方差法

结论优度法（GM）的平衡能力最强，建议取代目前广为应用的极差法和方差法。

Conclusion Goodness method ( GM ) is encouraged to put into practice to replace popular range method and variance method .

采用Allan方差法分离了光纤陀螺的各主要随机误差源，精确确定了各项误差系数的大小。

Allan variance method is used to separate the main random error source and to determine the error coefficient accurately .

Allan方差法在光纤陀螺随机噪声分析中的应用

Application of Allan variance methods in analyzing fiber optic gyro random noise

Allan方差法是对光学陀螺随机误差频率稳定性进行分析的一种通用方法。

Allan variance is a useful tool for analyzing the frequency stability of optic gyro random errors .

OTSU法（最大类间方差法）被认为是阈值自动选取方法的最优方法之一。

The OTSU algorithm ( Maximization of interclass variance ) is one of the superior threshold selection methods .

采用Allan方差法对IFOG的测试数据进行了分析，辨识出了各项随机误差系数。

The test data of IFOG are analyzed with Allan variance method and each error coefficient is identified .

基于最大类间方差法（Otsu法）提出了一种三维分割算法，该方法适于B超序列图像的区域分割，并取得了良好的分割结果。

Based on the Otsu method , a modified algorithm for 3D ultrasonic image segmentation is proposed and the experiment results are satisfactory .

介绍了国外常用于评估环形激光陀螺和其它精密测量仪器性能的Allan方差法。

The method of Allan variance is often used to characterize the performance of ring laser gyro and other precision testing instruments abroad are introduced .

在圆阵上应用Capon最小方差法、MUSIC方法和Mini-Norm方法进行高分辨方位估计，同时研究波束域高分辨方法在圆阵上的应用。

In high resolution methods , MUSIC and Mini-Norm are used in UCA DOA finding , and beam-space methods are studied based on UCA .

针对图像背景噪声强的特点，提出了一种基于感兴趣区域（ROI）的结构光条纹中心处理方法，即在ROI内用最大类间方差法进行阈值分割再用重心法进行细化。

Aim at removing the background noise in the large measuring range system ( about2m ), a method which combines Otsu based on ROI and gray barycenter method is proposed .

采用最大类间方差法进行光带区域的提取，运用Zhang并行快速细化算法对光带进行细化。（2）足背点云盲区的曲线拟合修复。

OTSU algorithm is used to extract the light band area and Zhang fast parallel thinning algorithm is used to thin the light band . ( 2 ) The repair of blind data in human heel zone by curve fitting .

对阈值选取采用迭代阈值、最大类间方差法、二维最大熵求取阈值三种方法，并对其进行了比较，同时运用数学形态学算法对MRI序列图像进行分割。

On the threshold selection , we compared iterative threshold , the largest category of variance and two-dimensional maximum entropy to seek the best threshold . At the same time we used mathematical morphology algorithm to handle the sequence of the MRI images .

首先介绍了两种传统的DOA估计算法&延迟-相加法和Capon最小方差法，通过仿真验证了他们的性能。

First , here introduces two kinds of traditional DOA estimation algorithm & Delay-sum method and Capon minimum variance method , through the simulation checks out their performance .

作者在阅读大量文献的基础上，针对绝缘子图像的特点，将最大类间方差法（简称Otsu）和遗传算法相结合应用到绝缘子图像的分割中。

Through reading a large number of literatures , the combination of Otsu method and genetic algorithm is used for insulator image segmentation considering the characteristics of power-line image .

用于对地跟踪的C-IMM地图调整方差法

C-IMM map-tuned variance method for ground target tracking

网络流量自相似分析有聚集方差法、R/S分析法、周期图法和Whittle法。

Self-similarity analysis of network traffic ( SSANT ) includes aggregated variance , R / S analysis , periodic diagram and whittle methods .

本文用X射线衍射峰形方差法测定了掺杂β-C2S的晶粒尺寸和微观应力，用测定结合水量法测定了掺杂β-C2S的水化速度。

In this paper the size of doped β - C_3S crystals and the micro-stress have been determined by peak-figure-variance analysis of XRD , and the rate of hydration has been measured according to the quantity of combined water .

