查询词典 observation error

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。

GPS surveying based on GPS reference station network can improve the reliability and veracity, eliminate and weaken the infection of atmosphere error and orbit error which is relative to time and space in the observation of GPS surveying, which makes the rapid static pointing and RTK dynamic pointing of medium and long distance into reality, and has virtues of acquirable WGS84 coordinate directly.

采用基于GPS基准网的GPS测量可以提高GPS测量的可靠性和准确性，可以消除和减小GPS测量观测值中与时间和空间相关的大气误差和轨道误差的影响，使中、长距离快速静态定位和RTK动态定位成为现实，还具有可直接得到WGS84Z坐标等优点。

The observation equation built in this paper is nonlinear. After linea-rization, it can be seen that, the error of the angular sensor on ESG's outer gimbal axis is equal to the azimuth error of ESG, while that on ESG's inner gimbal is coupled from the elevation and the azimuth errors of ESG.

本论文所建立的量测方程是非线性的，其在标称状态的线性化方程表明：静电陀螺外框架轴上的角度传感器的输出误差等于陀螺主轴的方位角误差，内框架轴上的角度传感器的输出误差包括陀螺主轴的高度角误差和方位角误差的耦合量，其中方位角误差的耦合分量是由复示水平基准误差引起的。

The result is evaluated using mean absolute error, maximum absolute error and minimum absolute error.

所选用的精度指标包括：绝对值平均误差、绝对值最大误差以及绝对值最小误差三种。

The dependent variables were absolute error, variable error, and error detection capability.

依变项为动作准确性、稳定度和错误侦察能力。

Through compared with the difference of the sampling inspection's OC curves between existent and nonexistent inspection error by utilizing grouping method, we get the conclusion that all the traditional methods are designed on the premise that there is none inspection error exist, so it would terribly depress the probability of acceptance and couldn't veritably reflect the quality of the lot for inspection, if the inspection error is exist when sampling inspecting.

同时通过对集团检验错误存在与否的抽样检验特征曲线的比较，指出：以往的集团抽样检验方案设计，都是在假设无检验误差前提下设计的，在抽样检验中，若存在检验错误，会严重影响抽样检验的接收概率，使抽样检验结果不能客观地反映检验批的质量。

And the temperature error could be divided into accidental error and systematic error.

其温度误差分为随机误差和系统误差两部分。

Sampling error or allowable error is conventionally accepted between 1% and 10%; however, it is suggested that sampling error should be carefully assessed in light of the nature of the derivation of the population proportion and other aspects of the initial data.

抽样误差或允许误差是接受常规的1 ％和10 ％，但是，有人建议，抽样误差应当认真评估根据的性质推导的人口比例和其他方面的初步数据。

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。

After the analytic model is set up and the error rate is derived, the system error performances of uncoded and Turbo coded DPIM are simulated and analyzed under weak turbulence channel, and the system error performances under Gaussian channel are simulated for comparison.

在建立分析模型和推导差错率的基础上，在弱湍流信道条件下仿真分析了Turbo码编码前后的系统差错性能，同时与高斯信道条件下的系统差错性能进行了比较。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。