您要查找的是不是：
- phase frequency detecter 鉴频箍相器
- The Continuous Phase Frequency Shift Keying(CPFSK) signaling scheme has been widely used in mobile applications. 连续相位频移键控(CPFSK)信号广泛应用于便携式移动通信系统。
- In this paper, a simple method of plotting logarithmic phase frequency response curve for open-loop systems is advanced. 文章给出了绘制开环系统对数相频特性曲线的简便方法。
- Quantization noise analysis of linear phase frequency sampling FIR filters was discussed, and computation formula for measuring quantization noise was described in this paper. 主要分析了线性相位频率采样FIR滤波器中的量化噪声,并给出计算公式。
- Abstract: This paper describes a clock and data recovery（CDR）circuit for RFID tag, and a new phase frequency detector（PFD） is proposed for this CDR circuit for NRZ data. 文章摘要: 提出了一种适用于射频电子标签的时钟数据恢复电路，在电路中提出了一种适用于NRZ数据的新型鉴频鉴相器电路和自适应控制单元，能动态调节边沿检测器中延迟单元的延迟时间，使此时钟数据恢复电路具有大的锁定范围，且有结构简单易实现的特点。
- A low-cost, highly-accurate GPS carrier phase frequency syntonization system (GPS carrier phase-disciplined oscillator, GPSCDO) based on a single-frequency receiver is presented. 摘要:本论文介绍利用单频接收机及GPS载波相位观测量所组成一低成本且高精度的频率同步系统（GPS载波相位训练振荡器）。
- This thesis proposes a new digital controlled oscillator (DCO) and a new phase frequency detector (PFD) architecture for the all digital phase-locked loop (ADPLL) with low power design. 本论文提出一个新的数位控制频率振荡器及一个新的相位频率侦测器之架构以设计一个低功率的全数位式锁相迴路。
- Phase frequency skip of atomic clock is one of an important factor to restrict accuracy and stability of standard time signal, so its analysis and detection is very important in time keeping work. 原子钟相频跳变是制约标准时间信号准确度和稳定度的关键因素之一,它的分析和检测在守时系统自动化监控中非常重要。
- Theoretical and actual result analyses show that high frequency detection is an effective method in the prediction of carbonate reservoir beds. 理论及实际效果分析表明 ,高频检测是预测碳酸盐岩储集层的有效方法 ,该方法在充分利用地震波的频率信息预测岩性及油藏领域方面开辟了一新思路 ;
- DSO covers the theories of signal pretreatment, data collection, frequency detection, automatic control, analysis of frequency spectrum and data processing. 其中涉及到信号预处理、数据采集、同步触发、测频、自动控制、数据显示和处理、频谱分析等诸多方面的理论。
- Continuous Phase Frequency Shift Keying HFR 连续相位移频键控
- CPFSK Continuous Phase Frequency Shift Keying 连续相位频移键控
- Using Mallat algorithm on the basis of wavelet transform and multiresolution analysis(MRA) in connection with traditional FFT,a new speech signal fundamental frequency detection method is presented. 将基于小波变换与多分辨分析 (MRA)下的Mallat算法与传统的快速傅立叶变换(FFT)相结合 ,提出了一种新的语音信号的基音频率检测方法。
- dual-slope phase frequency detector 双斜鉴频鉴相器
- Methods 25 patients who had foreign body inside the digestive tract but the X-ray exploration was negative, were exarnined with ultrasonic inspection with high and Iow frequency detecting head. 方法对25例有明确异物吞入史,但X线探查为阴性的患者,运用超声高、低频探头对可疑部位进行探查定位。
- phase frequency response characteristic 相位频率响应特性
- The child is going through a difficult phase. 那孩子正经历困难的阶段。
- phase frequency measurement method 相位测频法
- The two sets of traffic lights were out of phase. 那两组交通灯不同步。
- logarithmic phase frequency characteristic 对数相位频率特性
