multilevel transmission 中文意思是什麼
multilevel transmission
解釋
多電平傳輸- transmission : n 遞送；傳遞；傳達；傳染；移轉；【機械工程】傳動；傳遞；變速器；聯動機件；【無線電】傳送；發射；...
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The basic technologic scheme on microwave transmission, currently maturate and advanced microwave transfer technology and equipment, efficiency slot gap antenna, character quality filter, mixer, exact crystalloid concussion apparatus, power backspacing technology, pre - distortion adjustment. furthermore, the technologic schemes practicing using multilevel microwave transfer technology in some areas such as lengshuijiang is introduced in the paper
採用了當前比較成熟、先進的微波傳輸技術和設備，如高效的縫隙天線、高品質濾波器、混合器、高精密的晶體震蕩器、功率回退技術、預失真校正技術，結合工程實際，設計了湖南電廣網路33家合資公司的mmds無線微波數字電視覆蓋的基本技術方案，和個別地區（冷水江市數字微波工程）的多級微波傳輸的具體技術方案。 -
The following is the main works and conclusions of this thesis. the novel upfc needs high power rate because it is generally used in high voltage transmission lines. after studied high - power converters and the literatures of upfc, the main circuit topology of novel upfc base on diode - clamping multilevel inverter is presented and the principle of using novel upfc to eliminate zero sequence and negative sequence currents is analyzed
本文所做的主要工作及得出的主要結論如下：由於upfc一般用於高壓輸電線，其功率等級要求很高，在綜合研究大功率變換器和upfc現有文獻的基礎上，提出了基於二極體箝位多電平變換器的新型upfc的主電路拓撲，分析了用其來濾出高壓輸電線非全相運行時所產生的零序和負序電流的原理。 -
The former is used on message service, ensuring the multilevel, reliable message communication between services, the latter is used on reliable transfer service, guaranteeing the reliable message transmission over different network
前者應用在報文服務中，保證報文在服務之間發送的多級可靠性;後者應用於可靠傳輸服務中，保證消息在各種不同網路條件下傳輸的可靠性。 -
In the paper, theories and functions of the whole system are introduced, the typical theories and algorithms of relay protection employed in the system are lucubrated, the configuration of relay protections is researched, the demonstration constitution schemes are determined, the psd remote program upgrading method based on 80c196kc is provided, the relay protection software is designed based modular structure and in which the technologies of pts data transmission and the lcd multilevel menus which contain chinese characters and graphs are adopted, a configuration software design method is provided for adapting the need of training of different structure of substations, and a set of teaching, experimental and training software which has good teaching effects and has innovation to some extent is designed
本文介紹了整個系統的結構、原理和功能，深入地研究了本系統所用的典型微機保護原理與演算法；研究了保護的配置；確定了變電站綜合自動化系統的示範構成方案；提出了基於80c196kc的psd微機保護遠程程序升級方法；設計了裝置保護軟體，軟體模塊化設計、流程清晰，並採用了pts數據傳送和lcd圖形和多級漢字菜單設計等技術；適應對不同結構的變電站培訓的需要，提出了一種組態軟體設計方法；設計了教學性好、啟迪性強、可靈活組態的教學實驗培訓軟體，有一定的創新性。 -
Based on the existent theory and the engineering application, the thesis study the good performance by combined the adaptive modulation technology and the multilevel modulation technology on the simulink model. experiment results show that this combination bring on the high data transmittable efficiency and the well transmission quality. this chapter is a base of next chapter
根據已提出的基本理論，論文基於工程應用，在模擬模型上對自適應調制和多元調制方式的結合所產生的優良的性能進行了探討，模擬顯示出這種結合帶來的高數據傳輸效率和大的傳輸質量改善，本章是第三章的基礎。 -
Multi - carrier adaptive multilevel modulation technology maybe regards as a kind of transform combination by n single - carrier adaptive multilevel modulation technology approximatively. multi - carrier transmission can improve performance of the attenuation consumedly but single - carrier transmission ca n ' t
多載波自適應多元調制可以近似看成由n個單載波多元調制的變換組合，但由多載波傳輸對衰落的改善是單載波傳輸所不能比擬的。 -
Chapter 3 studied the results that come from the combination of the multi - carrier transmission technology and the adaptive multilevel modulation technology in detail, and bringed up to apply the technology to wireless channel transmission. the feasibility and advantage been testified by computer simulink
第三章詳細討論了多載波傳輸和自適應多元調制相結合的效果，提出將這種技術應用於無線通道傳輸的想法並模擬證明其可行性和優越性。
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