Then the amplitude threshold is established combined with detection probability. The method of ascertaining pulse number threshold is analyzed according to orientation requirement and target size.

在此基础上，结合探测概率制定幅度门限，根据定位要求及目标尺寸，分析了脉冲个数门限的确定方法。

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In the course of tracking IR motive targets, a large number of false alarm signals might appear in the target detection stage of an IR ATR system because of the non-prediction of IR targets signature.

在红外动目标序列图像跟踪过程中，由于目标本身的红外特征具有较大的不可预测性，使A TR系统在目标探测阶段产生大量的虚警讯息。

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