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- PLL automatic frequency tracking 锁相环自动频率跟踪
- Keywords spontaneous potential;disturbance of industry frequency;PLL automatic frequency tracking;dual-integral A/D; 自然电位测量;强工频干扰;锁相环自动频率跟踪;双积分A/D;
- automatic frequency tracking 自动频率跟踪
- Algorithms,such as automatic frequency control(AFC),automatic gain control(AGC),phase-amplitude tracking(PAT),and phase ambiguity detecting (PAD),were jointly used in this scheme. 综合应用自动频率控制(AFC)、自动增益控制(AGC)、相位/幅度跟踪、相位模糊检测等算法,在没有任何训练序列的情况下,能准确地恢复调制信号载波相位。
- This algorithm is applied for carrrier and bit synchronization, AFC (Automatic Frequency Control) of MAX2820. The algorithm comprises of PN acquisition ,PN tracking, leftover carrier estimate and AFC algorithm. 本文中还讨论了零中频直扩系统的基带接收模块,用于载波同步和位同步,提取频偏信息,对射频芯片Max2820进行自动频率控制。 它包括了伪随机码的捕获、跟踪、残留频偏算法以及AFC算法电路。
- It also introduces some key technologies as measurement initialization and frequency tracking in signal processing of Coriolis flowmeter. 介绍科氏流量计信号处理中测量初始化和频率跟踪等几个关键技术。
- It also incluses a phase locking loop (PLL) simulation used for frequency tracking of CMF. 还包括用于频率跟踪的锁相环仿真 ,锁相环可以极好地平滑噪声 ,跟踪频率变化 ,最终用于计算两路信号相位差。
- Frequency tracking and phase synchronous are useful to elim inate the frequency leakage in signal an alysis. 频率跟踪和相位同步,能消除信号分析中的频谱泄漏。
- The process of frequency tracking is described as the problem of searching for one dimension fluctuant extremum. 然后,结合自寻最优自适应控制方法和模糊控制方法。
- The later is mainly caused by frequency tracking and measurement of PMU, the signal filter delay and the digital algorithm. 异地同步方法误差远小于同步测量环节本身的误差 ,后者主要由PMU的频率跟踪与测量、信号滤波延迟以及数值算法等环节引起 ;
- Automatic frequency control (AFC) system is used to adjust the frequency of microwave power source to match the inherent frequency of acceleratory tube. 自动频率控制(AFC)系统用于调节微波功率源输出的微波频率,使之与加速管的固有谐振频率匹配。
- A frequency tracking method is proposed.The synchronism sampling is achieved to improve the measuring precision of frequency and phase difference. 本文提出一种频率跟踪方法,可以在不过零开始采样的情况下,实现整周期采样,保证频率和相位差测量的精度。
- This article introduces the principle of the closed link automatic frequency control system in Z2000 spread spectrum transceiver and how to control it. 本文阐述了Z2000接收机内的闭环自动频率控制系统的工作原理,并说明如何控制这个系统。
- In order to make the RF source and the waveguide have the same resonant frequency,the automatic frequency control(AFC)system is used. 为了使得射频源和波导管的频率保持一致 ,采用了自动频率控制系统 (AFC)。
- The system design method proposed by the paper examines the frequency tracking accuracy of the frequency agile radar synthesis detection unit at intermediate frequency. 本文提出了通过系统设计的方法将频率捷变雷达综合测试仪频率跟踪精度的检定在中频进行。
- The microwave oscillator frequency is locked to the resonant frequency of loaded resonator by means of automatic frequency control (AFC). 微波振荡频率用自动频率控制 (AFC)的方法自动锁在有载腔的频率上 .
- TheSPM-D10 synchronizer provides automatic frequency, phase and voltagematching using either analog or discrete output bias signals. 该扫描探针显微镜-D10的同步器提供了自动频率,相位和电压匹配使用模拟或离散输出偏置信号。
- It is unnecessary to use frequency conversion adjustment because it is designed with full digital press frequency tracking circuit and good adaptability. 全数字式压频跟踪电路设计,良好的自适应性,无须变频调节;
- Introduced a kind of new method by means of frequency track method to measure cutting power of woodworking machines. 介绍了一种用频率跟踪法测量木工机床切削功率的新方法。
- In addition, overlap - adding ( OLA) technique and frequency tracking technique are presented in order to improve the articulation of synthetic waveform. 在编码处理过程中,我们应用了语音叠加技术和频率轨迹跟踪技术,以提高合成语音的清晰度。