本文介绍环行器型波数字滤波器的简单算法和设计公式。
Simple algorithms and design formulae for circulator wave digital filters are given.
这些滤波器应用了波数字格形滤波器概念和宽带带通滤波器的新近似变换方法。
These filters are designed by using the concept of wave digital lattice filter and by making use of a novel approximate transformation method for wide band bandpass filters.
并研究编制了整个系统的监控软件，包括A/D采集和控制、数据通讯、显控等部分接口驱动程序以及数字信号滤波数据预处理软件；
And the paper studies and works out monitoring software in the whole system, including A/D acquisition and control, data exchange, DCI driver and digital signal filtering and data preprocess software.
利用多级汇水盆地在频率域(或波数域)中的频率差异，通过滤波方法逐级分离，并提取它们。
In this paper, multilevel water gathering basins are separated and extracted automatically with filtering from geographic map based upon their differences in frequency domain.
针对电子所机载SAR系统的回波数据，采用频域滤波方法有效地进行动目标检测和成像。
The dissertation uses spectral-filter method to detect moving target in the real echoes received from an airborne SAR system.
因此，作者将二维扇形滤波方法做了近一步的改善，引入了频率—波数域内带通切饼式滤波方法。
So the author improves the 2-d sector filtering method, introduces the bang-transit and cake-cut filtering method in frequency - wave count area.
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。
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.
使用三角形截断，截断波数为10的五层全球谱模式研究地形对季节内振荡的影响。分析了有地形和无地形模式模拟的一年带通滤波资料。
Based on the triangle truncation at wavenumber 10, a study is made of the topographic influence on the intra—seasonal oscillation (ISO) in terms of a 5—level low—order global spectral model.
使用三角形截断，截断波数为10的五层全球谱模式研究地形对季节内振荡的影响。分析了有地形和无地形模式模拟的一年带通滤波资料。
Based on the triangle truncation at wavenumber 10, a study is made of the topographic influence on the intra—seasonal oscillation (ISO) in terms of a 5—level low—order global spectral model.
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