查询词典 attribute error

Because of the fatal differs between large-scale and mesoscale weather systems, such problems as relevant model of background error, representativeness of observation data and observation error structure still need to carry on deeper research.

鉴于中尺度和天气尺度天气系统之间的巨大差别，在中尺度资料三维变分同化时，背景误差相关模型的设置、观测误差结构和观测资料的代表性等方面还需要进行更加深入的研究。

Choosing output error of Accelerometers and angle error of attitude as observation respectively and system observation model is derived, which is based on analyzing Kalman filter theory. Simulation show that the results are true and validated.

本文对捷联惯导系统动基座初始对准进行了研究，对卡尔曼滤波技术在动基座初始对准中的研究与应用具有一定的参考意义。

Comparing with the observation results, the biggest average error of four observation well is 0.14 m in the simulation, the positive and negative error is relatively equal, and the stability of system is better, which means the simulation model accords with the reality of the studying region.

模拟结果与观测结果比较，4个观测孔的平均水位误差最大值为0.14m，正负误差比较均衡，系统稳定性较好，表明所构建的数学模型与研究区域实际情况吻合较好。

Study on application and simulation of Kalman filter technology in SINS Because Kalman filter some merits, such as provided a fast and accurate method for SINS, adopting it to do initial alignment in this paper. The Kalman filter theory is introduced and the dynamic error vector equation of the initial alignment is derived at the first. Using velocity error as exterior value of observation, maneuverable characteristic that is influenced with system's observability and its degree is studied at length by do amount of simulations and experiences.

首先介绍了卡尔曼滤波理论及相关技术，建立了系统卡尔曼滤波的状态方程和观测方程；首先采用速度误差作为观测值，详尽的研究了系统机动特性对可观测性和可观测度的影响，并做了大量仿真实验：通过对滤波原理的分析研究了影响的原因；分别选用加速度计输出误差和转台输出姿态角误差作为外部观测值，推导建立它们的观测模型，并通过仿真证明了分析结论的正确性。

To ensure consistency of the data between the two systems and reasonableness of their data, G-M tube detectors of the new system are calibrated and corrected to background, 20% system error was eliminated. After 18 months parallel operation and comparison, the relative error of monthly average reading is mostly less than 5%.

为了确保新旧监测系统数据的衔接与可比性，对新系统CP-110探测器进行了刻度校准和自身本底的补偿校正，纠正了约20%的系统误差；并对新旧系统进行了18个月的并列运行监测，其月均值的相对误差大多小于5%。

Methods The effects of the reading error and the misalignment of the probes on the accuracy of measuring and all the harmonics of roundness were analyzed; The strategy and the algorithm for optimizing the parameters of the measuring system were proposed; The distribution and propagation patterns of the measured errors for all the harmonics of roundness were studied in detail; A software for correcting the errors caused by the measurement error of the angle positions of the probes and the sensitivity difference between three probes was presented.

分析了测头读数及角位置误差对圆度各次谐波及圆周各点测量精度的影响；提出了三点法测量系统的优化策略与算法；研究了三点法测量误差的分布与传递规律；提出了克服测头定位误差以及3个测头的灵敏度不一致影响的软件校正方法。

For computation the truncation error of scheme and accumulation of truncation error are analyzed.

本文从截断误差和截断误差传播的角度分析了计算总误差，并提出了误差累积模式。

The truncation error of CSCD is derived and compared with some symmetric finite difference methods having the same order of accuracy,which shows that CSCD has the smallest coefficients in error terms.

从定性角度，得出同阶中心差分格式中，CSCD格式的截断误差系数最小的结论。

In order to reduce error of Nu number at large Ra number and thermal diffusivity, we analyze truncation error of corresponding heat-transfer equation and introduce an adjusting parameter in the equilibrium distribution function.

针对一二阶精度模型在Ra数极高或热传导系数极大时，Nu数的计算与经验值相比出现较大偏差，分析LBM对应宏观热传导方程的截断误差后，在平衡分布函数中引进一个调节因子。

Error-control coding technology is very important to reduce error probability and improve dependability in satellite communication.

在卫星通讯中，差错控制编码技术对降低误码率、提高通信的可靠性具有非常重要的作用。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。