相移編碼 的英文怎麼說

中文拼音 [xiāngyíbiānmǎ]
相移編碼 英文
phase shift coding
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 移 : Ⅰ動詞1. （移動） move; remove; shift 2. （改變; 變動） change; alter Ⅱ名詞（姓氏） a surname
  • 編 : Ⅰ動詞1 （編織） weave; plait; braid 2 （組織; 排列） make a list; arrange in a list; organize; gr...
  • 碼 : Ⅰ名詞（表示數目的符號或用具） a sign or object indicating number; code Ⅱ量詞1 （指一件事或一類的...
  • 編碼 : encoded; code; coded; encrypt; codogram; coding編碼表 encode table; 編碼程序 builder; 編碼尺 code...
  1. This sequence emergences fourteen times from 1000 ests library indicts that it is a middle affluently gene in cdna library. the cdna of 634 basepairs contains an open reading frame of 339 nucleotides encoding a novel nonspecific lipid transfer protein. the first 23 amino acids constitute the putative signal peptide, characteristic for targeting to the secretory pathway

    測得th - nsltp序列全長為634bp ，含有一個非特異性脂轉移蛋白與植物耐逆性的相關性研究編碼112個氨基酸的閱讀框架， n端的23個氨基酸組成一段信號肽序列，表明它可能和分泌有關。
  2. En iso eic 13818 - 1 information technology. generic coding of moving pictures and associated audio information. part 1 : systems

    信息技術.移動圖像和相關音頻信息的一般編碼.第1部分:系統
  3. At first, based on the simple genetic algorithm, an improved ga which adopts a combination of emigration policy and adaptive operator is presented. results of numerical optimization show that the improved ga is effective on preventing premature problem

    本文在基本遺傳演算法的基礎上首先研究了浮點編碼遺傳演算法在數值優化中的應用，通過引進「移民策略」和自適應運算元相結合的方法，改進了基本遺傳演算法在後期進化緩慢的問題，極大地減少了早熟性收斂的現象。
  4. Study on pal - line 90 phase - shifted encoding signal

    移相編碼信號的研究
  5. In this dissertation, the researches on the application of cdma in fiber - optic communication systems have been reviewed, and several key techniques in the application are proposed with theoretical analysis. in traditional researches and applications of the hfc cdma communication system, the gold sequence was used as the users " address code. in this paper, we analyze the characteristics of the m sequence in detail

    本文突破了以往在hfc系統中使用cdma擴頻技術通信時，通常都採用gold序列來作為地址碼的慣例，分析和提出了在hfc的特定環境中，使用同一m序列在某時刻具有的不同相移序列，來構成一個小區的地址編碼，能夠達到多用戶通信時比使用gold序列進行通信具有更好的相關特性。
  6. It can directly control and drive the stepmotor and dc servomotor, and it can control the ac servomotor by controlling the ac transducer, and it also has the function of detecting the feedback position signal of photoelectric coder and induction phase shifter

    它能直接控制和驅動步進電機和直流伺服電機，並可通過控制交流變頻器對交流伺服電機進行控制，而且具有光電編碼器和感應移相器位置反饋信號檢測功能。
  7. At the aspect of hardware design, it adopts pulse distributor and the technology of single polar voltage drive to accomplish the function of controlling and driving stepmotor ; it adopts the technology of pulse width modulation and cmos h - bridge drive to accomplish the function of controlling and driving dc servomotor ; it adopts d / a convertor to accomplish the function of controlling ac transducer ; it adopts the technology of digital phase detection to accomplish the function of detecting the feedback position signal of induction phase shifter ; it adopts dsp ’ s capture cell to accomplish the function of detecting the feedback position signal of photoelectric coder

    硬體方面，採用脈沖分配器和單極性電壓驅動技術實現了步進電機的控制和驅動功能;採用脈寬調制技術和cmos互補h橋驅動技術實現了直流伺服電機的控制和驅動功能;採用d / a轉換器實現了交流變頻器的控制功能;採用數字化相位檢測技術實現了感應移相器位置反饋信號的檢測功能;採用dsp的捕獲單元實現了光電編碼器位置反饋信號的檢測功能。
  8. This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer

    本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上，討論了幾種採用典型調制技術的短波數傳系統（如時頻調制、多進制頻移鍵控慢跳頻、 chess系統）原理、優缺點以及抗衰落和抗符號間干擾的性能；分析了自適應串列數傳系統抗短波通道衰落和多徑干擾的原理、關鍵技術；在本文的最後引入一種有望解決短波數傳系統低效率狀況的調制方式bcm -分組編碼調制，給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳系統方案，並通過計算機模擬進行了初部驗證。
  9. Second, research and analyze the feature of signal of pulse compression radar, and discuss the principle and characteristic of pulse compression technique, that are linear frequency modulation and phase coding. the above two mathematic model is constructed, and shift - frequency noise is imposed on the models, and anti - nose ability is evaluated and simulated

    通過對脈沖壓縮雷達的信號特徵的研究和分析，通過研究線性調頻和相位編碼脈沖壓縮技術的原理和特點，建立了這兩種雷達的數學模型，並對此進行移頻干擾和相位編碼雷達干擾，並進行干擾性能的評估和模擬研究。
  10. Information technology - coding of moving pictures and associated audio for digital storage media at up to about 1, 5 mbit s - video

