重型通信衛星 的英文怎麼說
中文拼音 [zhòngxíngtōngxìnwèixīng]
重型通信衛星
英文
heavy communication satellite- 重 : 重Ⅰ名詞（重量; 分量） weight Ⅱ動詞（重視） lay [place put] stress on; place value upon; attach im...
- 通 : 通量詞（用於動作）
- 衛 : Ⅰ動詞（保衛） defend; guard; protect Ⅱ名詞1 （周朝國名） wei a state in the zhou dynasty2 （姓氏...
- 星 : 名詞1 （夜晚天空中閃爍發光的天體） star 2 [天文學] （宇宙間能發射光或反射光的天體） heavenly body...
- 重型 : heavy （duty）; heavy type重型車輛 heavy vehicle; 重型航空母艦 heavy aircraft; battle aircraft; ...
- 通信 : communication; communicate by letter; correspond
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It contributes to the deeper comprehesion of these probability distributions, affords more detailed theoretical basis for further studying and simulating satellite mobile channels, ? theoretical analyses and discussions of the models which are often used in the study of the propagating characteristics of satallite mobile channels are given ; meantime, some discussions on the work of model simulations are also given, ? incorrect derivation of the equality between c. loo model and corazza model in some other papers is pointed out. via the conception of received power, we derivate that in the rural environments these two models really have the equal relationship by the way of theoretical derivation and simulatant fittings. therefore, it is able to use corazza model in studying the characteristics of satellite mobile channels in the rural environments and able to avoid the iterant work of modeling, in order to enhance the efficiency and accuracy of research work, ? detailed processes of simulating lutz model by using matlab6. 0 _ simulink4. 0 and the results of comparisions are given
本文包含有以下的主要內容： ?對衛星移動通信通道傳播特性研究中常用的三個概率分佈給出了詳細的推導過程；以便對這幾個在衛星移動通信通道傳播特性的研究中常用的概率分佈函數有更深的理解，對進一步研究衛星移動通信通道傳播特性和對通道的建模提供了更為詳盡的理論基礎； ?對衛星移動通信通道傳播特性的研究中常用的通道模型進行了理論上的分析和討論，並對衛星移動通信通道建模的研究工作提出了一定的看法； ?指出了以前的文獻中關于c . loo模型和corazza模型的等同性的證明錯誤；並從接收信號功率的角度出發，通過理論推導及模擬曲線擬合重新證明了在鄉村環境下，這兩個模型的確是具有等同性的；從而在對鄉村環境下的衛星移動通信通道傳播特性進行研究時，可以只採用corazza模型來對實際的通道進行建模，這樣可以避免重復的建模工作並提高研究工作的效率和準確性； ?給出了lutz模型在matlab6 . 0 _ simulink4 . 0環境下的軟體模擬實現的詳細過程和整體模擬測試的對比結果，保證了該模型在硬體實現時的可靠性和可行性，從而可以將它們應用於指導模型的硬體模擬實現並可以降低硬體實現時的風險。Precision transmission device is one kind of the key fundamental components, which are extensively applied to many industry fields including robot industry, machine industry, instrument industry etc. with the development of information technology and space navigation technology, especially the micro - miniaturization, speediness and automation of satellite communication, scouting the flying project, remote sensing and measuring and astronomic observation antenna system, more hard requirements are demanded on precision transmission
精密傳動是一種重要的基礎性零部件，在機器人、機床、儀器儀表等工業領域有著廣泛的應用。隨著信息和宇航科學技術的發展，特別是衛星通信、飛行目標跟蹤與攔截、遙感與遙測、天文觀察等天線系統的微小型化、快速化及自動化，對精密傳動提出了更高的要求。To attract advanced technology and equipment, develop new products and focus on developing microeletronics, pc and civil - pur - pose electrical appliances, satellite telecommunication equipment, digi - tal telecommunication multimedia, integrated circuit, electronic mea - suring instrument, new type electric components, sensors, etc
引進先進技術和設備，開發新產品，重點發展微電子產業、個人計算機、民用電器、衛星通訊設備、數字通信多媒體系統、集成電路、電子測量儀器、新型電子元器件、傳感器等。According to the condition of china, this paper mainly studied the technology of field information acquisition and process based on gps, gis and virtual instrument. the main contents of this paper include : 1 ) based on the analysis of the principle of gps location and output - sentence format, the hardware interface and communication software were developed for oem gps receiver and computer to realize gps - data real - time acquisition by computer
本文結合我國的實際情況，重點研究了基於gps 、 gis及虛擬儀器的農田信息的採集與處理技術，主要研究內容如下： 1 ）在分析gps衛星定位原理及輸出語句數據格式的基礎上，設計了oem型gps接收機與計算機的硬體介面及windows通訊程序，實現了gps數據的計算機實時採集。分享友人