正交信號 的英文怎麼說

中文拼音 [zhēngjiāoxìnháo]
正交信號 英文
originating signal
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 交 : Ⅰ動詞1 （把事物轉移給有關方面） hand over; give up; deliver 2 （到某一時辰或季節） reach （a cert...
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  1. The profit signal and noise vectors are orthogonal to each other, so the variation vector is the hypotenuse in a right triangle

    有效信號適量和噪聲信號適量相互正交，所以變量矢量是直角三角形的斜邊。
  2. In sar system, the in - phase and quadrate echoes must be sampled simultaneity and stored for a long - time. because of the limitation of hardware, only the available echoes can be stored

    Sar系統對數據採集和存儲處理需要滿足對正交兩路（ i / q ）雷達回波信號的數據同時採集，並實現高速傳輸和大容量長時間實時存儲。
  3. Fast algorithms of both discrete and orthonormal wavelet and wavelet packet coefficient are diagrammatized to be introduced. daubechies wavelet is applied to help to discuss the application and test on signal filtering and noise reduction with the principle and threshold implementation ; the basic principle to pickup the fault characteristics is introduced mainly about the relations between the maximum module and signal saltation point and how to characterize the saltation point with lipschitz exponent

    展示了離散正交小波變換的mallat快速演算法和小波包系數分解的快速演算法；重點應用daubeches小波探討了小波變換在信號濾波去噪中的應用和實驗，闡述了其基本原理和通過閾值化處理實現濾波的具體方法；探討了用小波變換進行故障特徵提取的原理，說明了小波變換模極大值和信號突變點之間的關系以及怎樣用李氏指數來表徵突變點的性質。
  4. The algorithm principle, hardware design and software design of the scheme are proposed and experimentally demonstrated ; the main contents of this thesis are as follows : firstly, we study the principle of the fiber optic weak magnetic sensor based on magnetostrictive effect. after analyzing the characters of the magnetic field sensing signals, we know that the magnetic field sensing signals ’ fundamental component is proportional to input dc magnetic field

    敘述了該方案的原理、軟硬體設計過程，並通過實驗進行了驗證，本文主要內容如下:首先，研究了基於磁致伸縮效應的光纖微弱磁場傳感器傳感原理以及輸出信號的特徵，分析得出在干涉儀處于正交工作點時，傳感器輸出信號的基頻分量與被測直流磁場成正比關系。
  5. In the thesis, a signal processing scheme of polarization - insensitive fiber optic michelson interferometric magnetic sensor is described : making the interferometer work near the quadrature with closed loop controlling working point method, the fundamental frequency component of the magnetic field sensing signals can be detected to measure the input direct current ( dc ) magnetic field by phase sensitive demodulation

    本文主要介紹了偏振無關光纖michelson干涉型微弱磁場傳感器信號處理的方案:通過閉環控制工作點演算法使干涉儀工作在正交工作點處，再利用相敏檢波演算法提取傳感器輸出信號的基頻分量，以測量直流磁場的大小。
  6. The if digital receiver based on software radio technology adopts the structure of fpga plus dsp, which is more powerful than other systems in signal processing, and is able to complete iq demodulation accurately and acquire characteristic of the signal. the following four aspects is included :

    該中頻數字接收機以軟體無線電思想為核心，採用dsp + fpga的硬體結構，在信號處理能力方面比以往的系統有了很大的提高，能夠精確的完成信號正交解調和抽取濾波和特徵信息的提取。
  7. The balanced multiwavelet was studied. for low - pass matrix filter p ( ), the orthogonal matrix r was selected to ensure the constant signal as a characteristic signal of balanced low - pass matrix filter rtp ( ) r, the corresponding balanced high - pass matrix filter is q ( ) r or rtq ( ) ) r which maintain the orthogonality and symmetry or orthogonality only respectively. as an application, the optfr - multiwavelet constructed by jiang was balanced and applied to image denoising and fusion

    研究了多小波的平衡處理，對低通濾波器p （ ）一般選擇平衡器為正交矩陣r ，使得常數信號成為平衡后的低通濾波器r ~ tp （ ） r的特徵信號，若要保持矩陣濾波器的正交性和對稱性，可選擇平衡后的高通濾波器為q （ ） r ；若只保持多小波的正交性，可選擇高通濾波器為r ~ tq （ ） r 。
  8. The two chromatic aberrations were separated from chrominance signal adopting square demodulation

    採用正交解調的方法實現了兩種色差信號的分離，並完成了該電路的設計。
  9. When the cur - cuit resets, the chip remains accepting state, works in burst mode, and adopts dpsk modulation mode. it proceeds quadrature - sampled intermediate frequency signal after the ad9057 has converted, then down - converses, despreads and demodulates. the demodulated baseband signal will be sended into scm to dispose through interrupt

    上電復位后，晶元處于接收狀態，工作在突發模式下，採用dpsk調制方式，將ad9057轉換完的中頻信號進行復正交取樣後下變頻、解擴、解調，通過中斷將解調完的基帶信號送入單片機處理；處于發送狀態時，可將數據擴頻、調制，經ad9768送出。
  10. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  11. First, how to conduct sample and quantification of continuous time signal which is prior condition of sdr is explored in detail, and the comparison and analysis of some sample modes are given in which band pass signal sampling theorem is most important. second, multi - sample rate signal processing which is an important basis of sdr is studied. emphasis are put on decimation and interpolation those are the most fundamental process and the realization of decimation and interpolation filter

