Echo-sounding apparatus using fourier transformation
    1.
    发明授权
    Echo-sounding apparatus using fourier transformation 失效
    ECHO-SOUNDING APPARATUS USING FOURIER TRANSFORMATION

    公开(公告)号:US3803606A

    公开(公告)日:1974-04-09

    申请号:US27605172

    申请日:1972-07-28

    Applicant: CIT ALCATEL

    CPC classification number: G01S15/18 G01S15/8977

    Abstract: An echo sounding apparatus having a source of coherent waves and an array of detectors each providing an output signal significant of the phase and amplitude of that portion of a wave reflected from the target to which the coherent wave from the source is directed. Sampling circuitry samples the outputs of the detectors at periods delayed with respect to a sampling origin time by an amount proportional to the square of the distance from the sampled detector to a reference point in the array. A calculator is then provided for carrying out a Fourier transformation on each sample to provide an output signal representative of the target.

    Abstract translation: 一种具有相干波源和一组检测器的回波探测设备,每个检测器提供显着的来自源的相干波的反射的波的该部分的相位和幅度的输出信号的输出信号。 采样电路将相对于采样原点时间延迟的周期的检测器的输出采样成与从采样检测器到阵列中的参考点的距离的平方成正比的数量。 然后提供一个计算器,用于对每个样本进行傅里叶变换,以提供代表目标的输出信号。

    Device for determining the direction of propagation of a plane wave
    2.
    发明授权
    Device for determining the direction of propagation of a plane wave 失效
    用于确定平面波传播方向的装置

    公开(公告)号:US3792479A

    公开(公告)日:1974-02-12

    申请号:US3792479D

    申请日:1972-04-21

    Applicant: CIT ALCATEL

    CPC classification number: G01S3/802 G01S1/02 G01S3/8006

    Abstract: A device for determining the direction of propagation of a plane wave in an isotropic medium, in which the detectors are uniformly distributed on a circle. These detectors are disposed in groups each corresponding to a predetermined direction. Each detector is connected to a chain consisting of the same number of adders as detectors in a group. The adders are interconnected by shift registers.

    Abstract translation: 用于确定各向同性介质中的平面波的传播方向的装置,其中检测器均匀地分布在圆上。 这些检测器以对应于预定方向的分组的形式设置。 每个检测器连接到由与组中的检测器相同数量的加法器组成的链。 加法器通过移位寄存器互连。

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