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1.发明申请公开(公告)号：US20190113596A1
公开(公告)日：2019-04-18
申请号：US15915910
申请日：2018-03-08
发明人： Makoto HIGAKI
IPC分类号： G01S3/04
摘要： A radio wave incoming direction estimation apparatus according to an aspect of the present invention estimates an incoming direction of an incoming radio wave reaching an array antenna apparatus including a plurality of antennas. The radio wave incoming direction estimation apparatus includes a virtual current calculator, and an incoming direction estimator. The virtual current calculator calculates a virtual current at each antenna from a received current that is generated at each of the antennas by the incoming radio wave on the basis of data indicating a relationship between supplied power to each of the antennas and a current that is generated at each of the antennas by the supplied power. The incoming direction estimator estimates the incoming direction of the incoming radio wave on the basis of the virtual current at each of the antennas.
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公开(公告)号：US09810768B2
公开(公告)日：2017-11-07
申请号：US14351522
申请日：2012-08-27
申请人： Volker Gross , Michael Schoor
发明人： Volker Gross , Michael Schoor
CPC分类号： G01S7/02 , G01S3/16 , G01S3/22 , G01S13/02 , G01S13/34 , G01S13/343 , H01Q1/3233 , H01Q3/24 , H01Q25/002
摘要： An angle-resolving radar sensor, e.g., for motor vehicles, includes; an antenna having multiple antenna elements which are each switchable to one of multiple evaluation channels; and an evaluation device for determining the angle of incidence of a received signal based on the amplitudes measured in the evaluation channels. The number of antenna elements is greater than the number of evaluation channels and a switching device is provided to connect the evaluation channels alternatingly to different selections of antenna elements.
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公开(公告)号：US09521020B2
公开(公告)日：2016-12-13
申请号：US14624701
申请日：2015-02-18
CPC分类号： H04L25/03866 , G01S3/16 , H04B1/10 , H04B7/0814 , H04B7/086 , H04L25/0204 , H04L25/08 , H04W4/80
摘要： It is disclosed to insert an anti-whitened data block, which is obtainable from a specific data block by anti-whitening, into a data block that is to be whitened by a whitening to yield a whitened data block, wherein the anti-whitening compensates the whitening so that the whitened data block will comprise the specific data block in non-whitened form. It is further disclosed to output, in a first operating mode, an output data block generated by one of whitening and de-whitening an input data block in its entirety, and outputting, in a second operating mode, one of: an output data block generated by one of whitening and de-whitening all parts of an input data block under exclusion of a specific data block contained in the input data block.
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4.发明授权System and method of estimating true bearings of radio frequency identification (RFID) tags associated with items located directly underneath an overhead antenna array in a controlled area 有权估计与受控区域内直接位于架空天线阵列下方的物品相关联的射频识别（RFID）标签的真实轴承的系统和方法公开(公告)号：US09361494B2
公开(公告)日：2016-06-07
申请号：US14274141
申请日：2014-05-09
CPC分类号： G06K7/10415 , G01S3/16 , G01S3/46 , G01S13/75 , G01S13/751 , G01S13/825 , G06K7/10099 , G06K7/10128 , G06K7/10366
摘要： An RFID tag reading system and method estimate true bearings of RFID tags associated with items located in a scan zone directly underneath an overhead array of antenna elements. A controller energizes a plurality of diametrically opposite antenna elements to yield electric fields having polarizations, and switches each antenna element between mutually orthogonal polarizations. A primary transmit beam and a primary receive beam are steered at a primary steering angle over the scan zone, and a plurality of secondary receive beams are steered over the scan zone at different secondary steering angles that are offset from the primary steering angle by receiving secondary receive signals from each tag, and by processing the secondary receive signals to estimate a true bearing for each tag.
