公开(公告)号：US20240230816A1

公开(公告)日：2024-07-11

申请号：US18007896

申请日：2021-05-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shipeng Wang ,  Xihe You ,  Bao Zhang

IPC: G01S3/06 ,  H04B7/0408 ,  H04B7/06 ,  H04B7/08

CPC classification number: G01S3/06 ,  H04B7/0408 ,  H04B7/0696 ,  H04B7/088

Abstract: A beam alignment method includes receiving, at a current location by using a plurality of receive beams, a transmit beam from a network device, and determining reference signal received power (RSRP) of each of the plurality of receive beams; selecting an optimal receive beam from the plurality of receive beams based on the RSRP; determining, based on the optimal receive beam, a rotation angle and a rotation direction for a terminal device to align a peak direction beam with the transmit beam; and adjusting a location of the terminal device based on the rotation angle and the rotation direction, and forming an optimal beam pair by using the peak direction beam and the transmit beam at an adjusted location.

公开(公告)号：US09488715B2

公开(公告)日：2016-11-08

申请号：US13958240

申请日：2013-08-02

Applicant: RAYTHEON COMPANY

Inventor： Andrew Huard ,  Amedeo Larussi ,  Kim McInturff

IPC: G01S3/14 ,  G01S3/06 ,  G01S3/36 ,  G01S7/02

CPC classification number: G01S3/14 ,  G01S3/06 ,  G01S3/36 ,  G01S7/021

Abstract: Characterizing a radiation pattern of an antenna, accurately, is needed to improve the determination of an angle arrival of a radar signal received by the antenna. Accordingly, an optimized monotonic fitting approach with corresponding method and system are provided. The approach represents an approximation of the radiation pattern as a window map having a plurality of windows. The approach finds an optimized monotonic fit of the radiation pattern by adjusting the window map, one window at a time, and testing the resulting new approximations. The approach tests whether a new approximation is a better fit then the other approximations, is monotonic, and has a minimum slope. The approach enforces monotonicity and a minimum slope for ambiguity resolution. The approach further includes calculating an angle arrival of the radar signal based on the optimized monotonic fit.

Abstract translation: 需要精确地表征天线的辐射图，以改善由天线接收的雷达信号的角度到达的确定。 因此，提供了一种具有相应方法和系统的优化单调拟合方法。 该方法表示作为具有多个窗口的窗口图的辐射图案的近似。 该方法通过调整窗口图，一次一个窗口并测试所得到的新近似值，找到辐射图案的优化单调拟合。 该方法测试新近似值是否更好拟合，然后其他近似值是单调的，并具有最小斜率。 该方法强制单调性和模糊度分辨率的最小斜率。 该方法还包括基于优化的单调拟合计算雷达信号的角度到达。

公开(公告)号：US07248218B2

公开(公告)日：2007-07-24

申请号：US11146647

申请日：2005-06-07

Applicant: Andreas Schmid ,  André Neubauer

Inventor： Andreas Schmid ,  André Neubauer

IPC: G01S3/02

CPC classification number: G01S19/42 ,  G01S3/06 ,  G01S19/22 ,  G01S19/23 ,  G01S19/428

Abstract: In order to improve the reliability and the accuracy of a position-finding method such as the GPS method, the quality of a radio link which is used for the position-finding method is determined by estimating a parameter, in particular the Rice factor of the amplitude distribution density, which is characteristic of the ratio of the strength of a signal transmitted via a line-of-sight path, with respect to the strength of the signals transmitted via non-line-of-sight paths.

