bias error 中文意思是什麼
bias error
解釋
偏離誤差-
Heckman, j. j. ( 1979 ), sample selection bias as a specification error, econometrica, 47, 153 - 161
樣本選擇偏差，一看就知道是個很重要的問題嘛，排名第五，不算虧待。 -
The error torques include mass unbalances, compliances, bias torque, etc.
誤差力矩包括質量不平衡，柔性，偏置力短，等等。 -
A simulation model using the 0 - 1 distribution as the bias probability distribution for both error detection and correction is put forward. the problem of optimum bias probability is solved in theoretical respect. the simulation efficiency at optimum bias probability is derived
本文提出了一個同時糾檢錯系統的模擬模型，並採用二項分佈作為偏詈概率分佈，從理論上解決了最佳偏詈概率分佈問題，導出了最佳模擬效率的解析公式。 -
But the most common noise is angle random walk, bias instability, rate random walk, rate ramp and quantization noise. in this paper, the random error model including the most common five noise as above
對常見的五種噪聲因素包括角度隨機遊走、零偏穩定性、速率隨機遊走、速率斜坡和量化噪聲建立了陀螺隨機誤差模型。 -
3 ) < wp = 12 > using perturbation analysis, the space - correlation loss and the bearing - estimated error for finite - bandwidth incoherently distributed sources are evaluated analytically, respectively. it is disclosed that bandwidth - induced bearing bias increases monotonously with the signal ' s relative bandwidth. when the relative bandwidth is not small enough to be negligible, the spatially - only processing cannot lead to accurate bearing estimate, that is, the joint space and time processing is necessary for high - precision bearing estimation
3 ）利用擾動分析方法，解析評價了有限帶寬引起的非相干分佈源的空間損耗及其對波達方向估計的影響；分析表明，帶寬擾動引起的方向估計偏差隨信號相對帶寬單調增加；當相對帶寬無法忽略時，為了得到高精度的波達方向估計，需要進行聯合空時處理。 -
A batch least - squares maximum likelihood estimator is employed to calibrate the model coefficients of accelerometer and a polynomial post - fit method is used to establish temperature models of these coefficients. the temperature models of accelerometer bias and scale factor of accelerometer are established between - 20oc and 50 oc. after compensating the temperature error by using these models, the post - fit residuals of the accelerometer output have been improved to 10 ? 5 g, and the trend term of accelerometer changing with temperature basically vanished
採用最小二乘極大似然估計和多項式擬合的方法，分析加速度計靜態模型系數隨加速度計殼體溫度變化的規律，建立了- 20oc 50oc之間加速度計零偏和標度因數誤差的溫度模型，應用該模型對加速度計溫度干擾進行補償，補償后，加速度計輸出的擬合均方根誤差一到二個數量級，並且基本上消除了加速度計輸出隨溫度變化的趨勢項，使得加速度計測量精度得到了明顯提高。 -
It is widely recognized that one practical and important problem in dynamic climate modelling is the systematic tendency of a model to approach its own climate i. e. systematic error or bias usually occurs
因此在做短期氣候預報時，一般做法是把模式氣候從模式計算出來的未經處理的預測減去，得出距平，這做法可以盡量去掉系統性誤差。 -
And then, based on the above theories, the circuit design and simulation means have been concretely applied in the internal modules of voltage reference, bias circuit, oscillator, error amplifier and drive circuit of the chip and so on. the relevant design indexes are successfully achieved. at last, the whole circuit simulation and layout design are completed
在此理論基礎上對該電源晶元內部的各個模塊，如電壓基準源、偏置電路、振蕩器、誤差放大電路和驅動電路等模塊進行了具體的電路設計和分析模擬，且達到了相應地設計指標，最後，完成了整體電路模擬和版圖設計。 -
Subcircuit models are designed and simulated, which includes bias current source, voltage reference, error amplifier, pwm comparator, driver circuit, protection circuits for over - temperature, over - current. at last, combined with periphery component, the circuit is simulated, and the result meets the anticipant requirement
並對集成電路內的各個模塊包括電流偏置電路、基準電壓電路、誤差放大電路、三角波振蕩發生電路、 pwm比較電路、驅動電路、過熱保護電路和過流保護等進行了具體的設計和模擬，並對整體應用電路進行了模擬，結果均達到了預先設定的指標。 -
The system was simulated in four kinds of conditions. the effect of gyro drift and accelerometer bias on the evaluation error of misalignment angles and attitude error was analyzed
並且分四種情況對系統進行了模擬，分析了加速計零偏和陀螺漂移對失準角估計誤差和姿態誤差的影響。 -
This advantage is shown that in awgn and multipath channel, its estimation mean bias and estimation error square root is smaller than the sc method