摘要翻译： RFID标签读取系统和方法估计与位于天线元件的顶部阵列下方的扫描区域中的物品相关联的RFID标签的真实轴承。 控制器激励多个径向相对的天线元件以产生具有偏振的电场，并且在相互正交的极化之间切换每个天线元件。 主扫描区和主接收光束以扫描区域上的主要转向角转向，并且多个次级接收光束在不同的辅助转向角度的扫描区域上被转向，通过接收次级 从每个标签接收信号，并通过处理次要接收信号来估计每个标签的真实方位。
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5.发明申请SYSTEM AND METHOD OF ESTIMATING TRUE BEARINGS OF RADIO FREQUENCY IDENTIFICATION (RFID) TAGS ASSOCIATED WITH ITEMS LOCATED DIRECTLY UNDERNEATH AN OVERHEAD ANTENNA ARRAY IN A CONTROLLED AREA 有权估计无线电频率识别（RFID）标签的系统和方法与位于控制区域内的超过天线阵列直接定位的物品相关联的标签公开(公告)号：US20150323662A1
公开(公告)日：2015-11-12
申请号：US14274141
申请日：2014-05-09
CPC分类号： G06K7/10415 , G01S3/16 , G01S3/46 , G01S13/75 , G01S13/751 , G01S13/825 , G06K7/10099 , G06K7/10128 , G06K7/10366
摘要： An RFID tag reading system and method estimate true bearings of RFID tags associated with items located in a scan zone directly underneath an overhead array of antenna elements. A controller energizes a plurality of diametrically opposite antenna elements to yield electric fields having polarizations, and switches each antenna element between mutually orthogonal polarizations. A primary transmit beam and a primary receive beam are steered at a primary steering angle over the scan zone, and a plurality of secondary receive beams are steered over the scan zone at different secondary steering angles that are offset from the primary steering angle by receiving secondary receive signals from each tag, and by processing the secondary receive signals to estimate a true bearing for each tag.
摘要翻译： RFID标签读取系统和方法估计与位于天线元件的顶部阵列下方的扫描区域中的物品相关联的RFID标签的真实轴承。 控制器激励多个径向相对的天线元件以产生具有偏振的电场，并且在相互正交的极化之间切换每个天线元件。 主扫描区和主接收光束以扫描区域上的主要转向角转向，并且多个次级接收光束在不同的辅助转向角度的扫描区域上被转向，通过接收次级 从每个标签接收信号，并通过处理次要接收信号来估计每个标签的真实方位。
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公开(公告)号：US07230565B2
公开(公告)日：2007-06-12
申请号：US10519642
申请日：2003-06-10
申请人： Motoi Nakanishi , Toru Ishii , Tetsu Nishimura
发明人： Motoi Nakanishi , Toru Ishii , Tetsu Nishimura
IPC分类号： G01S13/42
CPC分类号： G01S13/06 , G01S3/16 , G01S13/345 , G01S13/426 , G01S13/584 , G01S13/931
摘要： A radar can detect target azimuths located outside and adjacent to a scanning angular range of a beam by determining changes in received signal strength (a signal-strength profile) in the azimuthal direction as a function of a beam azimuth in a predetermined scanning angular range, and estimating the target azimuth causing the signal-strength profile from the signal-strength profile, which is portion of a convex located adjacent to the outermost angle in the scanning angular range. For example, the target azimuth is estimated by a ratio between the received signal strength at the outermost angle of about 10.0° and the received signal strength at about 9.5°, which is one beam inside the outermost position.
摘要翻译： 雷达可以通过在方位角方向上确定作为预定扫描角度范围内的波束方位角的函数的接收信号强度（信号强度分布）的变化来检测位于波束的扫描角度范围外部并与波束的扫描角度范围相邻的目标方位角， 并且从信号强度分布估计导致信号强度分布的目标方位角，所述信号强度分布是位于与扫描角度范围内的最外角相邻的凸部的一部分。 例如，目标方位通过在最外角度约10.0°处的接收信号强度与在最外侧位置处的一束之间的约9.5°处的接收信号强度之间的比率来估计。
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公开(公告)号：US06369757B1
公开(公告)日：2002-04-09
申请号：US09610470
申请日：2000-07-05
申请人： Yoo S. Song , Hyuck M. Kwon , Kyung M. Min
发明人： Yoo S. Song , Hyuck M. Kwon , Kyung M. Min
IPC分类号： G01S316
摘要： A smart antenna, i.e., blind adaptive antenna array, is a method and system to suppress multiple access interference and to improve performance, for example in a code division multiple access (CDMA) wireless communications system, including third generation (3 g) cdma2000 and wide band (W)-CDMA. A convergence parameter is employed in a smart antenna processor. In general, a constant convergence parameter value is empirically determined and used after studying the convergence speed and the steady state mean square error (MSE) or other performance data, such as bit error rate. As the convergence parameter value increases, the convergence speed also increases but the MSE increases unfortunately, and vice versa. The traditional smart antenna with a constant convergence parameter would yield poor performance when the channel environment changes, which is true particularly when a mobile user moves around. In the present invention, the convergence parameter value is adaptively changed and employed in a smart antenna processor. Two exemplary methods to update the convergence parameter are described. By employing such an adaptive convergence parameter value, convergence speed can be increased and the steady state MSE can be decreased.
