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频率扫描信号
相关语句
  frequency sweep signal
     Digital Realization Method of Frequency Sweep Signal
     频率扫描信号的一种数字实现方法
短句来源
     The direct digital synthesizing frequency sweep signal system based on the technique of ISP
     基于ISP技术的数字频率扫描信号发生系统
短句来源
     A novel method of direct digital synthesizing frequency sweep signal is presented.
     介绍了利用直接数字合成技术产生频率扫描信号的新方法。
短句来源
     Frequency sweep signal sequence is generated from waveform memories added by counter and phase accumulator.
     利用计数器和相位累加器实现对波形存储器寻址 ,从而产生频率扫描信号序列。
短句来源
  “频率扫描信号”译为未确定词的双语例句
     The PLL part, made of PD, Loop Filter, Voltage Control Oscillator, is the key circuit of the system to produce steady and continuous frequency scanning signal.
     PLL锁相环路部分主要由鉴相器、环路滤波器、电压控制振荡器构成,产生稳定连续的频率扫描信号,它是本系统的关键电路。
短句来源
     The system is controlled by a computer which the singlechip is connected with basing on ISA bus interface, and consists of wafer measurement and separation. The frequency measurement system adopts pi-network most transmission method to measure the electrical parameters of the quartz crystals, such as the frequency, the energy and clutter, moreover, it applies direct digital synthesizer(DDS) to produce the wishing frequency scanning signal and stimulate π network, so as to get the resonate frequency, autoeciousness frequency, activity and so on;
     此系统由两个子系统组成,都是以计算机为中心,基于ISA总线接口的单片机控制的测量系统和分选系统:其中测量系统采用π网络最大传输法测量石英晶片的电参数,使用直接数字频率合成器(DDS)生成期望的频率扫描信号并激励π网络的方法,从而获得石英晶片谐振频率、活力、寄生频率、杂波数等参数的测量;
短句来源
     With giving birth to steady frequency scan signal, the Phase Lock Loop(PLL) circuit is the most impoprtant circuit part in the design.
     PLL锁相环路是本系统的关键电路,它产生稳定的连续的频率扫描信号
短句来源
     Start frequency,stop frequency and sweep time of the signal synthesized by the method can be preset freely and controlled accurately.
     被合成的频率扫描信号的起始频率、终止频率和扫描时间可根据需要随意设定 ,并且可以实现对三者的精确控制
短句来源
     This paper introduces , which is made up of IS-PLSI1032 and AD7008. Start frequency ,stop frequency ,span of frequency ,and sweep time of the signal can be set freely. The amplitude and phase of signal doesn' t effect by the change of sweep frequency signal.
     本文介绍了利用Isp芯片Lattice公司的ispLSI1032E以及DDS频率合成器AD7008构成的数字频率扫描信号发生系统,本系统可以任意设置信号的起始频率、终止频率、信号幅值以及信号在每个频率保持的时间,系统自动以一定的频率步进量完成频率扫描,频率改变不会影响波形的连续性,也不会造成的相位的突变,真正实现频率的线性连续变化。
短句来源
更多       
  相似匹配句对
     Digital Realization Method of Frequency Sweep Signal
     频率扫描信号的一种数字实现方法
短句来源
     Frequency Modulation Coded Pulse Signal
     调频编码频率信号
短句来源
     Frequency Estimation of Chirp Signals
     Chirp信号频率估计
短句来源
     The direct digital synthesizing frequency sweep signal system based on the technique of ISP
     基于ISP技术的数字频率扫描信号发生系统
短句来源
     A novel method of direct digital synthesizing frequency sweep signal is presented.
     介绍了利用直接数字合成技术产生频率扫描信号的新方法。
短句来源
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  frequency sweep signal
A 6 volt, 10 Hz to 10 kHz frequency sweep signal is applied to the circuit in Figure 3 and Vs is measured.
      


A novel method of direct digital synthesizing frequency sweep signal is presented.Frequency sweep signal sequence is generated from waveform memories added by counter and phase accumulator.After the sequence passes through digital-to-analog converter and low pass filter,the desired frequency sweep signal is synthesized by the method of direct digital synthesis.Start frequency,stop frequency and sweep time of the signal synthesized by the method can be preset freely and controlled accurately.

介绍了利用直接数字合成技术产生频率扫描信号的新方法。利用计数器和相位累加器实现对波形存储器寻址 ,从而产生频率扫描信号序列。该序列通过数 -模转换器和低通滤波器后 ,产生出频率扫描信号。被合成的频率扫描信号的起始频率、终止频率和扫描时间可根据需要随意设定 ,并且可以实现对三者的精确控制

This paper introduces , which is made up of IS-PLSI1032 and AD7008. Start frequency ,stop frequency ,span of frequency ,and sweep time of the signal can be set freely. The amplitude and phase of signal doesn' t effect by the change of sweep frequency signal.

本文介绍了利用Isp芯片Lattice公司的ispLSI1032E以及DDS频率合成器AD7008构成的数字频率扫描信号发生系统,本系统可以任意设置信号的起始频率、终止频率、信号幅值以及信号在每个频率保持的时间,系统自动以一定的频率步进量完成频率扫描,频率改变不会影响波形的连续性,也不会造成的相位的突变,真正实现频率的线性连续变化。

This paper elaborated the measuring system based on ISA bus interface, using the method of π network to measure the electrical parameters of quartz crystal wafer and direct digital synthesizer(DDS) to produce the wishing frequency scanning signal and stimulate π network We can get the resonate frequency,activity,clutter and so on; sorting system which analyzes the electrical parameters of quartz crystal wafer, is controlled by the step motor control card The software of controlling system consists of user...

This paper elaborated the measuring system based on ISA bus interface, using the method of π network to measure the electrical parameters of quartz crystal wafer and direct digital synthesizer(DDS) to produce the wishing frequency scanning signal and stimulate π network We can get the resonate frequency,activity,clutter and so on; sorting system which analyzes the electrical parameters of quartz crystal wafer, is controlled by the step motor control card The software of controlling system consists of user interface,data analysis,communication and Database,which is programmed and realized by Visual C ++ 6 0

阐述了基于 ISA总线接口的测量系统 ,采用 π网络法测量石英晶片的电参数 ,使用直接数字频率合成器( DDS)生成期望的频率扫描信号并激励 π网络的方法 ,获得石英晶片的谐振频率、活力、杂波数等电参数 ;分选系统通过对石英晶片电参数进行分析 ,由基于 ISA总线的步进电机控制卡控制分档。软件部分利用 V isual C+ + 6.0编写程序 ,由用户界面、数据分析模块、通信模块和数据库模块四部分组成。

 
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