查询词典 error condition

An improved UKF method is proposed and applied to the nonlinear initial alignment of SINS on the stationary base. Simulation results illustrate that the given method has a better performance in the estimation of the azimuth error than the EKF, traditional UKF and scaled SSUKF does. Based on the dynamic error equations of SINS, the mathematics model of the IMU/GPS integrated navigation system is derived for Kalman filtering.

此外，论文还分析和研究了捷联惯性导航系统的力学方程编排和惯性仪表的误差，建立了IMU/GPS组合导航系统的状态方程和量测方程，设计和开发了用于机载SAR运动补偿的组合导航实验系统，并对设计的组合系统进行了大量的静态实验和车载实验。

The observation equation built in this paper is nonlinear. After linea-rization, it can be seen that, the error of the angular sensor on ESG's outer gimbal axis is equal to the azimuth error of ESG, while that on ESG's inner gimbal is coupled from the elevation and the azimuth errors of ESG.

本论文所建立的量测方程是非线性的，其在标称状态的线性化方程表明：静电陀螺外框架轴上的角度传感器的输出误差等于陀螺主轴的方位角误差，内框架轴上的角度传感器的输出误差包括陀螺主轴的高度角误差和方位角误差的耦合量，其中方位角误差的耦合分量是由复示水平基准误差引起的。

Therefore, we can choose a little worse east and north gyros to cut down the cost of the navigation system.Thirdly, SINS/OD integrated system fails to diminish the error of azimuth angle, this paper introduces the regional positioning system based on Pseudo-Satellite as a member of the integrated system to diminish the error of azimuth angle in the moving state, and further improve the precision of positioning and orientation.

仿真结果表明，天向陀螺漂移和初始方位误差角对系统的定位精度影响较大；而东向和北向陀螺漂移对系统定位精度的影响较小，因此系统中就可以适当放宽对东向和北向陀螺精度的要求，这样就可以适当降低系统的成本。

To improve the quality of the image,the defocusing error was used to balance the piston error,spherical aberration and astigmatism...

运用离焦误差对p iston误差、球差和像散进行像差平衡，其效果显著，特别是球差引起的波面方差下降90%。

To improve the quality of the image, the defocusing error was used to balance the piston error, spherical aberration and astigmatism, and the results were significantly improved, especially the wave surface variance caused by spherical aberration was decreased by 90%.

运用离焦误差对piston误差、球差和像散进行像差平衡，其效？灾乇鹗乔虿钜鸬牟娣讲钕陆？0％。系统各项像差系数随子孔径数的增加而降低；当子孔径数大于6时，各像差系数变化缓慢。

In this paper, the relation between differential driven ratio accuracy and the common normal length error of cylindrical bevel wheel has been found by experimental method, which provides a efficient way for cylindrical bevel wheel manufacturer to control the common normal length error of the wheel.

通过实验研究，寻找出差动传动比的精度与斜齿圆柱齿轮的公法线长度误差的关系，从而为斜齿圆柱齿轮的加工提供一个可以控制斜齿圆柱齿轮公发线长度误差的有效方法

The features of involute gear profile are mapping analyzed, the principle and method of on machine measuring the longitudinal form error of bull gear s with the rack probe is introduced, the data evaluation model of longitudinal form error is established, and a measuring example is given.

对渐开线齿轮廓面特性进行了映射分析，介绍了齿条刃边测头在机测量大型齿轮齿向误差的基本原理及测量方案，建立了齿向误差的数据评定模型，并给出了测量实

The absolute error of the depth of geothermal reservoir is between 23 m and 50 m, and the relative error of interface of cap rock is less than 6.3%.

在对深部热水储层和盖层岩性界面进行地质解释后，得到热储层赋存深度的绝对误差为23-50 m，盖层岩性界面的相对误差小于6.3%。

The receiver clock error models and satellite clock error models are induced from the real data analysis.

此外，还讨论了由于GPS信号散射角、地球遮挡等产生的几何可见性问题。

A new adaptive clock error model was put forward in order to determine the GPS error state model in GPS/ INS tightly integrated system.

针对GPS/INS深组合系统中GPS接收机误差状态模型难以确定的问题，文中提出了一种自适应的时钟误差模型。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。