filter paper analysis 中文意思是什麼
filter paper analysis
解釋
濾紙分析-
In order to satisfy the veracity and the robustness against time - variable noise of the aoct, a new square root kalman adaptive filter arithmetic with time - variable noise statistic is presented in this paper. in addition, the wavelet analysis is applied to inspect the singularity of the measured current, and an adaptive signal - noise decomposer for aoct is designed
為了滿足aoct自適應控制的準確性和時變噪聲魯棒性的要求，論文將kalman濾波理論引入到自適應濾波中，並應用矩陣理論提出了一種新的時變噪聲統計的平方根kalman自適應演算法。 -
Determination of separating capacity for chemical analysis filter paper
化學分析濾紙分離性能的測定法 -
The second, the main work in the paper is discussed. they are include : the theory and character of electromagnetic leaking from a computer ; the theory of accumulation mean filter and pectination filter ; the analysis of synchronous signal precision, at 10 - 12 second level, for stably intercepting ; the technology requirement of receiver and data acquisition board for clearly displaying the images recovered from the intercepted data
本文從計算機視頻電磁泄漏和數字濾波器兩方面的基本理論出發，詳細論述了計算機視頻信息電磁泄漏的原理及特點，指出視頻泄漏信息的頻譜是以行頻為周期的譜線；分析了重加濾波器和梳狀濾波器的性能；分析了視頻泄漏信息截獲的條件；推導出穩定截獲視頻泄漏信息需要對同步信號的精度控制在皮秒級；論述了清晰再現對接收機和數據採集卡的技術要求。 -
In this paper, the main research works are as follows : 1 ) survey and analysis previous work in auv navigation and summarize : as the cumulate error, the dead - reckoning and inertial navigation systems ca n ' t be used without other modified system ; the acoustic navigation system is used only in small range, and is very expensive. 2 ) two important approaches in geophysical navigation techniques are summarized, one is terrain contour based navigation, this approach is investigated keystone today ; the other is image based navigation, due to no perfect image sensors and image seabed map, this approach has seldom been practised. 3 ) two important terrain contour based navigation algorithms has been applied to auv, one is match algorithm - based terrain contour match ( tercom ) ; the other is kalman filter - based sandia inertia terrain - aided navigation ( sitan )
主要研究內容包括：一、總結分析了當前水下導航的常用方法和不足之處，指出基於航位推算的導航方法，存在著最大的問題就是導航誤差的積累問題，如果沒有修正系統，這種方法很難滿足使用要求；其次指出基於聲學的導航方法，造價昂貴，導航范圍有限，難以滿足自主水下航行器大范圍導航的需求；二、總結了當前水下地形輔助導航的主要技術路線，一是基於地形高程的匹配方法，這是當前研究的重點；二是基於地形圖像的匹配方法，由於缺乏良好的圖像傳感器，和可用的海底圖像地圖，目前這種方法還有待研究發展；三、將兩種地形高程匹配的常用方法應用到自主水下航行器上：以相關演算法為前提的地形輪廓匹配（ tercom ）方法和以卡爾曼濾波為基礎的桑迪亞慣性地形輔助導航（ sitan ）方法，前者演算法簡單可靠，但是導航精度不高，後者雖然精度比較高，但存在著演算法較為復雜、有可能發散和出現奇異值等問題。 -
The error of hall element is analysed and the compensative method is provided ; this paper makes the theoretical analysis of errors producing by the instrument amplifier and a / d converter. we adopt the technology of digital filter and linearization implementing by the neural network method
對霍爾元件的誤差進行分析並給出補償方法；對儀表放大器和a d轉換器引起的誤差進行了理論分析；採用了數字濾波技術和採用神經網路方法實現的非線性校正技術進行軟體補償。 -
