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    SYSTEM AND METHOD FOR DETECTION AND ORBIT DETERMINATION OF EARTH ORBITING OBJECTS
    3.
    发明申请
    SYSTEM AND METHOD FOR DETECTION AND ORBIT DETERMINATION OF EARTH ORBITING OBJECTS 有权
    用于检测和定位地球对象的系统和方法

    公开(公告)号：US20150355324A1

    公开(公告)日：2015-12-10

    申请号：US14693204

    申请日：2015-04-22

    申请人： Specialized Arrays, Inc.

    发明人： Kathleen Minear ,  G. Patrick Martin

    IPC分类号： G01S13/58 ,  G01S7/41

    CPC分类号： G01S13/58 ,  G01S7/411 ,  G01S13/0218 ,  G01S13/89 ,  G01S13/93 ,  G01S13/951 ,  G01S2013/0245

    摘要： A system for detection and orbit determination of Earth orbiting objects includes a first plurality of sensors including at least one first antenna. The at least one first antenna is configured to point in a stare mode to broadcast a first detection signal at an angular region centered on an equatorial plane to maximize detection of orbiting objects regardless of altitude, grade, or inclination. The first antenna may be configured to stare at a low inclination angle, and may be configured to stare at one of due east and due west along the equator.

    摘要翻译： 用于地球轨道物体的检测和轨道确定的系统包括包括至少一个第一天线的第一多个传感器。 所述至少一个第一天线被配置为指向凝视模式，以在赤道平面为中心的角度区域广播第一检测信号，以最大程度地检测轨道物体，而不管高度，等级或倾斜度如何。 第一天线可以被配置为以低倾角观察，并且可以被配置为盯着沿着赤道的正向东部和正向西部的一个。

    TIME TRANSFER METHOD AND SYSTEM
    4.
    发明申请
    TIME TRANSFER METHOD AND SYSTEM 有权
    时间转移方法和系统

    公开(公告)号：US20120098697A1

    公开(公告)日：2012-04-26

    申请号：US12911817

    申请日：2010-10-26

    申请人： Eung Gi Paek ,  Joon Y. Choe

    发明人： Eung Gi Paek ,  Joon Y. Choe

    IPC分类号： G01S7/40

    CPC分类号： G01S13/003 ,  G01S13/0218 ,  G01S13/103

    摘要： A Time Transfer Time Reverse Mirror (TT TRM) method and system includes a radio transceiver for transmitting a series of short pulses repeatedly at a period T and for receiving from a remote node a return signal that is a retransmission of the original signal at the same period T: a clock circuit for inputting a clock signal to the transceiver: and a computer for (i) computing and generating an imaginary time-reversed signal version of the original signal, (ii) comparing the return signal with the imaginary version. (iii) computing a delay between the return signal and the imaginary version that is substantially equal to twice the time difference between the two nodes, and (iv) applying the computed delay to a clock input calibration for a desired signal. The system includes time transfer using the ionospheric reflection (refraction), producing precise synchronization among remote nodes beyond the line-of-sight and thus without necessitating GPS or communication satellites.

    摘要翻译： 时间传输时间反向镜（TT TRM）方法和系统包括用于在周期T反复发射一系列短脉冲的无线电收发器，并且用于从远程节点接收作为相同原始信号的重传的返回信号 周期T：用于向收发机输入时钟信号的时钟电路;以及计算机，用于（i）计算并产生原始信号的虚拟时间反转信号版本，（ii）将返回信号与虚拟版本进行比较。 （iii）计算基本上等于两个节点之间的时间差的两倍的返回信号和虚拟版本之间的延迟，以及（iv）将所计算的延迟应用于期望信号的时钟输入校准。 该系统包括使用电离层反射（折射）的时间转移，在远程节点之间产生精确的同步，从而不需要GPS或通信卫星。

    Method for measuring surface currents using a long-range single station high frequency ground wave radar system
    5.
    发明授权
    Method for measuring surface currents using a long-range single station high frequency ground wave radar system 失效
    使用长距离单站高频地面波雷达系统测量表面电流的方法

