公开(公告)号：US09423495B1

公开(公告)日：2016-08-23

申请号：US14185219

申请日：2014-02-20

Applicant: Raytheon Company

Inventor： Kaichiang Chang ,  Drew S. Ganter ,  Michael Anderson

IPC: G01S13/04 ,  G01S13/90 ,  H01Q7/00 ,  H01Q1/34 ,  H01Q11/10

CPC classification number: H01Q11/10 ,  G01S7/024 ,  G01S7/42 ,  G01S13/0218 ,  G01S13/90 ,  G01S2013/0227 ,  H01Q1/34 ,  H01Q7/00

Abstract: A ship-based over-the-horizon (OTH) radar system provides mobile, persistent, wide-area air and ship surveillance across large ocean expanses and in anti-access/area denial (A2AD) environments. A transmit ship may include a log-periodic antenna (LPA) array adapted for use on a ship and a receive ship may include a plurality of monopole or dipole whip antennas. The transmit/receive antenna is fronted by a ground screen, which can be sized taking into account the sea as a naturally reflective surface. The transmit/receive ship can include advanced software to compensate for ship movement and synthetic aperture radar (SAR) techniques can be employed to includes the effective size of the radar receiver aperture. A modular design, using standard commercial container ships and shipping containers, allows for rapid deployment/stowage of radar equipment. Related methods are also described.

Abstract translation: 基于船舶的超视距（OTH）雷达系统为大型海洋广播和反接入/区域拒绝（A2AD）环境提供移动，持续，广泛的空中和船舶监视。 发射船可以包括适于在船上使用的对数周期性天线（LPA）阵列，并且接收船可以包括多个单极或偶极鞭状天线。 发射/接收天线由接地屏幕前面，其可以考虑海洋的大小作为自然反射表面。 发射/接收船舶可以包括用于补偿船舶运动的先进软件，并且可以采用合成孔径雷达（SAR）技术来包括雷达接收器孔径的有效尺寸。 使用标准商业集装箱船和集装箱的模块化设计，可以快速部署/装载雷达设备。 还描述了相关方法。

公开(公告)号：US09373888B1

公开(公告)日：2016-06-21

申请号：US13945197

申请日：2013-07-18

Applicant: Raytheon Company

Inventor： Jack J. Schuss ,  Kaichiang Chang ,  Jeffrey C. Upton

IPC: H01Q3/00 ,  H01Q3/26

CPC classification number: H01Q21/005

Abstract: Methods and apparatus for a phased array radar system including an array comprising columns of super-elements containing radiator elements located along a length of the super-element, wherein the super-elements form the columns such that super-elements are arranged end-to-end, wherein the super-elements are arranged in the column at randomized locations to reduce sidelobes. In a further embodiment, super element lengths can be randomized.

Abstract translation: 一种相控阵列雷达系统的方法和装置，包括阵列，该阵列包括沿着超级元件的长度定位的包含辐射元件的超级元件列，其中超级元件形成列，使得超级元件被端对端布置， 其中超级元件在随机位置排列在列中以减少旁瓣。 在另一实施例中，超级元件长度可以被随机化。

公开(公告)号：US09891310B2

公开(公告)日：2018-02-13

申请号：US14677580

申请日：2015-04-02

Applicant: Raytheon Company

Inventor： Kaichiang Chang ,  Yong Liu ,  David R. Schmidt ,  Stephen M. Sparagna ,  Frederic C. Stevens, IV

IPC: G01S13/72 ,  G01S13/44 ,  H01Q25/02 ,  H01Q21/06 ,  G01S7/03 ,  G01S13/02

CPC classification number: G01S13/72 ,  G01S7/03 ,  G01S13/4463 ,  G01S2013/0254 ,  H01Q21/061 ,  H01Q25/02

Abstract: A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.

公开(公告)号：US20160291144A1

公开(公告)日：2016-10-06

申请号：US14677580

申请日：2015-04-02

Applicant: Raytheon Company

Inventor： Kaichiang Chang ,  Yong Liu ,  David R. Schmidt ,  Stephen M. Sparagna ,  Frederic C. Stevens, IV

IPC: G01S13/72 ,  G01S13/44 ,  G01S7/282 ,  H01Q3/24

CPC classification number: G01S13/72 ,  G01S7/03 ,  G01S13/4463 ,  G01S2013/0254 ,  H01Q21/061 ,  H01Q25/02

Abstract: A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam, cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.

Abstract translation: 在搜索和跟踪操作期间，雷达系统使用多波束最大似然估计（MLE）。 在搜索期间，可以使用四光束连续光束，聚类来搜索感兴趣区域中的目标。 在跟踪期间，可以使用三光束三元组来跟踪一个或多个检测到的目标。 在一些实施例中，波束选择器开关可以用于允许两个偏移接收波束来共享波束形成器输出端口以生成四个波束顺序簇。