片语

wideband digital intermediate frequency宽带数字中频

digital intermediate frequency theoretic数字中频化

digital intermediate film数字中间片

whole digital intermediate frequency全数字中频

digital intermediate frequency platform数字中频平台

Digital Intermediate Frequency Technique数字中频技术

digital intermediate frequency中频数字化

digital intermediate frequency sampling数字中频采样

英汉例句

• this article mainly studies the theory and design methods of the digital intermediate frequency receiver in cdma2000 system.

  本文主要研究了cdma2000系统数字中频接收机的原理，设计方法。

• and one of key techniques is realization of digital intermediate frequency receiving system.

  其中数字化中频接收系统是关键技术之一。

• first, the theory and basic knowledge of digital intermediate frequency receiver and the genetic algorithms principle for optimizing the quantization coefficient of the digital filter are expatiated.

  首先，对数字中频接收机理论基础进行叙述。并讲述了用于优化数字滤波器系数的遗传算法原理和算法。

• finally the fruit of research for my master degree presents in the way of actual de-hopping and digital intermediate frequency receivers that have passed the examination.

  最终以通过检测的跳频解跳与数字中频接收机的实物作为硕士期间的研究成果呈现。

• a feasible digital intermediate frequency receiver based on software radio technology is presented in this paper.

  基于软件无线电思想介绍了一种可行的中频数字化接收机系统设计方案。

• the technology of direct digital frequency synthesis has been most developed in the recent years. at the same time, the digital intermediate frequency signal processors are also presented.

  基于近年来数字频率合成技术的发展和大量数字中频产品的出现，本文提出了一种利用数字上变频技术进行基带信号的数字域调制和频率变换的方法。

• while the digital intermediate frequency technology is one of the pivotal technology in the wireless base station system.

  而数字中频技术是无线基站传输系统中的关键技术之一。

• digital intermediate frequency (if) demodulation based on fpga show good coordination to deal with the contradiction between the capacity and flexibility.

  采用fpga实现数字中频，能够很好的协调处理能力和灵活性之间的矛盾。

• this paper introduces the technique of shortwave direction finding based on digital intermediate frequency, fft and waston-watt principle.

  本文根据传统的沃森瓦特测相原理，提出了一种基于数字中频、fft以及测相算法的三通道短波测向技术。

• finally, a whole design method of the digital intermediate frequency is obtained by simulating the design with matlab and contrasting the design results loaded to the hardware.

  通过matlab进行仿真验证，把相应的设计结果嵌入硬件进行对比，最后得到完整的数字中频接收机设计方法。

• this paper introduces the theory and design method of digital intermediate frequency receiver, and based on high speed dsp and fpga establish hardware process platform.

  介绍了一种数字中频接收机的原理与设计方法，并以高性能dsp、高速fpga为基础，搭建硬件处理平台。

• this paper discusses the realization of the digital intermediate frequency modul in software radio system.

  本文讨论了软件无线电收发系统数字中频模块的实现方法。

• in digital repeater, the application of digital intermediate frequency technology and realization of optical fiber transmission for distance will require for little phase noise of phase-locked source.

  数字直放站采用数字中频处理技术方式并通过光纤实现远距离信号传输，此对系统中的锁相源的相位噪声提出了很高的要求。

• this paper is mainly about design and implementation of digital intermediate frequency (if) transceiver combined with the software defined radios (sdr) technology based on fpga.

  本课题将以fpga为硬件载体，结合软件无线电技术设计实现数字中频扩频收发系统。

• the key component of the system is a digital intermediate frequency receiver employing dsp and fpga to obtain amplitude and phase data in real-time, which improves measurement speed and flexibility.

  该系统的关键部件是一个数字中频接收机，利用dsp和fpga实时获取幅度和相位数据，从而提高了测量速度和灵活性。

• combined with the features of virtual instrument, the scheme realizing virtual rf spectrum analyzer is presented and realized in this paper, and digital intermediate frequency method is emphasized.

  结合虚拟仪器的特点，提出并实现了一种虚拟射频频谱仪的方案，着重介绍了其中的中频数字化实现方法。