Optic bundle towed array
    1.
    发明授权
    Optic bundle towed array 失效
    光束捆扎阵列

    公开(公告)号:US5625605A

    公开(公告)日:1997-04-29

    申请号:US531794

    申请日:1983-09-13

    摘要: A fiber optic bundle towed line array having a central strength member and plurality of longitudinal optical fibers spaced around the bundle near the array outer circumference. Each fiber has at least one in-line intensity modulated optical fiber hydrophone inserted at different preselected locations therealong. Patting material is molded around and embeds the optical fibers and the strength member so as to form a small diameter integral array unit.

    摘要翻译: 一种光纤束牵引线阵列,其具有中心强度构件和在阵列外周附近围绕束隔开的多个纵向光纤。 每个光纤具有至少一个在线强度调制的光纤水听器插入到不同的预选位置。 贴合材料在其周围模制并嵌入光纤和强度构件以形成小直径的整体阵列单元。

    Dual-frequency sonar system
    2.
    发明授权
    Dual-frequency sonar system 失效
    双频声纳系统

    公开(公告)号:US5367501A

    公开(公告)日:1994-11-22

    申请号:US001978

    申请日:1993-01-08

    IPC分类号: B06B1/06 G10K11/00 H04R17/00

    摘要: A dual frequency, polymer hydrophone, array for a submersible vehicle is closed. A mid-frequency transducer array is employed in the forward end of a submersible vehicle. Between the mid-frequency array and a nose portion of the submersible vehicle is a single or multiple board piezoelectric polymer array employed to implement a secondary, high-frequency transducer array. Amplifying and signal conditioning units are mounted adjacent or on one metallic electrode layer or formed integrally thereon to minimize signal lead loss. The piezoelectric polymer material is chosen to have a density coefficient and sound velocity substantially equivalent to an acoustic window in the nose portion of the submersible vehicle and to be substantially transparent to the mid-frequency array. Minimal degradation of the mid-frequency received or transmitted signals occurs due to the transparency of the high-frequency array. Benefits of the present invention include providing wide area search capability with the mid-frequency array and high-resolution homing and object classification, among other things, with the high-frequency transducer array.

    摘要翻译: 公开了一种用于潜水车辆的双频,聚合物水听器阵列。 在潜水车辆的前端使用中频换能器阵列。 在中频阵列和潜水车辆的鼻部之间是用于实现次级高频换能器阵列的单板或多板压电聚合物阵列。 放大和信号调理单元安装在一个金属电极层上或在其上一体形成,以最小化信号引线损耗。 选择压电聚合物材料具有基本上等同于潜水车辆的鼻部中的声窗的密度系数和声速,并且对于中频阵列基本上是透明的。 由于高频阵列的透明度,发生中频接收或发射信号的最小衰减。 本发明的优点包括提供具有中频阵列和高分辨率归位和对象分类的广域搜索能力,其中包括高频换能器阵列。

    Method of increasing the filling capacity of shredded tobacco tissue
    3.
    发明授权
    Method of increasing the filling capacity of shredded tobacco tissue 失效
    增加切丝烟草组织的填充能力的方法

    公开(公告)号:US4040431A

    公开(公告)日:1977-08-09

    申请号:US610736

    申请日:1975-09-05

    IPC分类号: A24B3/18

    CPC分类号: A24B3/18

    摘要: The filling capacity of shredded tobacco tissue is increased by being first conditioned by treating the tobacco to raise its temperature to at least about 130.degree. F. and its moisture content above about 15% and then hot-gas drying the tobacco in the form of a thin laminar dispersion, about 1 inch thick, in the gas at a temperature such that the moisture content of the tobacco will be lowered within about 5 seconds to the optimum moisture content to maintain improved filling capacity in the tobacco end products made from such material.

    摘要翻译: 通过首先通过处理烟草将其温度升高至至少约130°F并且其水分含量高于约15%,然后以烟草的形式热风干燥烟草,从而增加烟丝组织的填充能力 大约1英寸厚的薄层状分散体,其温度应使得烟草的水分含量在约5秒内降至最佳水分含量,以保持由这种材料制成的烟草末端产品的改善的填充能力。

    Apparatus for total blend expansion
    5.
    发明授权
    Apparatus for total blend expansion 失效
    用于总混合膨胀的装置

    公开(公告)号:US4044780A

    公开(公告)日:1977-08-30

    申请号:US610740

    申请日:1975-09-05

    申请人: James G. Kelly

    发明人: James G. Kelly

    IPC分类号: A24B3/18

    CPC分类号: A24B3/182

    摘要: Apparatus for increasing the filling capacity of a total blend of cut tobacco comprising first unit for elevating the temperature and moisture content of the tobacco such that the heating and moisturizing are performed for a time sufficient to permit cut tobacco to open from its crimped and compressed condition, an assembly for forming a relatively thin dispersion of the opened tobacco in a gas, and an apparatus operatively connected to said first unit for rapidly lowering the moisture content of the thin dispersion of tobacco to about its making moisture within about five seconds such that the tobacco has achieved an expanded and opened condition.

