose receptive field includes the candidate coordinates. The coordinates of the selected neuron and the other neurons in its set are adjusted towards the candidate coordinates. The distortion, expectation and locking parameters measure the distortion in the neurons' coordinates, the elapsed time since each neuron was last selected and the changes in the neurons' coordinates, respectively. As the sets of neurons converge towards respective targets, the expectation, distortion and locking parameters are reduced, and hence the receptive fields are reduced, causing the neurons to lock onto and track the targets.
摘要翻译： 具有N个独立的M组的多重弹性特征网络具有对多个目标的时间特性作出响应的特定特征神经元。 目标由一组M特征特定坐标表示。 每个神经元及其坐标都用不同的特征类型进行标记，并具有相关的接收场和失真，锁定和期望参数。 包括目标坐标以及虚假或重心坐标的候选坐标序列被输入到MEFN。 每个连续的候选坐标选择具有相同特征类型的最接近的神经元，其接收场包括候选坐标。 所选神经元和其集合中的其他神经元的坐标被调整为候选坐标。 失真，期望和锁定参数测量神经元坐标中的失真，分别是每个神经元最后一次被选择的经过时间和神经元坐标的变化。 随着神经元集合到各个目标，预期，失真和锁定参数被减少，因此接收场减少，导致神经元锁定并跟踪目标。
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公开(公告)号：US5386737A
公开(公告)日：1995-02-07
申请号：US83647
申请日：1993-06-25
申请人： Walter S. Soeder , John J. Proscia
发明人： Walter S. Soeder , John J. Proscia
CPC分类号： G01S13/86 , B64F5/0045 , G01S7/411 , Y10S180/904
摘要： Portable RCS versus azimuth measurement apparatus for an aircraft to be tested has a dolly attached to the aircraft at a location on a supporting surface. A nose wheel adapter mounted on the dolly temporarily replaces the nose wheel of the aircraft with a spare nose wheel. An electric motor on the dolly coupled to the spare nose wheel rotates the spare nose wheel. A beam structure has a first end removably affixable to the dolly and a spaced opposite second end extending under the axis of rotation of the aircraft and between the main landing wheels. A synchronizing gearbox, mounted on the second end of the beam structure at the axis of rotation of the aircraft, has an output shaft and senses rotation of the aircraft about the axis of rotation, sensed rotation of the aircraft being indicated by rotation of the output shaft. Rotation of the output shaft of the gearbox is restrained relative to the surface by an anchor. A radar computer signal is utilized to compare signals from the motor and the gearbox to produce an output command to the motor for rotating the spare nose wheel. This rotates the aircraft about its axis of rotation. The gearbox transmits signals indicating sensed rotation of provide data for RCS versus azimuth measurement.
摘要翻译： 用于要测试的飞行器的便携式RCS与方位测量装置具有在支撑表面上的位置附接到飞行器的台车。 安装在小车上的前轮适配器用备用前轮临时取代飞机的前轮。 连接到备用前轮的小车上的电动马达使备用前轮旋转。 梁结构具有可拆卸地固定到台车上的第一端和在飞行器的旋转轴线之下且在主着陆轮之间延伸的间隔开的相对的第二端。 在飞行器的旋转轴线处安装在梁结构的第二端上的同步齿轮箱具有输出轴并且感测飞机围绕旋转轴的旋转，飞行器的感测旋转由输出的旋转指示 轴。 齿轮箱的输出轴的旋转通过锚固体相对于表面被限制。 使用雷达计算机信号来比较来自马达和齿轮箱的信号，以产生用于旋转备用前轮的马达的输出命令。 这使飞机绕其旋转轴线旋转。 齿轮箱传输指示RCS与方位角测量的提供数据的感测旋转的信号。
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公开(公告)号：US5192955A
公开(公告)日：1993-03-09
申请号：US765346
申请日：1991-09-25
申请人： Bao N. Hoang
发明人： Bao N. Hoang
CPC分类号： G01S13/685 , G01S13/449
摘要： A target tracking system and methods that can isolate and maintain stable track on a selected target in multiple-target environment. In multiple-target environments, the signal returns received at the sum and difference channels are composites of individual targets. By decomposing received signals into individual components, angle measurements to each target are computed, and consequently, a specified target is isolated and accurately tracked in a stable manner. The present invention provides for apparatus and methods that compute angle measurements to each individual airborne target in a multiple target environment. The composite return signals from a number of targets that are closely spaced in Doppler are decomposed into their individual components, and hence, tracking measurements to each target are obtained without interference from other targets. The present invention may be used to determine the angular position of individual airborne targets within a multiple target environment. The present invention exploits the phase relationship between the sum and difference channel outputs of a single Doppler filter and between the sum channel outputs of two adjacent Doppler filters to decompose composite signal returns of targets into their individual components. Consequently, an independent angle measurement for each target is obtained. In addition, the number of targets with distinct velocities may also be determined. Implementation of the present invention improves the performance of single target tracking in multiple-target environments. Since independent measurement to each target is obtained, accurate and stable track on any target is maintained.
