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- phase frequency curve 相频曲线
- 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。
- The general form or a quantity indicative of the general form of a statistical frequency curve near the mean of the distribution. 峰度一种统计频率曲线接近分布中心时的大致状态或指示这种状态的数量
- 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。
- 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）。
- The distribution of zero and pole is analyzed to obtain several features of carotid sclerosis such as rp.These features differ from those based on the maximum frequency curve and are also efficient. 接着，本文从多普勒音频信号的建模出发，建立颈动脉血管的零极点模型，分析极点的分布情况，提取一定的特征参数作为血管硬化的判据（如rP等），从而为临床诊断服务。
- 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。
- Distribution curve cumulative frequency curve 分布曲线;分配销售曲线重复计算
- The method quantifies the system robustness based on cumulative frequency curves. 该方法能以累积频率曲线的形式直观地对任意性能水平下不同控制系统的鲁棒性能进行比较；
- Discussion on Establishing Sediment Frequency Curve 关于建立泥沙频率曲线问题的探讨
- relative cumulative frequency curve 相对累积频率曲线
- amplitude versus frequency curve 振幅频率特性曲线
- ogive cumulative frequency curve 累积频数曲线
- The Researching of plotting Logarithmic Phase Frequency Response Curve 关于绘制相频图的研究
- differential size frequency curve 微分粒度频率曲线
- Continuous Phase Frequency Shift Keying HFR 连续相位移频键控
- The child is going through a difficult phase. 那孩子正经历困难的阶段。