    公开(公告)号：US07690250B2

    公开(公告)日：2010-04-06

    申请号：US12228057

    申请日：2008-08-08

    申请人： Kenneth J. Hickey

    发明人： Kenneth J. Hickey

    IPC分类号： G01P5/00

    CPC分类号： G01S13/0218 ,  G01S13/50 ,  G01S13/88

    摘要： A method for measuring ocean surface currents using a long-range single station high frequency ground wave radar system includes the steps of forming a rectilinear grid based region, dividing the rectilinear grid into a plurality of sub-regions each having a uniform surface current flow therewithin, spanning each sub-region with a predetermined plurality of radial beam lines from the single radar station, dividing each radial beam line into a pre-selected plurality of radial sub-nodes, measuring radial surface current vector projection at each radial sub-node, inputting each radial surface current vector projection into a multiple regression model having two regressors, determining, with the multiple regression model, surface vector components along each of x and y axis, storing the surface vector components determined in step (g) to a database, and editing, with equation of continuity based algorithm, plurality of surface vector components stored in the database.

    摘要翻译： 使用远程单站高频地面波雷达系统测量海洋表面电流的方法包括以下步骤：形成直线网格区域，将直线网格划分成多个子区域，每个子区域具有均匀的表面电流流动 将来自所述单个雷达站的预定多个径向波束线跨越每个子区域，将每个径向波束线划分成预先选择的多个径向子节点，测量每个径向子节点处的径向表面电流矢量投影， 将每个径向表面电流矢量投影输入具有两个回归的多元回归模型，使用多元回归模型确定沿着x和y轴中的每一个的表面向量分量，将在步骤（g）中确定的表面向量分量存储到数据库中， 并通过基于连续性的算法编辑，存储在数据库中的多个表面向量分量。

    Passive channel calibration method based on non-linear antenna array
    6.
    发明授权
    Passive channel calibration method based on non-linear antenna array 失效
    基于非线性天线阵的无源信道校准方法

    公开(公告)号：US07667639B2

    公开(公告)日：2010-02-23

    申请号：US11859746

    申请日：2007-09-22

    申请人： Feng Cheng ,  Xiongbin Wu

    发明人： Feng Cheng ,  Xiongbin Wu

    IPC分类号： G01S7/40

    CPC分类号： G01S13/0218 ,  G01S7/4004 ,  G01S13/34 ,  G01S13/536

    摘要： Taught herein is a passive channel calibration method wherein a non-linear antenna array sets an antenna array to a non-linear formation that contains at least a combination of translation invariant dual array-element couples, detects single-azimuth ocean echoes via combinations of translation invariant dual array-element couples, estimates channel amplitude mismatch coefficients via the single-azimuth ocean echoes to implement amplitude calibration, and estimates channel phase mismatch coefficients via the single-azimuth ocean echoes after amplitude calibration and the known array position information to implement phase calibration.

    摘要翻译： 本文中的教导是一种无源信道校准方法，其中非线性天线阵列将天线阵列设置为至少包含平移不变双阵列元素耦合的组合的非线性阵列，通过翻译的组合检测单方位海洋回波 不变的双阵列元素耦合，通过单方位海洋回波估计信道幅度失配系数以实现幅度校准，并且在振幅校准之后通过单方位角海洋回波估计信道相位失配系数，并且知道已知的阵列位置信息以实现相位校准 。

    PASSIVE CHANNEL CALIBRATION METHOD BASED ON NON-LINEAR ANTENNA ARRAY
    7.
    发明申请
    PASSIVE CHANNEL CALIBRATION METHOD BASED ON NON-LINEAR ANTENNA ARRAY 失效
    基于非线性天线阵列的被动通道校准方法

    公开(公告)号：US20080012753A1

    公开(公告)日：2008-01-17

    申请号：US11859746

    申请日：2007-09-22

    申请人： Feng CHENG ,  Xiongbin WU

    发明人： Feng CHENG ,  Xiongbin WU

    IPC分类号： G01S7/40

    CPC分类号： G01S13/0218 ,  G01S7/4004 ,  G01S13/34 ,  G01S13/536

    摘要： Taught herein is a passive channel calibration method wherein a non-linear antenna array sets an antenna array to a non-linear formation that contains at least a combination of translation invariant dual array-element couples, detects single-azimuth ocean echoes via combinations of translation invariant dual array-element couples, estimates channel amplitude mismatch coefficients via the single-azimuth ocean echoes to implement amplitude calibration, and estimates channel phase mismatch coefficients via the single-azimuth ocean echoes after amplitude calibration and the known array position information to implement phase calibration.

