测量误差

In order to ensure the precision and reliability, this paper designs the GPS/Loran C/SINS/AHRS integrated system. In this integrated system, the self-adaptive federated Kalman filter is introduced to revise strap-down inertial navigation system; the heading angle attitude and heading reference system is used to ensure the convergence of heading angle; and the coordination transformation for Loran C is applied to eliminate the constant error of Loran C.

针对导航精度及可靠性，设计了GPS/罗兰C/SINS/AHRS组合导航系统，该组合导航采用了自适应联邦卡尔曼滤波的方法，通过闭环形式校正SINS，并用姿态航向参考系统代替捷联惯性导航系统输出的航向角以保证航向角的收敛，同时对罗兰C的测量值进行坐标变换以消除由于坐标系不同而带来的常值误差。

This dissertation addresses a practical data processing method of free-form surface for the coordinate measuring machine, including fitting algorithm, probe radius compensation and surface matching .

以坐标变换理论和最优化算法为基础，提出了应用单纯形法，对原始测量点进行坐标平移和旋转变换，将理论坐标与实际坐标统一起来，在此基础上进行误差处理，从而较好的解决了曲面匹配问题。

The model of line photogrammetry is the coplanarity condition among the projection center, a space line and its corresponding image line.

直线摄影测量的基本原理是摄站中心、空间直线及其对应的像片直线段间必须满足共面条件，每个像片直线观测值可列两个按条件平差的误差方程式。

Control network with the control of the situation, limiting the role of cumulative error, is the basis and foundation survey.

控制网具有控制全局、限制误差累积的作用，是各项测量工作的基础和依据。

This paper discussed several methods of the evaluation on total cumulative pitch error of gear: diagram, tabulation, coordinate conversion.

齿距累积误差是影响齿轮传动准确性的重要检测项目之一，利用计算机方便、快捷地处理测量数据在工程中具有实际意义。

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。

Another important research work is the software design. We use the least square method in the software to demarcate the systematic error.

此外通过设计并使用了基于最小二乘法理论的软件标定程序，我们对系统误差进行了矫正，提高了系统的测量精度和准确性。

The error of dielectric loss angle calculated by this way is reduced more than 18% than the former one.

仿真结果表明，该方法计算介质损耗角时的误差，较单独使用相关系数法时减少18%以上，克服了谐波及直流分量的影响，提高了相关系数法测量介质损耗角的精度。

Finally, accurate measurements close to a zero input differential voltage are still not achieved because V OL limitations will cause errors at small sense voltages.

最后，精确的测量接近零输入差分电压仍然没有实现因为V 职等限制，将导致在检测电压误差小。

This effectively translates the output voltage measurements by 1.5V, so a zero input differential voltage will output 1.5V ±V OS -induced errors.

这有效地转换了1.5V的输出电压测量，所以零输入差分电压输出1.5V的±的 V OS引起的误差。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。