Abstract translation: 为了提高诸如GPS方法的定位方法的可靠性和准确性，用于定位方法的无线电链路的质量通过估计参数来确定，特别是通过估计 幅度分布密度，其是通过视线路径传输的信号的强度的比率的特征，相对于通过非视距路径传输的信号的强度。

公开(公告)号：US20060249297A1

公开(公告)日：2006-11-09

申请号：US11373826

申请日：2006-03-09

Applicant: Hakim Janah ,  Pierre Mirebeau ,  Josef Cardinaels ,  Francois Gahungu ,  Jerome Matallana

Inventor： Hakim Janah ,  Pierre Mirebeau ,  Josef Cardinaels ,  Francois Gahungu ,  Jerome Matallana

IPC: H02G15/00

CPC classification number: H02G15/184 ,  G01S3/06 ,  G01S3/781 ,  H02G15/068 ,  H02G15/188

Abstract: The invention relates to a synthetic material end for a DC electric cable. In the invention, the synthetic material end includes a composite insert that is placed between the inner insulator and the outer insulating sleeve of the cable, the insert generally being in the form of a sheath surrounding the inner insulator over a partially-stripped portion of the cable, and being made up of a resistive portion of high resistivity, and of a semi-conductive portion of lower resistivity, the interface between said resistive and semi-conductive portions forming a deflector, the end of the resistive portion that is remote from the deflector being electrically connected to the central conductor of the cable, and the end of the semi-conductive portion that is remote from the deflector being electrically connected to the outer semi-conductor of the cable. Application to making connections to high-voltage electric cables.

公开(公告)号：US06587078B1

公开(公告)日：2003-07-01

申请号：US10123947

申请日：2002-04-17

Applicant: James H. Doty

Inventor： James H. Doty

IPC: G01S328

CPC classification number: G01S19/21 ,  F41G7/305 ,  F42B15/01 ,  G01S3/06

Abstract: An interference-aided signal acquisition and tracking system with temporal beam forming for a rotating vehicle enhances signal to noise ratio using interference or jamming signals. An antenna receives interference signals and desired navigation signals. A RF processing function connected to the antenna processes the received interference signals and the desired navigation signals into IF signals. An A/D converter connected to the RF processing function digitizes the interference signals and desired navigation signals and provides a digitized IF signal. A tracking filter tracks amplitude variations of the interference signals and provides a rotation angle estimate signal of the rotating vehicle. A signal modulation function connected to the tracking filter and the A/D converter varies gain of the IF signal to enhance the signal to noise ratio.

Abstract translation: 用于旋转车辆的具有时间波束形成的干扰辅助信号采集和跟踪系统使用干扰或干扰信号来增强信噪比。 天线接收干扰信号和期望的导航信号。 连接到天线的RF处理功能将接收的干扰信号和期望的导航信号处理成IF信号。 连接到RF处理功能的A / D转换器将干扰信号和期望的导航信号数字化并提供数字化的IF信号。 跟踪滤波器跟踪干扰信号的振幅变化并提供旋转车辆的旋转角度估计信号。 连接到跟踪滤波器和A / D转换器的信号调制功能改变IF信号的增益以增强信噪比。

公开(公告)号：US06456956B1

公开(公告)日：2002-09-24

申请号：US09393050

申请日：1999-09-09

Applicant: Li Xiong

Inventor： Li Xiong

IPC: G01C322

CPC classification number: G01S5/0215 ,  G01S3/06 ,  G01S5/04

Abstract: A method of estimating the position of a transmitter using angle-of-arrival values determined at each of a plurality of base stations. The method includes calculating a position estimation using the angle-of-arrival values from all of the base stations, calculating an error at each of the base station, and removing those base stations whose error exceeds a threshold from the calculation.

