提出了一种基于被动合成孔径的相位校正方法，有效地解决了因为首阵元未对齐（非对称）而引起的双线阵左右舷误判问题。
A passive synthetic aperture based on phase correction algorithm for solving the port-starboard discrimination problem in the non-aligned towed twin-line array sonar is described.
两路相位信号（来自一次仪表的左右传感器）的处理电路完全一样，此外还必须引出相位超前的第三路相位信号，其作用在于提醒MCU相位信号即将到达。
The third branch processes phase signal to make it precede the arrival of the other two ones. The function is to warn MCU of the arrival of right and left phase signals.
两路相位信号（来自一次仪表的左右传感器）的处理电路完全一样，此外还必须引出相位超前的第三路相位信号，其作用在于提醒MCU相位信号即将到达。
The third branch processes phase signal to make it precede the arrival of the other two ones. The function is to warn MCU of the arrival of right and left phase signals.
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