波模再變換 的英文怎麼說

中文拼音 [bōmózàibiànhuàn]
波模再變換 英文
mode reconversion
  • 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...
  • 模 : 模名詞1. （模子） mould; pattern; matrix 2. （姓氏） a surname
  • 再 : 副詞1 （又一次） another time; again; once more 2 （表示更加） still; further 3 （表示如果繼續怎...
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  1. The result of this paper were : 1 ) the market mircrostructure of chinese stock is ' nt market maker, two - part stock can n ' t circulate and the scale of current stock is small, so, filling right effect make dividend event do n ' t diluate the price, the stock price could n ' t reach optimal price ; 2 ) the meanings of bid - ask speed in chinese has been changed, did n ' t reflect the real trade cost, only reflect the possible trade cost, contained desire of price popple, din n ' t belong absolute liquidity again ; 3 ) turnover rate is a liquidity ' s index, speculation ' s index too, which can explain one side of liquidity, but this index is defective in chinese stock market ; 4 ) martin index was decrescent when dividend event occurred, display the liquidity of stock was improved, so, the martin index is compatible index to measure chinese stock liquidity ; 5 ) stock dividend event affect the liquidity in the stock dividend day, stock dividend event can n ' t dividend event in the bulletin day ; 6 ) the quantity stock dividend and trend of stock market was significant factors that affect the liquidity

    本研究的結論是： 1 ）中國股票市場的微觀交易結構並不是採取做市商制度，且2 3的股票不能流通，流通股規模很小，存在著股票股利事件后的快速「填權」效應，使股票價格快速回升，股票股利發放事件的稀釋價格作用無法發揮，也就無法達到「最適價格」 ； 2 ）中國股市的買賣價差的含義發生了變化，不再是實際交易成本的反映，只是可能交易成本的反映，因而很大程度上代表了股價的波動意願，並不具有完全意義上的流動性含義。 3 ）就換手率而言，它既是流動性的衡量指標，也是最常用的衡量投機性的指標。換手率指標只能說明流動性的一個側面，在中國衡量流動性是有缺陷的。
  2. Wavelet packet transform is used to improve the snr of the incoherent integral radar echo, and bispectrum algorithm is used for signal detection in this united detecting algorithm, based on the modeling for the through - wall radar echo

    在對穿墻雷達回波信號建模的基礎上，用聯合演算法將非相干累積后的回波信號經過小波包變換提高信噪比，再用雙譜演算法進行信號檢測。
  3. In chapter iv, a new method of eyes location is provided. it detects the edg of human face image with wavelet transform in the first. then it begins to statistic the gray value of the row and list

    本文第四章提出了一種基於簡單背景的人眼定位演算法，用小波變換對人臉圖像進行邊緣檢測，對得到的結果進行行列統計，得到人臉的大致位置，再用模板匹配進行最後的精確定位。
  4. Because wavelet transformation has strong capability of withstanding noise, we have easily considered making wavelet transformation for the input signals, and recognizing them in hidden markov models

    由於小波變換具有很強的去噪功能，一個自然的想法是在hmm識別系統前串連一個小波濾波器，將待識別模式信號作小波變換后再輸入hmm模式識別系統以進行識別。
  5. First we collect signals by shake and infrared temperature sensor, transfer them to computer by a / d instrument, dispel zero excursion of sensor and in - linearity of a / d transformation, save them in the form of data file. then transfer them to matlab, analyze and dispose by wavelet function and toolbox. by lot of experiments and data analysis we find distinct change of the character in different fault states

    然後，我們在現場對砂光機進行實驗，利用振動及紅外線溫度傳感器現場實時採集信號，通過a / d采樣卡送入計算機中，採用逆向建模的新方法來消除傳感器零漂及a / d轉換的非線性，再以數據文件形式保存，然後在matlab中調用數據文件，應用小波函數及工具箱對其進行處理分析，經過大量的實驗及數據分析發現在不同的故障狀態下，特徵量有明顯變化。
  6. The hard work and creative ideas in this paper as follows : understanding on faults of pc ' s pd, analysis of pd inside and outside pc, design of monitoring device, recognize of how to improve accurate of tgs " s measurement, wavelet - transform introduced for signal ' s processing and how to write programs and do simulations of wavelet - transform in matlab5. 3 here etc

