This paper aimed at studying the principle, architecture and features of SDR and developing a mid-frequency digital signal receiver platform Based On Software Radio.
本文对软件无线电的原理、体系结构及关键技术进行了研究，对基于软件无线电的数字中频接收机平台进行了研究与开发。
In GPS receiver many digital signal processing steps must be considered in order to align the incoming signal and local signal.
在GPS接收机中，为了将本地信号和接收到的信号同步，要完成复杂的信号处理过程。
The hardware of receiving and transmitting unit in the acoustic head contain the analog receiver and digital signal processing card.
声头内收发单元的硬件主要包括模拟接收机和数字信号处理机以及功放机。
Narrow band intermediate frequency digital receiver has been widely used in radar EW reconnaissance. At present, the high speed signal processing is the key point of its researching.
窄带中频数字接收机在雷达对抗侦察中得到了广泛应用，其高速信号处理技术是目前研究的重点。
In the basis of pulse Doppler digital fuze, the programmable pulse generator, digital receiver and digital signal processor are designed in detail.
在脉冲多普勒数字化引信的基础上，详细设计了可编程脉冲发生器、数字化接收机和数字信号处理机。
In the receiver, a novel digital method is proposed to demodulate the 2rc CPFSK signal.
在接收机中，使用了一种新颖的数字解调方法实现2rcCPFSK信号的解调。
At first, analog receiver is contrasted to digital receiver, and the feasibility and necessity of IF technology in radar signal processing are illuminated.
首先对模拟接收机和数字中频接收机进行了对比，得出采用数字中频处理雷达信号的可行性和必要性。
This thesis deals with the synchronization technologies for all digital receiver, particularly carrier offset estimation for MPSK signal.
本文研究全数字接收机中的同步技术，重点是MPSK信号的载波频偏和相位误差的估计和恢复算法。
The theoretic of radar digital receiver are sampling, signal orthogonal transform, multirate digital signal processing, DSP algorithm with high efficiency, etc.
雷达数字化接收机的理论基础是采样理论、信号正交变换、多速率信号处理以及高效的数字信号处理算法。
In researching GPS anti - jam receivers, since the signal received by the antennas should be transformed into digital signal first, ADC determined the capability and performance of the receiver.
在GPS抗干扰接收机研究中，首先要对天线信号进行模数变换，ADC的性能直接影响接收机抗干扰的动态范围和输出信噪比。
Known are wireless digital communication systems (1) applying an antenna diversity scheme to combat fading in a received signal as received by a receiver in the system.
利用天线分集方案以便在系统中消除接收机接收到的信号的衰减现象的无线数字通信系统(1)是已知的。
The thesis is mainly to study the signal detection and adaptive threshold technique in digital receiver.
本文主要研究数字接收机中信号检测及自适应门限设定技术。
The digital receiver can avoid above problems effectively. It can keep all characters of signals and realize the signal feature extraction, separation and recognition with digital signal processors.
而数字接收机则可以有效避免这类问题，它可以保留信号的全部信息，采用数字信号处理器对输入信号进行特征提取，分选和识别。
Based on data rate conversion technology, wideband digital EW receiver is able to achieve high intercept probability, high sensibility and the ability of approximately real-time signal processing.
建立在数据率转换技术之上的宽带数字侦察接收机要求能够实现高截获概率、高灵敏度、近乎实时的信号处理能力。
We represent a new IM3 phase measurement method which USES digital receiver technology and estimate value of IM3 phase by signal process arithmetic from sampled data.
我们提出了一种新的基于数字接收技术的IM3相位测量的方法，并采用信号处理算法来估计IM3的相位。
To enable playback on an analog TV signal, the satellite TV receiver converts the digital signal into an analog format that a standard television can recognize and playback.
若要对模拟电视信号启用播放，卫星电视接收器需要将数字信号转换为标准电视可以识别和播放的模拟格式。
Then the receiver structure and mathematical model, signal collection chip and fpga-main implementation device of digital down conversion are introduced.
接着介绍了接收机的构成和数学模型、采用的信号采集芯片及实现数字化下变频的主要器件—FPGA。
The front end in a digital broadcasting receiver means the part of circuit that converting RF analog signal to baseband digital data stream.
数字广播接收机前端电路指接收机中完成从射频到基带转换的部分，是决定接收机性能指标的关键部分。
This paper analyzes the digital down conversion (DDC) of wideband reconnaissance receiver IF digital signal based on polyphase filtering.
分析了基于多相滤波结构的宽带侦察接收机中频数字信号下变频处理方法。
However, the invention of FPGA device makes it convenient to realize such a wideband radar signal reconnaissance digital receiver.
FPGA器件的出现，为实现宽带雷达信号侦察数字接收机提供了硬件支持。
By analysis the factors which affect of UHF RFID reader's digital receiver, make it clear between signal noise first time, DC offset and receiver performance.
本文首次提出了影响超高频rfid数字接收机性能的各种因素，明确了噪声和直流偏移干扰对读写器性能的影响关系。
The technologies of signal separation and parameter estimation are the most important technologies of the wide band digital receiver.
从多信号中分离出各信号是宽带数字接收的关键技术之一。
Based on the spread spectrum communication theory, combine digital signal-processing chip DSP and FPGA, this article researches and designs the receiver system for regional radio navigation.
本课题以扩频通信为理论基础，结合目前广泛使用的数字信号处理芯片DSP和FPGA，研究了区域无线电导航系统接收机数字信号处理平台。
The author introduces the design of digital display clock, the time signal received by GPS satellite receiver corrects time automatically after receiving and processing by single chip computer.
介绍一种利用GPS卫星接收机接收的时间信号，经单片机接收处理后进行自动校时的数显时钟的设计。
The chip's function includes transmitter-receiver of LVDS signal and serializer-deserializer of CMOS digital signal.
该芯片的功能包括LVDS信号的收发以及CMOS数据的串并转换。
The chip's function includes transmitter-receiver of LVDS signal and serializer-deserializer of CMOS digital signal.
该芯片的功能包括LVDS信号的收发以及CMOS数据的串并转换。
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