Abstract translation: 一种使用在多个基站中的每一个确定的到达到达值估计发射机的位置的方法。 该方法包括使用来自所有基站的到达角值计算位置估计，计算每个基站处的误差，以及从计算中去除其误差超过阈值的那些基站。

公开(公告)号：US06392594B1

公开(公告)日：2002-05-21

申请号：US09399740

申请日：1999-09-20

Applicant: Toshihiro Sezai

Inventor： Toshihiro Sezai

IPC: H01Q300

CPC classification number: G01S7/2813 ,  G01S3/06 ,  G01S7/288 ,  G01S2007/2883

Abstract: Provided herein is a radio wave receiving apparatus including a signal processing circuit comprising: a means for the Fourier transform in respect of azimuth of an electric field signal outputted from an antenna receiving circuit; a means for the Fourier transform in respect of azimuth of the antenna pattern of an antenna; a means for dividing the Fourier transform signal derived from the electric field signal by the antenna pattern Fourier transform signal; a low-pass filter for subjecting the divided signal to low-pass filtering; a means for extracting exponential function components of the output signal of the low-pass filter; a means for extending the band of the output signal of the low-pass filter beyond the cut-off frequency of the low-pass filter by using the exponential function components; and a means for subjecting the band-extended signal to Fourier inverse transform in respect of azimuth, the signal after the Fourier inverse transform being outputted as a final antenna output. The antenna resolution thereof is improved by thus using a transfer function in the azimuthal frequency domain resulting from the Fourier transform in respect of azimuth of the antenna pattern.

Abstract translation: 本发明提供一种无线电波接收装置，包括：信号处理电路，包括：用于对从天线接收电路输出的电场信号的方位角进行傅里叶变换的装置; 关于天线的天线方向图的方位角进行傅立叶变换的装置; 用于将由电场信号导出的傅里叶变换信号除以天线图案傅里叶变换信号的装置; 用于对分频信号进行低通滤波的低通滤波器; 用于提取低通滤波器的输出信号的指数函数分量的装置; 通过使用指数函数分量将低通滤波器的输出信号的频带扩展到低通滤波器的截止频率的装置; 以及用于使频带扩展信号相对于方位进行傅立叶逆变换的装置，将作为最终天线输出的傅里叶逆变换之后的信号输出。 因此，通过利用由天线方向图的傅里叶变换得到的方位角频域的传递函数来改善其天线分辨率。

公开(公告)号：US06195043B1

公开(公告)日：2001-02-27

申请号：US09311139

申请日：1999-05-13

Applicant: Teodoro Azzarelli ,  Paul Kwon ,  Ephraim Mendelovicz

Inventor： Teodoro Azzarelli ,  Paul Kwon ,  Ephraim Mendelovicz

IPC: H01Q2106

CPC classification number: G01S3/46 ,  G01S3/06 ,  H01Q21/205 ,  H01Q25/00

Abstract: An apparatus and method for determining the angles-of-arrival and the polarization states of incoming RF signals of unknown polarization using five or more RF sensing antenna elements of differing yet known orientations of polarization. The apparatus includes an array of broad gain, substantially identical, RF sensing antenna elements of differing yet known orientations of polarization, an antenna element selection network, RF receiver channels, processing means for determining uncorrected phase differences from received RF signal phases for pairs of antennas, processing means for determining received signal powers, processing means for determining from RF signal powers corrections to the phase difference errors caused by polarization diversity between pairs of antennas, processing means for correcting uncorrected phase differences with determined phase difference corrections, processing means for determining incoming RF signal frequencies, processing means for determining ambiguous and unambiguous angles-of-arrival of incoming RF signals and processing means for determining the polarization states of incoming RF signals.

Abstract translation: 一种使用五个或更多个不同但已知的偏振取向的RF感测天线元件来确定未知偏振的输入RF信号的到达角和偏振态的装置和方法。 该装置包括具有不同但已知的偏振取向的广泛增益，基本相同的RF感测天线元件的阵列，天线元件选择网络，RF接收器通道，用于从接收的用于天线对的天线的RF信号相位确定未校正的相位差的处理装置 用于确定接收信号功率的处理装置，用于根据由天线对之间的极化分集引起的相位差误差的RF信号功率进行确定的处理装置，用已确定的相位差校正校正未校正的相位差的处理装置，用于确定输入的处理装置 RF信号频率，用于确定输入RF信号的到达不明确和明确的角度的处理装置和用于确定输入RF信号的偏振状态的处理装置。

