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公开(公告)号：US5505555A
公开(公告)日：1996-04-09
申请号：US470117
申请日：1995-06-06
CPC分类号： G01V7/10 , G01V7/08 , Y10T403/45 , Y10T403/54
摘要： A flexural pivot bearing includes a pair of members with opposed close-spaced faces which are joined by a web (29), of microscopic thickness, in a plane intersecting the faces. These members and the web are comprised of an integral body (27) of substantially uniform material, and the members are adapted for pivoted mutual flexure about a pivot axis aligned along the web.
摘要翻译： 弯曲枢转轴承包括具有相对的紧密间隔面的一对构件，其在与面相交的平面中由微细厚度的腹板（29）连接。 这些构件和腹板由基本上均匀的材料的整体（27）组成，并且构件适于围绕沿着腹板对齐的枢转轴线枢转相互弯曲。
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公开(公告)号：US5333129A
公开(公告)日：1994-07-26
申请号：US12894
申请日：1993-02-03
CPC分类号： G01S3/802 , G01S15/00 , G01S15/003 , G01S15/89
摘要： An array of acoustic sensors is positioned near the object to be imaged so that an array of detection beams impinge upon the surface of the object. The ambient noise in the ocean which is generated by both natural and manmade phenomena is reflected off of the target object and collected by the acoustic sensors. Each beam corresponds to a single pixel of an image of the object. The amplitude and frequency differences between the signals derived from each beam permit contrast to be developed between the pixels so that an image is formed. A first embodiment utilizes a parabolic or spherical reflector to focus the noise reflected from the object onto one or more sensors. A two dimensional array of sensors is required to produce an image. A second embodiment uses a phased array of acoustic sensors to form an image, with the phased array of sensors being used to generate a large number of scanned beams, each beam corresponding to one pixel of the image. Motion pictures can be generated by updating the image formed by the a multi-sensor array at a pre-determined frequency. "Acoustic color" can be identified by frequency information contained in the noise spectrum.
摘要翻译： 一组声学传感器位于待成像对象附近，使得一组检测光束撞击物体的表面。 由自然现象和人造现象产生的海洋环境噪声都被目标物体反射并被声传感器收集。 每个光束对应于对象的图像的单个像素。 从每个光束导出的信号之间的幅度和频率差允许在像素之间形成对比度，从而形成图像。 第一实施例利用抛物面或球面反射器将从物体反射的噪声聚焦到一个或多个传感器上。 需要二维数组的传感器来产生图像。 第二实施例使用相位阵列的声传感器来形成图像，其中相控阵的传感器用于产生大量扫描光束，每个光束对应于图像的一个像素。 可以通过以预定频率更新由多传感器阵列形成的图像来生成运动图像。 “声音颜色”可以通过包含在噪声谱中的频率信息来识别。
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