Limited from detecting means, the threat estimation on air targets is a difficult problem to submarine underwater.

由于受探测手段的限制，水下潜艇对空中目标的威胁评估一直是研究难题。

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This method resolves the problem of threat assessment and threat sorting to the enemy air attack targets efficiently.

该方法有效地解决了对敌空中目标威胁评估与排序问题。

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How to evaluate the threat of air targets on partial unknown attribute value is a hard problem.

如何在空中目标的指标值不完全确定的情况下对目标进行威胁评估，这是一个棘手的问题。

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