Instead of using the homomorphic filter which is used to get rid of multiple noise and is a biased estimator, this algorithm translates speckle into locally stationary additive white noise.
该算法不同于有偏的去除乘性噪声的同态滤波算法，而是将噪声转化为局部平稳的加性白噪声。
The maximum entropy spectral estimation for phase modulated signals is shown to be a biased estimator: the frequency bias values of the maximum entropy spectral estimation for linear phase and linear frequency modulated signals are derived.
本文证明了相位调制信号的最大熵谱估计是有偏估计；推导了线性相位调制与线性频率调制信号的最大熵谱估计的频偏量；
Starting from the LS regression estimation, a new biased estimator of regression coefficients called ridge type generalized inverse regression estimator is generated combining the singular value decomposition expression of the design matrix and the ordinary ridge regression estimation methods.
从LS估计出发，基于设计阵的奇异值分解式，应用岭估计方法，构造了回归系数的一个新的有偏估计&岭型广义逆估计。
Applications of Biased Estimator in GPS Data Processing
有偏估计在GPS快速定位数据处理中的应用研究
Is it possible for an estimator to be biased in finite sample but consistent in large sample?
一个估计量是否有可能在有限样本中是有偏的但又具有一致性？
The M-estimator combined with the Huber function is used to con-struct the weighting forgetting factor as a reciprocal function of biased innovation at each time step.
在迭代的每一步，均利用M-估计器和Huber函数相结合构造作为更新偏差函数的遗忘因子。
In this paper, a new biased estimator-double k type ridge estimator (DKRE) is proposed to improve some existing biased estimators based on the peculiarity of ill-conditioning of the design matrix.
针对GPS快速定位中设计阵病态性的特点，文中对现有的有偏估计进行了改进，提出了一种新的有偏估计&双k型岭估计。
Both theoretical and computational results demonstrate that the PR estimator is a effective biased estimator for overcoming the effect of multicollinearity and is superior to the ordinary ridge estimator.
理论分析与计算结果表明，对于克服设计阵的复共线性对参数估计危害，部分岭估计是一种有针对性的有偏估计，它明显优于普通岭估计。
Selecting Weight Fitting Method for Baseline Solution with Systematical Errors Continuation Research on Using the Biased Estimator to Resolve GPS Double-Difference Base-line Model
利用系统误差延续性的基线解算选权拟合法GPS双差基线模型的有偏估计解法研究
Biased estimator based on diagnosis and measure of Multicollinearity
基于复共线性诊断和度量的有偏估计
In this paper, we define a new class of biased linear estimators of the vector of unknown parameters in the deficient_rank linear model based on the spectral decomposition expression of the best linear minimun bias estimator. Some important properties are discussed.
本文基于最优线性最小偏差估计的谱分解，定义了秩亏线性模型未知参数的一个新的线性有偏估计类，并讨论了它的许多重要性质。
And then some ellipses that AUGR estimator is better than the OLS estimator and AUGL estimator is better than the OLS estimator are given, respectively. Second, the definition of the almost unbiased unified biased estimator is proposed. This definition includes the familiar almost unbiased estimators in literatures, and it is the unified expression of the familiar almost unbiased estimators. Followed the biased and variance are compared of AUUB estimator and the unified biased estimator, respectively. AUUB estimator has smaller bias than UB estimator and the variance of AUUB estimator is between the variance of UB estimator and 4 times of the variance of UB estimator. Finally the properties of AUUB estimator are discussed. The conclusion is gained that there are parameters made AUUB estimator is better than OLS estimator in terms of their mean square error. The sufficient and necessary condition that AUUB estimator is admissible is given. The ellipse is given that AUUB estimator is
然后给出了几乎无偏统一有偏估计的定义，该定义包括了文献中常见的几乎无偏估计，实现了常见几乎无偏估计的统一表达式；接下来我们比较了几乎无偏统一有偏估计与统一有偏估计的偏度与方差，得出了几乎无偏统一有偏估计比统一有偏估计有较小的偏度，几乎无偏统一有偏估计的方差介于统一有偏估计的方差与统一有偏估计的方差的四倍之间的结论；最后我们对统一有偏估计的主要性质作了讨论，证明了存在参数K，S使得几乎无偏统一有偏估计在均方误差意义下优于最小二乘估计的结论，给出了几乎无偏统一有偏估计为可容许估计的充要条件，还给出了在均方误差阵意义下几乎无偏统一有偏估计优于最小二乘估计的椭球。
We give the approximation formulas of the variance of the sample ratio estimator for a population mean and its asymptotically non-biased estimator in multi-stage sampling.
讨论多阶段抽样比率估计及其样本量选择的问题，给出了比率估计抽样均方误差的近似公式及其渐近无偏估计的公式。