目标匹配和跟踪算法利用多个脉冲之间的相关信息，降低了目标检测门限，提高了测距范围。
The target matching and tracking algorithm makes use of the interrelated information, decreases the threshold and increases the range.
检测传感器采用多单元浮动式传感器， 结合较大游动范围的探头张合结构， 解决了在传动线上因油管中心不等高难以实现检测跟踪的问题。
The multiunit floating sensor with wide detecting range is assembled as testing sensor so as to realize centralizing adjustment of tubings with different sizes.
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