系统偏差

具有未知系统偏差的自适应Kalman平滑器

Adaptive Kalman smoother with unknown system bias

锆石SHRIMP年龄测定数据处理时系统偏差的避免&标准锆石分段校正的必要性

Avoidance of Systematic Bias of SHRIMP Zircon U-Pb Dating : Necessity of Staged Calibrations

反馈控制器采用PID控制规律并与模糊前馈控制相协调，对系统偏差进一步控制。

Feedback controller using PID make a further control on the system deviation together with feed-forward control .

当系统偏差较小时，单神经元PID控制器和模糊控制器同时起作用。

When system is approaching to the steady state , fuzzy controller and single neuron controller are combined to overcome the defect of the fuzzy control .

新的透射比浊检测体系中，测定IgM的系统偏差得到纠正，但IgA的预期偏差明显增大。

In new detection system , the systematic error of IgM was rectified , but the outcome bias of IgA increased .

评述了GPS技术目前存在的问题，包括与SLR测量之间存在的系统偏差、GPS技术本身可能存在的周年变化和GPS卫星天线相位中心的变化。

The main problems in GPS technology including the system bias to SLR , its own annual variety and the change of GPS satellite antenna phase center are also discussed .

所作的数值试验说明，在特定情况下，用平均P，B，T轴推断构造应力主轴方向时有可能出现系统偏差。

A numerical test shows that , in some special case , there may appear a systematic deviation between the directions of the mean P , B and T axes and that of real principal stress axes in the crust .

基于通用的线性最小方差最优加权融合估计算法，分别获得了分布式最优加权融合Kalman状态滤波器和系统偏差滤波器。

Based on the optimal weighted fusion estimation algorithms in the linear minimum variance sense , the distributed optimal fusion Kalman state filter and system bias filter are obtained , respectively .

当测距系统偏差为10米时，Halo卫星的定轨精度在百米之内。

When the ranging system bias is within 10 meters , the determination accuracy of Halo satellite orbit is within 100 meters . 6 .

控制器采用两层线性结构的神经网络，输入为系统偏差及其一阶、二阶微分，因此具有增量型PID控制结构。

The controller is a neural network with two-layer linear structure . The input of the controller is the system deviation , one and two ladder differential , so it has a mechanism similar to the PID controller with incremental form .

就此本文首先提出了PID参数的模糊自整定并对控制器进行了设计，控制器根据系统偏差和偏差的变化率，通过一定的模糊推理来自行调整PID参数。

Aiming this problem , the fuzzy self-tuned model of PID parameters is brought forward and corresponding controller is designed . The controller adjusts the PID parameters through certain fuzzy reasoning autonomously according to the system deviation and rate of change of deviation .

T/P观测和比容模型得到的全球MSL变化的位相差是一系统偏差。

The phase difference in global MSL variations between TOPEX / Poseidon observation and steric model prediction implies a systematic difference between them .

该算法是利用各雷达相对主雷达的测量差值，利用强跟踪滤波器（STF）实时估计出各雷达的系统偏差（方位和距离），从而进行配准。

With the measure difference between sensors and the master sensor , the algorithm use STF to estimate the real-time system biases of each sensor for registration .

针对LFM脉冲测距时由于距离-多普勒耦合而产生的系统偏差，采用修正测量方程的扩展卡尔曼算法，解决了非线性跟踪滤波问题，并利用MonteCarlo仿真实验验证了算法的有效性。

Aiming at the systematic bias in ranging with LFM waveforms caused by range-Doppler coupling , the nonlinear filtering problem is solved by using EKF algorithm with modified measurement equation . Monte Carlo simulation verifies the efficiency of the algorithm .

首先，采用具有RBF核函数的LS-SVM离线建立系统偏差模型，并在系统运行时不断对偏差模型进行在线修正；然后基于此模型在DMC预测控制的基础之上构建补偿器；

The nonlinear deviation model is built by LS-SVM with the Radial Basis Function ( RBF ) kernel , which can be revised on line , and the compensator is built based on this model and DMC predicted control .

