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Research on plane wave decomposition with transverse oscillations for sonar imaging

机译:声波分解与声纳成像横向振荡的平面波分解研究

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The purpose of this paper is to introduce a new beamforming method for sonar imaging, which is proposed based on the plane wave decomposition combine with back-propagation method and with transverse oscillations. This method was initially proposed for ultrasound Doppler imaging using transverse oscillations in linear geometry. The plane wave decomposition theory is used to decompose in different directions an acoustic field into a set of plane waves. By back-propagating the plane waves to the transducer array and after summing up all the back-propagated signals, we get one signal for each transducer. Transverse oscillations (TO) technique produces sonar images featuring oscillations in both spatial dimensions. This is natural for axial direction but necessitates specific beamforming for transverse direction. Thus this paper is aiming at improve sonar imaging quality in terms of lateral direction and adapting it to sonar sector scanning.
机译:本文的目的是引入用于声纳成像的新波束形成方法,基于平面波分解与背部传播方法和横向振荡的建议。最初提出了这种方法,用于使用线性几何形状中的横向振荡的超声多普勒成像。平面波分解理论用于分解在不同方向上的声场进入一组平面波。通过将平面波作为换能器阵列进行后传播到换能器阵列,并且在求出所有背传播信号之后,我们得到每个换能器的一个信号。横向振动(至)技术在空间尺寸中产生具有振荡的声纳图像。这对于轴向是自然的,但需要对横向方向的特定波束形成。因此,本文的目的是在横向方向方面提高声纳成像质量,并将其适应声纳扇区扫描。

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