    摘要翻译: 包括用于提高烟草的温度和水分含量的第一单元的总烟草混合物的填充能力的装置,使得加热和保湿进行足以允许烟丝从卷曲和压缩状态打开的时间 ,用于在气体中形成开放的烟草的相对薄的分散体的组件,以及可操作地连接到所述第一单元的装置,用于在约5秒内将烟草的薄分散体的水分含量快速降低至约其水分,使得 烟草已经实现了扩大和开放的条件。

    Method of acoustic processing for acoustic image classification
    6.
    发明授权
    Method of acoustic processing for acoustic image classification 失效
    声像分类声学处理方法

    公开(公告)号:US5111438A

    公开(公告)日:1992-05-05

    申请号:US783665

    申请日:1991-10-28

    IPC分类号: G01S7/539 G06K9/32

    CPC分类号: G01S7/539 G06K9/3241

    摘要: A method of acoustic processing for acoustic image classification of an underwater target from a set of known target hypotheses is provided. An acoustic waveform is transmitted into a test volume of water containing the target to be classified. The test volume is divided into test cells such that each test cell contains a portion of the target or scatterer that will scatter the transmitted waveform. Scattering of the transmitted waveform at each test cell is described by a scattering coefficient that is unique for each of the targets in the set of known hypotheses. Accordingly, the scattering coefficient serves as an identifier of the target to be classified. The relationship of the set of scattering coefficients for each of the known target hypotheses is provided by a known covariance matrix. An acoustic receive array receives a portion of the scattered waveform from each of the test cells in the test volume. This received portion is a function of the scattering coefficients of the target to be classified and the transmitted waveform appropriately time delayed by the time between transmission and receipt. The scattering coefficients at each test cell are then estimated for each of the possible hypotheses. Estimation is based upon the known covariance matrices and the receive portion of the scattering. Then, an estimation is made of the received portion of the scattering for each of the possible hypotheses. Estimation of this receive portion is based upon the estimated scattering coefficients and the time-delayed, transmitted waveform. Finally, the estimated received portion of the scattering is correlated with the actual received portion of the scattering. A high correlation is indicative of the target to be classified.

    摘要翻译: 提供了一种用于从一组已知目标假设的水下目标的声学图像分类的声学处理的方法。 将声波形传输到含有要分类的目标物的水的试验体积中。 测试体积被分为测试单元,使得每个测试单元包含将分散发射波形的目标或散射体的一部分。 通过对已知假设集合中的每个目标是唯一的散射系数来描述每个测试单元处的透射波形的散射。 因此,散射系数用作要分类的目标的标识符。 通过已知的协方差矩阵提供每个已知目标假设的散射系数集合的关系。 声学接收阵列从测试体积中的每个测试单元接收散射波形的一部分。 该接收部分是要分类的目标的散射系数和传输波形在发送和接收之间适当地延迟的时间的函数。 然后针对每个可能的假设估计每个测试单元处的散射系数。 估计是基于已知的协方差矩阵和散射的接收部分。 然后,对于每个可能的假设,对接收的散射部分进行估计。 该接收部分的估计基于估计的散射系数和时间延迟的传输波形。 最后,散射的估计接收部分与散射的实际接收部分相关。 高相关性表示要分类的目标。

    Submergible towed body system
    8.
    发明授权
    Submergible towed body system 失效
    潜水拖车车身系统

    公开(公告)号:US5752460A

    公开(公告)日:1998-05-19

    申请号:US605235

    申请日:1996-02-02

    IPC分类号: B63B21/66 B63G8/39 B63G8/42

    CPC分类号: B63G8/42 B63B21/66 B63G8/39

    摘要: A submergible towed body system carries an acoustic transmission/reception evice under the surface of the water and relays signals between the acoustic transmission/reception device and a surface platform. An elongated support frame has upper and lower horizontal frame sections maintained in a parallel spaced apart relationship by a plurality of vertical frame supports. A float is attached on top of the upper horizontal frame section and a tow point depends from the upper horizontal frame section. Attached to the upper and lower horizontal frame sections is a combination tilt and pan mechanism that allows the acoustic transmission/reception device to pan through a prescribed horizontal angle and tilt through a prescribed vertical angle. Circuitry is mounted between the upper and lower horizontal frame sections and aft of the tilt and pan mechanism for electrically connecting the surface platform to the acoustic transmission/reception device.

    摘要翻译: 潜水拖车车身系统在水面下方携带声发射/接收装置,并在声发射/接收装置与表面平台之间传递信号。 细长的支撑框架具有由多个垂直框架支撑件保持为平行隔开关系的上部和下部水平框架部分。 浮子附着在上部水平框架部分的顶部,牵引点由上部水平框架部分组成。 连接到上下水平框架部分是组合倾斜和平移机构,其允许声学发送/接收设备平移穿过规定的水平角度并且倾斜经过规定的垂直角度。 电路安装在上下水平框架部分和倾斜和平移机构的后部之间,用于将表面平台电连接到声学传播/接收装置。