... background exposure 本底照射 background fluctuations 背景起伏，背景波动 background fog 本底雾 ...
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空间相关长度分析证实了背景起伏具有强的空域相关性。
The spatial correlative length analysis proves the clutter highly spatial correlative.
在平稳的基础上，使用相关长度刻划背景起伏的时空域相关性，得到两个结论。
Based on the stationary, the correlative length was applied to describe its temporal-spatial correlation, and then two conclusions were made.
但当背景起伏较大时，基于背景预测的弱小目标检测方法的检测性能会受到影响。
Since background in the IR images changes quite slowly, it is meaningful to detect targets by background prediction.
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