公开(公告)号：US5936575A

公开(公告)日：1999-08-10

申请号：US23381

申请日：1998-02-13

Applicant: Teodoro Azzarelli ,  Ephraim Mendelovicz

Inventor： Teodoro Azzarelli ,  Ephraim Mendelovicz

IPC: G01S3/06 ,  G01S3/48 ,  H01Q3/26 ,  H01Q21/24 ,  H01Q21/06

CPC classification number: G01S3/06 ,  G01S3/48 ,  H01Q21/24 ,  H01Q3/26

Abstract: An apparatus and method for determining the angles-of-arrival and the polarization states of incoming RF signals of unknown polarization using three or more RF sensing antenna elements of differing yet known orientations of polarization. The apparatus includes an array of broad gain, substantially identical, RF sensing antenna elements of differing yet known orientations of polarization, an antenna element selection network, RF receiver channels, processing means for determining uncorrected phase differences from received RF signal phases for pairs of antennas, processing means for determining received signal powers, processing means for determining from RF signal powers corrections to the phase difference errors caused by polarization diversity between pairs of antennas, processing means for correcting uncorrected phase differences with determined phase difference corrections, processing means for determining incoming RF signal frequencies, processing means for determining ambiguous and unambiguous angles-of-arrival of incoming RF signals and processing means for determining the polarization states of incoming RF signals.

Abstract translation: 一种用于使用三个或更多个不同但已知的偏振取向的RF感测天线元件来确定未知偏振的输入RF信号的到达角和偏振状态的装置和方法。 该装置包括具有不同但已知的偏振取向的广泛增益，基本相同的RF感测天线元件的阵列，天线元件选择网络，RF接收器通道，用于从接收的用于天线对的天线的RF信号相位确定未校正的相位差的处理装置 用于确定接收信号功率的处理装置，用于根据由天线对之间的极化分集引起的相位差误差的RF信号功率进行确定的处理装置，用已确定的相位差校正校正未校正的相位差的处理装置，用于确定输入的处理装置 RF信号频率，用于确定输入RF信号的到达不明确和明确的角度的处理装置和用于确定输入RF信号的偏振状态的处理装置。

公开(公告)号：US5907303A

公开(公告)日：1999-05-25

申请号：US873705

申请日：1997-06-12

Applicant: Hideki Yukitomo ,  Mitsuru Uesugi ,  Katsuhiko Hiramatsu

Inventor： Hideki Yukitomo ,  Mitsuru Uesugi ,  Katsuhiko Hiramatsu

IPC: H04L27/22 ,  G01S3/02 ,  G01S3/06 ,  H01Q3/26 ,  H04B7/005 ,  H04B7/08 ,  H04L1/02 ,  G01S3/16

CPC classification number: H01Q3/2605 ,  G01S3/06 ,  H04B7/0845 ,  G01S3/023

Abstract: A CMA-based antenna system is disclosed which shows an improved receiving performance by reducing phase differences in the received signals which have been weighted. The CMA-based antenna system comprises a plurality of antenna, weight circuits, an adder, an error detector and a synthesis controller. The synthesis controller controls the weight circuits so as not only to make the adder output at a preset level but also to cause any differences among the weight circuit outputs not to increase. In order to cope with an error of symbol synchronization and a delayed wave, the CMA-based antenna system may further have a kind of equalizer inserted before the weight circuit in each antenna circuit.

Abstract translation: 公开了一种基于CMA的天线系统，其通过减少已经被加权的接收信号中的相位差来显示改进的接收性能。 基于CMA的天线系统包括多个天线，加权电路，加法器，误差检测器和综合控制器。 合成控制器控制加权电路，不仅使加法器的输出处于预设电平，而且也使得加权电路输出之间的任何差异不增加。 为了应对符号同步和延迟波的误差，基于CMA的天线系统还可以在每个天线电路中的加权电路之前进一步插入一种均衡器。