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Millimeter-wave imaging system with 360 degrees field of view

机译:具有360度视场的毫米波成像系统

摘要

A passive millimeter-wave imaging system (10) is disclosed that provides a full 360° instantaneous azimuthal field-of-view (54) image of a scene. The imaging system (10) makes use of a spherical Luneburg lens (12) and a series of millimeter-wave direct detection receivers (24) configured in a ring (16) around the lens (12), and positioned at the focal plane of the lens (12). The series of receivers (24) are positioned on a plurality of consecutive sensor cards (14), where each card (14) includes a certain number of the receivers (24). The receivers (24) define a one-dimensional focal plane array with limited obscuration, and thus give a 360° instantaneous field-of-view (54) of a slice of the scene. Processing circuitry (32), including a multiplexing array interface for multiplexing the signals from the receivers (24), are positioned on an outer ring (34) outside of the sensor card ring (16). Mechanical actuators (42) are provided to cause the rings (16, 34) to move together in a precessional motion about the lens (12) so that the rings (16, 34) precess at a fixed angle &THgr; about a fixed reference direction (46), thus providing an elevational scan of +/−&THgr; about the plane perpendicular to the reference direction (46).
机译:公开了一种无源毫米波成像系统( 10 ),该系统可提供完整的360°成像。场景的瞬时方位角( 54 )图像。成像系统( 10 )使用球面Luneburg透镜( 12 )和一系列毫米波直接检测接收器( 24 )配置为围绕镜头( 12 )的环( 16 ),并位于镜头( 12 )的焦平面处。一系列接收器( 24 )放置在多个连续的传感器卡( 14 )上,其中每个卡( 14 )包括一个接收者数( 24 )。接收器( 24 )定义了具有有限遮盖力的一维焦平面阵列,因此可提供360°的焦平面。场景切片的瞬时视场( 54 )。处理电路( 32 )包括一个用于对接收器( 24 )的信号进行复用的复用阵列接口,位于外环( 34 >)在传感器卡环( 16 )的外部。提供机械致动器( 42 ),以使环( 16、34 )围绕镜头( 12 )进动运动。使环( 16、34 )以固定角度&THgr;进动。大约固定参考方向( 46 ),从而提供+ /−&THgr;垂直于参考方向( 46 )的平面。

著录项

  • 公开/公告号EP0966060B1

    专利类型

  • 公开/公告日2002-08-14

    原文格式PDF

  • 申请/专利权人 TRW INC;

    申请/专利号EP19990107893

  • 发明设计人 SHOUCRI MERIT M.;SAMEC THOMAS K.;

    申请日1999-04-21

  • 分类号H01Q19/06;G01S7/40;

  • 国家 EP

  • 入库时间 2022-08-22 00:35:26

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