wave duct 中文意思是什麼
wave duct
解釋
波道-
The result can be long distance reception of radio waves that would normally have been far beyond the radio horizon. the equations for ray tracing were given, simulating and tracing electro - magnetic wave duct propagation using spherical layered atmosphere mode, this method is very useful for analysis of radar echo distribution and confirm relation of stratification of atmosphere and ray duct propagation in the process of studying radar second product, introduce a new 3 - d interpolation method. outcome of this method can suit all kinds of density product
在雷達二次產品處理演算法中，討論了一種新的三維插值，比以往在顯示每一個雷達二次產品時，都作一次插值相比，這種方法既節省了總的機時，也提高了每個產品的顯示速度，在討論這種方法后，用幾個產品的實例，說明了這種方法是可行的，並且還討論了等值線的生成原理，在「雷達二次產品處理平臺」下，開發了visualc + +實現程序。 -
After the storm move in shandong area, the moist downdrafts appears, the mgws apart from the thunderstorm and move faster, the mgws weaken gradually because absence of wave duct and energy supply
成熟階段的對流風暴，由於中高層潛熱釋放和濕下沉氣流進一步加強，波動傳播加快； mgws和對流風暴分離后，因無「波道」機制和波能供給，波幅逐漸減小。 -
In chap. 2, the observational characteristics of the radio burst of the bastille event were discussed in detail. in chap. 3, we described the associated foundational theories with the model of a magnetic - mirror loop, consisting of the flux duct, the magnetic reconnection, the plasma wave, the wave - wave interaction and so on. then in chap. 4, using the model of magnetic - mirror loop to estimate quantitatively, we obtain the magnetic field strength, the number of solitons in a single fiber source, the volume of the source and the ducting parameters
對疊加於太陽射電型爆發上的精細結構，作出了觀測特徵分析，發現大多數纖維結構的觀測特徵在米波段和分米波段是相似的，由此提出它們可能源於相似的輻射機制，並採用磁鏡環模型，首次對分米波段的纖維結構進行分析計算，推算了纖維輻射源區磁場強度大小及輻射源的空間尺度，且相關物理參量的推算量級與其他人的研究工作結果是一致的，從而對該爆發源區的物理環境及過程有了進一步深入的認識。 -
In order to utilize the atmospheric duct phenomena, and to make the electronic reconnaissance facilities more effective and the status of battlefield more advantageous, on the basis of classification of the atmospheric duct, first the model for evaluating the effective detective zone of electronic reconnaissance facility is established, then the numerical value simulation method of electromagnetic wave propagation under the condition of surface duct calculated with parabolic equation and fourier arithmetic is presented, and finally the influences of atmospheric duct on electronic reconnaissance facility is analyzed
為充分利用大氣波導條件，發揮電子偵察設備效能，使戰場態勢向有利於己方方向轉化，在介紹大氣波導分類的基礎上，建立評估電子偵察設備的有效探測區的模型，給出用拋物線方程及其分佈傅里葉演算法計算電磁波在表面波導條件下傳播的數值模擬方法，並分析了大氣波導對電子偵察設備的影響情況。 -
In terms of deriving the maximum trapped - wavelength and the critical emitting angle of elevation for electromagnetic wave which can forms duct propagation and introducing the four kinds necessary condition for electromagnetic wave to form duct propagation, under these conditions we now have the radio wave bent back towards the earth
結果與實際觀測到的波導傳播時的回波結構相同，說明，根據不同的大氣層結，利用電磁波的波導傳播的射線追蹤方法可以基本上確定電磁波的傳播軌跡。 -
According to state - of - the - art of evaporation duct propagation research, and to meet the demands on the prediction techniques of evaporation duct environment and the assessment of radar performance under evaporation duct environment, this dissertation gives a thorough research in depth on the subject described above. the researches include the prediction theory of evaporation duct and its applications, the theory of ray tracing based on which the prediction of radio wave rays are conducted and its application to the predicting of radar range performance under a given evaporation duct, and the characteristics of tropospheric ducts over china
根據上述情況，結合我國盡快得到蒸發波導環境預測技術及在其中運作無線電系統的性能預測技術等需求，本文針對蒸發波導傳播及其相關應用這一熱點難點問題較深入地研究了蒸發波導環境預測技術的理論及其應用、蒸發波導環境中雷達探測性能評估所要求的基本理論之一? ?射線描跡技術及其在代表性蒸發波導環境中雷達探測性能評估技術方面的應用和我國應用所需的我國大氣波導環境特性等幾個方面。 -
Clincial application of plasma shock wave lithotripsy for the treatment of postoperative residual stones impacted in biliary duct
等離子體沖擊波碎石術治療膽道鏡難以取出的嵌頓結石
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