    信息技術. 1 . 5mbit s以內數字存儲介質用移動圖像和相關音頻編碼.視頻
  11. Information technology - coding of moving pictures and associated audio for digital storage media at up to about 1, 5 mbit s - audio

    信息技術. 1 . 5mbit s以內數字存儲介質用移動圖像和相關音頻編碼.音頻
  12. Information technology - coding of moving pictures and associated audio for digital storage media at up to about 1, 5 mbit s - systems

    信息技術. 1 . 5mbit s以內數字存儲介質用移動圖形和相關音頻編碼.系統
  13. Information technology - coding of moving pictures and associated audio for digital storage media at up to about 1. 5 mbit s - part 1 : systems

    信息技術. 1 . 5mbit s及以下的數字存儲介質用移動圖像和相關音頻編碼.第1部分:系統
  14. Information technology - coding of moving pictures and associated audio for digital storage media at up to about 1, 5 mbit s - compliance testing

    信息技術. 1 . 5mbit s以內數字存儲介質用移動圖像和相關音頻的編碼.第4部分:性能審核試驗
  15. Now, with the rapid development of computer and electronics, there have been a great progress in the field of input / output device technology. among this field, pci has been a current standard interface of pc. and in order to accommodate the development of operating system, wdm has been a driver model adopted by industry generally. at the same time, in the respect of sensor ’ s application, a high precision and high integrated incremental rotary encoder has been an outstanding one among the displacement sensors. meanwhile, eda technology and cpld / fpga chip applied in the signal processing circuit are approved by a great number of engineers who are engaged in designing the electronic device

    目前，隨著計算機技術和電子技術的飛速發展， i / o設備介面控制技術領域有了長足進步。其中， pci介面成為主流的微機標準介面，而與操作系統平臺的發展相適應， wdm已成為業界普遍採用的驅動程序模式;同時，在傳感器應用方面，高精度、高集成的增量式旋轉編碼器已是位移型傳感器中的佼佼者，而eda技術和cpld / fpga器件在信號處理電路中的應用被廣大電子設計人員所認可。
  16. Although there have been many application instances in the field of input / output device technology, we need an specific project and technology route aimed at an given application. in this thesis, we combine the introduction and analysis of relative technology to describe the accomplishment of a coordinate collecting device which is based on incremental rotary encoder. this device is an specific device applied to collect the corrdinate displacement of ground image ’ s three - dimensional model created by full digital photogrammetric station. cpld chip and vhdl are applied in this device to carry out the following work : phase control of the electrical pulse created by incremental rotary encoder, counting the number of electrical pulse, controling the state of signal processing circuit, exchanging data between this circuit and pci control

    本文結合相關技術的介紹和分析，描述了一個基於增量式旋轉編碼器的坐標參量採集介面卡的實現，此介面卡是一種用於採集全數字攝影測量系統地面影像模型坐標位移量的專用設備，該設備採用cpld器件和vhdl語言實現增量式旋轉編碼器的脈沖信號鑒相和計數、信號處理部分的狀態控制以及和pci總線晶元ch365之間的數據交換和通信功能，同時該設備的驅動程序基於wdm模式，並且配置有結構良好的動態鏈接庫程序作為系統軟體和驅動程序之間的數據和控制交互中間介面，能夠方便地運行在windows98 / 2000 / xp操作系統平臺上，具有實時性強、工作穩定、通用性較好和性價比高等特點。
  17. During the process of measuring valve phase, the grating displacement sensor and photoelectric axis - angle encoder are applied to measure the displacement of valve and the angle of curving shaft respectively. their signals are sampled and imported into computer. then the three signals are compared to find the relationship of valve phases in order to offer the reliable measuring parameters for the researchers and quality controllers

    在氣門相位測量中，採用光柵位移傳感器和光電軸角編碼器，分別將發動機進、排氣門位移量和曲軸旋轉位移量的變化信號通過采樣，輸入計算機，對三路信號加以比較找出氣門的相位關系，從而為設計開發人員、品質控制人員提供可靠的測量參數。
  18. The migration results of the synthetic and ocean field datasets show that this method is correct and effective. several prestack depth migration methods are proposed and unified to the synthetic source record migration method. these methods include plane wave migration with fourier finite difference ( ffd ) extrapolator, maximum energy plane wave migration and prestack migration with phase encoding of areal shot records

    通過對本文提出的平面波傅立葉有限差分疊前深度偏移方法、最大能量面炮記錄疊前深度偏移方法和相位編碼面炮記錄疊前深度偏移方法的研究，試算和對比，提出了合成震源三原則，根據這些原則，提出了合成震源概念和合成震源記錄疊前深度偏移方法。
  19. The synthetic source is the generalization of plane wave source, controlled illumination source, piecewise plane wave source and areal sources with phase encoding etc. by migrating the synthetic source record, the computational cost of the conventional areal shot record migration can be reduced by several times without significantly degrading the image quality

    合成震源既包括了已有的平面波震源，也包括了控制照明震源，分段平面波震源和相位編碼震源。合成震源記錄疊前深度偏移方法是炮記錄偏移、平面波偏移、控制照明偏移和相位編碼面炮記錄偏移方法的推廣和統一形式。
  20. A new method for prestack depth migration of areal shot records with phase encoding

    一種新的相位編碼面炮記錄疊前深度偏移方法
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