這種優點體現在awgn和多徑通道中自適應分段相關時間同步法的估計均值偏差和錯誤方差均小於sc方法。 -
Methods to estimate bias error, dispersion and first round hit probability for artillery system are shown. ( 2 ) error - sources of position survey preparation, target position decision, ballistic preparation, meteorology preparation, models, technical preparation and the rest for deliberate preparation as well as their effects on initial firing data errors are discussed in details
（ 2 ）較詳細地討論了精密法決定射擊開始諸元中，測地準備、決定目標位置、彈道準備、氣象準備、模型、技術準備、其它未測定或未修正誤差等誤差源等及其對射擊開始諸元的影響。 -
Secondly, we present a new transmit diversity scheme with adaptive power allocation in which two antennas are employed at the transmitter, and the effect of the channel estimation error on its performance is also analyzed. theoretical analysis and simulation results indicate that the new scheme has a considerable performance gain and is robust to the estimate bias of channel fading parameters
其次，提出了在雙天線發送分集中對不同天線的發送功率進行優化分配的技術方案，並分析了通道估計誤差對其性能的影響，理論分析和模擬結果表明：在alamouti雙天線發送分集中採用自適應優化功率分配，不僅提高了系統的性能，還可以提高其對通道估計誤差的魯棒性。 -
The paper analyzes in detail the mechanics and optics theory. in the light of the characteristic of the intensity modulation optical fiber sensor, the reference - way is presented to compensate the error signals which are caused by the bias light, dark current of photoelectric detector, temperature drift of pre - amplifier
文中詳細分析了這種傳感器的力學和光學工作原理，並且針對所選用的強度調制型光纖傳感器的工作特點，提出採用參考通道補償由於背景光、光電探測器的暗電流、前置放大器溫漂等因素引起的誤差。 -
And then the stability and the stable error response of the dpll are analyzed. there is an obvious doppler shift frequency offset in the received signal with flight at a high speed, in the dissertation the uniform sampling second - order dpll is used to remove the frequency bias for its excellent high - pass characteristic of the error transfer function
由於高速飛行的遙測目標在接收信號中會出現較大的多普勒頻率分量，而典型均勻采樣二階數字鎖相環dpll （ digitalphase - lockedloop ）的誤差函數具有高通特性，所以本文提出一種利用其高通特性來去除多普勒頻率分量的新方法。 -
For the regression estimation when the auxiliary variate is correlated with the disturbance, the bias and mean square error ( mse ) of the regression estimator are obtained, and the estimator of the mse is presented
摘要討論了輔助變量與擾動項相關條件下的回歸估計，給出了在這種條件下回歸估計量的偏差和均方誤差以及均方誤差的估計。 -
A conclusion of dispersions along with firing range and the relation between bias error and dispersion are analyzed
分析了密集度隨射程的變化規律及準確度與密集度的關系。 -
The process of ship form evaluate alternatives is a multiple criteria and multiple objectives one, which is mainly based on the designers " subjective experience in the past. the bias error is inevitable because the result mainly depends on the designers " subjectivity
船型方案論證是一個多準則、多目標的決策過程，過去主要靠設計者的經驗來完成，船舶工程系統設計基本上還是一種經驗設計，這使得最終的決策結果難免帶有由於決策者的主觀臆斷性而可能造成的系統誤差。 -
Methods to calculate effect of bias error and dispersion on first - round hitting probability and on multi - round hit probability are discussed. according to calculating results, influence on first - round hitting probability by accuracy of each factor, by the firing range, by the change of meteorology condition with space - time, and by dispersion are analyzed, so are influence on multi - round hitting probability by bias error & dispersion
討論了射擊開始諸元精度與密集度對首發命中概率與多發命中概率影響的計算方法，並根據計算結果討論了決定射擊開始諸元的各因素精度、射程的變化、氣象條件隨時間與空間的變化對首發命中概率的影響，密集度的變化對首發命中概率的影響，及射擊開始諸元精度與密集度對多發命中概率的影響。 -
The back - propagation neural network is self - defined. the optimized weights and bias obtained by ga are used as initial weights and bias of the back - propagation ( bp ) neural network. then, the neural network is trained by the variable study rate momentum of bp algorithm, the error goal is achieved by massive experiments
自定義了bp神經網路，將遺傳演算法優化好的初始權值和閾值作為bp網路的權值和閾值，採用學習率可變的動量bp演算法對神經網路進行了訓練，達到了誤差目標要求，從而實現了bp演算法修正網路權重的目的。
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