We present a decomposition of finitely supported filters ( aka instrument function PSF) as a composition of invertible and non-invertible filters. The invertible component can be inverted directly and the non-invertible component is shown to decrease the resolution of the acquired signal.

翻译：我们将有限支持的过滤器(aka仪器功能PSF)分解成不可倒置和不可倒置的过滤器组成。 不可倒置的部件可以直接倒置,不可倒置的部件可以降低获得信号的分辨率。