Terms for subject Air defense containing Background

English	Chinese
background environment information	背景环境信息
background noise eliminator	背景噪声消除器
background reflectance	背景反射
background return	地景反射信号
clutter background	地物干扰
clutter background	杂波背景
clutter background	背景杂波
galactic background noise	银河背景噪声
speckled background	斑点背景
target and background signal-to-noise evaluation	目标和背景的信噪比评估