At the part of empirical study, this paper chooses 124 a - stock listed companies from stock exchange of shanghai and shenzhen as research samples, makes use of the step method to filter the 13 possible variables ( including 3 debt - paying ability indexes, 3 operating ability indexes, 4 profitability indexes and 3 cash flow indexes ) in analysis and finally sets up discrimimant models by fisher discrimimant rules with the samples " financial data. then this paper validates the stability of these models using the self - validation and cross - validation before analyzing the prediction ability of these models with outside - validation
實證研究部分主要以我國深、滬兩市124家上市公司為研究樣本，採用上市公司1998年至2001年的實際財務數據，運用逐步判別分析方法對擬進入模型的13個變量（包括3個償債能力指標、 3個經營能力指標、 4個獲利能力指標及3個現金流量指標）進行篩選，並根據fisher判別準則建立判別模型，在運用自身驗證法與互動式驗證法對模型的穩定性加以驗證后，運用外部數據驗證法對模型的預測能力進行了分析。 -
This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上，將通信理論中的直接序列擴頻技術（ dsss ）用於解決低壓電力線通信的干擾問題，主要研究內容如下： （ 1 ）用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析，分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析，驗證dsss技術在本系統中的可行性； （ 2 ）由dsss技術對濾波系統的要求，根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路； （ 3 ）用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路，構造出低壓電力線載波通信系統，並採用atmel公司的單片機設計了接收和發射電路的微控制器； （ 4 ）分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗，並對結果進行分析，驗證了dsss技術對干擾信號的抑制作用。 -
The paper also studied the structure of lms adaptive filter and the theoretical analysis of astringency by deducing the equal square error of the weigh value in the msn linear filtering
在mse線性濾波中權值的均方誤差函數的推導的基礎上，對lms自適應濾波器的結構和收斂性的理論分析進行了研究。 -
The final results obtained in this paper contained that the optimal interpolation scheme highlighted by the covariance that the correlation between different time and the correlation between different place being considered ; that the simplification of kalman filter with the singular - value decomposition ( svd ) and the direct construction of state transition matrix pfeceded with " inverse vector expression " ; and that the analysis of t / p data and its blending with theoretical model
這些成果包括：建立考慮了時間相關的方差矩陣和時空相關的最優插值演算法；對卡爾曼濾波演算法進行了svd簡化以及建立了顯式的狀態轉移矩陣；將t p實時衛星數據進行調和分析並與數值模型進行同化處理。 -
This paper utilizes stochastic optimal control theory, ito formula in stochastic analysis and nonlinear filter technique to maximize the expected utility from the terminal wealth
本文運用隨機最優控制理論、隨機分析中的it （ ? ）公式及非線性濾波技術，研究投資者極大化終止時刻期望效用的最優投資策略問題。 -
In order to improve the agility of integration system, this paper analysis the fault effect of heterogeneous data flow in the integration system ; design the integration mode of agile system ; the evaluation is done base on the integration mode ; the gateway system technology is proposed to integrate the heterogeneous system ; also this paper carries out the concept of gateway system, the topology of gateway system, the data filter protocol in the gateway system, the data filter protocol algorithm, the data flux in the gateway system and the work capability of gateway system.
