再次下潜之前，它们通过航行使用的船只上的电脑进行卫星定位。
Before diving again, they take a GPS bearing, which an on-board computer uses to navigate by.
水下潜器长时间隐蔽航行依赖于自主水下定位手段。
The long time concealable sail of underwater vehicles depend on autonomous navigation.
尾流光的背向散射特性是水下航行体跟踪、识别和定位目标的重要参数。
The optical back scattering characteristic of wake is a most important parameter for under water targets' scout , recognition and position.
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