single frequency channel 中文意思是什麼

single frequency channel 解釋
單頻通路
  • single : adj 1 僅只一個的，單獨的；單式的；【植物；植物學】（花等）單瓣的；【無線電】單工的，單次的。2 獨...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • channel : n 1 水路，水道，渠，溝；海峽；河床，河底。2 （柱等的）槽，凹縫；【機械工程】槽鐵，凹形鐵。3 〈比...
  1. To utilize the advantages of dsp chips, the system should be computing sources economical. according to digital signal processing theory, the poly - phase fir can help reduce the workloads of the ddc / duc. therefore, adding the complex carrier mixers, the channelization system ( a method of using a single wideband facility to transmit many relatively narrow - bandwidth signals. by subdividing the frequency spectrum used in the wideband channel ) can be formed utilizing the characters of fft

    為了使開發出的軟體可以適用於高速dsp器件開發，節省系統資源，課題首先從數字信號處理的理論進行分析，得出可以利用抽樣率轉換的數字濾波器的特點，即多相濾波實現數字上下變頻計算負擔的減小，之後進一步將多相濾波器與頻譜搬移部分結合，通過公式的推導，得出可利用快速傅立葉變換的特點實現多路信號的通道化發射和接收的處理模型。
  2. The major job is manufactured a transmitter, which has three upmixer channels. its function is to up convert the signals from c - band to ka - band. the input local oscillator is provided by a low frequency crystal oscillator which has a good performance of phase noise, through 512 times multiply to ka band. this sysetem is used in the laboratory as transmitter source of the fuze, for the multidimensional objects in practise, which lead to the complexity of the reflect signal, so the amplitude, frequency and the phase of the transmit signals both have a key role in dealing with the reflection signals. therefore, this system requires for both the coherence of the single channel ’ s amplitude, phase and multi channels

    本文的主要工作是應用戶要求製作一具有三發射通道的上變頻系統，可以將c波段的微波信號上變頻到ka波段的毫米波信號。系統的本振輸入基頻由一相位噪聲非常好的低頻率晶振提供，經過512次的倍頻放大至ka波段。本系統作為實驗室中引信的發射源，由於目標反射信號具有時變的多維性，反射信號變得極為復雜，在信號處理時，不僅信號幅值、頻率有決定意義而且相位關系也很有決定意義。
  3. Channel estimation in single - carrier frequency domain equalization system

    多載波通信系統中的應用
  4. Specification for simple telex terminals using single channel voice frequency signalling for connection to british telecommunications telex network

    聯接于英國電信電傳網路的單頻道音頻信號用簡易電傳終端規范
  5. Agilent 53181a rf counter optimized for rf applications, the single - channel 10 digit s 53181a measures frequency, period and peak

    使用先進的事件和時間間隔計數技術， agilent 53131a與傳統的例數計數器相比可採集到更
  6. Single chip needs too much time to calculate and we ca n ' t detect power quality real time for example, and the sampling rate must synchronize the signal frequency. when sample multi - channel signal in turn, it must have time delay between two samplings, so the phase angle difference between each channel signal is ca n ' t be avoid and so on. those problems must be solved

    本課題分析了目前電能質量的各種檢測方法，認為快速傅氏演算法（ fft ）是首選方法，但是基於定時采樣的fft計算會產生頻譜泄漏，為了減少這個泄漏需要進行加窗處理，這需要增加采樣數據，導致顯著增大計算量。
  7. In the third section, the simulation on music direction finding and the influence that is caused by snr, space between antennae, signal frequency and channel mismatch is analyzed. according to the single known - direction source calibration method, the channel mismatch is calibrated

    第三部分介紹了music測向基本原理，詳細分析了信噪比、陣元間距、通道失配等因素對其測向結果的影響，並利用單信號有源校正方法，對通道失配進行了校正，提高了測向精度。
  8. Over multiple - path fading channel, a novel iterative single - tone interference suppression scheme is proposed for convolutionally coded system in the single - tone interference environment. the iterative receiver is based on the combination of iterative single carrier frequency domain equalization and interference rebuilding and cancellation

    該方法利用衰落通道下單音信號的頻域特性，對干擾信號進行重建及干擾抵消，同時，結合單載波頻域均衡迭代檢測技術，實現衰落通道中的聯合單音干擾抑制及信號檢測。
  9. At the beginning of this thesis, we introduce the fundamental of the acoustics and the perceptual mechanism. next, different kinds of speech processing methods including time processing and time - frequency analysis are presented, such as short time average energy, short time cross zero analyses, short time autocorrelation function analyses and fft. at last, we focus on the sound separation, especially on single channel sound separation

    在這篇文章開始的部分，我們介紹了聲學的基礎知識和人類聲音感知的機理;接下來，我們給出了在時域處理和頻域處理語音信號的一些經典的技術，比如短時平均能量分析、短時過零分析、短時自相關函數分析、快速傅立葉變換等;本文重點從理論和實驗上討論語音分離，特別是單聲道語音分離的演算法及其在分離音樂鼓點中應用。
  10. Each channel remains at an assigned frequency within a single band

    每個通道在單一的頻段內保持分配的頻率。
  11. The method of using a single wideband facility to transmit many relatively narrow - bandwidth signals by subdividing the frequency spectrum used in the wideband channel

    使用單個寬帶設備傳送許多窄帶信號的方法。它是通過細分寬帶通道上的頻譜來實現的。
  12. Comparison between ofdm and single carrier modulation with frequency domain equalization base on the jake channel model

    最後分別就兩種自適應均衡演算法
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