本文以提高系統敏捷性為目標，在大規模、復雜、動態進化系統環境下，考慮了大量需要交互的數據的異構性對敏捷系統性能造成的不良影響，設計了敏捷系統集成模型，並且對這個模型作了評價。在集成異構系統時採用的關鍵技術是網關系統技術，本文詳細討論了網關系統的概念，網關系統的網路拓撲結構，數據過濾協議，數據過濾演算法，網關系統中網關節點中的數據流量及網關系統的工作能力，有利於保證集成子系統服務質量的要求，在一定程度上解決了上述單節點網關存在的缺點。 -
Thus, the frequency domain adaptive filter is well suited to a multi - narrowband interference scenario, the paper studied frequency domain adaptive algorithms, carried out analysis and computer simulations. simulation results : for gold codes ds - ss signal of length 63, 4 interferences of signal to interference ratio ( sir ) 40 ub or 4 narrowband interferences of signal to interference ratio ( sir ) 40 db and frequency - spectrum bandwidth 12 percent of the whole bandwidth, the sir improvement is better than 20db
模擬結果指出，在輸入信號為干擾是4個等強度的多音干擾或4個頻譜帶寬占信號總帶寬12的強窄帶干擾（干信比為40db ）的擴頻信號（碼長為63的gold碼序列）情況下，演算法的干擾抑制比均優於20db 。 -
Based on the analysis of the theory, the paper put forward the method of the analysis and design of the sc filter by the discrete time signal method using the basic switch blocks combined with the fabrication convenience, mature technology, low power consumption, higher integrated cmos process
在理論分析的基礎上，論文提出了結合現在尋求代工方便、技術比較成熟、功耗低、集成度高的cmos工藝技術，利用常用的基本開關模塊，用離散時間信號的方法來分析和實現開關電容濾波器。 -
The algorithm of strapdown inertial navigation system is also discussed and then use the flight - track generator to give a simulation, since a closed loop feedback integrated navigation system is designed in this paper, and the output of the filter must feed back to the strapdown inertial navigation system, the analysis of the algorithm in strapdown inertial navigation system is important. the scheme to design the trajectory of gps and the simulation of gps constellation are then studied, the simulation of gps constellation is given from the calculation of vernal equinox base on the principle of celestial mechanics, this method of different from other methods given by other paper and is useful to the research of satellite navigation system. a new method to abstract noise modal in integrated navigation system is proved to be useful in practice, this method, which is given by use the principles of stochastic processes, statistics, time series analysis, and system identification, is suitable for the kalman filter in integrated navigation system
如航跡產生器的設計，該航跡產生器是研究組合導航問題的前提，從國外一些研究組合導航系統的文獻中可以看出，設計這樣一個航跡產生器是非常必要的，所以本文自行設計了這樣一個系統；還討論了捷聯慣性導航系統中捷聯解算的方法，並進行了模擬研究，由於在本文設計的閉環反饋式組合導航系統中，對捷聯慣導系統的平臺誤差進行閉環控制，需要將濾波器輸出的校正量反饋到捷聯解算內部，所以必須對捷聯解算進行深入的研究和分析，更何況捷聯解算問題本身也是導航界的一個熱門研究課題；另外，本文還介紹了gps軌道及其星座模擬的設計思想和方案，與以往gps軌道和星座模擬不同的是本文從天體力學中計算春分點開始，逐步進行gps軌道及其星座模擬，這樣的設計方法對從事衛星導航的研究工作是有價值的；還對組合導航中誤差建模方法進行了研究，綜合運用隨機過程、概率統計、時序分析及系統辯識等方面的理論提出了一套適合組合導航卡爾曼濾波的誤差建模方法，並運用實際研究工作中的測量數據對該方法進行了驗證。 -
Then according to the emphasis of the design, went deeply into the theory of pll frequency synthesizers widely used, described pll ’ s working principle, structure and several types in detail, and made research and analysis of pll frequency synthesizers ’ phase noise, including the effect of the active loop filter on the phase noise, and give some methods to make improvement as well, such as changing loop filter form, reducing divide number, and increase phase detector frequency, etc. then paper introduced the principle character and phase noise analysis of direct digital frequency synthesizer ( dds ) and injection phase lock circuit, which are also important circuits in the design
