1) stayed variation
留下变数
2) subscripted variable
下标变数
3) Liuxia
留下
1.
Study on the conservation planning of Hangzhou Liuxia historic district;
杭州留下历史街区保护规划研究
4) digital down conversion
数字下变频
1.
FFT based on digital down conversion and its realization in spectrum analyzers;
数字下变频FFT及其在频谱分析仪中的实现
2.
An algorithm of digital down conversion based on FPGA;
一种基于FPGA的数字下变频算法研究
3.
Design of Digital Down Conversion with FPGA;
基于FPGA的数字下变频研究实现
5) Digital down-converter
数字下变频
1.
Investigation of the digital down-converter on software radio;
软件无线电中的数字下变频技术研究
2.
The Application in Digital Receiver of the Programmable Digital Down-Converter HSP50214B;
可编程数字下变频器件HSP50214B在全数字接收机中的应用
3.
Directed at increasing data due to intermediate frequency sampling in software defined radio system,the paper introduces the use of the technique of digital down-converter in the receiver to reduce the DSP computation press of the baseband.
为了解决软件无线电通信系统中频采样之后的极大数据量,在基带处理部分对DSP的计算压力,其接收机中采用了数字下变频技术。
6) digital down-conversion
数字下变频
1.
Sampling of IF,digital down-conversion and DSP are used to digitize terminal guidance seeker.
利用中频采样、数字下变频以及DSP技术,实现了末制导雷达的数字化。
2.
This paper introduces the principle of digital down-conversion(DDC) based on multiphase filtering configuration,analyzes the principle of frequency measurement method for digital down-converting,at last gives the simulation result.
介绍了基于多相滤波结构的数字下变频原理,对用于数字下变频的测频方法进行了理论分析,最后给出了仿真结果,证明该方法是简单易行的。
3.
Based on the discussion of the structure of digital down-conversion (DDC) in software radio receiver,this paper suggests the classification of decimation filtering to reduce the taps of the anti-aliasing filters,and the suggestion to use different resources at separate step of decimation filtering during the multiple steps,so as to make the resources of FPGA high-efficient utilization.
针对软件无线电接收机中数字下变频的特点,提出了一种合理的基于FPGA实现宽带数字下变频的方案,即分级实现以降低抗混叠滤波器的阶数;并且每级采用不同算法实现滤波抽取以占用不同资源,从而实现FPGA总体资源的合理、高效利用。
补充资料：留下
1.谓把东西搁下。 2.留住下来。 3.收受下来。 4.指付钱买下。 5.停留而攻下。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条