數模變換 的英文怎麼說

中文拼音 [shǔmóbiànhuàn]
數模變換 英文
digital analog conversion
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 模 : 模名詞1. （模子） mould; pattern; matrix 2. （姓氏） a surname
  • 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. Through the detailed analysis of the aaf, the defection of using chirp - fourier transform in guidance radar signal processing is pointed out

    通過對加速度模糊函數的形態分析也指明了針對線性調頻信號的二次相位匹配處理（ chirp - fourier變換）在應用到制導雷達信號處理中所存在的缺陷。
  2. The fractional fourier transform is linear time - frequency transform, and it doesn ’ t have disadvantages of wigner - ville distribution. moreover, the precision of this method is higher, and the performance of antinoise is better

    而分數階傅立葉變換是線性時頻變換，所以它不受交叉項的干擾，沒有不模糊區間減半的缺點，而且它的估計精度高、抗噪性能好。
  3. With the help of the electronic computers, engineers employ it to figure out nearly all kinds of engineering problems ranging from astronavigation, construction, waterpower projects, ship - building and mechanical engineering etc. owing to the strong power of finite element method, one kind of software pack which based on the method is exploited and named algor feas to resolve problems on structure analysis for trusses and shells. this paper also employ algor feas software pack to analyze and compute the cableway towers, giving the accurate result on stress and displacement both in location and whole. finally, we also bring out some advice on structure improving

    在此分析過程中：首先將物理模型簡化為力學模型，主要是將塔架結構按空間桿單元簡化為空間桁架結構，目的是將力學模型變換為數學模型；這一過程主要是利用autocad2000建立塔架的計算模型；再者，利用algorfeas軟體包讀入autocad建立的塔架計算模型生成初始數據卡利用計算機進行編程進行風載計算，再將計算結論整合入algorfeas產生的初始數據卡中，生成計算數據卡；接著，利用algorfeas軟體包計算塔架在不同載荷情況下的應力圖，位移圖，並且求出在不同載荷條件下的最大位移和最大應力等；然後，對塔架的穩定性進行分析；最後；根據計算結果提出改進建議。
  4. Applying the information extracted from numerous hydrographic data of field trials collected by h / hcs - 017, the first set of multi - beam swath bathymeter developed in china, a series of mosaic techniques have been carefully studied in this thesis, including digital terrain model building, statistical error analyzing, hydrographic data mosaicking as well as tides correction and projection of the earth coordinates. finally, standard digital sea - charts and three dimensional seafloor images are successfully developed that are consistent with hydrographic surveying principles

    本文利用我國第一臺h hcs ? 017型條帶測深儀的測量數據進行拼圖技術的研究，主要研究的內容有：利用分帶原理對深度數據進行潮汐修正，得到瞬時海面的深度數據；對測深數據進行誤差分析處理，去除野值；將多波束數據進行坐標變換及投影轉換后構建數字地理模型，進而根據海道測量規范繪制標準海圖。
  5. In this thesis, used thermocouple to sense the temperature in the space of the hearth, attributed the thermocouple based on calorifics and scientific arithmetic, acquired data by data acquiring card, processed data according to the demand of setting up temperature model and drawing graphics and then caculated the coordinates of isothermal points and normals of isothermal facets, ascertained the order of connecting points and the model of construct, drawed the isothermal facet of temperature field with opengl at last

    通過數據採集板卡進行數據採集並與計算機介面進行數據處理。然後，將處理后特殊點的溫度數據依據marchingcubes演算法建立數學模型求取等溫面上的點的坐標及各點的法向量等。最後，確定計算的三維坐標點的連接順序和拓撲模型，利用opengl進行等溫面的繪制、消隱和模式變換等工作。
  6. The retinal image segmentation, the feature points of blood vessel extraction, the feature correspondency, the transformation model of retinal image and the registration parameter optimizing methods are all the main facts studied in the paper

    主要研究內容包括視網膜圖像血管網路的分割、血管特徵點的提取、特徵對應性、變換模型以及參數優化等方面。
  7. Based on differential calculus of parameters ' the method of the establishing traffic kinematics model is proposed

    提出了基於參數變換的運動學建模方法和步驟。
  8. For the anticounterfeiting of printings ( such as certificate ), the existent many ways ( such as rainbow holograms ) are not available as the need for special use : anti - distortion and anti - copy. basing in the double - random - phase transform, this article puts forward a new way that two - dimensional bar code is used as anticounterfeiting label with anti - printing ? scanning and anti - damage properties. the major job are : ( 1 ). basing in the ascii codes, numerals and alphabets are encoded and subsequently transformed into two - value bar code matrix figure. later, using amplitude - based double - random - phase transform, the enciphered gray scale figure is formed. by computer simulation ( 4f system ) and printing as well as scanning ( 20 times ), we get the result that the gray scale figure with little miscoding rate ( 0. 0026 ) by “ matrix expanding way ”

