系统误差

In this paper, the MM5 Adjoint Assimilation System is used to correct MM5's terrain error. The experimental results of amending different initial terrain data indicate that: the MM5 AAS is able to retrieve the terrain field, whose resolution is matched with one of the initial meteorological element field and therefore well coordinated with the MM5 model. Thus a new way about how to widely use the assimilation system is offered in this paper.

将伴随模式同化系统应用于修正模式地形误差，通过对不同初始地形的修正试验表明，MM5伴随模式同化系统能很好地对地形误差进行修正，能够反演出与初始气象要素场分辨率相匹配、与模式更协调的地形场，为伴随模式同化系统的广泛应用提供了一种新的思路。

Allowable platform motion error allocation is an important part of system-wide allocation in SAR system. It is a necessary system design procedure to take into account error effects, error sources, and performance-limiting factors to determine more reasonable design.

摘要合成孔径雷达系统平台运动容差分配是系统要求分配的一个重要方面，它是系统设计中的必要步骤，通过考虑误差源、误差影响和性能极限等因素使得最终的设计方案更为合理。

This paper presents the design of the software and hardware of the microcomputer aided DGF5 Peak Inductive Transduser data collecting system,analyzes the important error sources,works out the method of using cubic spline function to modify the system error,and puts forward the relative software.

介绍了用IBM－PC系列微机与DGF－5型电感测微仪构成的数据采集系统的软硬件设计，对系统的主要误差源进行了分析，提出对系统的综合误差用三次样条函数拟合补偿的方法，并设计了相应的软件。

All kinds of errors that influence load sharing characteristics of gear system have been given, mainly including manufacturing and assembly error of each gear component's axis and each bearing's axis, tooth thickness error. The formulas of equivalent mesh error have been derived.

确定了影响行星齿轮传动系统均载特性的各类误差，主要包括：各个齿轮构件的中心轴线制造和安装误差、轴承中心轴线的制造和安装误差、行星架的制造误差、齿轮的齿厚偏差。

The estimation errors, including the finite difference approximation error, the instrumentation channel mismatch error, and the error caused by ambient noise, are studied systematically.

文中基于声信号的空间互谱分析，给出了声强向量阵的定向原理，并系统分析了其定向误差，包括有限差分误差、通道失配误差和环境噪声引起的误差。

These uncertainness comes from the external environment,the structure and parameters of systems.Self-adaptability of complex systems shows that when the environment of system was changed,system would make s...

当控制器及参数满足一定的条件时，通过构造误差系统的Lyapunov函数，得到误差系统的零解的全局渐进稳定性，从而使调控后的系统与原来系统的解达到同步。

The method made lead and lag errors boil down to GPS errors, which could be emendated by map data on the basis of the observability of GPS errors along the vertical direction. A general Kalman filtering was constructed to process the information of corrected GPS and DRS later, Which decreased lead and lag errors in the integrated navigation system.

该方法是将超前滞后误差归结力为GPS误差，先利用GPS沿道路垂直方向上误差的可现测性进行GPS误差校正，再得校正的GPS信息与DRS信息进行卡尔曼滤波，从而喊少组合导航系统超前滞后误差。

In order to evaluate aiming error of missile on the warship or on the submarine, including the error of warship position, the error of reference azimuth and the error of transfer measurement given by the navigation system, and try to divided them from the general error, it is highly important that we estimate and evaluate missile system of mobile bedding launching.

为了评估从舰船／潜艇上发射导弹的瞄准误差，包括舰船导航系统给定的船位误差、基准方位误差及其传递测量误差，并试图把它们从总的瞄准误差中分离出来，这对于动基座发射导弹武器的瞄准精度的评价极为重要。

The influence of its main design parameters on the floating displacement is analyzed.These provide theoretical background for the design of the basic floating parts of the star gear train.The floating displacement of center gears does not change with the power change of the train,and increases with the increase of the rotational speed of the train...

分析表明，中心轮的浮动位移量不随系统输入功率的变化而变化，随系统转速的增大而增大；中心轮的浮动位移量随系统星轮个数的增加而增大，随系统构件误差值的增大而增大，各构件的误差值对中心轮的浮动位移量的影响有累加作用；中心轮的浮动位移量随其齿轮的质量及转动惯量的增大而增加。

With simple and practical structure, the automatic seam tracking system was well designed and easy to operate.

本文详细分析了视觉伺服跟踪系统的误差来源，确定了不同误差对跟踪效果产生的影响，证明了本设计能够满足系统的误差要求。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。