讨论了影响高速飞机红外作用距离的内外部因素，如飞机的内部传热、探测路径方向与有效辐射面积等。
The physics model of the IR radiation characteristic of high-speed aircraft was established. Ulteriorly, using this result, the …
并根据热尾流与周围海水的平均温度差计算出红外探测器对潜艇热尾流的作用距离。
According to the difference in temperature between thermal wake and seawater, the operation range of the detector to thermal wake was calculated.
通过对武装直升机的红外辐射特性进行分析，建立了凝视型IRST系统对武装直升机的作用距离模型。
Through analyzing the radiate characteristic of the armed helicopter in theories, the operating range model of a staring IRST system for the armed helicopter was established.
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