選擇波長法 的英文怎麼說

中文拼音 [xuǎnzháibōzhǎngfǎ]
選擇波長法 英文
selected ordinate method
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 擇 : 擇動詞（挑選） select; pick; choose
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  • 選擇 : select; choose; opt; election; choice; culling; alternative
  • 波長 : [物理學] wavelength波長標準 [光學] wavelength standards; 波長測量 wavelength measurement; 波長常...
  1. By making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution 、 high frequency accuracy 、 very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step. while the electronically tuned filter abates the image interference and notably improves the selectivity. the theorem of frequency synthesizer and center - frequency - fixed filter is simply but adequately introduced first in this paper

    課題中所採用的pll或dds pll鎖相頻率合成方法充分發揮鎖相環良好的窄帶跟蹤濾波特性，並結合dds的高頻率解析度、高頻率精確度和高速頻率捷變等優點，分別實現了系統所要求的高質量寬帶本振源和小步長頻率捷變；採用電調諧選頻技術，則大大改善了接收機的選擇性和抗干擾能力。
  2. To analyze some key technologies of optical network relative with rwa in detail, such as transmission, switching and internetworking ; to emphasize on the research of function, fabric and performance of optical cross - connection ; to carry out numerical simulations for crosstalk introduced by optical cross connect and to present measurements for suppressing it such as doubly filtering, fixing optimum decision threshold and appropriately choosing the number of multiplexed wavelengths ; 3. to research the fundamental principle and some problems relative with rwa, including the type of optical network, the type of traffic, the type of service, the survivability of optical network ; to classify and compare rwa algorithms and particularly research some dynamic rwa algorithms ; 4. to present reserved light - path and classify network resource such as used, unused and reserved status, to emulate establishment of all - optical connection in optical network through modified rwa algorithm and show effectively reducing setup time of all - optical connection utilizing reserved light - path ; to research rwa algorithms of multi - fiber network, to present new link weight functions dependent on node degree, unused fiber ( s ) per wavelength - layer and routing policies, to perform emulation of rwa based wavelength layer graph applying new link weight functions and show them make algorithms better performance and network lower blocking rate ; 5

    詳細分析了與rwa相關的光網路關鍵技術，包括傳輸、交換、組網等，重點研究了光交叉連接的功能和結構、性能，對其引入的串擾進行了詳細分析，選擇恰當的器件參數進行了數值模擬，並提出了抑制措施（如雙重濾波、優化判決門限、選擇恰當的復用波長數） ; 3 .研究了光網路的r認叭的基本原理、與r認叭的幾個相關問題（光網路類型、業務類型、流量類型、光網路生存性） 、 r認人演算法的分類和比較，具體研究了幾種動態r場人演算法; 4 .研究了以全光連接建立時間為優化目標的r認認演算法，提出預置光路的概念，對網路資源進行狀態分類（佔用、未佔用、預置） ，利用改進的r認叭演算法模擬，預置光路可為部分新到的連接請求快速建立連接，從而提高網路性能;研究了以多光纖網路連接阻塞率為優化目標的r認城演算法，提出了以節點度數、每個波長分層的空閑光纖數以及路由策略決定的幾種鏈路權重函數，利用基於波長分層圖模型的并行r場人演算法模擬，利用新的鏈路權重函數使得演算法具有更優的性能，使網路具有更低的連接阻塞率。
  3. Also from waveform polynomials of sequential circuits, a precise clocking method based on multiple - period sensitization is presented. a novel noise estimation method based on boolean process is first presented in this paper, using transition numbers to describe noise effects. then combined with the selection method of long sensitization paths based on waveform sensitization, a test generation approach that could generate the noisiest sensitization waveforms for long sensitizatizable paths is presented

    為了適應超深亞微米電路測試的要求，本文建立了一種新的基於布爾過哈爾濱工程大學博士學位論文程論的邏輯級噪聲預測模型，用波形多項式描述的同時發生的跳變數來預測l卜足聲大小，並生成能產生最大跳變數目的輸入波形;然後同基於波形敏化的長敏化通路選擇法相結合，形成一種能產生最大噪聲效應的敏化測試波形生成新方法。
  4. In this thesis, first, we present the theory of sess system, the generation of the sess spreading code and its characteristics and the acquisition theory of conventional spread spectrum communication system. an efficient acquisition scheme based on periodically transmitting the synchronization head, which is composed of binary chaotic codes, using the matched filter and automatic decision threshold - level control based on a so - called constant false alarm criterion for sess system is present. the acquisition model of sess system is built and simulated in the awgn channel, the raleigh fading channel and imulti - address interfere condition

