In this paper , it is introduced to the influence of cavitation factor , measurement taps , sampling frequency and sampling time on the test result in pressure fluctuation test of the water turbine 摘要介绍了水轮机压力脉动试验时空化系数、测量位置及测点、信号采样频率及采样时间等因素对试验结果的影响。
This system uses multicenter synchronization sampling and dma sampling control method , which has high sampling frequency . the system can realize displaying and analyzing in real time 该系统采用多通道同步采集，采样频率高，且采用dma控制方式，实时性强，能够实现振动、摆度信号实时显示和分析等功能。
For 15mhz immersion focusing ultrasonic testing signal , the proper sampling frequency is 90mhz , the appropriate strobe - width is 1 . 2us and the sampling error less than 20 % 本文的试验分析结果表明，对于中心频率为15mhz的水浸聚焦探头，其采样频率应不低于90mhz ，闸门宽度为1 . 2us ，特征点的采样误差应不大于20 。
In the time - interleaved adc system , m pieces of adcs work in a parallel method and sample at a sampling frequency fs / m , in the back - end of the system , m outputs are multiplexed to give an overall sampling frequency f s 这种方法在前端利用m片adc并行交替采样,在后端进行拼接使得整个采集系统的速率为m片速率之和。
This paper makes out the sampling frequency of bandpass sampling theorem , reduces the data rate after the sampling of broadband software radio ( signal bandwidth is 20 mhz ) and raises information processing speed 本文确定了按带通采样定理采样的频率，降低了宽带软件无线电(信号带宽为20mhz )采样后的数据率，提高了信息处理能力。
The model includes the obscuration ’ s character of position , shape , scale , number , area percent , greyhound , and it also includes the sampling frequency of analyzing the obscuration and the area of optical component 该模型包括散射点位置,形状,尺度,数目,散射面积比,灰度,还包括分析散射点的采样频率,散射点所在的光学元件面积等特征。
The system discussed in the dissertation has the architecture built with dsp and fpga , we will design and develop a data acquisition system based on this structure , which sampling frequency is 1 gsps , bandwidth is 200 mhz 本文设计的数字采集系统采用dsp + fpga的智能仪器结构,采用实时取样技术,实现1gsps最高采样率, 200mhz带宽的数字存储示波器。
Although the tread irregularities depth computing result error is a little big due to the sampling frequency is too low . we believe that the tread irregularities depth computing result will improve with enhancing the frequency of the sampling 擦伤精度虽由于采样频率太低的原因而误差稍大，但趋势明显，相信只要提高频率，擦伤深度的测量精度会改善。
Two multi - band ( all band ) sampling schemes are also proposed for software radio . based on the quadrature sampling , uniform sampling and high order sampling techniques , we investigated how to compute and choose a reasonable sampling frequency 从理论上分析了软件接收机以正交带通采样、一阶均匀带通采样、高阶采样等方法为基础，如何计算、选择合理的采样频率。
In this project , we adopt dsp + fpga structure . for its great flexible and universal characteristic , we will design and develop a digital storage oscillograph based on this structure , which sampling frequency is 5 gsps , bandwidth is 100 mhz 本项目是采用dsp + fpga结构,采用实时和随机两种取样技术,实现5gsps最高等效采样率, 20mhz等实时带宽的手持式数字存储示波器。
