原理分析与实验结果表明，这是一种易于硬件实现，能有效抑制强起伏背景杂波的线性滤波方法。
Theory analysis and computer simulation show the improved SMF is a linear approach and it can extract dim target from IR background clutter effectively.
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.
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