Built-in frequency receiver, adjustable frequency.
内置频率接收机，频率可调。
The introduction of medium frequency receiver theory;
介绍中频数字接收理论；
The main content of this article includes:(1) The introduction of Radar Medium Frequency Receiver;
本文的主要工作包括：（1）介绍雷达数字接收机的概念；
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。
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。
GPS carrier phase integer ambiguity fast resolution is still the key issue and challenge for high accuracy survey and navigation, especially for single frequency receiver.
对于高精度测量和导航，GPS载波相位整周模糊度的快速求解仍然是一个难点，尤其对于单频接收机。
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。
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。
BAE Systems will develop a new radar warning receiver prototype that can identify radio frequency and communications activity in real time.
BAE系统公司将开发一种新型雷达预警接收机原型，该原型能实时识别无线电频率和通信活动。
According to the principle of view the Doppler frequency detection, the detector makes up of the transmitter, the transfer circuit, receiver and signal processing circuit.
根据多卜勒频偏检测原理，该探测器由发射机、转换电路、接收机和信号处理电路构成，发射信号是设计的关键。
The most critical causes yielding the ISI as well as ICI are symbol timing and carrier frequency offset which are occurred in the OFDM receiver.
而产生ISI和ICI的主要原因是在OFDM系统接收端产生的符号定时偏差和载波频率偏差。
This paper presents a design of Adaptive-Bandwidth Frequency Synthesizers used in single chip FM receiver system.
本文介绍了应用在单芯片FM接收系统中可变带宽频率综合器的设计。
The results show that the developed antenna choke ring can effectively reduce the multi-path effects and can improve the interference-resistant ability of the single frequency GPS receiver, NTSCGPS-1.
结果表明，研制的天线扼流圈可有效地削弱多路径效应的影响，并可明显地改善单频GPS接收机ntscgps - 1的抗干扰能力。
In this paper, a blind multiuser receiver for frequency-selective fading channel based on subspace tracking has been presented.
提出一种基于信号子空间估计，用于频率选择性衰落信道的盲多用户自适应接收机。
Element position error, mutual coupling between elements, and the difference in frequency responses of receiver channels influence directly the performance of array radar signal processing.
阵元位置误差、阵元间互耦的影响、接收机通道的频率响应的差异都直接影响着雷达阵列信号处理的性能。
The estimated channel frequency response can improve the performance of the iterative receiver.
这样估计的信道频响可以提高软信息迭代接收的性能。
Finally, simulation models of FH transmitter, receiver and jammer are presented. The influence of frequency excursion on performance of multi-tone continuous wave jamming is analyzed.
最后给出了跳频通信发信机、接收机以及干扰机成员的仿真模型，分析了频率偏移对多频连续波干扰性能的影响。
There is great Doppler frequency shift under high dynamic circumstances, thus the common GPS receiver cannot work reliably without the help of inertial navigation devices.
高动态环境存在较大的多普勒频移，这使得普通的GPS接收机在没有惯导辅助的情况下很难可靠工作。
Instantaneous frequency measurement (DIFM) receiver is one of important component part of EW system.
瞬时测频接收机是电子战系统的重要组成部分之一。
To simulate the process of reconnaissance and frequency guidance, a subsystem is made up of a searching receiver and the jammer, microcomputer and the special interfaces.
其中电子侦察和频率引导过程由搜索接收机、干扰机、计算机和专用接口等组成模拟自动频率引导的子系统。
Due to steady phase error, low-order PLL has a trouble in tracking frequency ramp signals, so that the receiver cannot lock carrier signals.
低阶锁相环跟踪频率斜升信号时产生的稳态相差致使环路失锁，接收机无法锁定载波信号。
The Doppler frequency shift, the main factor restricting the bandwidth of receiver in inter satellite laser link, with orbit equations is calculated.
从轨道方程出发，对影响卫星光链路接收机带宽的主要因素———多普勒频移进行了研究。
A quasi-adaptive frequency synchronous mechanism based on an orthogonal sinusoidal correlation receiver is proposed.
在正交正弦相关接收机基础上提出了一种准自适应频率同步方法。
When realizing kinetic GPS differenced positioning using single frequency GPS receiver, the decision of integer ambiguity of phase observation is rather difficult.
利用单频GPS接收机进行实时动态差分时，相位观测值整周模糊度的实时确定比较困难；
Aiming at the disadvantages of analog frequency estimation in traditional receiver, this article proposes an algorithm of digital frequency discrimination based on distributed arithmetic.
针对传统接收机中模拟鉴频方法的缺点，提出了一种基于分布式算法的数字鉴频方法。
The frequency domain electric transmitter and receiver synchronization electrocircuit has been designed. It is concluded that the GPS time synchronization is feasible in this instrument.
设计了在频率域电法勘探中发送机与接收机GPS时间同步电路，实现了多频激电仪接收机与发送机的精确时间同步进行高精度相位测量。
If your receiver isn't precisely tuned to the frequency of the signal, the static interferes with the subtleties of whatever is being transmitted.
如果你的接受器没有准确地调到那个信号的频率，所传递的讯号细节就会受到杂音的干扰。
And the application in intermediate frequency digital receiver proves this software system's efficiency and dependability.
在中频数字接收系统中的应用验证了此软件系统的效率和可靠性。
This paper introduces the use of polynomial fit in compensation for frequency response of a receiver, a good result is got, and the polynomial fit is a very useful tool.
通过介绍作者在工作中使用多项式拟合进行接收机频响补偿并取得的良好效果，说明多项式拟合是一种非常有用的工具。
Therefore, system acquisition performance can be improved if diversity receiver is adopted for the frequency-selective fading channel.
因此在频率选择性衰落信道中，采用分集接收可以改善系统的捕获性能。
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