均方根误差

对模式向前12h预报场而言，同化了卫星反演湿度场后，均方根误差值下降了1.4～9.0，下降比率达到17%～59%，同化后的湿度场与实际大气大大接近。

As for the 12-h forecasts of RH , the reduction of RMSE when assimilating GMS-5 RH is between 1.4 and 9.0 , which is a reduction of 17 % to 59 % . It is shown that the analyzed fields approach further to the actual atmospheric moisture fields .

选择最优参数的过程即是对以均方根误差最小为目标的整数规划问题的求解过程。

The process of which is to solve the integer programming problem with the objective function that RMSE is minimal .

利用遗传算法来避免BP算法的局部极小点，从而达到均方根误差全局最小点，也解决了BP算法的收敛慢的问题；

This algorithm could avoid the local minimum point , and achieve the minimum point of RMS error so as to solve the problem of slow restraint .

不通风状况下，利用CFD方法得到的气温模拟值与实测值之间的平均相对误差和均方根误差分别为4.47%和1.34℃，模拟结果与实测结果吻合良好。

The mean relative errors and the root mean square error between simulated values and measured values of air temperature were 4.47 % and 1.34 ℃ under non-ventilation conditions .

基于亚像素细分质心算法，针对各噪声的分布特点及规律，分别推导出各自的均方根误差，综合各项误差得到CCD噪声的星点定位精度模型。

Then based on the subpixel centroid arithmetic , RMS error of different noises was deduced respectively according to respective different noises distribution regular . At last , CCD centroid position accuracy model was received by synthesis .

实验部分通过选择特定波段分析了污染空气中CH4，CO，N2O和CO2的浓度，拟合残差的均方根误差小于1%。

Measuring result of some gases such as CH4 , CO , N2O and CO2 in polluted air was presented in the experiment part and the RMS of the residuals was < 1 % .

利用独立的检验样本对估测结果进行评价，均方根误差（RMSE）为16.526m3/hm2，与实际情况基本相符。

Using the independent checking samples , the results were evaluated , and the root mean square error ( RMSE ) was 16.526 m3 / hm2 .

在参数优化条件下，杉木密度预测模型的相关系数R值为0.93，预测均方根误差RMSEP值为：0.017。

Under optimized conditions , the correlation coefficient ( R ) for prediction models of density was 0.93 . The root mean square error of prediction ( RMSEP ) for the established models was 0.017 .

当压电陶瓷驱动位移大于半波长时，均方根误差为5nm。

The accuracy is 5 nm when the displacement drived by PZT exceeds a half wavelength of the light .

在此基础上，以TMG计算的温度结果作为结构分析的载荷，依据热弹性理论运用I-DEAS并结合正交试验法进行试验计算，找到影响星载天线均方根误差的主要因素。

And based on the computed result , we found the main factor that influence on antenna surface accuracy by the theory of thermal distortion and test and compute using software I-DEAS and orthogonal test .

仿真结果表明，该算法的均方根误差和圆概率误差等性能均优于SITAN（桑地亚惯性地形辅助导航）算法。

Its simulations are made which show that the precisions of autonomous navigation using this method are improved compare to that of Sandia Inertial Terrain Aided Navigation ( SITAN ) .

杉木密度、微纤丝角预测模型的相关系数R值分别为0.81、0.87，预测均方根误差RMSEP分别为：0.03、0.04。

The correlation coefficients ( R ) for prediction models of density , microfibril angle of Chinese fir were 0.81 , 0.87 , respectively . The root mean square errors of prediction ( RMSEP ) for the established models were 0.03 , 0.04 , respectively .

对噪声背景中插值FFT方法估计正弦信号频率的精度进行了研究，导出了不加窗和加Hanning窗时频率估计均方根误差与信噪比及FFT长度的关系式；

The accuracy of the frequency estimation technique of sinusoid based on the interpolated FFT is investigated . Formulas for evaluating the root-mean-square ( RMS ) error of frequency estimation for different signal-to-noise ratio and different FFT length without weighting window and with Harming window are derived .

