矩形信號 的英文怎麼說
中文拼音 [jǔxíngxìnháo]
矩形信號
英文
rectangular signal-
Facilitating the configuration of protocol parameters, optimization of protocol operations, and more exact estimation of protocol performance, etc. basing on combinatorial theory and asymptotic method, we analyzed the properties of manets with nodes uniformly distributed in rectangular region. mathematical formulas of some basic properties of manets are obtained, such as the expected number of wireless links, mean node degree, the relation between network connectivity and radio range
因此本文第二章基於組合學方法和極限思想研究了矩形區域內節點均勻分佈的無線自組網的幾項基本屬性,網路中鏈路總數的期望值,網路中節點度數分佈情況,以及網路連通性與無線信號傳輸半徑的關系等,得出了其解析描述。Fixed railway equipment. material for telecommunication and signalling overhead lines. rectangular tie bars
鐵路固定設備.通信和信號裝置架空線路器材.矩形橫梁Then, according to characteristic of four kinds of butterfly operation in real number signal integer fft transform keeping modulus conjugating with symmetry, different lifting matrixes has been got and real number signal integer fft transform keeping modulus conjugating with symmetry can been achieved
然後,根據實信號保持共軛對稱性的fft整數變換中的四類蝶形運算特點分別構造不同的提升矩陣,從而實現實信號保持共軛對稱性的fft整數變換。Based on the method, this dissertation deals with several kinds of signals including cosine wave ( cw ), linear frequency modulated ( lfm ) and multi - component signal, furthermore the systematic comparison of estimation effect among cwt and several other usual methods as well cramer - rao bound ( crb ) is given
基於上述方法,文中分別對單頻矩形脈沖信號、線性調頻脈沖信號以及多分量信號進行了瞬時頻率估計,並與其他幾種常用瞬時頻率估計方法的性能以及crb進行了系統比較。Oscillator generated a wave with frequency 132 khz as the clock signal
振蕩器電路產生一個頻率在132khz附近抖動的矩形波作為整個電路的時鐘信號。Rectangular connectors for frequencies below 3 mhz ; part 8 : detail specification for connectors, four - signal contacts and earthing contacts for cable screen
頻率低於3mhz的矩形連接器.第8部分:電纜屏蔽用四信號觸點和接地觸點連接器詳細規范Analysis of compression characteristics of gaussian signal pulse in semiconductor optical amplifiers by utilizing rectangular control pulse
矩形控制脈沖在半導體光放大器中對高斯信號脈沖的壓縮效應分析The signal thus received will no longer look like a square wave but will be distorted in shape and spread out in time.
這樣收到的信號看起來不再象矩形波,而是受到畸變,並且持續時間延長了。Second, i transform seismic - electrical data and volcano data worldwide from 1991 to 1999 to appropriate statistic models and analyze them by using the theories of random process and correlation. the results of the study testify that it is correlative between the seismic - electrical abnormal rectangle pulsation signals and volcano eruptions. so the study is a useful exploration for which whether we can monitor and observe worldwide volcanic activity in the whole
接下來應用隨機過程與相關理論的知識,以1991年1月1日至1999年12月31日為統計時間段,以北京工業大學地震研究所南北方向地電脈沖儀所記錄到的地電異常矩形脈沖信號和全球范圍內的火山噴發事件為研究對象;抽取適合分析、又具物理意義的多個統計模型;並對信號模型與噴發模型間進行了詳盡的相關性分析。It has good computational cost because of avoiding any inverse operation and optimal ordering. it also utilizes double - directional detection and diversity combine technology to migrate the error propagation, and then improve the ber performance
它不需要進行任何形式的矩陣求逆運算和最優信號排序操作,因此具有良好的演算法復雜度,同時它利用雙向檢測策略與分集合併技術來抑制誤差傳遞,提高了演算法的檢測性能。Then we set up the model of rectangle - shape pipeline. we compare it to circuit - shape pipeline on sides of the value of induced electromotive force, pressure loss when liquid flow trough the pipeline and resistance ' s value of the sensor. we get the result that we can finish the measurement of low - velocity flow by using the rectangle - shape pipeline
接著對矩形測量導管進行建模,並在流體流經矩形測量導管時產生感應電動勢的大小、流體在測量導管中的壓力損失和傳感器內阻的大小對輸出信號的影響等幾個方面與圓形測量導管進行比較后得出採用矩形測量導管完全能夠有效地完成微流量的測量。Under ideal conditions, adaptive array signal processing methods can get excellent performance and adaptive beamformers provide an improvement in array output signal - to - interference - plus - noise - ratio ( sinr ) in comparison with conventional beamforming. in practical operating circumstances, the performance of adaptive array signal processing methods degrade extremely due to existing errors
