Frequency dispersive transmitting array
    62.
    发明授权
    Frequency dispersive transmitting array 失效
    频率色散传输阵列

    公开(公告)号:US5150336A

    公开(公告)日:1992-09-22

    申请号:US758994

    申请日:1991-09-03

    摘要: A Frequency Dispersive Transmitting Array (30) for propagating composite e energy (10) emulates narrow-band beams (20) of different frequencies which can be simultaneously radiated in all directions, or in any subset of directions, relative to an array (42) of radiating elements (32) because of the addition and cancellation of components of wave energy (10) radiated, is disclosed. A signal source (34) provides input signals (36), having frequencies which may be acoustic or electromagnetic, which are coupled by feedline (37) to radiating elements (32) through a plurality of time delay devices (38). Each one of time delay devices (38) is interposed between successive ones of radiating elements (32) and delays emission of replicas of signals (36) therefrom by a time delay .tau..sub.0 which is a multiple of the period of the dominant frequency radiated in a direction broadside to the array. Window weighting function devices (40) are coupled into feedline (37) modifying signals (36) ahead of radiating elements (32) to control the behavior of side lobes of the beam as in a conventional beam-forming array. Frequency dispersion of the beams (20) is controlled by selection of the bandwidth of input signals (36) having frequencies in a desired spectrum depending on the use of the system. Direction (.theta.) of an object from transmitting array (30) is determinable from the frequency of wave energy (10) either directly received at the object or reflected by the object to a remote receiver, because each direction (.theta.) corresponds to a distinct frequency (f) of transmitted wave energy (10).

    摘要翻译: 用于传播复合波能量(10)的频率分散发射阵列(30)模拟不同频率的窄带波束(20),其可以相对于阵列(42)在所有方向或任何方向子集中同时辐射, 公开了辐射元件(32),因为辐射波能量(10)的分量的增加和消除。 信号源(34)提供具有可以是声学或电磁的频率的输入信号(36),其通过馈线(37)通过多个时间延迟装置(38)耦合到辐射元件(32)。 时延装置(38)中的每一个被插入到相继的辐射元件(32)之间,并延迟了信号(36)的复制品的发射时间延迟τ0,时间延迟装置是主要频率辐射周期的倍数 一个朝向阵列的方向。 窗口加权功能设备(40)被耦合到馈线(37)中,修改辐射元件(32)之前的信号(36),以如在传统的波束形成阵列中那样控制波束的旁瓣的行为。 通过根据系统的使用选择具有期望频谱的频率的输入信号(36)的带宽来控制波束(20)的频率分散。 来自发射阵列(30)的物体的方向(θ)可从波形能量(10)的频率确定,波能量(10)直接在物体处接收或被物体反射到远程接收器,因为每个方向(θ)对应于不同的 发射波能量的频率(f)(10)。

    Beam forming method and apparatus therefor in ultrasonic imaging system
    63.
    发明授权
    Beam forming method and apparatus therefor in ultrasonic imaging system 失效
    波束形成方法及其设备在超声波成像系统中的应用

    公开(公告)号:US5063541A

    公开(公告)日:1991-11-05

    申请号:US500907

    申请日:1990-03-29

    摘要: A beam former method and an apparatus therefor in an ultrasonic imaging system, in which switching of delay elements is performed by means of delay switches in a section in which no ultrasonic wave transmission/reception is performed and switching noise generated in this section is stored as a noise signal into a memory. The stored noise signal is subtracted from a reception signal which is obtained through ultrasonic wave transmission/reception and which contains switching noise superimposed thereon to thereby obtain a reception signal from which the noise has been eliminated.

