公开(公告)号：US06404379B1

公开(公告)日：2002-06-11

申请号：US09607004

申请日：2000-06-29

申请人： Kai-Bor Yu ,  Yibin Zheng

发明人： Kai-Bor Yu ,  Yibin Zheng

IPC分类号： G01S1344

CPC分类号： G01S13/44 ,  G01S13/4418

摘要： A method and system for identifying the locations of plural targets lying within a main beam of a monopulse antenna including four ports for generating sum, elevation difference, azimuth difference and double difference signals. The method comprises the steps of forming a monopulse ratio matrix from the sum, elevation difference, azimuth difference and double difference signals; and determining eigenvalues of the monopulse ratio matrix. These eigenvalues are then used to determine the angular locations of the plural targets. Preferably, the eigenvalues are determined by performing an eigenvalue decomposition of the monopulse ratio matrix to generate eigenvalues, and the angles of the targets may be determined from the eigenvalues by the use of a look-up table.

摘要翻译： 一种用于识别位于单脉冲天线的主波束内的多个目标的位置的方法和系统，包括用于产生和，高程差，方位角差和双差信号的四个端口。 该方法包括从和，高程差，方位差和双差信号形成单脉冲比矩阵的步骤; 并确定单脉冲比矩阵的特征值。 然后将这些特征值用于确定多个目标的角位置。 优选地，通过执行单脉冲比矩阵的特征值分解来确定特征值以产生特征值，并且可以通过使用查找表从特征值确定目标的角度。

公开(公告)号：US06356231B1

公开(公告)日：2002-03-12

申请号：US09607146

申请日：2000-06-29

申请人： Yibin Zheng ,  Kai-Bor Yu

发明人： Yibin Zheng ,  Kai-Bor Yu

IPC分类号： G01S1344

CPC分类号： G01S13/44 ,  G01S3/32 ,  G01S13/4427

摘要： A method and system for identifying the locations of plural targets lying within the main beam of a monopulse antenna including four ports for generating sum, elevation difference, azimuth difference, and double difference signals. The method comprises the steps of processing the sum, elevation difference, azimuth difference, and double difference signals in accordance with a series of linear equations to obtain a set of intermediate values; and processing the set of intermediate values in accordance with a set of algebraic equations to obtain signals representing an angular direction of each of the plural targets. Preferably, the method further includes the step of processing the sum, elevation difference, azimuth difference and double difference signals and the signals representing the angular directions of the targets according to a further set of algebraic equations to obtain signals representing the amplitude of the beam reflected from each of the targets. Also, in a preferred embodiment, the signals representing the angular direction of the targets include signals representing, for each of the targets, an angular direction of the target in an x-plane, and an angular direction of the target in a y-plane.

摘要翻译： 用于识别位于单脉冲天线主波束内的多个目标的位置的方法和系统，包括用于产生和，高程差，方位角差和双差信号的四个端口。 该方法包括根据一系列线性方程处理和，高程差，方位差和双差信号以获得一组中间值的步骤; 以及根据一组代数方程式处理所述一组中间值以获得表示所述多个目标中的每一个的角度方向的信号。 优选地，该方法还包括根据另一组代数方程来处理和，高程差，方位差和双差信号以及表示目标的角方向的信号的步骤，以获得表示反射的波束的幅度的信号 从每个目标。 此外，在优选实施例中，表示目标的角度方向的信号包括针对每个目标的x平面中的目标的角度方向和在y平面中的目标的角度方向的信号 。

公开(公告)号：US06246365B1

公开(公告)日：2001-06-12

申请号：US09267642

申请日：1999-03-15

申请人： Setsuo Tokoro

发明人： Setsuo Tokoro

IPC分类号： G01S1344

CPC分类号： G01S13/42 ,  G01S13/424 ,  G01S13/44 ,  G01S13/4463

摘要： A radar apparatus comprising: a receiving antenna having an array antenna in which a plurality of antenna elements are arrayed in a horizontal direction; and a signal processing section for carrying out recognition of a target existing in a predetermined horizontal bearing range from receive signals received by the receiving antenna, by electrically carrying out horizontal scanning of an antenna pattern of the receiving antenna, wherein at least one of the antenna elements is placed with a shift in a vertical direction, and wherein the signal processing section detects an altitudinal bearing of the target by a monopulse method by use of a receive signal from the antenna element with the shift in the vertical direction.

摘要翻译： 一种雷达装置，包括：具有阵列天线的接收天线，其中多个天线元件沿水平方向排列; 信号处理部分，通过电接收天线的天线方向图的水平扫描，对接收天线接收的接收信号进行预定的水平方位范围内的目标的识别，其中至少一个天线 元件沿垂直方向移动，并且其中信号处理部分通过使用来自天线元件的接收信号以垂直方向的偏移通过单脉冲方法检测目标的高度方位。

公开(公告)号：US06819285B1

公开(公告)日：2004-11-16

申请号：US10770920

申请日：2004-02-03

申请人： Peter H. Stockman ,  Miroslaw T. Hepel

发明人： Peter H. Stockman ,  Miroslaw T. Hepel

IPC分类号： G01S1344

CPC分类号： G01S7/4021 ,  G01S13/426 ,  G01S13/4436 ,  G01S13/91 ,  G01S2007/2886 ,  G01S2007/406

摘要： An improved method of estimating target elevation angle for dual squinted beam radar systems is disclosed. The target's elevation angle is estimated by receiving complex I/Q data from two receive radar beams and calculating the complex ratio of the complex I/Q data. The calculated complex ratio is compared to a set of previously determined reference complex ratios in complex lookup tables that have been corelated to known target elevation angles.

