速度波門 的英文怎麼說
中文拼音 [sùdùbōmén]
速度波門
英文
speedgate- 速 : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
- 度 : 度動詞[書面語] (推測; 估計) surmise; estimate
- 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...
- 門 : Ⅰ名詞1 (房屋、車船等的出入口 ) entrance; exit; door; gate 2 (形狀或作用像門的東西) switch; va...
- 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. (快慢的程度) speed; rate; pace; tempo
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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。The frontal structure of longmenshan in the west of sichuan is very complex, showing intense structure deformation in overthrust belt, high structure amplitude, steep stratigraphic dip, developed fault blocks, complex seismic wave field, frequent change of lateral velocity, and poor image of post - stack time migration processing
摘要川西龍門山前緣構造非常復雜,逆掩推覆構造帶構造形變強烈,構造幅度大,地層傾角陡,斷塊發育,地震波場復雜,速度橫向變化大,常規疊后時間偏移處理成像效果較差。The main work is done with the help of model experiment. in the flood - relief experiment, the flood carrying capacity of spillway tunnel is checked. in the hydraulic experiment of the diversion power conduit system, the followings are studied : the flow condition and fluctuation in the surge chamber, the distribution of flow velocity before the rack in the surge shaft, the amplitude of stage in the quick gate bay etc. the test step, content and results of different proposals are introduced in details
本項優化試驗研究的目的主要在於,通過泄洪系統整體水力學試驗,校核泄洪洞的泄流能力;通過發電引水系統整體水力學試驗,研究調壓井內水流流態和水位波動情況、調壓井內攔污柵前流速分佈情況;確定快速閘門井內水位波動幅度;試驗確定壓力管道水擊壓力穿井系數以及泄洪洞弧形門處的水壓力。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。The thesis firstly analyzes the signal form of frequency modulated interrupted continuous waveform ( fmicw ) in theory, studies the principles of detecting range and velocity for fmcw, and further discusses the essential processing methods of the fmicw signal form, including the range transform processing method based on the strict corresponding relation between time and frequency domain, the velocity doppler transform, the digital beam forming
本文首先從理論上分析了在高頻地波超視距雷達所用的線性調頻斷續波信號的形式,研究了fmcw雷達測距測速原理,並深入地探討了fmicw信號的基本處理方法以及具體的演算法,主要包括距離變換中採用的時間波門相關處理方法,速度多普勒變換,數字波束形成。The suitable liqulfied nitrogen temperature range for special cryo - cotalal electric detectors, for measureing the tusmittal time of a shock wave, are developed, in order to create an optdrial precondition to test cryo - liquid twxtur more accuraely
專門研製的適用於液氮溫區的低溫同軸電探針(沖擊波速度傳感器) ,為精確測定低溫混合液樣創造了先決條件。The speed sensorless techniques for dtc system are very fascinating and challenging subjects recently, they are received wide attention in the literature. some brief description is provided. the proposed approaches are based on speed model of dtc, motor reference adaptive control, the instantaneous reactive power of motor and the extended kalman filter
無速度傳感器調速系統是直接轉矩控制研究領域內一個非常熱門的研究方向,本文介紹了無速度傳感技術的發展歷史及目前的研究狀況,分別利用直接轉矩控制的轉速模型方法,模型參考自適應方法、電機定子反電動勢以及擴展的卡爾曼濾波器等方法設計了無速度傳感器系統,對于其數學模型和系統構成作了比較詳細的推導。Being high power resources of millimeter - wave radiation, based on electron cyclotron maser, gyrotron has been pay much respect in the world for vast applications in many areas such as plasma heating, linear accelerators, millimeter wave radar, communications, electronic countermeasure and so forth. specifically in twenty years later, there was much developments on gyrotron
迴旋脈塞器件? ?迴旋管作為大功率毫米波源,在等離子體加熱、線性加速器、雷達、通信及電子對抗等領域有著廣泛的應用前景,由此受到了國際上的高度重視,特別是近二十年來,迴旋管得到了快速的發展,並成為研究的熱門方向。By using high - speed data acquisitioning unit designed specially to capture travelling waves of transient current, using global positioning system ( gps ) to supply high precise time tagging for both ends, using wavelet transform theories to identify the head of the travelling waves, the fault locator can realize high precise double - ended travelling waves location
該測距裝置採用專門設計的高速采樣單元捕獲暫態電流行波信號,用全球定位系統( gps )為線路兩端提供精度高達1 s的統一時標,用小波變換理論識別暫態電流行波波頭信息,從而可以實現高精度的雙端行波法測距( 150m ) 。Abstract : the simulated calculation and analysis of the fluctuation of the instantaneous speed of a diesel engine are presented. the important factors, influencing the measurement precision of the instantaneous speed, are discussed. the correct measurement method is presented. the instantaneous speeds of diesel engine are measured and processed in a laboratory condition. compared the simulated instantaneous speed with the measured instantaneous speed, the simulated result is correspondence with the measured result. the characteristic parameters and the criteria of the instantaneous speed for detecting the leakage of valves in diesel engine are provided, and diagnosis accuracy is confirmed on 4120sg diesel engine
