| 1. | Design and implementation of a digital intermediate frequency dsss system based on software radio
基于软件无线电的中频数字化直扩系统的设计与实现 |
| 2. | As what is concluded from the above that it is practicable to design the digital intermediate frequency receiver with wide band at present
由此可见，在现有条件下实现宽带数字中频接收机是可行的。 |
| 3. | In the paper , the emphasis is placed on the discussion of the algorithm of design and simulation of digital intermediate frequency system
本文主要研究了数字中频系统中的信号处理、设计及其仿真方法。 |
| 4. | Two projects to produce it are described in detail in this paper , which are analog intermediate frequency project and digital intermediate frequency
本文详细介绍和分析了模拟中频和数字中频两种场强仪实现方案，对于同类产品的研究有很大的参考价值。 |
| 5. | 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。 |
| 6. | The de - hopping and digital intermediate frequency receiver can either do the real - time de - hopping processing or be used as a software radio receiver
需要实现的跳频解跳与数字中频接收机既能对跳频信号进行实时解跳,又能做为一台软件无线电接收机使用。 |
| 7. | In the digital intermediate frequency project , the intermediate frequency signal is converted to digital signal directly into the dsp chip , then it is be processed by dft
数字中频方案将中频信号直接通过a / d转换后送入dsp芯片进行dft变换，最后得到待测信号频谱的采样序列。 |
| 8. | Digital intermediate frequency system is one of the hotspots in radio communication and military research , it provided a superexcellent way for high - speed double direction digital communication
数字中频系统是当前军事与移动通信领域的研究热点之一,它为高速双向无线数据通信提供了思路与方案[ 1 ] 。 |
| 9. | The current commercial ddc lack of high speed data processing and fast tune change , which limit the develop of the wideband digital receiver , so special digital intermediate frequency system is needed
目前商用的数字下变频器由于缺乏高的数据速率和快的调谐时间,使得宽带数字接收的发展受到限制,这就需要有专门的数字中频系统来解决此问题。 |
| 10. | After that , it discusses the principle of the band - pass technology , illuminating the feasibility of the digital intermediate frequency system based on the sampling speed which is two times lager than the signal band but unsatisfying the nyquist theorem
随后讨论了带通采样技术的原理,说明可以使用不满足奈奎斯特低通采样定理但大于信号带宽两倍的采样速率进行中频数字化,减轻基带处理负担。 |
