通道壓縮 的英文怎麼說
中文拼音 [tōngdàoyāsuō]
通道壓縮
英文
channel compression-
The channel capacity achieved in our experiments was better than that of the dual homodyne coherent state, homodyne coherent state and squeezed state communication when the average photon number exceed 0. 99, 1. 11 and 2. 06 respectively. it is more interesting that we found in the experiment, that the maximum channel capacity for a single mode - fock state communication can be surpassed with our system when the average photon number exceed 11. 302
我們實驗所得密集編碼的通道容量在光子數大於0 . 99 、 1 . 11及2 . 06時將分別超過相干態雙零差通訊通道容量、相干態零差通訊的通道容量以及壓縮態零差通訊的通道容量;最重要的是,當平均光子數(The main research works of this dissertation are aimed to design of radar waveform and the application of wavelets in ultra - wide radar, including : the design of a new kind of hybrid radar and the research of time side - lobe suppression for pulse compression, the design of receiver r adio front end in data acquisition of ultra - wide band radar, the time delay estimation based on wavelets ( packet ) analysis
本文主要進行雷達波形設計研究以及研究小波理論在超寬帶雷達中的應用,集中體現在以下幾個方面:一類新的組合雷達波形設計及壓縮脈沖時間旁瓣抑制技術研究、超寬帶雷達多通道數據採集方法中前端射頻接收部分的設計及研製、基於小波(包)方法的時延估計方法。The second chapter explains the character of mfl data by introducing the principle of pipeline mfl inspection and the structure of mfl detector, and then brings forward the diagnostically lossless compression request by combine discuss the analyzing method of inspection results
第二章通過對管道漏磁檢測原理和檢測器結構的介紹,說明漏磁檢測數據的特徵並結合檢測結果的分析方法提出對管道漏磁檢測數據的檢測無損壓縮要求。Rate - distortion analysis and rate control play a key role in video coding and communication systems by providing the rate - distortion optimized compression performance, assuring the successful network transmission of the coded video data, and achieving the best visual quality at the receiver
為了取得最優化的壓縮效率,確保編碼數據在通道成功傳輸,並在接收端獲得最佳的視頻質量,率失真優化和碼率控制技術具有重要的地位。The blade inner channel cooling is a complex convection - conduction coupling problem. this thesis build a three - dimension. compressible turbulence model, and give a general solve method. with the geometrical model of the glossily rectangle straight channel, the rectangle straight channel with in - line arrays disturb plates, the rectangle straight channel with staggered arrays disturb plates, the rectangle straight channel with slant disturb plates, this thesis compute the flow and heat transfer condition when the cold air path though these channels, and gain the temperature field, pressure field, velocity filed, in addition. this thesis also analyze the influence of the different channel height, the different channel materials, the different channels, and gain the function relation between he nusselt number, friction factor and reynolds number. this thesis is emphasis on the new heat transfer enhancement structure, that is, disturb plates, with the comparison with the glossily channel and channel with pin fins, the heat transfer enhancement effect of the former is better, and the conclusion can be used in the design of aircraft blade