    摘要翻译： 本文中的教导是一种无源信道校准方法，其中非线性天线阵列将天线阵列设置为至少包含平移不变双阵列元素耦合的组合的非线性阵列，通过翻译的组合检测单方位海洋回波 不变的双阵列元素耦合，通过单方位海洋回波估计信道幅度失配系数以实现幅度校准，并且在振幅校准之后通过单方位角海洋回波估计信道相位失配系数，并且知道已知的阵列位置信息以实现相位校准 。

    Near-vertical incidence HF radar
    8.
    发明授权
    Near-vertical incidence HF radar 失效
    近垂直入射HF雷达

    公开(公告)号：US06831592B2

    公开(公告)日：2004-12-14

    申请号：US10332273

    申请日：2003-01-07

    申请人： Kenneth H Perry

    发明人： Kenneth H Perry

    IPC分类号： G01S728

    CPC分类号： G01S13/0218

    摘要： An HF radar system comprises a transmitting system, a receiving system, a signal processing system and a frequency management/ionospheric sounding system. The transmitting system comprises a transmitting antenna array configured to transmit a beam in a near vertical direction and a transmitting device arranged to drive the transmitting antenna array at frequencies suitable for downward refraction by the ionosphere. The receiving system comprises a receiving antenna array configured to receive returning signals from a target area returning to the receiving antenna array via refraction at the ionosphere. The signal processing system comprises a digital data processing system. The frequency management/sounding system comprises cooperating transmitting and receiving systems sending HF signals to the ionosphere and analysing the returning signals. Alternatively, the system may have a duplexed antenna array. The receiving system includes means to discriminate the returning signal produced by a helicopter, other aircraft or surface vessels.

    摘要翻译： HF雷达系统包括发射系统，接收系统，信号处理系统和频率管理/电离层探测系统。 发射系统包括发射天线阵列，其被配置为在近垂直方向上发射波束，发射装置被布置成以适于电离层向下折射的频率驱动发射天线阵列。 接收系统包括接收天线阵列，其被配置为从经由电离层的折射返回到接收天线阵列的目标区域接收返回信号。 信号处理系统包括数字数据处理系统。 频率管理/发声系统包括将HF信号发送到电离层的合作发射和接收系统，并分析返回信号。 或者，系统可以具有双工天线阵列。 接收系统包括用于区分由直升机，其他飞机或水面船只产生的返回信号的装置。

    Method of sounding a channel
    10.
    发明授权
    Method of sounding a channel 失效
    发声通道的方法

    公开(公告)号：US5608408A

    公开(公告)日：1997-03-04

    申请号：US553502

    申请日：1996-02-16

    申请人： Julien Caratori ,  Claude Goutelard

    发明人： Julien Caratori ,  Claude Goutelard

    IPC分类号： G01S7/292 ,  G01S13/02 ,  G01S7/295

    CPC分类号： G01S13/0218 ,  G01S7/2927

    摘要： To reduce emission power, the sounding of a channel comprises a space-of-change transformation of M columns with N initial samples having equal time ranks in the last N impulse responses of a sounding signal received via the channel to produce a transformed matrix, an association with the transformed matrix a matrix of binary elements depending on respective moduli of the samples in the transformed matrix in comparison with a threshold, a spatial filtering of the matrix of binary elements to produce a filtered matrix in which each binary element represents the presence or the absence of the sounding signal in the associated initial sample, and a calculation of an impulse response on the basis only of transformed samples associated with binary elements from the filtered matrix having states representative of the presence of the sounding signal.

    摘要翻译： PCT No.PCT / FR95 / 00314 Sec。 371日期1996年2月16日 102（e）日期1996年2月16日PCT提交1995年3月15日PCT公布。 公开号WO95 / 27220 PCT 日期1995年10月12日为了减少发射功率，信道的探测包括在通过信道接收的探测信号的最后N个脉冲响应中具有相同时间等级的N个初始样本的M个列的变化空间变换，以产生 变换矩阵，与变换矩阵的关联，取决于与阈值相比的变换矩阵中的样本的相应模数的二进制元素的矩阵，二进制元素的矩阵的空间滤波以产生滤波矩阵，其中每个二进制 元素表示相关联的初始样本中的探测信号的存在或不存在，以及仅基于具有表示存在探测信号的状态的滤波矩阵的与二进制元素相关联的变换样本的脉冲响应的计算。