论文采用Allan方差法对半球谐振陀螺的信号进行随机误差分析，分析结果表明，半球谐振陀螺的角度随机游走误差是陀螺随机误差的主要部分。

The Allan Variance ( AV ) analysis method is used to evaluate the HRG signal . The result indicates that the main random error of HRG is Angle Random Walk ( ARW ) .

将扩展地图调整方差法与C-IMM结合起来，提出固定结构C-IMM扩展地图调整方差法，从而将多模型思想引入对地跟踪系统。

We present " C-IMM extended map-tuned variance method " to combine C-IMM and extended map-tuned variance method .

用Allan方差法对一组激光陀螺实测零漂信号的不同方法滤波效果分析结果表明，该滤波法能在不影响滤波效果的前提下较大幅度减少计算量。

The results for a set of zero drift signal of the laser gyro by various filtering methods using Allan variance showed that this method could shorten the computation time remarkably without influence on denoising .

对于5种主要的噪声源，运用IEEE公认的在时域上对频域稳定性进行分析的方法&Allan方差法，进行了特性分析，并给出了误差系数的计算公式。

For 5 main noises , the Allan variance method , which is the method to analyse the frequency domain stability on time domain acknowledged by IEEE , is used to make a characteristic analysis , and the formulas to calculate error coefficients are given .

针对光纤陀螺的随机误差，从原理上分析了IEEE标准中的Allan方差法和军标中的模型拟合法、归一化计算方法等测定方法，比较了二者测定的精度和工程上的可用性。

For FOG random error , the principle of Allan variance method in IEEE std , model fitting method and normalization calculation method in National Military std are analysed . Compare the measurement precision and the degree of usability for actual project .

设计了基于激光陀螺漂移数据时间序列模型的卡尔曼滤波器，对激光陀螺漂移数据进行了滤波，并采用Allan方差法分析了滤波结果；

The kalman filter is designed based on the time sequence model of drift data of laser gyro and used to filter the drift data of laser gyro . The method of Allan variance is used to analyze the results of filtering .

理论分析和仿真表明，基于多模型的C-IMM扩展地图调整方差法对于目标在道路交叉点时，或者目标在道路上匀速运动时，跟踪性能有所改进。

Simulations show that : the performance of target tracking is improved by using C-IMM extend map-tuned variance method when target is on road or junction .

研究了图像分割的理论和技术，在分析电子按键图像的直方图特性的基础上，利用最大类间方差法即Ostu算法，对电子按键图像阈值化处理。

The theory and technology of image segmentation are studied . On analyzing the histogram of the electronic button , this dissertation uses image segmentation based on maximum between-cluster variance algorithm .

最大类间方差法（Ostu法）因其计算简单、自适应强，而成为使用最为广泛的图像阈值自动选取方法之一。

Because of simple computation and well adaptation , the Method of Maximum Classes Square Error ( Method of Ostu ) becomes one of the most popular method of thresholding selection .

文章利用Allan方差法对Sagnac敏感环分别为20m和200m的再入式无源光纤陀螺（RE-FOG）的随机误差进行了详细的分析。

By using Allan variance method , the stochastic errors of two re entrant passive fiber gyros ( RF FOG ), which are with 20 m and 200 m Sagnac sensing ring ( SSR ) respectively , are analyzed in detail .

针对模糊互补判断矩阵，提出了方案排序的强保序性概念，并给出了在采用最小方差法（LVM）排序方法时，互补判断矩阵导入1个或1组新元素后的强保序性条件。

With regard to fuzzy complementary judgement matrix , the conception of strong preservation for ranking the alternatives is proposed . The conditions of strong rank preservation for adding one or a group new elements when using the least variance priority method , are given .

运用适合于高粒子浓度的最小方差法（MQD）图像处理算法得到了截面内典型环核流动颗粒速度矢量场。

By the Minimum Quadric Difference ( MQD ) cross-correlation algorithm suitable for high density of particles , the particle velocity vector fields with time were obtained .

笔者用其中4种新策略，即新组内离差平方和法、新组内方差法、新组内平均距离法和加权平均距离法，对德国西北部Hopsten干草地进行了分类。

Four of them , sum of squares of new cluster , variance of new cluster , average distance of new cluster and weighted average distance were applied to the classification of dry grasslands in Hopsten , Germany .