观测误差

But, in the real canal operation, the canal water surface will fluctuate because of outside disturbance, and there is measurement error in measuring water level. Whether or not the estimated state can substitute for the real state will results in the design issues of optimal observer.

问题是在实际的渠道运行中，渠道水体会由于受到外部因素的干扰而产生水面波动，水位测量仪器也存在观测误差，那么估计的水流状态能否替代真实的水流状态。

The geometry strategy of POD using carrier phase epoch-wise differency and P code is studied by the simulated data in order to achieve the decimeter accuracy level. The accessment method of POD results is also discussed. The contributions of this paper are as follows. Firstly, with the analysis of the CHAMP data, the space environment of LEOs and its influence is discussed.

本文主要工作如下：首先，结合CHAMP卫星实例数据，分析了低轨卫星所处的空间环境对GPS信号的影响，研究了6PS卫星星座和LEO卫星星座的摄动运动问题和星载GPS观测误差模型问题，建立了低轨卫星GPS测量信号仿真平台。

Based on them, the concept of finite-time observer for the uncertain linear discrete system with state feedback and output was introduced.

对具有状态反馈和输出的线性不确定离散系统引入有限时间观测器的概念，可以保证在给定的有限时间区间内，观测误差小于一个给定的界，并给出了最优有限时间观测器的具体设计方案。

The objective is to design an observer such that estimation error can be completely decoupled from the unknown input.

目标是设计适当的观测器，使得观测误差与作用在系统中的未知输入解耦。

The results show that the estimated root mean square of observation error for each observation type is reasonable.

结果显示估计的观测误差均方差是比较合理的。

Besides, the influence of stochastic observation error on the evaluation result is investigated using Monte Carlo method.

最后运用蒙特卡罗法构造算例，讨论了实测过程中的随机观测误差对评价结果的影响。

The method considers influence of definition,focus and external condition,and takes effective measures to eliminate the error of observation which is less than 2‰.

该方法考虑了分辨率、焦距以及外界环境条件的影响，采用有效的方法进行消除，观测误差小于2‰。

The change of observation error was analyzed in the case of stator flux observer ui model at high speed and in model at low speed when the parameters of motor changed based on the mathematical model in the stationary coordinates.

利用静止坐标系下的异步电机数学模型，分析当电机参数改变时，高速运行状态下定子磁链观测器 u i 模型和低速运行状态下 i n 模型的观测误差变化情况，然后给出定子磁链全阶观测器增益矩阵的确定方法。

Emulation analysis makes clear as a result, as a result of compensatory Kaerman filter wave algorithm considered the impact of relevant observation error integratedly, accordingly, when flowing epoch number is more than 500 when, flowing precision of filter wave algorithm wants compensatory Kaerman the flowing algorithm of excel tradition.

仿真分析结果表明，由于补充卡尔曼滤波算法综合考虑了相关观测误差的影响，因此，当平滑历元数大于500时，补充卡尔曼滤波算法平滑精度要优于传统的平滑算法。

The present algorithm has a good property of global convergence.

考虑观测误差的影响，对方法的计算精度进行了检验，该方法是全局收敛的。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。