gain in precision 中文意思是什麼
gain in precision
解釋
精確度增益-
The numerical simulation equations of the border curves in term of and as well as the matching rules and the frequency dependence of microwave electromagnetic parameters of a broad - band homogeneous absorbing coating with a finite value of reflection loss are available. these results pointed out the direction to develop rams ". according to the radar - absorbing model, the optimized design of rams with thin - layer, light - weight, broadband and strong - absorbing is available by the simple genetic algorithms, which can effectively conduct the research work of rams to the detail. small but completely, the electromagnetic parameter ' s databases of rams that based on actual microwave absorbers have been set up, the object function has been constructed which conform to the involved goals, the adaptive coding measure is taken which extends the coding length dynamically adapting to the condition of the number of actual absorbers or the precision of thickness and absorber - volume - percentage, the decoding technique is initiated which satisfies light - weight and strong - absorbing as well as thin - layer and broadband by adopting of tracing variable restricting conditions dynamically to control total thickness. when decoding, the variable restricting conditions of thickness are dynamically traced, so gain the radar absorbing coatings of light - weight multiple - layer single - ingredient. similary, of thickness and absorber - volume - percentage, of light - weight multiple - layer multiple - ingredient. also, the rams ' demand to radar - absorb performance as frequency is met making use of the penalty function
作為遺傳演算法的具體實施：根據本實驗室近來研製的吸波材料，建立了吸波材料的相關數據庫；構造了能真實體現「薄、輕、寬、強」優化目標的目標函數；根據材料的實際數量以及塗層厚度精度要求、吸收劑體積分數精度要求，建立了能動態擴展相應碼長的自適應編碼方法；首創了通過動態跟蹤變量的約束條件來控制塗層總厚度的解碼技術，以此實現了在不弱化寬頻、高強的吸波性能目標的同時，兼顧到薄層、輕質的使用性能要求；在解碼時通過動態跟蹤厚度變量的約束條件，實現了多層單組分吸波塗層對重量輕的要求；通過動態跟蹤厚度變量的約束條件和吸收劑體積分數的約束條件，實現了多層多組分吸波塗層對重量輕的要求；使用權重系數變化法，實現了吸波塗層的分頻段吸波性能要求。 -
To gain a higher precision of retrieval, the method of pixel information decomposition is introduced in. the method is to divide ground objects correspond to a pixel in to several basic components : soil, vegetation, moisture, water, and ice, and then, using remote sensing data, calculate the contents of every components according to the model by which the component ' s spectrum compose
為獲得較高的反演精度，採取象元組分信息分解的方法，將象元對應地物分解為土壤、植被、水分、水體、雪被等基本組分，然後根據這些組分的光譜組合模型用遙感數據計算象元中各組分含量，再根據組分含量反演半球反射率和反照率。 -
In order to improve test precision, techniques such as auto - gain control, proper sampling rate select and dithering should be applied into the data acquisition process, and data pre - processing techniques should be used to eliminate data with careless error and correct data with system error
為了提高測試精度，在數據採集中，可以採用量程自動切換、合理的采樣頻率以及加擾技術；對採集的數據，需要進行預處理，主要包括剔除含有粗大誤差的數據和消除系統誤差等。 -
According the result author concludes that the autopilot gain both of the two control systems " advantage, it owns pid controller " s high precision in stable state and also has rapid response property
最終的模擬結果表明，智能控制在船舶航向控制方面其優越性大大超過了傳統控制方法的自動舵，其應用和發展前景是廣闊的。 -
In this paper, they are set forth at first that the kinds of computer - simulation of electronic devices, the development and the requirements of mosfet ' s model and the way of gain the models " parameters, the dc models have been bui it in chapter 2 and the models of big signals have been deduced in chapter 3, they are different from the equivalent circuit models in the traditional software pspice that they come from the numer i ca i - s i mu i at i on wh i ch is based on the essence equat i on, so the precision of simulation is enhanced ? mosfet ' s small signal models of low frequency, intermediate frequency and high frequency have been built in chapter 4 and chapter 5, although the equivalent circuit models in pspice are used for reference to bui id them, they have their own characteristics which are analyzed at a i i kinds of situations, so that the simulation software for mosfet can be written according them and it i s a i so benef i c i a i for us to catch the gen i us character i st i cs of mosfet and to d esign all kinds of applicable devices the correctness of the models is simply proved in chapter 6
本文首先介紹了電子器件計算機模擬的分類、 mosfet的建模發展動態、對器件模型的要求以及模型參數的提取方法。在第二章中建立了mos晶體管在直流端電壓條件下的工作模型；第三章推導了mosfet的大信號模型，這兩類模型不同於傳統模擬軟體例如pspice中的等效電路模型，而是從模型方程出發，採用數值模擬的方法，提高了模擬的精度。第四章和第五章分別建立了mos晶體管低頻、中頻、高頻的小信號模型，雖然借鑒了pspice模擬軟體中用等效電路模型的方法，但是本文分別討論了準靜態和非準靜態時器件的本徵部分以及包含非本徵部分工作于低頻、中頻和高頻條件時的模型，可以根據這些模型編寫相應的模擬軟體，這樣在做器件的模擬分析與器件設計的時候，就可以利用模擬軟體逐步深入地分析器件在不同的條件下和器件的不同部分在工作時的各種小信號特性，有利於抓住器件工作的本質特性，設計出符合要求的各類通用和特殊器件。 -
Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules
同時，本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究，包括： cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構；對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制，保證加工工件表面的精度和光順性；設計具有「前瞻」功能的自動升降速控制方法，保證加工過程的平穩性；通過脈沖均勻化，有效地解決加工過程中因為脈沖不均勻而引起的震動問題。 -
Performance of inflatable antenna reflector hinges critically on the precision of the membrane surface. if the error is not in the range of limit, it will heavily decrease antenna gain and increase sidelobe level
形面精度是決定充氣展開天線反射器性能的一個關鍵因素，如果誤差不在允許范圍內，那麼它會嚴重降低天線的增益，增加旁瓣電平。 -
This paper gives a time - synchronization technique bases on gps time service signal which is used in broad band seismic recorder 。 by world coordination time offered by gps - - utc ( usno ), adjust local clock base on gps signal, gain high nicety clock signal, clock precision reachs 10 - 6 。 this clock is the time source of broad band seismic recorder, bring the whole seismic recorder works in same time base. 1pps time base with high stability can be used as in - phase, spring, time and start - stop of every collection mode, while the scale under second make a precise time mark to receive data of broad band seismic recorder
針對接收機中gps信號的噪聲進行kalman濾波軟體處理， kalman濾波可以對gps信號與本地晶振時鐘的時差數據在大噪聲中進行平滑，在較短時間內估計出高精度的時差數據。系統消除了gps秒脈沖信號的ms級隨機誤差，把晶振秒脈沖的長期穩定度鎖定到gps信號的穩定度上;在gps信號失效時給出了可行措施，能夠保證在任何情況下產生一個穩定、高精度秒脈沖信號，誤差在1 s內。 -
Code density test, which is used to gain calibrated data, is recommended in the dissertation. the test result of the nonlinearity and precision of the hptimi is given
論文介紹一種為獲得校準數據而採用的碼密度測試方法，並給出了儀器非線性和精度測試結果。 -
The estimation by the formula is unbiased and with the least variance, many data processing show, the application of the method can gain higher precision of concrete strength value of the formula than in traditional method
大量試驗數據處理表明，利用本文公式推定混凝土強度值比傳統方法具有更高的精度。 -
Moreover, a strategy for imputation of null values based on changed precision model is put forward to improve anti - disturbing ability of model secondly, several primary algorithms are indrouced and discussed, the direction and target of discretization is analysised, to gain logical cuts, a method to discretize continuous attributes based on rough entropy is brought forward at last, the potential client datamining system in electronic commerce is put forward, all given algorithms is applied to the system, and compared by test results, and the new idea of this paper is simply described and some problems in this paper that need to improved on are proposed
然後，對目前流行的離散化演算法進行了詳細的分析和評價，指出了離散化的方向和目標，並提出了基於粗糙信息熵的離散化演算法，以便在保證劃分后決策表相容性的前提下，獲得比較合理的劃分點。最後，提出了電子商務的潛在客戶挖掘系統，並將前面提出的基於粗集的演算法理論應用到該系統中，同時和其他幾種現有的數據補齊和離散化演算法進行了實驗比較和結果分析。並指出本文創新之處以及存在的問題和努力的方向。 -
2. as for the intermediate frequency part in integrated circuits ( ic ' s ), we introduce feedback automatic gain control ( agc ) loop in view of its fargoing dynamic range and convenient precision adjustment, hence stable power of fore - demodulator signal and maximum systematic gain are ensured
2 、中頻部分採用集成電路的反饋式自動增益放大環路，動態控制范圍大，控制精度調節簡便，是系統增益的最大來源，同時也保證了中頻解調器前信號的功率穩定。 -
A important conclusion is verified from these analysis that although the azimuth resolution of sar radar is theoretically not connected with parameters such as radar range and center frequency, in fact, on the condition of same resolution, when the range becomes further and center frequency become lower, the requirement for the radar power gain production, signal processing and precision of ins will be higher, therefore the imaging will become more difficult
同時也證明了一個重要的結論：從理論上講，合成孔徑成像的方位解析度與作用距離、雷達工作頻率等參數無關，但實際上，在解析度保持不變的情況下，隨著作用距離的提高，工作頻率的下降，對雷達的功率孔徑積、信號處理以及慣導精度的要求會越來越高，從而成像也會變得越來越困難。 -
In order to win the war in the future and carry out the energetically defensive strategic principle, we must adopt effective measures and build the integrated defensive system to deal with cruise missile, which is seasoned with the fertility foundation, science and technology development level and economic strength of our country. so long as this, we can mop the floor with precision guidance cruise missile as the nucleus of the enemy ' s air attack, progressively try to gain the war ' s initiative and win the war finally
要在未來打贏這類現代戰爭，並貫徹積極防禦的戰略方針，必須採取有效措施，建立適應于國家生產力基礎、科技發展水平和經濟實力的反巡航導彈綜合防禦系統，徹底粉碎敵方以精確制導巡航導彈為核心的空中打擊，才有可能逐步掌握戰爭主動權，奪取戰爭的最後勝利。 -
The keys for laser crystal to grow in the same diameter are the diameter - measure system and control arithmetic, when crystal grow, the temperature is up to thousands of centigrade, and general diameter measure methods ca n ' t gain high precision, which will depress the total control effects
在激光晶體生長等徑控制過程中，有兩個關鍵環節：測徑數據採集系統和控制演算法。晶體生長是在數千度的高溫下進行的，採用常規的測徑方法，精度不高，這將對整個系統的控制性能產生影響。
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