down sampling meaning in Chinese

下降抽样

Firstly , we introduce the fundament theory of digital quadrature modulation and digital filter , we also introduce the concept and the key technology of software , including smart antenna , ad , sampling , digital down sample theory . it " s very important to understand this theory . subsequently , we introduce two common designs and its supported hardware , and we also present a new design based on swr
文中首先介绍了数字信号处理技术，包括数字正交解调技术、数字滤波器的基本理论，接着介绍了软件无线电的基本概念和关键技术，包括智能天线的概念、软件无线电中的ad技术、中频带通采样技术、数字下变频技术，深入理解这些技术是实现成功方案的基础。
Typical output horizontal formats are high definition 1920 pixels and standard definition 1280 pixels . the purpose of the horizontal format conversion is to allow up or down sampling of picture data in order to increase or decrease the number of horizontal samples in a line to allow the video output to match many different standards
水平格式变换的目的在于对视频数据进行上抽样或下抽样以增加或减少每行的像素数量，使视频输出符合不同的标准；垂直格式变换则是对视频图像的垂直分辨率上进行上抽样或下抽样。