但是,在實際系統中總存在有誤差,包括自適應訓練樣本有限次快拍引起的協方差矩陣的估計誤差和各種系統誤差,誤差使得實際陣列流形與理想陣列流形存在差異,這時自適應陣列信號處理的性能會急劇下降。In this circuit, reference current sources are used to charge and discharge capacitors. this oscillator ’ s output is very ideal through control circuit under 5. 7v reference voltage, and oscillator ’ s frequency and duty - cycle could be adjusted if reference current source or capacitors in the circuit was adjusted. and the changes of temperature and voltage affect stabilize of the frequency little
此電路利用系統內部基準源產生的電流信號來對電容進行充放電,然後經過控制電路作用后,產生的輸出振蕩波形的上升時間和下降時間非常小,更接近理想矩形波形;通過調節基準源電流信號或者電容值大小,可調節振蕩波形的頻率和占空比,同時溫度和電壓的變化對振蕩器輸出波形頻率穩定度的影響很小。Hardware design uses high - speed digital signal processor tms320lf2407a as the key control part. software design adopts hexagon stator flux scheme and round stator flux scheme respectively. after the system is set up, the direct torque control method is realized for a 0. 12kw winding asynchronous motor
最後根據以上的討論和實際應用中的情況,分別採用六邊形磁鏈方案和圓形磁鏈方案,以高速數字信號處理器ths320lf2407a作為核心控制部件,在一臺0 . 12kw的繞線式異步電機上實現了異步電機直接轉矩控制。In the proposed technique the bemf waveform of bldcm need to be measured in advance at first, through computer simulation and frame transformation, the optimum q - axis current command is achieved. in order to minimize the torque ripple, the d and 0 - axis current command should be zero. furthermore, through reference frame transformation from dqo - axis to abc - axis, we can get the optimum current command in static abc reference frame
在這種控制方法中首先測量出電機的實際反電動勢波形,然後通過計算機擬合和坐標變換,求得產生恆定電磁轉矩所需的q軸電流,令i _ d ~ * = i _ 0 ~ * = 0 ,通過坐標變換,得到三相靜止坐標系a - b - c下的參考電流i _ a ~ * , i _ b ~ * , i _ c ~ * ,利用電流滯環控制來產生pwm信號,由於這種控制方法中電流不會突變,從而可以較好的抑制轉矩脈動。The goal of the filter is to improve the sensitivity of an optical receiver by optimally filtering a communication signal. in this paper we calculated the temporal response of the matched filter, the commonly used f - p filter, as well as the matched weak ofbg filter. we find that the reflected pulse of weak ofbg closely resembles the triangular shape characteristic of a perfectly matched filter
論文計算了通信系統中矩形光脈沖信號經強、弱ofbg 、匹配光濾波器、 f - p濾波器的輸出光脈沖波形,經分析比較后發現:弱ofbg和理想匹配光濾波器的輸出信號波形極其相似,不存在碼間干擾,而f - p濾波器的輸出波形存在比較嚴重的碼間干擾。Meanwhile, in this paper, the author also designed the processing circuit of mr displacement sensor, the circuit amplifies output signal of the sensor chip and shapes it into rectangle wave, which serves as the input signal of the counter and data acquisition card
同時本文也對mr位移傳感器的信號處理電路進行了分析與設計。把傳感器晶元輸出的正弦信號放大濾波處理為矩形波信號,作為計數器和數據採集卡輸入信號。The second is that the upper computer receives the data sending by the communication software to realize the intelligent detection of net structure. the functions include the displaying of the channels of the data acquisition, the displaying of the curve of the acquiring data, the online and offline data analysis, the saving of acquiring data file, the data file management of hard disk and the configuration file ; the third is that it realizes the time analysis, fft and hilbert by intermixing visual c + + 6. 0 with matlab, which has the strong ability with data analysis, signal processing and graphic displaying, data processing and plenty of tools boxes. it implements these functions including fft and hilbert w ithout using matlab again in the environment of visual c + + 6. 0
上位機監測軟體功能包括通道數據實時顯示、數據實時曲線生成並顯示、實時數據分析、離線數據分析、數據文件保存、磁盤數據文件管理及配置文件管理; ( 3 )使用visualc + + 6 . 0語言作監測系統的實時數據分析的軟體設計,並結合matlab的強大的數值分析、矩陣運算、信號處理和圖形顯示功能及其強大的數據處理能力和豐富的工具箱使數據分析工具,脫離matlab環境,實現visualc + + 6 . 0和matlab混和編程,實現採集的數據實時以及離線時域分析、傅立葉分析和小波分析。The whole processing procedure consists of three steps, i. e., inputting the noisy ap signal to a low - pass filter, constructing a corresponding square wave according to the output of the low - pass filter and then applying it to the wave forming filter to get noise free ap signal
利用矩形波重建方法,將帶噪聲動作電位信號通過低通濾波器建立相應的矩形波,然後再採用計算機輔助設計法設計一個波形形成數字濾波器,使矩形波通過此濾波器后重建出純凈的細胞動作電位。2. the signal correlation spectrum is corrected to rectangle spectrum by using spectrum correcting technique and then added window to restrain distance sidelobe, and all one dimension divided correlation outs are added diversified windows to restrain rate sidelobe
2 、利用譜修正技術把相關輸出信號頻譜修正成矩形頻譜,再加窗抑制距離旁瓣,對所有一維分段相關輸出組縱向加各種窗形抑制速度旁瓣。分享友人