有效聲納 的英文怎麼說
中文拼音 [yǒuxiàoshēngnà]
有效聲納
英文
active sonar-
The results of performance testing showed that the additive of nano - powders can evidently enhance the latex coatings " weathering resistance, scratch resistance, water resistance and alkaline resistance, and do not reduce other performances ; polybasic nano - composite powders have more efficient than single nano - powder ; the dispersing method have biggish effect on performances. observing the stability of nano - additive of exterior latex coating showed there was no viscidity rising, no delaminatiom sedimentation in two months. tryout by plant showed that nano - weatherability additive can obviously enhance the weathering resistance of latex coating and water resistance, and no reducing other capabilities
對其性能研究的結果表明，納米粉體材料的引入，可以明顯提高乳膠漆的耐候性、耐洗刷性和耐水耐堿性能，對其它性能無不良影響；納米多元復合粉體比單一粉體的改性效果明顯；納米粉體的添加工藝對改性乳膠漆性能有較大的影響，採用同普通填料一致的添加方式制備的試樣與採用超聲波預分散后在配漆階段加入制備的試樣相比，後者在穩定性、耐候性等方面的性能都有所提高。China grand theater has advanced push and pull lift mechanical stage and orchestra, which offers excellent assurance for the art treatment of performance ; the scientific and rational sound establishment and reinforcement system and top acoustics recording equipment let the high grade and high rank large - scale symphonic concert have best audiovisual effect. in addition, the luxury illmination in the hall, the 1500 luxury and cozy seats in the audience hall and big and small vip drawing rooms which can hold 100 people can all show the splendid and luxury style of china grand theater
中國劇院具有較先進的推拉升降機械舞臺和樂池，為演出的藝術處理提供了良好保障；電腦控制的各類燈具使舞臺的藝術效果大放光彩；科學合理的建聲、擴聲系統和先進的音響錄音設備為舉辦高品位、高檔次的大型交響音樂會提供了最佳的視聽效果。劇院大廳吊裝的華麗燈飾、觀眾廳1500席美觀舒適的新型座椅、可容納100人的大小貴賓休息室等，無不顯示出中國劇院富麗堂皇的豪華氣派。By using of effective mobility power flow method, vibration level and radiated power level of a element cylindrical shell are studied
利用有效導納功率流法研究了基本圓柱殼體的表面振級和聲輻射功率級。The effect of polarons on the luminescence properties of quantum dots ( qds ) is an important problem in qd research and applications. we review the recent progress in the concept, possibility and size dependent energy variance of confined polarons in various qds. we suggest that the formation of polarons is related to intrinsic and / or extrinsic phonons and that the idea of confined polarons that we recently proposed can be used to explain the specific spectrscopic characteristics of oxidized nanosilicon systems, even single nanosilicon structures. this model may help to reveal the luminescence mechanism of porous silicon
量子點中的極化子效應是當前量子點研究中的重要問題，其特徵急需了解.文章在綜述了量子點中限域極化子的概念、可能性和能量隨尺寸的變化規律之後，提出了界面限域極化子模型，該模型首次指明本徵聲子和外來聲子都可能對界面限域極化子的形成有貢獻.作者利用此模型分析了多孔硅體系中的光譜特徵，證實了表面覆有氧化層的納米硅的行為十分符合量子限域極化子的特徵.這一極化子模型與單個納米硅結構的發光譜十分一致，此結果對最終揭示多孔硅發光機理有重要意義Mbss system is a complex system with different kinds of sensors. the author analyzed the main sources of error of the system, studied the synthetic error compensation method for sonar array. besides, methods for pre - processing of on - ship data and combined processing of time and space for depths were also studied, which could remove extremes and enhance the quality of digitized final come out efficiently
多波束測深系統是一個多傳感器組合的復雜系統，本文分析了系統主要誤差的來源，論證了聲納基陣誤差綜合修正方法，並提出了測量數據的預處理方法和測深數據的時間與空間聯合處理方法，可以有效剔除野值，提高數字成果圖的成圖質量。This thesis discusses on the post - processing of sonar signal which includes the search and location of the target, the pattern recognition and the neural networks classification, and also carries out a process of the sea test data with the post - process - programs to verify the validity of the pattern recognition with bp neural network, which helps to develop the sonar image processing and the image processing of other fields
