误差估计

In this text, we discuss the method of estimating parameter that the density of explains variable of having measurement error is not abridge, we inquire the covariance of y and e^ and we can get a formula as follows

本文要探讨的是在不限制有测量误差的解释变数的分布下估计参数的方法，首先探讨Y跟e^的共变异数关系，可以得到如下式子

The sixth chapter will discuss the initial alignment of the Marine SINS theoretically. First, the error characters of initial alignment will be analysed, then, a new two-position alignment method together with the realization of the estimation of the gyroscopes' random constant drifts will be presented.

第四部分从理论上着重讨论了舰载捷联式惯导系统的初始对准问题，对初始对准的误差特性进行了较深入的分析，提出了可在初始对准的同时完成对陀螺仪随机常值漂移估计的双位置对准方法，并对该方法进行了理论分析，可行性分析和仿真计算分析。

The author briefly introduces the channel estimation methods and decision criterions of both SISO-OFDM system and MIMO-OFDM system, and gets the compared figures about performance of mean square error and bit error ratio.

作者简要介绍了传统SISO-OFDM系统和MIMO-OFDM系统信道估计的方法和判决准则，并给出了这些算法之间的均方误差和比特误码率的性能比较曲线。

Secondly, to reduce the error cumulating effect of LAG-BA, another bit-allocation algorithm was derived from the least square support vector machine, where the coding information of several similar frames was taken into account. The proposed algorithm is denoted least square support vector machine bit allocation, which further depresses the video quality fluctuation.

针对LAG-BA的误差累积效应，根据最小二乘支持向量机的原理，进一步提出了一个考虑到多个相关图像编码信息的目标比特估计算法，并用LAG-BA和LSSVM-BA取代MPEG-4 Q2方案中的比特分配算法设计了两个改进的MPEG-4 Q2方案。

For the problem that the extended Kalman filter is difficult to design and prone to diverge, the unscented Kalman filter algorithm based method is presented to solve the problems of the filter design and convergence. The error from the low-cost inertial gyro and accelerometer is compensated to achieve optimal attitude estimation. The filtered model is applied to the two-wheeled self-balanced robot system.

针对扩展卡尔曼滤波器设计困难并且容易发散的问题，提出基于采样卡尔曼滤波的方法解决滤波器设计及收敛问题，并补偿低成本的惯性传感器陀螺仪和加速度计的误差，从而得到机器人姿态的最优估计。

According to Iacoviello and Minetti (2003), this article uses Taiwan data for 1995 first season to 2004 fourth season to check wheter Taiwanese housing market has the credit channel. This article establishes four groups of VAR model. Model (1) including overnight interest rate, GDP, the consumer price index, the house price index, the total bank loans, the bank housing loan. The model (2) replaces bank loan and housing loan; for spread. The model (3) uses Mix to replace the Spread. The model (4) including GDP, the consumer price index, the house price index and uses Mix to replaces overnight interest rate.

摘要 本文用台湾地区1995第一季至2004第四季共40笔季资，验证台湾房屋贷款市场是否存在信用管道，本文首先以ADF单根检定法检定各项变是否为定态数列资料，其次将非定态变数取差分值之后进行VAR模型分析，最后经由估计后VAR模型之参数进行冲击反应分析与预测误差变异数分解，藉以了解当变遇到外冲击时对於台湾房屋贷款市场的影响。

In order to reduce the effects of the force model errors on the coordinate solution, an extended Kalman filter has been proposed with short-arcs consisting of only a few consecutive passes of satellite over the tracking station.

为尽量减小力学模型不精确在站坐标解中带入的误差，本文采用推广Kalman滤波归算仅由单站二次卫星接续通过的测距资料以估计测站坐标的方法。

In order to compute the optimal weights, the formulas of computing the local estimation error covariances are presented.

为了计算最优加权，提出了计算局部估计误差协方差公式。

The results show that as long as the difference between the initial temperature and the measured target temperature is within ±200 ℃, the calculated values of the true temperature and the spectral emissivities are in good agreement with that of the measured targets.

实验结果表明：只要温度估计初值与真实情况的误差在士200℃以内，即可得到较好的计算温度值和计算发射率值，测量不确定度在2％以内。

The midcourse guidance we used can reduce the amount of computation and the sensitivity of estimation error, be implemented easily and guide missile effectively.

我们所使用的中途导引方法能节省运算量且容易实现并降低对估计误差的敏感度，有效地导引飞弹。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。