葉片內部通道冷卻是一個復雜的對流?導熱耦合傳熱問題,本文在分析葉片內部通道冷卻的流動與傳熱情況的基礎上,建立了三維、可壓縮紊流的物理模型,得到了通用的求解辦法;利用不帶擾流片的矩形直通道、帶順排擾流片矩形直通道、帶叉排擾流片、帶傾斜擾流片的矩形直通道的幾何模型,計算了冷卻空氣通過這幾種通道時的流動與換熱情況,得到了各種不同情況下計算區域的溫度場、壓力場、速度場;在此基礎上分析了不同的通道高度、不同的葉片通道材質對葉片內部通道冷卻的影響,並整理得到了各種通道形式下,努謝爾數和阻力因子與雷諾數的函數關系;本文重點研究了新型的葉片內部通道冷卻強化傳熱措施?帶擾流片的內部冷卻通道的強化傳熱效果,通過與光滑矩形直通道、帶針肋通道的冷卻效果的比較,表明了這種新型鮚構的優勢,對于葉片內部通道冷卻結構的設計可以起到指導的作用。Our object is an intermediate frequency modem of a software defined radio transmitter - receiver of multi - service, multi - modulationmode and multi - processdatarate. first, related software defined radio theory is introduced ; later, channels of transmitter - receiver are designed with consideration of data format, modulation, fec, interwaving. and scrambling ; emphasis is placed on theory and implementation of an audio compression algorithm cvsd ( continuous variable slope delta modulation ) and a fec technique convolutional coding - decoding
本文首先介紹了相關的軟體無線電理論;然後完成了包括數據格式,調制方式,糾錯碼方式,交織器和擾碼器等部分的中頻數據機通道設計;接著著重介紹了系統中使用的音頻壓縮演算法cvsd (連續可變斜率增量調制)的原理和實現,以及作為前向糾錯碼的卷積碼編碼理論和編解碼的高效實現。At the same time, they process a great deal of data with high rate. these characteristics make them suitable to realize in fpga. pulse compression technology has request of multi - channel and real - time processing when it is applied in software radar
脈沖壓縮技術在軟體雷達中應用時,對信號處理有多通道實時處理的要求,由於其演算法簡單,非常適合於在fpga中實現。To suppress the clutter, noise and detect target, we adopt several advanced sp methods such as pulse compression, mti, mtd, cfar, amplitude - comparison angle measurement and ambiguity resolution, of which we emphase the algorithms of cfar and ambiguity resolution. two cfar algorithms, cell - averaging cfar ( ca - cfar ) and ordered
為了抑制雜波、噪聲和檢測目標,採用了脈沖壓縮、動目標顯示、動目標檢測、恆虛警、單脈沖比幅測角和解模糊等較先進的雷達信號處理技術,並採用了多模式分通道處理方式。Such a structure ? a semiconductor with a disk cut out of it, which squeezes the current through the two narrow channels of semiconductor ? has a much higher resistance than an uninterrupted slab of semiconductor ( which itself has higher resistance than a semiconductor with a disk of metal embedded in it )
這種在半導體中挖個圓洞,把電流壓縮到兩旁狹窄通道的結構,其電阻比起沒有障礙的半導體薄片要大很多(不過後者的電阻又比有金屬圓盤的半導體來得高) 。As an planar waveguide component, it has many advantages, such as its small size, lower cost per port, the relatively low insertion losses, potential for volumn production and integration with active elements
作為一種平板光波導型波分復用器, awg具有很多優點:體積小,可批量生產;高通道數,大小可壓縮;較低的插入損耗;單個通道的成本低;還可以與其它功能整合。Although stb just is a sort of terminal equipments of the tv signal transmission system, however pivotal technique involves the data demodulation, channel decode, transport stream de - multiplexing, audio and video signal decompression technique and real - time software technique with upriver data coding technique etc. therefore, software and hardware technology research and development of stb, which can increase usefulness with dependable of digital video signal and audio signal for study later make the theories preparation and backlog experience
機頂盒雖然只是數字電視傳輸系統的終端設備,但所用到的關鍵技術涉及到數據解調、通道解碼、傳輸流的解復用、音視頻信號解壓縮技術以及實時軟體技術和上行數據的編碼技術等。因此,通過對機頂盒軟、硬體的研究開發,既能為以後研究如何提高信息傳輸的有效性和可靠性作理論上的準備,也為圖像信號和音頻信號的數字化處理積累經驗。Then a one - dimensional unsteady incompressible flow with moving pollutant source model was proposed. the continuity equation, momentum equation and convection - diffusion equation were discredited using finite volume scheme. thus a software for predicting the air velocity and pollutant in railway double track tunnels was developed