摘要翻译： 目标跟踪系统和方法，可以在多目标环境中隔离并维护所选目标上的稳定轨迹。 在多目标环境中，信号返回接收到的和和差分信道是单个目标的复合。 通过将接收到的信号分解成各个分量，计算每个目标的角度测量，因此，指定的目标被隔离并且以稳定的方式被精确地跟踪。 本发明提供了在多个目标环境中对每个单独的机载目标计算角度测量的装置和方法。 来自在多普勒中紧密间隔的多个目标的复合返回信号被分解成它们的各个分量，因此在不受其他目标的干扰的情况下获得对每个目标的跟踪测量。 本发明可以用于确定多个目标环境中各个机载目标的角位置。 本发明利用单个多普勒滤波器的和信道输出和差分信道输出之间的相位关系以及两个相邻多普勒滤波器的和信道输出之间的相位关系，以将目标的复合信号返回分解成它们的各个分量。 因此，获得每个目标的独立角度测量。 此外，还可以确定具有不同速度的目标的数量。 本发明的实现提高了多目标环境中单目标跟踪的性能。 由于获得对每个目标的独立测量，因此保持任何目标的准确和稳定的轨迹。
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公开(公告)号：US4837576A
公开(公告)日：1989-06-06
申请号：US672579
申请日：1984-11-16
申请人： Helmut E. Schwarz
发明人： Helmut E. Schwarz
摘要： An antenna tracking system tracks a primary antenna to follow a moving signal source, such as a communication satellite. A secondary antenna has a greater beam width than the primary antenna and receives the same tracking signal from the satellite. The primary antenna is tracked according to a predetermined search pattern which causes a variation in the signal amplitude depending upon the relative location of the satellite and the antenna position. The signal strength signals from the two antennas are input to a summation function which takes the difference of the two signals. The noise and signal variation component of the two signals is substantially the same and is therefore eliminated from the resulting difference signal. An antenna control unit utilizes the resulting difference signal to select the optimum signal strength for the particular step of the search pattern. This system is particularly applicable to high frequency communication channels in the higher (86 Ghz and above) frequency band which are subject to atmospheric distortion and noise.
摘要翻译： 天线跟踪系统跟踪主天线以跟随移动信号源，例如通信卫星。 辅助天线具有比主天线更大的波束宽度，并从卫星接收相同的跟踪信号。 主天线根据预定的搜索模式进行跟踪，该搜索模式根据卫星的相对位置和天线位置而引起信号幅度的变化。 来自两个天线的信号强度信号被输入到获得两个信号的差的求和函数。 两个信号的噪声和信号变化分量基本相同，因此从得到的差分信号中消除。 天线控制单元利用得到的差分信号为搜索模式的特定步骤选择最佳信号强度。 该系统特别适用于经受大气失真和噪声的较高（86GHz以上）频段的高频通信信道。
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