估计误差

估计误差方差约束混合H2/H∞滤波

Mixed H_2 / H_ ∞ filtering with estimation error variance constraints

Hazard函数估计误差的极限定理

A Limit Theorem for Error of the Failure Rate Estimators

这种滤波器能够在具有初始状态估计误差的情况下渐近诊断出具有n个测量输出的m个（可增加至n个）同时发生的故障。

This filter can asymptotically detect m ( can be increased to n ) faults that occur simultaneously with the initial state estimations error .

信道估计误差与延迟对自适应Turbo编码调制的误码率性能影响

Effect of channel estimation error and delay on BER performance of adaptive Turbo coded modulation

通常，较小的基线估计误差将会导致获取的DEM中存在较大的斜坡效应。

Usually , the minor errors of baseline estimation induced a major slope in the derived DEMs .

一种基于天线阵列预处理盲多用户检测算法及其对DOA估计误差的鲁棒性研究

A Pre-processing Blind Multiuser Detection Algorithm for Antenna Array System and Its Robustness to DOA Estimation Error

运用仿真得到峰度系数和最佳门限之间的关系，并用TOA估计误差比较了几种不同的门限选择方法。

The performance of several different algorithms are compared in terms of TOA estimation error .

空时编码调制中信道估计误差的Cramer-Rao界

Cramer-Rao bound for channel estimation errors in space-time coding and modulation

Gerrard模型的抽样估计误差较Iwao模型为小。

Sampling estimating error of Gerrard 's model is less than that of Iwao 's.

同时引入H∞跟踪性能指标，给出了观测器的设计过程，得到了估计误差的上界，并且该估计误差的上界与所设计的待定参数无关。

By introducing the H_ ∞ tracking performance , a design procedure is derived and the upper boundary of the estimation error is inferred , too , which is irrelevant from the parameter to be designed .

为选取一种估计误差小的方法作为本文研究姿态估计的方法，本文通过对比实验，选用LEA作为本文姿态估计的研究方法。

In order to choose a method with low estimate error as view estimate method in this paper .

载体的不规则运动造成的多普勒中心与调频率的估计误差是合成孔径声纳（syntheticaperturesonar，SAS）成像质量下降的主要原因。

In synthetic aperture sonar ( SAS ) imaging the estimation errors of Doppler center and Doppler rate due to the non-idealistic platform motions are the primary reason for degradation of image quality .

作为特殊情形，还提出了定常系统的稳态最优信息融合Kalman估值器，其中用解Lyapunov方程计算局部估计误差协方差。

As a special case , the steady-state optimal information fusion Kalman estimators are presented for the time-invariant systems , where the local estimation error covariances are computed by solving the Lyapunov equations .

但是，OFDM不仅对于同步误差和信道估计误差非常敏感，而且还伴随发射信号高峰平比（PAPR）的缺点。

However , OFDM is sensitive to synchronization error and channel estimation error and it has the weakness of the high Peak-to-Average Power Ratio ( PAPR ) of the transmitted signal .

应用子空间扰动分析研究了宽带CSS法的统计性能，得出了宽带CSS法方位估计误差随信噪比变化的关系。

By using subspace disturbing analysis to investigate the statistical performance of the CSS , the relationship between the DOA estimation error and the signal to noise ratio ( SNR ) was presented .

研究表明，随着合成孔径长度和信噪比的增加，ML估计误差可以很快地收敛于CRB，但存在阈值效应。

It is demonstrated that ML estimating error can converge to CRB quickly with increasing synthetic aperture length and Signal to Noise Ratio ( SNR ), but a threshold effect exists .

二维虚拟ESPRIT算法对子阵列内部结构要求低，但在低信噪比环境下，其估计误差较大。

2D virtual ESPRIT algorithm has a low requirement for inner structures of subarrays . But in low SNR situations , its estimating error will be reduced .

同时，通过消除频域导频时域序列的自相关误差，能有效降低由DFT谱泄漏导致的信道估计误差。

At the same time , the channel estimation error , caused by the spectral leakage of DFT , can be reduced by canceling the auto-correlation error of the time-domain sequence of frequency-domain pilots .

该方案取消了系统中M（q）已知及逼近误差平方可积的条件，并通过引入鲁棒自适应补偿项来消除建模误差和参数估计误差的影响。

The approach does not require the M ( q ) to be known and the optimal approximation error to be square-integrable . The robust adaptive compensation term is adopted to minify the influence of modeling errors and parameter estimation errors .

但是，这种算法已在理论上被证明了不能达到最小的估计误差，即Cramer-Rao下界。

However , it has been proved that these methods can not achieve the least identification error ( i.e. the Cramer-Rao bound ) .

DVB-T系统性能受信道估计误差的影响很大，信道估计的性能将直接影响着接收机性能的优劣。

The performance of DVB-T system is greatly affected by the accuracy of channel estimation . The performance of channel estimation will directly affect the receiver performance .

由于低复杂度Rake接收机引入的估计误差较少，在低信噪比条件下其均衡性能甚至会优于高复杂度的Rake接收机。

Moreover , the channel equalization performance of Rake receiver with lower complexity outperforms that with higher complexity in low SNR since less estimation error is introduced into Rake receiver with small number of taps .

提出了计算瑞利信道下存在信道估计误差时M-QAM的误比特率的解析表达式。

Following is an analytical expression to calculate the BER of M-QAM under Rayleigh channel when channel estimation error exists .

与线性PLS及机理模型的计算结果相比，PLS-NN模型的估计误差最小（比例大约为1∶1.7∶2.8）。

Compared with the linear PLS model and the first principle model , the PLS-NN model gives the smallest estimation error for slab temperatures .

一种是基于最小线性误差的PIC算法，该算法先通过最小线性误差方法估计误差，然后通过并行方式统一将各个载波的频率影响消除。

One is a PIC algorithm based on minimum linear error . It estimates error using the minimum linear error method , and then eliminates the influence of the all carrier frequencies in a parallel way .

仿真结果表明，该跨层设计在系统信噪比较低时能显著改善系统性能。最后，对存在信道估计误差时MIMO系统中的自适应资源分配问题进行了研究。

Simulation results show that the proposed cross-layer design significantly improves the system performance in the condition of lower signal to noise ratio . Finally , the adaptive resource allocation problem for the MIMO systems in the presence of channel estimation error is analyzed .

它采用空间自由损耗加平坦Rayleigh衰落的信道模型，综合分析了信道估计误差、用户移动性、请求重传等因素对整体性能的影响。

Based on a channel model which free space lose and flat Rayleigh fading are con - sidered , the capacity model can be used to analyze the affection of different factors such as channel estimation error , user mobility and retransmission on system performance .

扩展卡尔曼滤波（EKF）是从极小化状态估计误差的方差得到的，没有考虑状态误差的变化率，因而对非线性时变系统EKF估计方法惯性作用较大，从而产生估计滞后。

Extended Kalman Filtering ( EKF ) was derived from minimizing variance of state estimation error . Not considering its rate of change , EKF method has large inertia for nonlinear time-varing systems and resulted in estimation lag .

与基于EKF的定位算法相比，本文提出的算法滤波性能更好，对初始估计误差不敏感，并且算法不用计算雅可比或黑赛矩阵，更容易实现。

By comparison with the algorithm based on EKF , this algorithm has better performance than that of the algorithm based on EKF , also it is more insensitive to initial estimation error and is easy to implement .

本文的分析将为实际应用中CQT算法参数的选取、寻找音阶频率估计误差的修正方法等提供重要参考依据。

Analysis of this paper can provide an important reference for deciding the parameter values of CQT and for finding an approach of compensating estimation errors .