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- phase frequency spectrum 相位頻譜
- A filter whose transfer function is matched with the frequency spectrum function of input signal. 其傳遞函數與輸入信號的頻譜函數相匹配的一種濾波器。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of uexp( tt/ Pw) Multiply by Carrier with Uniform Phase Noise. 單邊遞減波電壓訊號乘上含有均勻相位雜訊載波之調變訊號時域波形及頻譜。
- The Time Domain Wave Form and Frequency Spectrum of Modulated Signal of Tria(tt/Pw) Multiply by Carrier with Normal Phase Noise. 三角波電壓訊號乘上含有準常態相位雜訊載波之調變訊號時域波形及頻譜。
- Alters the frequency spectrum of signals passing through it. 當通過它時能夠改變信號的頻譜。
- Frequency Spectrum Measurement of Noise of Image Intensifiers[J]. 引用該論文 錢芸生;常本康;童默穎;劉磊.
- The inverted frequency spectrum,in fact, is Fouriers retransform. 倒頻譜是頻域信號的傅里葉再變換。
- 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. 摘要通過對直接數字合成器在鎖相環路中作為分頻器應用的研究,使頻率合成器可以在實現超細頻率解析度的同時達到高的頻譜純度。
- The Continuous Phase Frequency Shift Keying(CPFSK) signaling scheme has been widely used in mobile applications. 連續相位頻移鍵控(CPFSK)信號廣泛應用於攜帶型移動通信系統。
- A system that divides the frequency spectrum of a signal into a number of bands, which are separately transmitted and then recombined. 一種先將一個信號的頻譜分成幾個可獨立傳送的頻帶然後再合成的方法。
- In this paper, a simple method of plotting logarithmic phase frequency response curve for open-loop systems is advanced. 文章給出了繪製開環系統對數相頻特性曲線的簡便方法。
- The entire available frequency spectrum is used with 79 hops of 1Mhz bandwidth, analogous to the IEEE 802.11 standard. 以1Mhz帶寬79跳來利用這個完整的可用頻譜。這類似於ieee 802.;11標準。
- Quantization noise analysis of linear phase frequency sampling FIR filters was discussed, and computation formula for measuring quantization noise was described in this paper. 主要分析了線性相位頻率採樣FIR濾波器中的量化雜訊,並給出計算公式。
- 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號重複在頻譜中造成的峰值增多,並不僅僅局限於水層。
- 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: 提出了一種適用於射頻電子標籤的時鐘數據恢複電路,在電路中提出了一種適用於NRZ數據的新型鑒頻鑒相器電路和自適應控制單元,能動態調節邊沿檢測器中延遲單元的延遲時間,使此時鐘數據恢複電路具有大的鎖定範圍,且有結構簡單易實現的特點。
- Each 1.5MHz frequency spectrum of DAB can transmit six sets of programmes with CD quality. DAB每1.;5兆赫的頻帶可供傳送六套CD音質的節目。
- 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:本論文介紹利用單頻接收機及GPS載波相位觀測量所組成一低成本且高精度的頻率同步系統(GPS載波相位訓練振蕩器)。
- The suggestions on the further research of the frequency spectrum analysis are provided. 就頻譜分析的進一步研究提出了建議。
- Moreover, since the atoms are in random thermal motion the frequency spectrum will be altered by the Doppler effect. 而且,由於原子是在作無規則熱運動,多普勒效應也會使頻譜發生改變。
- Dynamic data exchange ( DDE) techniqueFigures such as space spectrum, frequency spectrum, etc. (2)動態數據交換(DDE)技術