经检验，对于非独立和独立样本，预报的均方根误差分别在12个月和10个月预报时效内小于SSTA的均方差，相对误差在5个月预报时效内都小于50%。

Prediction results of independent and dependent samples show that the RMS errors of SSTA predicted in 10 ~ 12 months ahead are smaller than SSTA mean square deviation and that the relative errors in 5 months ahead are less than 50 % .

模式7天预报500hPa高度场与分析场的对比检验表明，新方案的距平相关系数和均方根误差都较原方案有明显的改进。

Compared with the standard initialization scheme , the anomaly correlation coefficients and RMS of 500 hPa geopotential height simulated under the new scheme have improved significantly .

与非自适应的插值小波以及常用的Haar小波相比，这种自适应的提升格式降低了均方根误差（RMSE）和单点误差（LPE）。

The adaptive lifting scheme performs better than the interpolating wavelet and Haar wavelet , and can reduce the root mean square error ( RMSE ) and local point error ( LPE ) without the redundant storing space of the sign .

继而在分支界定算法引入空间几何一致性约束，高效快速将距离均方根误差dRMS最小化从而求得碎片的最佳匹配。

Then by introducing spatial geometric consistency constraints into branch and bound algorithm , the best fragment matching pairs are acquired through the fast and efficiently minimization of distance root mean squared error ( dRMS ) .

φ200mm轻型石英反射镜经两次高温200℃，低温－40℃实验及两年时效研究，用ZYGOMarkⅣ干涉仪测量均方根误差及变化。

After two times of ageing of 200 ℃ high temperature and - 40 ℃ low temperature for two years , the RMS error of the φ 200mm lightweight quartz mirror has been tested by ZYGO Mark ⅳ interferometer .

对于样本外的预测，我们分别使用平均绝对误差（MAE）和均方根误差（RMSE）进行度量比较，结果表明：我们使用四个因子所建立的预测模型是合理、有效的。

For the out-sample forecasting , we use the mean absolute error ( MAE ) and root mean square error ( RMSE ) to measure and compare , the results show that : the prediction model we use established by the four factors is reasonable and effective .

根据均方根误差RMSE标准分析了模拟值与测量值的误差，结果分析表明，建立的温室小气候动态模型能可靠地估计温室内空气的温湿度值。

Through simulation and analyse of the error between the simulated value and the measured value according to the root mean squares error ( RMSE ) standard , it was shown that the dynamic model can provide reliable estimates of both temperature and humidity in the greenhouse .

由于模型全面地考虑了城市布局、街道走向、植被覆盖率等多种因素，CTTC和STTC数学解析模型的计算结果与空气温度实测值的均方根误差小于1℃。

The root mean square deviation between the model calculation result and measured value of air temperature is less than 1 ℃, because different factors such as urban layout , street runs and vegetative coverage are fully taken into account .

并采用均方根误差对该方法进行了客观评价。

The method 's performance is evaluated by using Error of mean square root .

波振器的磁场峰值的均方根误差小于0.53%。

The rms error of the peak field is less than 0 . 53 % .

此方法在本次实验的干度范围内测量值均方根误差为7%。

The RMS of two phase flow quality is 7 % in the given ranges .

该方法可制作出面形均方根误差小于3%的微透镜阵列。

Micro-lens array with surface shape error less than 3 % can be manufactured with this method .

通过对计算机模拟漫射体产生离面倾斜的时变散斑图，计算其均方根误差值，进行了验证。

The out-of-plane tilting speckle interferogram is computer-simulated and the RMS phase error is calculated to verify reliability .

实测结果表明，火箭姿态角测量的均方根误差约为0.7°。

The measured result shows that the rms error of the measurements is about 0 . 7 ° .

高精度旋转抛物反射面型面均方根误差要求很严，复合材料反射面成型时须考虑模具材料的热变形。

When a composite reflector is molded , the heat distortion of the mould material should be taken into consideration .

证明双曲线拟合的射线路径均方根误差远远大于其他几种速度模型拟合的射线路径的误差。

Demonstrated that the mean-square-root errors of hyperbolic-fitted ray paths are much greater than that fitted by other several velocity model .

应用理论分析和蒙特卡洛仿真方法，对标准卡尔曼滤波算法和简化的滤波算法进行了比较，并给出了均方根误差的统计值。

The theoretical analysis and Monte Carlo simulation methods are used to compare the traditional fusion algorithm with the new one .