    本文首先概述了自編碼擴頻通信的原理、自編碼擴頻序列的產生方法及其特性和擴頻通信系統編碼同步的理論，然後針對自編碼擴頻通信系統提出了擴頻序列捕獲方案:周期性地加入混沌序列同步碼，並採用恆虛警率匹配濾波器捕獲法;在加性白高斯噪聲通道、瑞利衰落通道和多址干擾情況下進行了模擬，分析了各種捕獲性能:在選擇性能最優的混沌序列、適當的序列長度、虛警概率及門限值的情況下，可以獲得較短的捕獲時間和較大的捕獲概率。
  5. Progress and application of spectral data pretreatment and wavelength selection methods in nir analytical technique

    近紅外分析中光譜預處理及波長選擇方法進展與應用
  6. We adopt k shortest paths into routing and choose the best route in them considering link costs, links hops and the number of no - utilized wavelength in a link

    路由選擇採用k條最短路徑演算法進行，備選路由集中首選最佳路由時考慮鏈路的代價，跳數和每一條鏈路上不可用波長數。
  7. So, in the process of laser powder rapid micro - fabrication, to gain the fine light solidification unit, mainly should adopt two following aspects : 1. using the laser that has the mini - focus spot. usually select the doubling frequency laser or fiber laser

    要想獲得細小的光固化單元，對于激光粉末快速微成形工藝而言，主要從下面兩個方面入手: 1 .使用光斑直徑細小的激光器2 .選擇粉末顆粒直徑小的金屬粉末作為激光粉末快速微成型固化材料為了解決精細聚焦問題，我們採用nd : yag倍頻的方法獲得短波長激光器。
  8. Abstract : the expressway landscape and its design and studies, the shift from economic compensation of forestland to landscape compensation during the construction of high - grade highway, the measures to conduct ecological environmental protection and the relationship between highway design and living environmental protection are discussed and studied

    文摘:紫外光度法測定水中油類時在標準油品、波長的選擇以及氯化鈉用量和石油醚純度等方面存在的問題進行了探討，提出以工作曲線代替標準曲線，使回收率達到97 %左右。
  9. Fairfax county school system spokeswoman, kitty porterfield, said that schools there provide " several written communications " to parents outlining opt - out procedures

    菲爾法克斯郡學校發言人凱蒂?波特菲爾表示，當地學校提供好幾份通知單給家長，上面詳細列出選擇拒絕資料外?的辦法和程序。
  10. A fairfax county school system spokeswoman, kitty porterfield, said that schools there provide " several written communications " to parents outlining opt - out procedures

    菲爾法克斯郡學校發言人凱蒂?波特菲爾表示，當地學校提供好幾份通知單給家長，上面詳細列出選擇拒絕資料外?的辦法和程序。
  11. People often think about the filter ' s characters of orthogonal, symmetry, regularity, but seldom synthetically think about some factors such as image texture or compression rate. in this paper used the same adaptive arithmetic coder for many filters, analyzed the effect factors synthetically for the best wavelet compression, and give some methods for selecting filter

    本文對多種常見濾波器，採用相同的自適應量化編碼方法進行實驗，研究並分析了選擇濾波器時應該考慮的圖像紋理、濾波器長度、壓縮比等一些綜合因素，有效解決了在小波圖像壓縮過程中，如何更好的選擇濾波器的問題。
  12. With the inherent relation between spotlight mode sar and stripmap mode sar, a method that stripmap sar imaging is performed by multiple - subpatch processing algorithm based on spotlight mode sar is also proposed in chapter 2. in the method, we study how to choose scene size to avoid significant motion through resolution cells and develop the formula of filter bandwidth determined by scene size

    論文第二章還詳細分析了條帶模式與聚束照射模式之間的區別及聯系，提出了一種基於聚束照射sar成像演算法實現條帶數據處理的方法，對成像區大小的選擇作了分析，推導出成像區長度與濾波器帶寬應當滿足的關系式，並用實測數據進行了驗證。
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