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- phase frequency spectrum 相位频谱
- A filter whose transfer function is matched with the frequency spectrum function of input signal. 其传递函数与输入信号的频谱函数相匹配的一种滤波器。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of uexp( tt/ Pw) Multiply by Carrier with Uniform Phase Noise. 单边递减波电压讯号乘上含有均匀相位杂讯载波之调变讯号时域波形及频谱。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of Tria(tt/Pw) Multiply by Carrier with Normal Phase Noise. 三角波电压讯号乘上含有准常态相位杂讯载波之调变讯号时域波形及频谱。
- Alters the frequency spectrum of signals passing through it. 当通过它时能够改变信号的频谱。
- Frequency Spectrum Measurement of Noise of Image Intensifiers[J]. 引用该论文 钱芸生;常本康;童默颖;刘磊.
- The inverted frequency spectrum,in fact, is Fouriers retransform. 倒频谱是频域信号的傅里叶再变换。
- Through the research of direct digital synthesizer (DDS) used as a divider in phase lock loop (PLL), a frequency synthesizer with small frequency resolution ratio and high purity frequency spectrum can be realized. 摘要通过对直接数字合成器在锁相环路中作为分频器应用的研究，使频率合成器可以在实现超细频率分辨率的同时达到高的频谱纯度。
- 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。
- A system that divides the frequency spectrum of a signal into a number of bands, which are separately transmitted and then recombined. 一种先将一个信号的频谱分成几个可独立传送的频带然后再合成的方法。
- 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 entire available frequency spectrum is used with 79 hops of 1Mhz bandwidth, analogous to the IEEE 802.11 standard. 以1Mhz带宽79跳来利用这个完整的可用频谱。这类似于ieee 802.;11标准。
- 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。
- Peaking in the frequency spectrum due to repetition of signals by multiple reflection is not confined to water layers. 多次反射波引起的信号重复在频谱中造成的峰值增多，并不仅仅局限于水层。
- 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。
- Each 1.5MHz frequency spectrum of DAB can transmit six sets of programmes with CD quality. DAB每1.;5兆赫的频带可供传送六套CD音质的节目。
- 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 suggestions on the further research of the frequency spectrum analysis are provided. 就频谱分析的进一步研究提出了建议。
- Moreover, since the atoms are in random thermal motion the frequency spectrum will be altered by the Doppler effect. 而且，由于原子是在作无规则热运动，多普勒效应也会使频谱发生改变。
- Dynamic data exchange ( DDE) techniqueFigures such as space spectrum, frequency spectrum, etc. （2）动态数据交换（DDE）技术