    論文主要工作和有新意的內容在於對電力電容器故障的理解，對它內外放電的機理分析，對監測裝置的設計，對如何提高tg占值測量計算精度的再認識，小波變換的引入以及具有針對性的在matlabs . 3下的模擬分析，包括對模擬工具的熟悉與使用。
  7. Since that the choosing line hardware for the neutral ungrounded system has just passed part of the dynamic simulative test, matlab software was chosen to do a lot of simulative tests on single phase - to - grounding fault. and the simulative sampling ratio is almost the same as the hardware ' s. because there is a low wave filter in the hardware, i choose the db15 wave - let to carry out the multidimensional decomposition on the sample by the method of one dimension discrete wavelet in order to obtain low frequency signal including the high frequency transient information on single phase - to - grounding fault

    鑒于實驗室已有的小電流接地系統選線硬體的研製只通過了實驗室里的動模試驗，故選用matlab軟體對小電流接地系統進行大量的單相接地故障模擬試驗，模擬的采樣率和硬體基本一致，由於硬體中帶有低通濾波器，故在進行采樣數據的morlet小波分析時先採用db15小波對采樣進行一維離散小波的多尺度分解，使得分解得到的低頻信號剛好包括了小電流接地系統單相接地故障時的暫態高頻信息，然後對這一信息再繼續進行小波演算法分析，分析結論表明利用變換后的實部、虛部和模值能夠較準確的實現單相接地故障時的故障選線和暫態高頻分量的提取。
  8. Then, the fault circuit selecting method utilizing wavelets transform is proposed to obtain useful fault transient components. the results of simulation denote that the methods in this paper are efficient and reliable. lastly, the influences of arcing grounded are discussed

    然後再利用小波變換的時頻局部性提取故障信號中的暫態分量進行選線分析，經理論分析和算例模擬，可以發現本文提出的方法是有效、可靠的。
  9. As the spread spectrum and despread of digitalization are handled on the digital baseband, it is very important to convert medium frequency signal in analogue to digital baseband signal, and the downconverter functions to convert analogue medium frequency to analogue baseband signal, and to digital baseband signal through a / d transformation and decimation filter

    所以把模擬的中頻信號變為數字基帶信號的下變頻器就顯得非常重要。在這里下變頻器的作用是將由前一級接收而來的模擬中頻信號變為模擬的基帶信號，再經過a / d轉換和抽取濾波成為數字的基帶信號。
  10. ( 1 ) basic mathematical model for recording and numerical reconstruction of digital hologram is elaborated. the core of digital holography is the algorithm of numerical reconstruction. two different approaches for numerical reconstruction of digitally sampled holograms are investigated, namely the fresnel transform algorithm and the frequency domain algorithm, which are deduced from the diffraction theory of spherical wave and plane wave respectively

    （ 1 ）從理論上詳細闡述了數字全息圖記錄與再現的基本原理，建立了數字全息圖記錄和數值再現的數學模型，根據光波衍射的球面波和平面波理論，給出兩種不同的數值再現思路，即頻域再現法和菲涅耳變換法。
  11. Secondly, aiming at measurement being only from one satellite and the ekf being not stable, the measure equation is improved. transforming the form of angle measurements by the imaging theory, linearization of measure equation is realized by fake data of measurement. parameter of ballistic missile trajectory is estimated by using ekf, and the simulation shows that the unstabilization problem of ekf with true measurements is solved by using ekf with fake measurements

    在僅有一顆預警衛星能夠觀測到目標的情況下，針對擴展卡爾曼濾波不穩定的問題，對觀測方程進行改進，利用光學成像系統的原理，將測量量進行變換，並利用新生成的偽測量量使測量方程線性化，再利用擴展卡爾曼濾波演算法對目標的彈道參數進行估計，最後，通過數學模擬來證明利用偽測量量的擴展卡爾曼濾波解決了單顆衛星觀測時利用真實測量量的擴展卡爾曼濾波不穩定的問題。
  12. Upon converting the sound waves into a flood of digital data, the signal passes through an analog digital or short a d converter, which performs a time - based rasterization of the incoming signal and determines a certain level with which the wave could, for example, reach our ear with every passing second

    回到聲音切割部分，如之前提到的欲將聲波儲存時，其實也就是將模擬analog訊號轉換為數字digital信號再加以儲存，連續的模擬信號將被切割成如圖的階梯狀，回到我們的耳朵就會變成斷斷續續的聲音。
  13. Based on the multiplicative speckle model, a new filtering algorithm based on wavelet transform was developed. first, the multiplicative speckle noise was changed by logarithmic transform into additive noise, which simplified the subsequent speckle suppression. the speckle suppression was carried out in the process of wavelet transform of the logarithmic transformed image

    針對斑點噪聲的乘性模型特點，構造了一種基於小波分析的濾波器：對sar圖像進行對數變換，利用小波變換對對數圖像進行濾波處理，再通過指數變換得到去噪圖像。
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