    摘要翻译: 一种超声波成像系统中的波束形成方法及其装置,其中延迟元件的切换是通过在不执行超声波发送/接收的部分中的延迟开关进行的,并且将该部分中产生的开关噪声存储为 将噪声信号转换成存储器。 从通过超声波发送/接收获得并且包含叠加在其上的切换噪声的接收信号中减去所存储的噪声信号,从而获得已经消除了噪声的接收信号。

    Solid state sequencing switch
    64.
    发明授权
    Solid state sequencing switch 失效
    固态排序开关

    公开(公告)号:US4985874A

    公开(公告)日:1991-01-15

    申请号:US137599

    申请日:1971-04-26

    IPC分类号: G01S3/801 G10K11/34

    CPC分类号: G10K11/341 G01S3/801

    摘要: A combination of integrated circuit (IC) flatpacs used in combination to tch selected sonar microphone inputs from a circular receiving array to position a beam containing a sounding target intermediate to an equal number of left and right microphone pickups and selectively switching through weighted delay circuits for beam forming to present the target in this receiving beam electronically on a flat display with digital control of "coarse" seven and one-half degrees and "fine" one-tenth degree increments to provide a display of the bearing of the target.

    摘要翻译: 集成电路(IC)平板电脑的组合,其组合用于从圆形接收阵列切换选定的声纳麦克风输入,以将包含探测目标中间的波束定位到相等数量的左和右麦克风拾音器,并且选择性地切换加权延迟电路, 波束形成以电子方式在平面显示器上呈现目标在该接收波束中,数字控制为“粗略”七点半度和“微调”十分之一增量,以提供目标的方位显示。

    Ultrasonodiagnostic tomography apparatus
    65.
    发明授权
    Ultrasonodiagnostic tomography apparatus 失效
    超声诊断断层摄影仪

    公开(公告)号:US4974558A

    公开(公告)日:1990-12-04

    申请号:US769805

    申请日:1985-08-27

    摘要: In an ultrasonodiagnostic tomography apparatus for transmitting focused sound wave from a plurality of transducers forming an array to a predetermined focus point and for carrying out beam formation for receiving sound from said focus point with dynamic focusing, wherein the width of transmission beam at said focus point is controlled by means of said transducers so that the width of transmission beam at said focus point may be larger than the width of receiving beam from said focus point.

    摘要翻译: 在用于将形成阵列的多个换能器的聚焦声波发送到预定焦点并且用于通过动态聚焦执行用于从所述焦点接收声音的波束形成的超声诊断断层摄影装置中,其中在所述焦点处的发射束的宽度 通过所述换能器来控制,使得在所述焦点处的透射束的宽度可以大于从所述聚焦点的接收光束的宽度。

    Ultrasonic diagnosis apparatus
    66.
    发明授权
    Ultrasonic diagnosis apparatus 失效
    超声诊断仪

    公开(公告)号:US4332171A

    公开(公告)日:1982-06-01

    申请号:US165622

    申请日:1980-07-03

    摘要: An ultrasonic diagnosis apparatus is provided with a plurality of phased array transducer elements arranged in a row. The number of simultaneously driven transducer elements is changed in response to a rate pulse to increase the ultrasonic scanning line density without increasing the number of the transducer elements, while the position of the focal point is adjusted to maintain the minimum width position of the ultrasonic beam provided by the group of the simultaneously driven transducer elements substantially constant irrespective of the change of the number of the simultaneously driven transducer elements by controlling the phase of transmitted and received ultrasonic waves by means of delay elements.

    摘要翻译: 超声波诊断装置具有排成行的多个相控阵变换元件。 同时驱动的换能器元件的数量响应于速率脉冲而改变以增加超声波扫描线密度而不增加换能器元件的数量,同时调整焦点的位置以保持超声波束的最小宽度位置 由同步驱动的换能器元件组通过借助于延迟元件控制发射和接收的超声波的相位而与同时驱动的换能器元件的数量的变化无关地基本上恒定。

    Steered time compressor beam former
    67.
    发明授权
    Steered time compressor beam former 失效
    转向时间压缩机梁

    公开(公告)号:US4200923A

    公开(公告)日:1980-04-29

    申请号:US048623

    申请日:1970-05-28

    申请人: Fred W. Thies

    发明人: Fred W. Thies

    IPC分类号: G01S7/526 G10K11/34 G01S3/80

    摘要: A sonar apparatus incorporating steered time compressor means for time coessing and steering hydrophone information. Novel control circuitry enables time compressing and steering operations to be performed in a single storage device.

    摘要翻译: 一种声纳装置,包括用于时间压缩和转向水听器信息的转向时间压缩装置。 新颖的控制电路使得能够在单个存储设备中执行时间压缩和转向操作。