    在基於中頻采樣的軟體無線電結構框架下，首先詳細探討了軟體無線電的前提條件，即如何對連續時間信號進行采樣量化，比較分析了幾種采樣的方式，其中最為重要的是帶通信號采樣定理；然後探討了軟體無線電的一個重要基礎，即多采樣率信號處理，重點討論其最基本的兩個過程抽取和內插以及抽取器和內插器的實現；接著介紹了結構簡單、適用於一級抽取的cic濾波器和適用於做2倍抽取的半帶濾波器；再次論文在總結了傳統的調制解調基礎上，結合軟體無線電器件的特點，系統的探討並實現了基於正交思想的am 、 fm 、 ask 、 fsk 、 bpsk 、 qpsk的正交調制解調演算法。
  12. Incandescent light bulbs, introduced in the late 1870s, are slowly being displaced in the developed world by more energy - efficient light - emitting diodes ( leds ), in applications from traffic lights to domestic lighting

    在發達國家裡，從交通信號燈到家用照明燈，節能型led燈正慢慢地取代19世紀70年代末引進的白熾燈。
  13. It is especially attractive for the downlinks and suppressing intercell mai. when multiuser detector is adapted in blind mode, it usually adopts eignvalue decomposition or singularvalue decomposition of received sample correlation matrix and tracking alrithgms, which result in high computational complexity. at the same time, approximation computation in tracking alrithgms also result in slow convergence

    為實現盲自適應檢測，通常採用對接收信號樣本矩陣進行特徵值分解（ evd ）或奇異值分解（ svd ）后進行跟蹤，由此帶來的子空間秩跟蹤使得實現復雜度很高；另一方面，在跟蹤演算法中考慮一些實際情況而作出近似處理，從而引起誤差積累和正交性誤差，導致每次跟蹤開始階段跟蹤速度變慢。
  14. However, while bringing us a lot of benefits, it raises requirements for network interworking. as is shown in figures 1 and 2, if the order of the 2 mbits time slots is inconsistent on the 155 mbits paths, disorder will take place when these paths are interconnected, thus making impossible the functioning of the point - to - point 2 mbits links. hence the unification of the arrangement of the time slots of 155 mbits signals throughout the network

    正像圖1 、圖2中所示開通交換機中繼電路的情況，如圖中155mbits通路2mbits時隙排列不統一，在互連時就會造成2mbits時隙混亂，難以開通點到點2mbits鏈路，因此全網155mbits信號時隙必須統一排列規則，才能保證業務的順利開通，方便網路的維護。
  15. The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above

    但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾，同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術（ orthogonalfrequencydivisionmultiplexing ， ofdm ）正是一種解決符號間干擾的有效傳輸手段，因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感，如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的，本論文將重點針對這兩個問題進行討論。
  16. A x - band five - cavity tro is designed. with the voltage 760kv, the current 6ka and the magnetic field 2. 6t in the simulation, it ' s output power is about 1. 2gw

    小信號理論分析得出只有3 / 6模與電子束與電子束有負能量交換，其它四個模式電子束有正能量交換。
  17. 3 ) the optical fiber sensor used hi oil contamination measurement is also developed. some key techniques such as selection of light source and photoelectric cell, designs of measurement set and flow cell are analyzed. a new orthogonal optics has been presented and virtually improved the reliability of test data

    3 ）研製了測量油液污染度的光纖傳感器，分析了光路設計的各種關鍵技術（如光源、光電接收管的選擇、測量光路和樣品池的設計等） ，設計了正交光路光學系統，有效地提高了檢測信號的可靠性。
  18. And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion

    論文首先描述了數字電視地面廣播的需求條件，技術難點和目前存在的問題，並重點分析了dvb - t系統結構流程，核心技術及系統通道特性和參數，該系統採用了cofdm （編碼正交頻分多路復用） ，大量導頻信號插入和保護間隔技術等核心技術，使之能抵抗高電平（ 0db ） ，長延時的靜態和動態多徑失真，有利於數字和模擬電視的混合傳輸，它的多載波調制模式功能和性能在移動和便攜接收、同頻網等方面具有獨特的優勢。
  19. Orthogonal signal correction ( osc ) is provided a novel spectral pre - processing method in recent years, which is based on the orthogonal projection

    基於正交信號投影分解的正交信號校正（ osc ）方法，是近年來在化學計量學領域中提出的一種全新數據預處理方法。
  20. 3. northern analysis revealed the expression of sod2 mrna in t3 plants of several non - segregation transgenic lines while no signal was shown in wild type plants. several samples of transformants were self pollinated, and progenies from transformed and non - transformed plants ( controls ) were evaluated for salt tolerance

    Northern分析表明轉基因植株均有雜交信號，野生型植株無明顯信號，進一步說明sod2基因整合到擬南芥的基因組后已正常轉錄表達，由信號的強弱來看，表達量有明顯的不同，可能與整合的外源基因的拷貝數相關。
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