本文在完成課題中的顯示控制任務同時，對聲納信號後置處理，包括目標的搜索定位以及模式識別和神經元網路識別等內容，進行了論述，並利用後置圖像處理程序對正樣機海試數據進行處理，驗證了bp神經元網路下模式識別方法在水聲圖像處理方面的有效性，有助於聲納圖像處理以及其他領域圖像處理的發展。At the same time, the " stop - hop - stop " approximation is no longer valid in sas due to the low speed of sound. the receiver has unavoidable movement, when echoes get to receiver from different distances. in order to overcome the problem, an image forming algorithm of multi - aperture sas is presented in the thesis, which is suitable for the case of non - " stop - hop - stop "
為了解決測距、測速模糊問題， sas通常採用多子陣技術，而且由於sas 「停?走?停」假設往往不再有效，即測繪帶內不同距離回波到達基陣時，基陣存在不可忽略的運動，所以論文提出了一種「停?走?停」假設不成立條件下的多子陣合成孔徑聲納逐點成像演算法以得到相位保真度更高的復圖像。Echosounder is fired on underwater intelligent explored robot and come into watcr. realtane feedback information of height gives main computer on the bank. main computer leads the robot on based of information of height and avoids robot to get in water bottom
本論文的研究目的是為了保障水下智能探測機器人在水下的安全正常運行，將測高聲納安裝在機器人載體上，隨著機器人載體潛入水中，實時反饋高度信息給岸上主機，主機可以根據高度信息引導機器人的操作，可以有效的防止機器人陷入水底。The behaviors of several inorganic nanoparticles ( sio2, al2o3, tio2 ) under ultrasonic irradiation, such as dispersion, crushing and activation, were studied. tem, ftir, spectrophotometry characterized the morphology, structure and dispersion stability of nanoparticles respectively. the results show that the inorganic nanoparticles in the aqueous solution can redisperse more effectively through ultrasonic irradiation than by conventional stirring, which was the basis for monomers to polymerize on the surface of nanoparticles
研究了超聲輻照下多種納米粒子（ sio _ 2 、 al _ 2o _ 3 、 tio _ 2 ）在水體系中的分散、粉碎及活化等各種行為，採用tem 、 ftir 、分光光度法等對納米粒子的形態、結構、分散穩定性進行了表徵，證明超聲輻照比常規攪拌更有效地實現無機納米粒子在液相中的分散，為單體在納米粒子表面的聚合創造了條件。However, wigner - ville distribution is n ' t enough effective applied to multicomponent signals processing for existing crossed items, sometimes signal items completely ca n ' t be distinguished from distribution for serious disturbance of crossed items. in addition, we can utilize the wigner - ville distribution to reduce the random noise of signals in that wigner - ville distribution is n ' t enough sensitive to noise. in theory, radon - wigner transform of lfm signals produces a distinct maxima ( peak ) in the radon - wigner plane, so it describe effectively the feature of the lfm signals and suppress effectively the crossed items along with wigner - ville distribution. we can utilize the radon - wigner transform to reduce the random noise of lfm signals in that the noise distrbute as dot at random in the radon - wigner plane
另外，維格納-威利分佈是完全有噪的，但它對噪聲是不敏感的，因此可以利用維格納-威利分佈實現對含噪信號的去噪處理。理論上線性調頻信號的radon - wigner變換在radon - wigner平面上以尖峰形式表現，因此radon - wigner變換能夠有效描述線性調頻信號的物理特徵，抑制在維格納-威利分佈中產生的交叉項。在radon - wigner平面中隨機噪聲是呈點狀隨機散布開的，因此利用radon - wigner變換還能對含噪線性調頻信號進行去噪處理。The experiment results denoted that ultrasonic surge has no positive effect to the stability of nanoscale m - zro2, which perhaps is related to the insuited technology
實驗結果表明，超聲振蕩對納米m - zro _ 2的穩定性沒有積極效果，這可能與超聲振蕩工藝選擇不當有關。Second discusses adaptive filter ' s application in measuring frequency of cw sonar pulse signal and in towed linear array sonar signal processing. simulation is made about adaptive filter ' s application. simulation result shows that adaptive filter is very powerful tool for underwater acoustic signal processing
接下來本文討論了自適應濾波器在cw聲納脈沖信號測頻和拖曳線列陣聲納信號處理中的應用，並進行了模擬研究，模擬結果表明自適應濾波器是處理水聲信號的十分有效的工具。分享友人