窗脈沖 的英文怎麼說

中文拼音 [chuāngmàichōng]
窗脈沖 英文
window pulse
  • 窗 : 名詞（窗戶） window
  • 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
  1. The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided

    論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。
  2. Some valuable conclusions are summarized by theoretical analysis and simulation experiments : from the side of signal processing, pulse jamming can be deleted by the method of time - domain sliding window accumulation and can be restored by interpolative prediction. ; gauss white nose can be attenuated while jamming disperse point - target by the method of time - frequency analysis in time - frequency domain. ; radio frequency noise jamming can be deleted by the method of average range frequency spectrum and notching in frequency domain

    通過大量的理論分析和模擬實驗，得到了一批具有一定價值的結論：從信號處理的角度出發，對于脈沖式干擾，能夠運用時域滑動窗口積累的方法去掉，並且通過預測插值得到較好的恢復；對于高斯白噪聲干擾，在時頻變換域內應用時頻分析方法可減小其對分散點目標的干擾；對于射頻噪聲，通過平均距離頻頻法和頻域陷波的方法可以去掉；從改變合成孔徑雷達系統角度出發，類似雙基地雷達能夠避免各種干擾，對發射信號進行調幅，調相以及改變調頻斜率都是較好的抗干擾方法。
  3. 2. analyse lfm signal compression performance with high compression ratio ， program the correlative test software ， compare the pulse compression performance with various window - functions and get the satisfied results. 3

    分析了lfm信號在高壓縮比情況下的壓縮性能，並編制了相關測試軟體，對不同加窗情況下的脈沖壓縮性能進行了比較，取得了滿意的效果。
  4. Combined with electromagnetic and heat transfer, fem ( finite element method ) are used to analysis the temperature distribution in the output window result from pulse microwave and consecutive microwave of high power

    用有限差分法對迴旋管輸出窗在連續波功率、脈沖功率條件下的溫度分佈進行了計算和分析。四
  5. It is well known that for an optical pulse, its distribution in time domain is infinite. but only a limited time window width t _ ( w ) may be selected in numerical calculations because of the limitation of the microcomputer. therefore, the selection of t _ ( w ) is also a key aspect that should be considered carefully in numerical simulations

    基於此，本文提出了利用分步傅里葉方法計算光脈沖在光纖中傳輸時間窗口的選取方法，給出了正確模擬光脈沖通過不同長度的光纖后光脈沖的變化所要選取的時間窗口（即計算過程中所取的積分上下限之差） 。
  6. First, delay window is used to reduce influence of pulse disturbance and signal amplitude to measurement result. second, according to the feature that width of receiving signal is wider than disturbing signal, width differentiation circuit is utilized to distinguish receiving signal and disturbing signal. third, most of digital circuits are integrated into isplsi ( in system programmable large scale integrated chip ) 1032 so as to simplify design and to develop the stability and reliability of the system

    關于提高系統的穩定性和可靠性問題：一是採用了延遲窗口接收技術，以盡可能減小干擾脈沖對測量結果的影響；二是根據接收信號脈寬比干擾信號脈寬要寬的特點，採用脈寬鑒別電路來鑒別接收信號；三是用可編程大規模晶元isplsi1032對系統大部分的數字電路進行了集成化設計，達到既簡化電路設計、又提高系統穩定性可靠性的目的。
  7. Standard test method for water penetration of exterior windows, skylights, and doors by rapid pulsed air pressure difference

    使用快速脈沖氣壓差法進行外窗天窗和門的水滲透性標準試驗方法
  8. A numerical approach is often employed for understanding optical transmission process in fibers, for the reason that the equation modeling optical propagation in fibers is a nonlinear partial differential equation ( sometimes is called nonlinear schrodinger equation ), which cannot generally be given analytical solutions

    就單一的光脈沖而言，其時間范圍可以為無限，而在計算過程中我們只能就其中起主要作用的一段時間范圍進行模擬，這一時間范圍定義為時間窗口t _ w 。
  9. Then on one hand, author makes researches of anti - jamming against pulse jamming 、 gauss white noise jamming and radio frequency noise jamming from the side of signal processing. author exercises much signal processing knowledge of time - domain sliding window accumulation 、 wavelet analysis 、 time - frequency analysis and linear prediction and carries out many simulation experiments. on the other hand, author proposes the anti - jamming methods of using a sar similar to double - base radar and modulating the amplitude 、 the phase of emission signal and changing the frequency modulation slope from the side of changing sar system model

    作者首先提出了合成孔徑雷達抗干擾的定義、分類以及評價抗干擾方法好壞的主客觀標準；然後，一方面從信號處理的角度出發對脈沖式干擾、高斯白噪聲干擾以及射頻噪聲干擾進行了抗干擾研究，其中運用了時域滑動窗口積累，小波分析，時頻分析以及線性預測等信號處理知識，做了大量的模擬實驗；另一方面，本文基於改變合成孔徑雷達系統模式提出了利用類似雙基地雷達來抗干擾，以及對發射信號進行調幅、調相以及改變調頻斜率來抗干擾，同樣做了相應的模擬實驗。
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