摘要翻译： 公开了一种改进的双斜视雷达系统估计目标仰角的方法。 通过从两个接收雷达波束接收复数I / Q数据并计算复数I / Q数据的复数比来估计目标的仰角。 将计算的复数比率与已经被核化到已知目标仰角的复杂查找表中的一组先前确定的参考复合比进行比较。

公开(公告)号：US06801156B1

公开(公告)日：2004-10-05

申请号：US10627481

申请日：2003-07-25

申请人： Richard Wasiewicz

发明人： Richard Wasiewicz

IPC分类号： G01S1344

CPC分类号： G01S7/4052 ,  G01S13/24 ,  G01S13/44 ,  G01S2007/4082

摘要： A monopulse radar system generates elevation and azimuth difference monopulse estimates of the location of targets in each range cell, where the target may be either a single or plural target, each of which is made up of multiple scattering sources. Each azimuth-elevation estimate is based on a transmitted pulse or burst at a given frequency, different from other frequencies in a set of pulses or bursts. A test statistic is generated for each set. The statistic relates to the shape in an azimuth-elevation plane of the cluster of estimates. The test statistic is compared with a threshold to decide whether a single target or plural targets exist in the range cell.

摘要翻译： 单脉冲雷达系统产生每个范围单元中目标位置的高程和方位差单脉冲估计，其中目标可以是单个或多个目标，每个目标由多个散射源组成。 每个方位仰角估计都是基于一个给定频率的传输脉冲或脉冲串，不同于一组脉冲或脉冲串中的其他频率。 为每个集合生成测试统计量。 统计量与估计集群的方位角平面中的形状有关。 将测试统计量与阈值进行比较，以确定范围单元格中是否存在单个目标或多个目标。

公开(公告)号：US06750810B2

公开(公告)日：2004-06-15

申请号：US10385617

申请日：2003-03-12

申请人： Hiroshi Shinoda ,  Hiroshi Kondoh

发明人： Hiroshi Shinoda ,  Hiroshi Kondoh

IPC分类号： G01S1344

CPC分类号： H01Q25/002 ,  G01S3/46 ,  G01S13/003 ,  G01S13/4463 ,  G01S13/931 ,  G01S2013/9353 ,  H01Q1/3233 ,  H01Q3/2605 ,  H01Q25/02

摘要： To realize a monopulse radar system wherein the velocity of a mobile body, distance between an obstacle and the mobile body and relative velocity can be detected and simultaneously, the direction of the obstacle can be detected, in a monopulse radar system wherein an azimuth is detected depending upon amplitude difference or phase difference between signals respectively received by plural receiving antennas, an array antenna composed of plural antenna elements is used for each transmitting antenna and each receiving antenna, at least one of the transmitting antenna and the receiving antenna is provided with an antenna switch for switching an antenna beam shape to a short angle/long distance or a wide angle/short distance and a switch control device that controls the switching of the antenna switch is provided.

公开(公告)号：US06498582B1

公开(公告)日：2002-12-24

申请号：US09633298

申请日：2000-08-08

申请人： Anthony Sweeney ,  Mark A. Hebeisen ,  Andrew B. Forbes ,  Ray Gingras ,  John Toth ,  Michael J. Delcheccolo ,  George La Fave ,  Joseph Licciardello

发明人： Anthony Sweeney ,  Mark A. Hebeisen ,  Andrew B. Forbes ,  Ray Gingras ,  John Toth ,  Michael J. Delcheccolo ,  George La Fave ,  Joseph Licciardello

IPC分类号： G01S1344

CPC分类号： G01S13/44 ,  G01S7/032 ,  G01S7/4021 ,  G01S13/4409 ,  H01P1/387 ,  H01Q3/267 ,  H01Q25/02 ,  H01Q25/04 ,  H03H7/0115

摘要： A passive MMIC monopulse comparator includes a plurality of lumped element hybrids having pi and T filter structures. In one embodiment, a first hybrid receives first and second downcoverted signals and provides a first output signal to a third hybrid and second output signal to a fourth hybrid. A second hybrid receives third and fourth downconverted signals and provides respective third and fourth output signals to the third and fourth hybrids. The third hybrid provides sum and elevation channel signals and the fourth hybrid provides azimuth and G channel signals.

摘要翻译： 无源MMIC单脉冲比较器包括具有pi和T滤波器结构的多个集总元件混合器。 在一个实施例中，第一混合器接收第一和第二下变换信号，并将第一输出信号提供给第三混合和第二输出信号到第四混合。 第二混合器接收第三和第四下变频信号，并且向第三和第四混合器提供相应的第三和第四输出信号。 第三个混合提供了和和信道信号，第四个混合提供了方位角和G信道信号。