論文首先對幾十年頻率合成器的發展進行概述，而後針對本次設計的重點，對應用較為廣泛的鎖相頻率合成理論進行了深入的探討，詳細介紹了鎖相環的工作原理、組成結構和鎖相類型，並對鎖相頻率合成器的相噪特性進行了研究分析，包括有源環路濾波器對于相噪的影響，提出了改善相位噪聲的幾點措施:改善環路形式、降低分頻數、增大鑒相頻率等。接著介紹了直接數字頻率合成器（ dds ）和注入鎖相電路的原理特點以及相噪分析，它們也是本次設計的重要電路。 -
This paper also analysis the emc of the element in pcb. for the surface acoustic wave filter offered from certain academe, material analyse and account have adopted in the finding route of coupling and the measure of anti - jamming
論文分析了pcb上器件的電磁兼容，對具體的某研究所提供的聲表面波濾波器，在找出干擾途徑以及採取對應措施過程中進行了具體分析計算。 -
Conventional detector ( single - user matched filter ) distinguishes each user by the crosscorrelation of their spread - spectrum codes. in practice, however, its performance is much deteriorated due to the existence of noise in channel and strong multi - access interference, i. e. near for effect. a new method using independent component analysis is proposed in this paper. the - received energy of signals is controlled effectively, thus the near - far effect is overcome as much as possible ; moreover, the effect that noise imposed on the detector is mostly reduced. simulations verify the effectiveness of this method
傳統檢測器（單用戶匹配濾波）利用擴頻碼之間的互相關特性來區分各用戶信號.而在實際應用中，通道噪聲和近距離用戶對遠距離用戶的強多址干擾即遠近效應，使得接收機的性能受到很大影響.本文將獨立分量分析法引入傳統接收機，有效控制接收信號的能量，從而極大地提高了接收機的抗遠近性能，同時噪聲的影響被盡可能消除.模擬結果表明了該方法的有效性和可行性 -
In this paper, the principle of spread sequence communication and all kind of the current multi - user detection techniques and the independent component analysis ( ica ) algorithm are respectively analyzed completely in chapter ii, chapter iii and chapter iv. based on the statistical feature of multi - user signal that the signal of every user ' s and every channel is statistical independent with each other and take the same distribution, the mathematical model of the received multi - user signal is fully researched, then the blind signal detection algorithm is introduced into the multi - user signal detection, two new algorithms of multi - user detection are proposed : multi - user detection based on the delay estimation of downlink using ica in ds - cdma and based on ica post processing matched filter multi - user detection
本文比較全面的從第二章到第四章分別介紹了cdma擴頻通信的原理和現有的各種多用戶檢測技術以及獨立分量分析（ ica : independentcomponentanalysis ）這種盲源分離演算法，並在此基礎上，從多用戶信號的統計獨立同分佈的統計特徵出發，分析研究了cdma通信中多用戶信號的數學模型，將盲源分離技術應用到多用戶信號檢測當中來，提出了兩種盲多用戶檢測的策略：基於獨立分量分析的下行鏈路延遲估計的多用戶檢測演算法；基於獨立分量分析后處理的匹配濾波多用戶檢測。 -
Considering the filter paper as the sound - absorbing material, the filter paper is then taken into account in the analysis of the air cleaner, in which the acoustic characteristics of the filter paper is modeled with the empirical expressions of fibrous materials
同時，空氣濾清器中的濾紙大多是纖維材料，可以作為吸聲材料來處理，所以在考慮濾紙的情況下分析空氣濾清器的消聲性能，其中以纖維吸聲材料的經驗公式來模擬濾紙的聲學特性。 -
In this paper, both speckles filtering in space and wavelet based methods is used to reduce the speckle. analysis is done to compare the result of filtering. the paper uses enhanced lee filter, unbiased gmap algorithm, shrinking of wavelet coefficients algorithm, wavelet analysis with wiener filter, wavelet analysis with space filter to filter the speckle in four different sar images, and gives a suggestion for the choice of right filter in different situation
分別選用增強lee濾波演算法、無偏gmap演算法、小波系數壓縮濾波演算法、小波變換與維納濾波相結合、小波變換與空間濾波相結合的方法對四幅不同的sar圖像進行濾波，指出了各濾波演算法對不同圖像處理的優缺點，給出了在不同應用環境下，選擇使用不同濾波器的意見。
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