摘要翻译： 智能天线（即盲自适应天线阵列）是一种抑制多址干扰并提高性能的方法和系统，例如在包括第三代（3g）cdma2000的码分多址（CDMA）无线通信系统中， 宽带（W）-CDMA。 在智能天线处理器中采用会聚参数。 一般来说，经过收敛速度和稳态均方误差（MSE）或其他性能数据（比特误码率）的研究后，经验确定并使用恒定的收敛参数值。 随着收敛参数值的增加，收敛速度也增加，但MSE增加不幸，反之亦然。 具有恒定收敛参数的传统智能天线在通道环境变化时会产生较差的性能，特别是在移动用户移动时尤其如此。 在本发明中，在智能天线处理器中自适应地改变并采用会聚参数值。 描述用于更新收敛参数的两个示例性方法。 通过采用这种自适应收敛参数值，可以增加收敛速度，并可以减小稳态MSE。
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公开(公告)号：US06246366B1
公开(公告)日：2001-06-12
申请号：US09282821
申请日：1999-03-31
IPC分类号： G01S302
摘要： A direction to the location of a mobile terminal from an antenna array is determined. A sequence of symbols from each antenna 2 in the array, is stored. The sequence contains a known training sequence. The sequence is space processed iteratively so as to produce the effect of the array having a major lobe in its polar diagram at a plurality of different successive directions. A set of crosscorrelation metrics is derived by calculating a crosscorrelation metric for each direction between the combined signals and the known training sequence. The ratio is calculated of the crosscorrelation metric for each direction to the power of the combined signals for that direction to produce a set of direction metrics. A direction is ascribed to the mobile terminal using the direction metrics to determine which direction is most likely.
摘要翻译： 确定从天线阵列到移动终端的位置的方向。 存储阵列中每个天线2的符号序列。 该序列包含已知的训练序列。 该序列被迭代地进行空间处理，以便在多个不同的连续方向上产生在其极坐标图中具有主瓣的阵列的影响。 通过计算组合信号和已知训练序列之间的每个方向的互相关度量，导出一组互相关度量。 计算每个方向的交叉相关度量与该方向的组合信号的功率之比，以产生一组方向度量。 方向归因于移动终端使用方向度量来确定哪个方向是最有可能的。
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公开(公告)号：US4654667A
公开(公告)日：1987-03-31
申请号：US685175
申请日：1984-12-21
CPC分类号： G01S3/16
摘要： A signal-acquisition system (10) for a circular antenna array (12) includes a two-dimensional compressive receiver (18) that performs a two-dimensional Fourier transformation in time and position on the outputs of the array. Each of the outputs of the compressive receiver (18) is fed to input ports of several processing units (24), which multiply them by an appropriate time-dependent function. The resultant modified signals are then processed by Butler matrices (30) that together have a matrix of output ports (32). Each output port is associated with a different combination of azimuth and elevation angles. A signal source at given azimuth and elevation angles with respect to the array (12) causes its greatest response in the output port (32) associated with those angles.
摘要翻译： 一种用于圆形天线阵列（12）的信号采集系统（10）包括二维压缩接收器（18），其在阵列的输出上在时间和位置上执行二维傅里叶变换。 压缩接收器（18）的每个输出被馈送到若干处理单元（24）的输入端口，该处理单元将它们乘以适当的时间相关函数。 所得到的经修改的信号然后由Butler矩阵（30）处理，它们一起具有输出端口（32）的矩阵。 每个输出端口与方位角和仰角的不同组合相关联。 在相对于阵列（12）的给定方位和仰角处的信号源在与这些角度相关联的输出端口（32）中产生最大的响应。
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公开(公告)号：US2485578A
公开(公告)日：1949-10-25
申请号：US58415045
申请日：1945-03-22
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