According to coupled wave theory, the volume hologram has a good property for light filtering and can be used as a kind of narrow-band filter.

根据耦合波理论，体积全息图有很好的滤光特性，可以作为一种窄带滤光片在实际中得到应用。

youdao

Two methods with which the long disturbance is removed from the digital are introduced: narrow band low - pass filtering canceling method and adaptive high - pass filtering method.

本文主要提出两种消除数字地震信号中长周期随机干扰的方法：窄带低通滤波对消法和自适应高通滤波法。

youdao

This paper analyzes the characteristics of the common Narrow Band Interference (NBI). A new approach for NBI suppression is proposed, which uses eigen-subspace based filtering on the echo data of SAR.

该文分析了常见的窄带干扰（NBI）的特性，并提出了一种基于回波数据特征子空间滤波的干扰抑制方法。

youdao