Hydrophone array
    1.
    发明授权
    Hydrophone array 失效
    水听器阵列

    公开(公告)号:US5742562A

    公开(公告)日:1998-04-21

    申请号:US655031

    申请日:1996-05-29

    CPC classification number: G01V1/201

    Abstract: A hydrophone array to perform passive and active sound imaging is described. The array is comprised of a plurality of acoustic transducers attached to a cable that may be towed behind a geophysical survey vessel. The cable and acoustic transducers are enclosed within a sheath of essentially constant external dimensions, which extends longitudinally the length of the cable and which is effective in minimizing turbulent noise created by the array during its use. The sheath may be circular or elliptical in cross-section and can enclose a jacket of resiliently flexible and positively buoyant material that encases the cable and transducers.

    Abstract translation: 描述了执行被动和主动声音成像的水听器阵列。 该阵列由附接到电缆的多个声换能器组成,其可被拖到地球物理测量船的后面。 电缆和声学传感器被封装在基本上恒定的外部尺寸的护套内,该外壳尺寸纵向延伸到电缆的长度,并且其在使用期间有效地最小化由阵列产生的湍流噪声。 护套的横截面可以是圆形或椭圆形,并且可以包围弹性柔性和正向浮力材料的护套,其包围电缆和换能器。

    Method for acoustic/electromagnetic signal processing
    2.
    发明授权
    Method for acoustic/electromagnetic signal processing 失效
    声/电磁信号处理方法

    公开(公告)号:US5471435A

    公开(公告)日:1995-11-28

    申请号:US242555

    申请日:1994-05-13

    CPC classification number: G01V1/282 G01V2210/67

    Abstract: A process for predictively modelling potential fields in inhomogeneous media is particularly suited for implementation as a Digital Signal Processing chip, as it rapidly predicts the potential field by repeatedly perturbing a trial field solution by a step approximation to the known inhomogeneous media, and then, with one Fast Fourier Transform and one Inverse Fast Fourier Transform, creates a second estimated field solution; a fixed number of such iterations provides a final potential field model, which may be compared with a sensed field to predictively adapt sensor arrays or beam shaping.

    Abstract translation: 用于对不均匀介质中的潜在场进行预测建模的过程特别适合于作为数字信号处理芯片的实现,因为它通过对已知非均匀介质进行逐步近似反复扰动试验场解决方案来快速预测潜在场, 一个快速傅里叶变换和一个快速傅里叶逆变换,创建第二个估计场解; 固定数量的这样的迭代提供最终的潜在场模型,其可以与感测的场进行比较以预测地适应传感器阵列或波束成形。

    Noise shielded hydrophone
    3.
    发明授权
    Noise shielded hydrophone 失效
    隔音水听器

    公开(公告)号:US5381382A

    公开(公告)日:1995-01-10

    申请号:US106203

    申请日:1993-08-12

    CPC classification number: G10K11/006

    Abstract: An improved hydrophone body, suitable for forming an array of towed hydrophone bodies or "fish", formed by placing an acoustic shield or scatterer in the nose and tail sections of the hydrophone body to reduce noise coupling from the cable into the hydrophone sensor. This resulting hydrophone has significantly reduced background noise interference.

    Abstract translation: 一种改进的水听器体,适于形成通过将声屏蔽或散射体放置在水听器体的鼻部和尾部中而形成的拖曳水听器体或“鱼”的阵列,以减少从电缆到水听器传感器的噪声耦合。 这种水听器具有显着降低的背景噪声干扰。

    Extended frequency range hydrophone
    4.
    发明授权
    Extended frequency range hydrophone 失效
    扩展频率范围水听器

    公开(公告)号:US5367497A

    公开(公告)日:1994-11-22

    申请号:US106202

    申请日:1993-08-12

    CPC classification number: G01V1/186 B06B1/0688 G01V1/201

    Abstract: The current invention discloses a construction of a hydrophone body and hydrophone sensors which provides a significantly enhanced wide band frequency sensor capability within the construction of a sensor array towed in a cable. This construction extends a tuned resonator or sensor along the hydrophone body and into an adjacent section of interconnecting cable. This elongated sensor, in the form of a tubular sensor, provides an enhanced, very low frequency sensing capability within the overall hydrophone array, supplementing the frequency range of the encased hydrophone sensor.

    Abstract translation: 本发明公开了一种水听器体和水听器传感器的结构,该传感器在拖缆在电缆中的传感器阵列的构造中提供显着增强的宽带频率传感器能力。 这种结构将调谐谐振器或传感器沿着水听器主体延伸并连接到互连电缆的相邻部分。 这种呈管状传感器形式的细长传感器在整个水听器阵列内提供增强的,非常低的频率感测能力,从而补充了封装的水听器传感器的频率范围。

    Hydrophone and array thereof
    5.
    发明授权
    Hydrophone and array thereof 失效
    水听器及其阵列

    公开(公告)号:US5742559A

    公开(公告)日:1998-04-21

    申请号:US762755

    申请日:1996-12-10

    CPC classification number: G01V1/201

    Abstract: A piezoelectric transducer hydrophone comprised of a plurality of longitudinal segments is described. The longitudinal segments allow the transducers to be readily attached to cables to form hydrophone arrays. Should a particular transducer become faulty following testing or use of the hydrophone array, the longitudinal segments allow the transducer to be accessed without the need to remove all of the acoustic transducers on the cable between the end of the cable and the one that is faulty.

    Abstract translation: 描述了由多个纵向段组成的压电换能器水听器。 纵向段允许换能器容易地连接到电缆以形成水听器阵列。 如果特定传感器在测试或使用水听器阵列之后发生故障,则纵向段允许访问换能器,而无需移除电缆末端和故障之间的电缆上的所有声学换能器。

    Hydrophone and array thereof
    6.
    发明授权
    Hydrophone and array thereof 失效
    水听器及其阵列

    公开(公告)号:US4958329A

    公开(公告)日:1990-09-18

    申请号:US310301

    申请日:1989-02-13

    CPC classification number: G10K11/006

    Abstract: A low noise hydrophone which is towed by a cable and has a smoothly increasing front cross-section to a maximum diameter and a smoothly decreasing rear cross-section. The hydrophone sensor is located in the forward section of the hydrophone such that the varying flexural rigidity and shape of the hydrophone results in low turbulence as the hydrophone moves through water.

    Abstract translation: 一种由电缆牵引并具有平滑增加的前横截面到最大直径和平滑减小的后横截面的低噪声水听器。 水听器传感器位于水听器的前部,使得随着水听器移动通过水,水听器的变化的弯曲刚度和形状导致低湍流。

    Seismic noise suppression method
    7.
    发明授权
    Seismic noise suppression method 失效
    地震噪声抑制方法

    公开(公告)号:US4937794A

    公开(公告)日:1990-06-26

    申请号:US53

    申请日:1987-01-02

    CPC classification number: G01V1/36 G01V2210/32

    Abstract: Coherent noise on seismic records is suppressed by reformatting the common shot gathers to common receiver gathers. Pairs of seismic traces from a common receiver gather are corrected for differential normal moveout, weighted in inverse relation to the RMS signal power, and combined to generate compressed common receiver gathers. The compressed common receiver gathers may be reformatted as common midpoint gathers for further processing.

    Abstract translation: 通过将共同拍摄集合重新格式化为普通的接收机聚集,可以抑制地震记录上的相干噪声。 对来自公共接收机集合的地震迹线对对于差分正常移动进行校正,与RMS信号功率成反比地加权,并且组合以产生压缩的公共接收机集合。 压缩的公共接收器集合可以被重新格式化为常见的中点集合用于进一步处理。

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