接著,根據雙線鐵路隧道運營通風的特點,建立了一維不可壓縮非恆定流和流動污染源的物理模型以及山相應的連續性方程、動量方程和對流擴散方程構成的數學模型;在此基礎上,利用數值計算方法,編制了一套雙線鐵路隧道運營通風的數值計算程序。One - piece has no potential body leak path, but requires use of reduced port ball ; thus, significant pressure drop. not repairable
整體式:沒有潛在的閥體泄漏通道,但是要求採用縮徑流道球體;因此,壓降明顯。無法維修。The input video is sampled at the transmitter of the sub - system, and code stream is sent to channel after compression. at the receiver, output video is reconstructed after decompression
在發送端對輸入的視頻信號進行數字採集、壓縮,壓縮后的數據流經通道傳輸至接收端解壓縮,輸出顯示。Research of error resilience technology for video communication based on h. 263 codec major : signal and information processing data : author : meng yan signature : tutor : zhang erhu liu shichang signature : abstract the reconstructed image quality can be degraded substantially by errors during the transmitting over the communication channel, especially when the video is compressed by temporal and spatial coding ways, which leads to error propagation in frame sequence, so the error resilience procedure should be performed to improve the reconstruction quality
由於通信系統的通道不可避免的存在噪聲,傳輸數據流必然存在誤碼。對于h . 26x的視頻編碼流,由於空域和時域的壓縮方法以及熵編碼方法的應用,即使是一個比特的錯誤,常會影響一個區域的圖像不能正確解碼,同時錯誤的圖像還會擴散影響后續數幀圖像。因此有必要在標準解碼程序的基礎上,添加容錯功能。This article describes the plc ’ s using enviroment and the users ’ needs in details, and then tells the differences between the dplc and the troditional plc. it also describes how to decimation and compress the tele - voice, how to deal with the data tunnels, and the multiplex data through the the line which ’ s bandwidth is changeable between 10. 8bps and 28. 8kbps this project uses the programmable vopp chips, the cpld for bus controlling, the fpga and the mcu with high processing ability. all of these ensure the high ability to process the signals and the operations
本文詳細介紹了高壓電力線載波機的使用環境和用戶需求,全數字電力載波機和傳統模擬載波的的差異;按電力調度的需求設計完整的兩路語音、兩路數據的電力線載波通訊機。詳細描述電話語音的采樣,壓縮;數據通道的處理;及在10 . 8kbps 28 . 8kbps可變線路速率通道上的數據復接處理。從實現方法上看,該項目採用專用可編程vopp語音處理晶元, cpld晶元做為總線控制,大規模fpga集成電路,高處理能力的mcu 。The results could be useful for fire alarm system design, which can decrease the visual load, help firefighters ' detection more efficiently, and reduce the casualty
實驗結果為設計者在消防界面中使用語音信號提供了依據,有助於緩解視覺通道壓力,提高信息獲取的速度和準確性,從而縮短火情偵察的時間與范圍,降低火災傷亡。The research and contribution in detail are introduced as follow : ( 1 ) the driver characteristics > motor vehicle characteristics, road characteristics, macroscopic and microscopic flow parameters are analyzed. a new traffic flow continuum hypothesis is proposed. the compression index and elasticity coefficient are defined
具體工作如下: ( 1 )綜合分析了交通流中駕駛員的交通特性、車輛的交通特性、道路的交通特性、交通流的宏觀參數和微觀參數,提出了新的交通流連續性假設,定義了衡量交通流壓縮性的壓縮系數和彈性系數,分析了各種速度-密度模型所對應的壓縮系數。Channel shortening in ifdma - simo system
系統的通道壓縮Compared with situations of without tunnel hoods and 3 different kinds of tunnel hoods, the relationships of the max pressure, the gradient of the pressure and the velocity of the train are attained and the propagation process of the compression waves in tunnel is verified
通過在對無緩沖結構和三種不同形式緩沖結構條件下,分析高速列車模型實驗測試數據,得到了隧道壓縮波最大值及隧道壓縮波梯度最大值與速度的關系,驗證了隧道壓縮波在隧道內的傳播過程。分享友人