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statistical fitting
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  统计拟合
     The relationships between exhaust temperature and its influencing factors,especially the EGR rate,are analyzed and a new algorithm for estimating exhaust temperature is worked out by means of the combination of modeling and statistical fitting.
     对电控发动机排气温度与其影响因素之间的关系进行了深入分析,采用模型与统计拟合相结合的方法构建了一种新的排气温度估计算法。 该算法综合考虑了多个影响因素,并着重对EGR率的影响规律进行了分析。
短句来源
     Two Dimention Statistical Fitting of Multiplicity
     多重数的二维统计拟合
短句来源
     The Statistical Fitting for Unknown Sensors Gain and Phase
     系统幅相误差的统计拟合
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     Evaluation on the Factors in Statistical Fitting of Intensity in Seismic Moderate Area
     中强地震区地震烈度统计拟合因素评估
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     The adhesive characteristics of tires in cornering with braking are the bottlenecks in the research of entire car performance. So on the basis of the tire mechanical models founded by predecessors and numerous experimental data, a tire mechanical model set up by using statistical fitting methods.
     由于轮胎在转弯制动工况下的附着特性是研究整车性能的关键所在,所以,本文首先在前人所建立的轮胎力学模型的基础上,根据大量的轮胎试验数据,运用统计拟合方法建立了轮胎转弯制动附着特性力学模型。
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  “statistical fitting”译为未确定词的双语例句
     Effects of the airplane postures on antenna pattern are modified. Analysis results of constant γ models,exponent model and four probability distributions are compared with data. It shows that γ model with index n and Weibull distribution,K distribution agree with the measured data and their statistical fitting parameters are also given.
     修正了载机姿态变化对杂波测量的影响 ,比较了常数γ模型、n次模型和指数模型以及四种概率分布对杂波数据的分析结果 ,表明n次幂γ模型和Weibull分布及K分布与测量数据较为一致 ,并给出了相应的模型统计参数
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  相似匹配句对
     The Statistical Analysis In the Fitting of Curves
     曲线拟合中的统计分析
短句来源
     Two Dimention Statistical Fitting of Multiplicity
     多重数的二维统计拟合
短句来源
     Statistical Simulation
     统计模拟
短句来源
     Statistical Terms
     统计名词术语
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     On the Rule of Fitting
     论拟合法则
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  statistical fitting
A simple formula is obtained using the method of statistical fitting for calculating the back scattering coefficient of rain media in millimeter (mm) wave band.
      
Applications to topics in community evolution, species packing and the statistical fitting of species abundance data are mentioned.
      
Then all vertebral measurements were standardized relative to each other, and means and standard deviations were calculated using a statistical fitting procedure derived from volume and medial area.
      
We discuss statistical fitting of the model elements in Section 7.
      
Thus, we transform the problem of pattern classification to one of statistical fitting of a probabilistic model.
      
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There exist abundant multi_metal grains in over 5 000 m deep sea floor.In order to exploit the deep_sea floor mineral,we have taken some deep_sea floor pictures for study.Fig 1 shows a typical picture.There are dark metal grains pixels (the target objects),and grayer sands pixels (the background objects).Point light source is necessarily used when we take pictures for it is very dark in deep_sea floor.However,it causes serious non_uniform illumination in these pictures,which enlarges errors when measuring grain's...

