evaporation duct 中文意思是什麼
evaporation duct
解釋
蒸發波導- evaporation : n. 1. 蒸發（作用），發散，升華沉澱作用。2. 脫水（法）。3. 蒸氣。4. （電子的）發射。5. 蒸發量。6. 消散。
- duct : n. 1. 管，導管，輸送管；槽，溝，渠道。2. 【無線電】波道；【電學】（電線，電纜等的）管道。
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A method of evaluating radar oth performance in evaporation duct environments
蒸發波導環境下雷達超視距性能評估方法 -
Analysis of radar detection ability in evaporation duct environment
蒸發波導環境中的雷達探測性能分析 -
Thirdly, the conclusions of the two aspect applications are given as follows : the exploration of the application of the evaporation duct prediction to the flux relationship research and evaporation duct predicting shows that based on this predicting method and with microwave refractometer, as sensor, ( 1 ) the dimensionless gradient function of temperature, humidity and refractivity in the flux relationships can be determined with higher precision, ( 2 ) the limitations of conventional observations on the predicting accuracy for evaporation duct can be avoided and the precise prediction for evaporation duct can be obtained with the accurate measurement of refractivity profile within a few meters. the radar performance under given evaporation
三、對兩個應用問題的討論表明：基於本文發展的蒸發波導預測理論，使用微波折射率儀為傳感器： （ 1 ）開展通量關系研究時，可以用於邊界層溫度、濕度和折射率無量綱梯度函數的精確測定和得到蒸發波導環境預測所需的偽折射率參數化函數關系； （ 2 ）預測蒸蒸發波導環境特性和傳播特性及其應用研究發波導環境時可以避免使用傳統氣海界面要素測量中存在的局限，並用折射率音d面不太高的精確測量結果精確預測蒸發波導環境。 -
According to the results of the field test, the accuracy of this method in predicting the occurrence of evaporation duct arrives at 80 %, the error of the average predicted evaporation duct height is about 28 % with each error ranging from 24. 6 % to 57. 6 % within the measurement height range
根據外場試驗的結果，其預測蒸發波導環境出現的準確率可達到80 ，對平均蒸發波導高度的預測誤差約為28 ，在試驗可測量的高度范圍內，不同蒸發波導高度的誤差在24 . 6 57 . 6之間。 -
So the researches on the characteristics of evaporation duct environment, propagation and its applications have great theoretical significance and are of great value to military
使開展蒸發波導環境特性傳播特性及其應用的研究具有重大理論意義和軍事價值。 -
It is concluded from the investigations that evaporation duct propagations and other tropospheric duct propagations become very complicate multi - discipline problems at present time including em theory, atmospheric science and applied science etc., and one of the tough and hot issues in the field of tropospheric propagation
經過多年的研究，目前蒸發波導傳播等電波傳播問題成為非常復雜的多學科問題，涉及到電磁波理論、大氣科學和應用科學等，成為對流層傳播研究中的一個熱點和難點問題。 -
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。 -
The conclusions derived from these investigations are following : first, the theoretical prediction method of evaporation duct brought forward in this dissertation is successful
對這幾個方面的研究，本文得到了如下結論：一、本文首次提出的以偽折射率為核心相似參量的蒸發波導環境預測理論是成功的。 -
To evaluate accurately the ability of radar in evaporation duct environments, a method is proposed which is combined the electromagnetic waves propagation numerical equation with the theories of radar receiver
該文主要針對如何準確評估蒸發波導環境下雷達的探測能力問題，利用電磁波傳播的數值方程並結合雷達接收機理論，構建了雷達探測定量評估的模型和方法。 -
Radars always display the anomalous performance characteristics such as over the horizon ( oth ) detection capability when they are operated in marine environments because they are influenced by evaporation duct which is a kind of familiar natural phenomenon
摘要蒸發波導是海洋大氣環境中一種常見的自然現象，受其影響，雷達常常出現如超視距探測等異常特徵。
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