Theory analysis and computer simulation show the improved SMF is a linear approach and it can extract dim target from IR background clutter effectively.

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。

youdao

By that time English (or any other modern language) could be as dead as Parthian or Linear A, and the British government as dim a memory as the pharaohs are today.

ECONOMIST: Nuclear waste