There exist abundant multi_metal grains in over 5 000 m deep sea floor.In order to exploit the deep_sea floor mineral,we have taken some deep_sea floor pictures for study.Fig 1 shows a typical picture.There are dark metal grains pixels (the target objects),and grayer sands pixels (the background objects).Point light source is necessarily used when we take pictures for it is very dark in deep_sea floor.However,it causes serious non_uniform illumination in these pictures,which enlarges errors when measuring grain's radius and calculating mental conservation. [FK(W27。40ZQ] Three simple methods are developed in this paper for removing the non_uniform exposure effects.(1) Local enhacement and filtering.By setting appropriate parameters in the filter,we can force the brightness and contrastness of pixels in a local window into appointed target mean grey and contrast value.As a result,the brightness and contrastness will be improved in insufficient exposure area,partly reducing non_illumination effects.(2)Substracting the source image from the background image,which merely consist of sands pixels by extracting the local maximum grey value.It is not easy to decide the local window size to make it appropriate for not only being large enough to contain at least one pixel of metal grain and one pixel of sands but also being small enough to make the intensity of the point light source distributed approximately equivalent inside this local window.Generally,it changes with the size and density of metal grains in digital image.After image substracting,most of the effects of non_uniform illumination have been removed from the deep_sea floor pictures.(3)Statistical fitting grey distribution and stretching.First we calculate the local maximum and minimum grey value all over the image using the above second method,then fit two planar cubic equations with these statistical data,and then based on the fitted data all over the image,stretch the gray value pixel by pixel. Theoretically,the third method integrates the advantages of the second one,and can completely remove the effects of non_illumination from the image.For analyzing and comparing the transformation of grey value before and after each processing step,we give the trendlines of grey value of pixels in line 263,which reflects the one_dimentional grey and contrastness distribution characteristic in these pictures.From the trendlines,we can draw a conclution that the last approach is more effective than the other two in removing point light source exposure effect from deep_sea floor pictures.In a word,though we do not make use of the ideal model of point light source in the whole experiment,we have also solved the problems.The approaches employed here demonstrate the effectiveness and practical significance.

点光源照射的亮度不均匀使获得的海底视像图像的灰度分布极不均匀 ,给海底多金属结核矿物的颗粒自动识别、粒径测量、储量的计算带来误差。本文针对点光源照射的多金属结核海底视像图像 ,提出了 3种方法进行灰度不均匀校正 ,并作了比较。实验结果表明 ,统计原图灰度值的二维分布特性 ,用二阶三次多项式函数拟合此灰度分布 ,再逐像元进行灰度位伸的方法能更有效地消除点光源对海底视像图像灰度的影响。

Based on the active absolute calibration of airborne radar,clutter characteristics of typical terrain (plain,hill,mountain and compound terrain) are measured at L band HH polarization.Effects of the airplane postures on antenna pattern are modified.Analysis results of constant γ models,exponent model and four probability distributions are compared with data.It shows that γ model with index n and Weibull distribution,K distribution agree with the measured data and their statistical fitting parameters...

Based on the active absolute calibration of airborne radar,clutter characteristics of typical terrain (plain,hill,mountain and compound terrain) are measured at L band HH polarization.Effects of the airplane postures on antenna pattern are modified.Analysis results of constant γ models,exponent model and four probability distributions are compared with data.It shows that γ model with index n and Weibull distribution,K distribution agree with the measured data and their statistical fitting parameters are also given.

本文利用经地面有源绝对校准的机载杂波雷达 ,对平原、丘陵和山区等典型地形地物进行了L波段HH极化雷达杂波特性测量 .修正了载机姿态变化对杂波测量的影响 ,比较了常数γ模型、n次模型和指数模型以及四种概率分布对杂波数据的分析结果 ,表明n次幂γ模型和Weibull分布及K分布与测量数据较为一致 ,并给出了相应的模型统计参数

On the basis of the tire experimental results, using statistical fitting methods in this paper set up a tire mechanical model. The model could be used in the simulating calculation of vehicle in cornering with braking.The fitting result was at the approach to the practical situation and the calculation of the model was simple. It provided an efficient way when modeling difficult with theory utilized the modeling of the data statistics.

通过对轮胎试验结果的分析,用统计拟合方法建立了一种适用于转弯制动联合工况仿真的轮胎力学模型。所建模型与实际情况接近,计算简便,在用理论分析建模困难时,而采用试验数据进行统计建模不失为一种有效的途径。

 
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