文摘:對瞬時轉速波動進行了模擬分析計算;實測了發動機的瞬時轉速;對比了實測與模擬計算的瞬時轉速波形,兩者相當一致;討論了影響瞬時轉速測量精度的關鍵因素;提出利用瞬時轉速進行故障診斷的特徵參數及判據,並在診斷4120sg型柴油機氣門漏氣故障中得到證實The simulated calculation and analysis of the fluctuation of the instantaneous speed of a diesel engine are presented. the important factors, influencing the measurement precision of the instantaneous speed, are discussed. the correct measurement method is presented. the instantaneous speeds of diesel engine are measured and processed in a laboratory condition. compared the simulated instantaneous speed with the measured instantaneous speed, the simulated result is correspondence with the measured result. the characteristic parameters and the criteria of the instantaneous speed for detecting the leakage of valves in diesel engine are provided, and diagnosis accuracy is confirmed on 4120sg diesel engine
對瞬時轉速波動進行了模擬分析計算;實測了發動機的瞬時轉速;對比了實測與模擬計算的瞬時轉速波形,兩者相當一致;討論了影響瞬時轉速測量精度的關鍵因素;提出利用瞬時轉速進行故障診斷的特徵參數及判據,並在診斷4120sg型柴油機氣門漏氣故障中得到證實All of above make the miss distance of the missile difficult to estimate in shooting range. in order to solve these problems, a novel method for detecting and tracking small moving point target in image sequence is proposed in this paper, based on combination of the correlation of multi - frames and wave gate techniques. especially, the qualifications to confirm the target and the establishment of the wave gate based on size and characteristic moving parameters of the target are stressed in the paper
針對目前靶場所面臨的測量目標小、距離遠、目標與背景對比度小,不具有形狀信息的實際問題,提出了一種基於多幀相關技術與波門選通技術相結合的快速目標識別與跟蹤方法,特別探討了多幀相關技術中目標確定的理論判據,並綜合考慮目標的尺寸因素和目標的運動特徵研究了一種新的波門設定方案。According to the experiences with capital account liberalization in different countries, capital account liberalization and capital inflows surging in developing countries can promote the financial development ; meanwhile the economy in developing countries faces more and more indefinitude. the asian financial crisis in 1997, the financial turbulence in brazil and russia in 1998, the financial crisis in argentine in 2001, and the financial crises occurred in emerging market countries more frequently, seem to prove that, the stability of financial system in quite a few countries faces severe challenge, accompanying with the process of capital account liberalization. then, how could developing countries carry out the progress of capital account liberalization to ensuring the financial system stability
對于具有相對健全的金融體系的國家來說,資本賬戶開放有助於一國金融體系效率的提高和金融體系規模的快速擴張,能夠減輕乃至消除資本管制的巨大成本,推動國內金融市場的進一步深化;但隨著資本賬戶的開放,國際資本流動帶來了巨大的負外部性,使一國宏觀經濟和金融體系中不確定性增加,將對一國銀行體系資產負債規模和結構產生負面影響,使本國金融市場更易受到波動,並且增加金融部門系統性風險,加大了金融監管的難度,這會對脆弱的金融體系形成沖擊。Correlation gate size is determined by measurement noise, the maneuver of target, the cycle of radar scanning, extrapolate algorithm etc. in the thesis, we discuss how to design a correlation gate
相關波門的形狀大小取決于系統的隨機誤差,目標的運動速度,目標的機動規律,雷達的掃描周期,外推演算法等因素。The thesis uses sql server 6. 0 database, standard sql access interface, and oriented - object program language vc + + to implement our electric network dispatching message management system. the system can operate like this : automaticly check if having data files come ; discriminate file type ; automaticly read data into database ; rapidly give out the precise analysis results, including waveform display, fault component calculating ; select fault phase ; distinguish fault type ; precisely fault allocate ; run all kinds of database administration, like antomatic add - on, automatic deletion, amendment, inquiry by different conditions ; print all kinds of outcome and keep them into database ; share data resource by web technique ; deal with complex faults. the whole system i finished will be powerful technic support for dispatching operation
本文採用標準的sqlserver6 . 0數據庫,標準sql訪問介面和面向對象編程工具vc + +進行編程,實現了集數據庫、分析計算、圖形化界面、網路通訊於一體的電網故障錄波信息管理及故障診斷系統,該系統能夠在每次故障后自動查詢有無數據文件的到來;能夠對傳送到調度端的數據文件分析其類型;能夠按comtrade格式自動地將大量數據信息完整地填入數據庫中;能夠進行故障選相,故障類型判別和故障精確定位;能夠快速地對故障做出精確的分析,計算各次諧波分量,有無功和視在功率,功角,序分量等;能夠對數據庫進行各項管理,如瀏覽,自動添加和刪除,修改和按各種不同條件進行查詢;能夠將計算結果,各種表格圖形列印出來和保存進數據庫中;能夠將計算分析結果通過web技術為其他部門提供共享數據資源Still, with eight 15 inch main guns in four turrets, substantial welded - armour protection and designed for a top speed of not less than 29 knots ( she actually achieved a very impressive 30. 1 knots in trials in the calmer waters of the baltic ), bismarck was capable of engaging any enemy warship on at least equal terms
除此之外,她擁有的8門15英寸主炮的四座炮塔,結實的焊接裝甲和最高為29節的設計速度(她在平靜的波羅的海試航時開出了驚人的30 . 1節) ,使「俾斯麥」號能與任何敵艦至少戰成平手。分享友人