信息交易者严格按CAPM行事，不会出现系统偏差；噪声交易者则不按CAPM行事，会犯各种认知偏差错误。

Informed traders to act strictly in accordance with CAPM that there is no systematic bias ; noise traders are not acting in accordance with CAPM will be guilty of a variety of cognitive bias error .

引入方位速度构成外转台复合控制提高随动精度，以全数字PID控制提高外转台的跟踪性能，采用先进的CPLD技术提高随动系统偏差输入量的精度。

Through introducing azimuth speed to form the compound control of outer turret for improving tracking accuracy , the tracking performance of the outer turret is improved by all-digital PID and the accuracy of the deviation input for the slave tracking system is improved by CPLD techniques .

使用该会社提供的铂、Al2O3标准样品在50～1200°C进行测试，通过对测试数据的比较分析，发现正确选用计算公式和参照标样可有效地降低测量结果的系统偏差。

Through the measurement of Pt and Al 2O 3 standard samples provided by this corporation in 50 ~ 1200 ° C and subsequent date analysis , it was found that the system deviation of the measurement results can be effectively decreased by using proper calculation formula and reference samples .

该算法是通过无偏转换把其它雷达的测量转换到主雷达下，利用各雷达相对主雷达的测量差值，采用Kalman滤波器实时估计出各雷达的系统偏差（方位和距离），从而进行配准。

The measurements of other radars are transferred to that of the primary radar through unbiased transformation in the algorithm . With the measuring differences between the radars and the primary radar , the Kalman filter is used to estimate the real-time system bias of the each radar for registration .

轨道外推15天，LMO卫星的定轨精度变化不大，均保持在米级，Halo卫星的定轨精度受测距系统偏差的影响较大。

Track extrapolation 15 days , the orbit determination accuracy of LMO satellite changes little , remaining in the meter-scale , and the orbit determination of Halo Satellite has great influences by the ranging system bias .

实证表明估计出的CIR模型可以用于上交所债券的定价，但用于利率期限结构变化的预测会产生一定的系统偏差。

It is concluded that the estimated CIR model can be used to price bonds in the SSE , but it will cause some error when it is used to predict the change of yield curves .

TNF可以得到比EKF算法更好的精度，原因在于TNF利用数值积分方法直接计算某些量的精确数值结果，而不是采用线性近似，这就避免了由于线性近似引起的系统偏差。

TNF can get higher accuracy than EKF and other modified KFs , because it can use numerical methods to get exact numerical results of a state vector , instead of doing a linear approximation as EKF does , it can avoid the system error caused by the linear approximations .

仿真结果表明，系统偏差较大时MGLSE算法优于GLSE算法和其他传统的配准算法，并具有配准效果自动检验功能，防止配准后系统偏差反而增大。

Simulation results also show that the MGLSE algorithm can examine the registration effect automatically to avoid the deterioration of the system errors after registration .

使用Chapman-Kirk方法以及多项式拟合手段，对靶场试验中所得的BEL测速雷达数据进行处理，得到飞行过程中弹体的阻力系数，将其与风洞实验数据对比，分析飞行过程中系统偏差。

BEL velocity-measuring radar data obtained in range test is processed using Chapman-Kirk method and polynomial fitting and the rocket drag coefficient in flight is obtained . And then comparing it with wind tunnel data , systematic deviation in flight is analyzed .

某数值偏离参考值的一种系统偏差。

A systematic deviation of a value from a reference value .

利用少量地面重力数据估计航空重力数据的系统偏差

The estimation of systematic deviation by using small land gravity data

基于双卡尔曼滤波的系统偏差消除方法

Method of systematic error elimination based on double Kalman filters

在重建中采取了纠偏措施，有效地解决了资料存在的系统偏差问题。

System deviations are modified successfully by means of the rectification measures .

测距系统偏差越小，定轨结果越好。

The orbit results are better when ranging system bias is smaller .

关于地震烈度衰减模型的系统偏差

On the systematic deviation of seismic intensity attenuation models