    本文主要開展了以下三項研究工作: （ 1 ） .用自定義編碼方案，將數字和字母（ ascii碼）轉換成二值條碼圖;對該圖形進行振幅型雙隨機相位加密變換，得到原信息的加密灰度圖;通過4f光學系統計算機模擬和列印-掃描實驗，證明本文提出的「矩陣擴展法」灰度圖具有較小的誤碼率，對於20次列印-掃描實驗，誤碼率不大於0 . 0026 。
  9. Then, we investigated the epistasis of gas using walsh - schema transform, and further evaluated the epistasis order for the < wp = 5 > continuous function optimization problems

    利用walsh模式變換對遺傳演算法基因關聯問題進行了分析，並對連續函數優化問題的基因關聯階數進行了估計。
  10. The simulation on synthetic data is made and the result is discussed. 5 ) by using borland c + + builder and matlab, a semi system, i _ miner, is developed to mine association rule. it can realize other functions just as data cleaning, data transform, etc. furthermore, i _ miner is applied to an actual industry database

    提出用趨勢變換序列dtw距離做篩選的搜索方法，有效提高整個搜索效率，並在模擬數據庫上進行模擬實驗，並對實驗結果進行分析和討論； 5 ）以borlandc + + builder和matlab為開發平臺，設計一個進行關聯規則挖掘的準系統i _ miner ，可以實現數據預處理，數據變換和關聯規則挖掘等工作。
  11. This product is a full electron construction in which its front - end adopts pressure sensor with baffle filled oil chip. output signal is sent the data to microprocessor from high - precision, low temperature drift and high - reliability amplification circuit and a d convert circuit, after operating, to transform by high - precision d a convert circuit into standard signal output

    該產品為全電子結構，前端採用帶隔離膜充油芯體的壓力傳感器，輸出信號由高精度低溫漂和高可靠性的放大電路和模數轉換電路將數據送入微處理器，經運算後由高精度數模轉換電路變換為標準信號輸出。
  12. Digital to analog d conversion

    數模變換
  13. Digital to analog conversion

    數模變換
  14. Abstract : the paper drives the computer imaging mathematics transform of submarine simulat ion, the formulas that drive finally could be used for simulation directly

    文摘:文章對潛艇模擬中的計算機成像數學變換公式進行推導，推導出的最終公式可直接用於模擬。
  15. Then on the basis of those, a model of software radio receiver is given. operations are determined using hardware whose configuration is under software control. finally, the circuits are realized with simulation in order to prove the discussed schemes

    然後建立了軟體無線電接收機的數學模型，盡可能的簡化射頻模擬前端，將模數數模變換器盡量靠近天線，在對信號充分數字化的基礎上依靠軟體來定義無線電的各項功能。
  16. Modular transformation formula for certain series

    一類級數的模變換公式
  17. Aiming at the effects of distributed capacitance on accurate fault location, a new method based on the distributed parameter model, where the two - terminal data of the transmission lines are utilized, is proposed

    摘要基於線路的分佈參數模型，並且利用線路兩端工頻電氣量和相模變換，提出了在模域中進行故障測距的演算法。
  18. 2. to implement the conversion of signal, a multi - channel time / data convert module with high precision and programmable time resolution is used. its characters and usages, including the theory and the software configuration program by using the chip sn74 | act8990, are introduced in the dissertation

    2 .為完成信號的轉換，儀器選用了一個多通道，高精度、具有可編程時間分辨能力的時間/數字變換模塊（ tdc ） ，論文介紹該模塊的特點，以及在課題中的使用方法，包括實現其軟體配置的晶元sn74act8990的原理和編程方法。
  19. The digital upward frequency conversion is the key element of the waveform synthesis. at the same time, basic theoretical analysis and optimum design are done for pci bus slave interface, fifo, transmit signal processor, digital - to - analog converter and logic control

    本文對波形合成技術的核心? ?數字上變頻進行了深入細致的研究和介紹，同時對波形合成器中的pci總線介面、先進先出緩沖器、發射信號處理、數模轉換及邏輯控制等部分進行了分析和優化設計，給出了最佳設計方案。
  20. The root cause of this is that before the constantly changing analog signals from thermocouples or resistance thermometers can be processed digitally, an analog - to - digital conversion process is necessary, often resulting in loss of overall accuracy and measurable time delays

    它的起因是可能經常從熱電偶或抵抗溫度計改變的模擬信號，而需要處理數字信號，一個數模轉換過程是必要的，經常造成全面準確性和測量時間延誤的損失。
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