Phase locked loop technique offers a way to resolve this problem.
锁相式频率合成技术提供了解决这一问题的思路。
Interspike interval (ISIH) presented the characteristics of phase locked.
放电具有相位同步的特征。
The location of vortex breakdown was recorded using phase locked photography technique.
流动显示图形采用相位锁定照相记录。
It also give an improved method for PLL (phase locked loop) to extract coherent carrier.
本文还对相干载波提取中的锁相环提出了一种改进方法。
The phase jitter of output signal of the PLL( phase locked loop) frequency doubler is analyzed.
定量分析了数字式锁相倍频器输出信号的相位抖动。
This paper introduces a method of FSK modulation and demodulation using CMOS phase locked-loop chip CD4046.
文章介绍了一种利用CMOS锁相环芯片CD 4046实现FSK信号调制与解调的方法。
An automatic accurate synchronization control scheme which adopts phase locked loop principle is presented.
利用锁相环路原理提出锁相自动准同期控制方案。
The basic working principle and the crucial parameters of phase locked synthesizer are introduced in this paper.
介绍了锁相式频率合成器的工作原理以及频率合成器关键的性能指标。
Anovel approach to implement symbol timing recovery is presented which USES a hybrid digital phase locked loop (HDPLL).
本文介绍了一种利用混合数字锁相环(HDPLL)实现码元定时恢复的新方法。
Then presented the basic structure, phase model, frequency response and performance analysis for noise and spur, of phase locked loop (PLL).
然后介绍了锁相环(PLL)的基本结构、相位模型、频率响应、噪声及杂散性能。
Therefore , the subject is to study the design theory and engineering realization of the low phase-noise phase locked source in microwave band.
在这样的背景下,本课题对低相位噪声微波锁相源的设计理论和工程实践进行了研究。
In the process of signal digital intermediate-frequency received, digital down convertion, frequency tracking of carrier and phase locked loop are the keys.
在信号的中频数字接收过程中,数字下变频、载波频率与相位跟踪是设计的关键所在。
Because of the fading characteristic in troposcatter channel, the mechanism of traditional phase locked loop is difficult to achieve the effect in troposcatter communication.
由于对流层散射信道存在严重的衰落现象,故而传统的锁相环机制在散射通信中往往难以奏效。
Two kinds of signal processing methods for heterodyne interferometer, phase locked frequency demodulation and combinatorial frequency demodulation are presented in this paper.
介绍了两种激光外差干涉信号的处理方法锁相频率解调法及组合频率解调法。
The primary factor affecting fast phase lock is analyzed by using MATLAB. Then a fast all digital phase locked loop with a high precision automatic modulus control is proposed.
应用MATLAB分析了影响锁相环快速锁定的主要因素,提出了一种具有高精度自动变模控制的快速全数字锁相环。
The controller make up of TMS320F2812 DSP chip, detecting circuits include sampling circuit, modulate circuit and phase locked loop and other periphery control and drive circuit.
本文设计的控制器以TMS320F2812DSP芯片为核心,加上检测电路(包括采样电路、调理电路、锁相环等)和其它外围控制和驱动电路构成。
According to transfer functions of the loop filter and the single phase locked loop system, it figures out the loop filters parameters, and introduces the selection of loop bandwidth.
根据环路滤波器传递函数以及单环锁相系统的传递函数,计算出环路滤波器的各个参数,并介绍了环路带宽的选择。
He found that the length of time the children's brains spent in both the stable phase-locked states and the unstable phase-shifting states correlated with their IQ scores.
他发现儿童大脑停留在稳定锁相状态和不稳定相移状态下的时间和他们的IQ成绩有关。
The application of phase-locked and synchronous detection reduce the cost of the whole system and improve the sensitivity. Carrier signal and modulation signal achieve entirely synchronous too.
这种采用锁相技术、同步检波的原理,降低了整个系统的成本,提高了灵敏度,并使得载波信号与调制信号完全达到同步。
A fast all digital phase-locked loop with automatic modulus control is presented.
提出了一种具有自动变模控制的快速全数字锁相环。
This paper introduces the theory of the phase-locked loop (PLL) and the direct digital synthesis (DDS), a method to improve the precision of DDS and reduce its phase truncation error is also given.
介绍了锁相环(PLL)技术和直接数字式频率合成(DDS)技术的基本工作原理,给出了一种提高DDS输出频率精度及减小其相位截断误差的方法。
The design and implementation of quadrature waveform generator are described based on the AT89C52, phase-locked loop(PLL) and switched-capacitor filter(SCF).
描述了基于AT89C52单片机、锁相环和开关电容滤波器的正交信号发生器的设计和实现方法。
In this thesis the basic architecture and the performance evaluation of phase-locked loop are presented.
本文研究了锁相环的基本结构与系统构架及其性能优劣。
Introduces the basic principle of phase-locked loop and NE564 PLL circuit structure and properties, and the use of phase-locked NE564 demodulating circuit and phase-locked frequency circuit.
介绍了锁相环的基本原理和锁相环ne564的电路结构和性能,及其用ne564构成的锁相解调电路和锁相倍频电路。
The software phase-locked loop (SPLL) technology in the steady speed control of permanent magnet brushless DC motor (BLDCM) in gyro was discussed.
研究了软件锁相环技术在陀螺用无位置传感器无刷直流电机稳速控制系统中的应用。
The paper studies digital control scheme of resonance inverter frequency-tracking based on all digital phase-locked loop.
本文主要研究了基于全数字锁相环的谐振型逆变器频率跟踪的数字化控制方案。
Aiming at the existing problem in harmonics measurement of power system, the paper (presented) a collecting method based on frequency multiplication phase-locked.
针对电力系统谐波测量方法存在的问题,提出了一种基于锁相倍频采集方法。
According to the theory of phase-locked loop, we use reflected photoelectric sensor to carry out the color recognition.
根据锁相环的原理,使用反射式光电传感器实现了系统的颜色识别。
According to the theory of phase-locked loop, we use reflected photoelectric sensor to carry out the color recognition.
根据锁相环的原理,使用反射式光电传感器实现了系统的颜色识别。
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