脈沖回波法 的英文怎麼說

中文拼音 [màichōnghuíbōfǎ]
脈沖回波法 英文
pulse echo method
  • 脈 : 脈名詞1. （動脈和靜脈的統稱） arteries and veins2. （脈搏的簡稱） pulse 3. （像血管的組織; 連貫成系統的東西） vein
  • 回 : 回構詞成分。
  • 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...
  • 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...
  • 波法 : borda count
  1. Based on the analysis of the beat frequency signal, the expression of the beat frequency phase is deduced. the expression indicates physics meanings of quantities to be detected and supplies theoretical bases for detection methods. by using two - dimensional fft, the range and velocity information of target is got out from the echo. according to the periodicity range ambiguity of symmetrical pulses in fmpcw, the processing method of sliding time window is used

    通過對差頻信號進行的分析，得出了差頻相位的具體表達式，表現出了要檢測的各量的物理意義，對檢測的方法提供了理論依據。利用二維fft方法，可以有效地提取回波中目標的距離與速度信息。對于fmpcw信號由於均勻脈沖產生的周期性距離模糊的問題，採取時間波門的處理方法。
  2. The master dissertation introduces passive correlative orientation system and base theory in signal dispose briefly in the first place. the system takes tv sound fm signal from tv satation signal. the power rate of tv station signal to sound signal is ten to one. in the case of submerged by mussy weave and machine ' s hot noise, dispersed target signal is feeble

    系統採用電臺的電視伴音調頻信號，其中電臺信號與伴音信號功率之比基本為10 ： 1 ，並且目標散射信號較弱，一般情況下淹沒在雜波和機器熱噪聲之下，採用常規的脈沖檢測方法很難對遠距離的目標進行檢測，而以電臺直達信號作為參考與目標回波信號進行相關檢測；系統中信號的相關處理會產生旁瓣，而強目標的旁瓣會影響附近的弱目標檢測。
  3. 7. in chapter 8, a new method for estimating the doppler and multipath time delay of the overlapping echoes for lfm pulse radar by only one period pulse signal is presented

    7 .在第八章提出了一種對lfm脈沖雷達回波d叩pler頻移和多徑時延進行聯合估計的方法。
  4. Based on mono - pulse radar system and the analysis of terrain echoes, a geometrical model of air to ground ranging is constituted. by using the signals received from the sum and difference channels of terrain follow radar, a group of the expressions for terrain echoes are educed and characteristics of these echoes are obtained. according to the characteristics of the echoes, the theory and method of pass zero detection of difference channel and its applications are discussed in detail

    針對一維單脈沖雷達體制，分析了地形目標回波特性；建立了地形跟隨雷達空地測距的幾何關系；利用雷達收發信號，導出了地形跟隨雷達和差接收通道的回波信號表達式，進行了波形模擬，得到了地形跟隨雷達的地面散射產生回波在時域中的特性；根據和差回波特性，闡述了差信號過零點檢測測距的原理和方法及工程實踐中的應用，並給出了真實雷達對外輻射試驗的結果，驗證了文中的模擬。
  5. The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

    本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。
  6. Measuring thickness by ultrasonic pulse - echo contact method

    接觸式超聲波脈沖回波法測厚
  7. Standard practice for ultrasonic pulse - echo straight - beam examination by the contact method

    用接觸法做超聲脈沖回波縱波檢驗
  8. Standard practice for measuring thickness by manual ultrasonic pulse - echo contact method

    用人工超聲脈沖回波接觸法測量厚度的標準實施規程
  9. Method for assessing the overall performance characteristics of ultrasonic pulse echo testing instrument

    評定超聲脈沖回波檢驗儀綜合性能特徵的試驗方法
  10. Method for assessing the electrical characteristics of ultrasonic testing instrument using pulse echo technique

    採用脈沖回波技術評定超聲檢驗儀電氣特性的試驗方法
  11. Method for measurement of ultrasonic attenuation coefficient of solid by pulse echo technique

    用脈沖回波技術測量固體超聲波衰減系數的檢測方法
  12. Methods of measuring the performance of ultrasonic pulse - echo diagnostic equipment

    超聲波脈沖回波診斷設備性能的測定方法
  13. It commences from review of the theory of sar high resolution in the text, the fundaments and computation procedures of two algorithms for sar raw signal generation ? ? rtpc, 2dfft are introduced

    文中從回顧sar高分辨原理入手，介紹了距離時域脈沖相干法和二維頻域快速傅氏變換法這兩種回波信號生成演算法的基本原理和計算步驟。
  14. This paper introduces two methods of ultrasonic characterization of thin layers : longitudinal pulse - echo and lamb waves

    摘要介紹了兩種常用的材料薄層超聲表徵方法縱波脈沖回波法和蘭姆波法。
  15. Methods for measurement of thickness by ultrasonic pulse echo technique

    用超音波脈沖回波技術測定厚度的方法
  16. Testing method for ultrasonic pulse echo technique of carbon fibre reinforced plastic panels

    碳纖維增強塑料板的超聲脈沖回波技術的試驗方法
  17. The application of longitudinal pulse - echo is relatively simple, which can provide information of the thin layers such as the depth, ultrasonic velocity, attenuation etc

    縱波脈沖回波法簡單易行，能夠獲得薄層厚度、聲速和衰減等信息。
  18. Through the spread time of ultrasonic signal is processed by digital correlation method, measuring the velocity of ultrasonic speedily and accurately is achieved

    利用超聲脈沖回波法在溫度箱內測定了某合金材料在20 ~ 60的彈性常數，研究了溫度對該材料彈性模量的影響。
  19. The effect of the radial velocity on synthetic spectrum and synthetic range profile is discussed, and the velocity compensation method is described. the ambiguity of stepped - chirp is presented and < wp = 6 > used to design the waveform. furthermore, the stepped - chirp sar system design and sar imaging are discussed

    創新點在於：提出了脈內調頻脈沖串波形合成寬帶回波、獲得一維高解析度距離像的方法，給出了脈內調頻脈沖串合成孔徑雷達成像的具體步驟。
  20. Element pulse - echo ultrasonic transducer. general specifications and measuring method

    單元脈沖.回波超聲換能器.一般技術要求和測量方法
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