In this paper, a new method of phase errors estimation based on higher order statistics is proposed for SAR imagery autofocus.
提出了一种基于高阶统计量分析的相位误差估计算法,用于SAR图像自聚焦。
In this paper, a parameterization method of the site errors estimation in lightning locating system (LLS), using the data of multi-direction finders (DFs), has been developed.
本文提出一种根据多站雷电定位资料确定闪电定位系统(LLS)场地误差的方法。
The aim of parameter errors identification is to find the wrong parameter, the goal of parameter errors estimation is to provide a correct estimation value for the wrong parameter.
参数错误辨识的目的是找出错误的参数,参数错误估计的目标则是给错误的参数提供一个正确的估计值。
Such regions can indicate not only the extent of likely estimation errors but can also reveal whether the estimate for one quantity is too large then the other is also likely to be too large.
这些区域不止能指出可能的估计错误,而且能告诉我们这个估计值对于这个数量是不是太大,从而得知其他也有可能会太大。
Visualize the distribution of Credit Losses and the VaR without incurring into model or estimation errors.
将信贷损失和风险价值的分布形象化,而无需使用模型或产生估计错误。
The continuous wave radar is the main tracking equipment for trajectory observing at present. Estimation and calibration of system errors have important significance.
连续波雷达是目前外火箭轨道测量的主要高精度设备,用数学方法估计和修正其系统误差有特别重要的意义。
The accuracy of the rotor speed estimation in speed sensorless vector control system of induction motor under load is sensitive to parameter errors of the internal machine model.
在感应电动机无速传感器矢量控制系统中,在负载条件下转子速度估计的精确度对电机内部模型参数误差非常敏感。
Two integral inequalities with a parameter whose estimation of errors is best were given under certain conditions.
在一定的条件下给出了两个含参数的积分不等式,其误差估计是最佳的。
The problems of uncertainty estimation are analyzed in detail when measurement results of form errors are evaluated with the methods of least-square and minimum zone.
详细分析了用最小二乘法和最小包容区域法评定形状误差测量结果时的不确定度估计问题。
Due to the sensitivity of inversion operator, minute errors in the estimation can incur considerable equalization performance degradation.
由于求逆算子的敏感性,估计结果中小的误差也可能造成均衡器性能的显著损失。
In this thesis, the methods for DOA estimation in the presence of array errors and nonuniform noise are discussed.
本文就阵列存在误差及非均匀噪声情况下的DOA估计方法进行了讨论。
The proposed method can been applied to an array of arbitrary geometry and is robust to the estimation errors of the source directions.
另外,该方法可以适用于任意的阵列结构,并且对期望信号和相干信号方向估计误差具有很强的稳健性。
The results show that homogeneity of samples, correct determine of control range of reading errors and correct estimation of bacterium account are elements that affect accuracy of aerobic plate count.
通过多个实验表明,试样的均衡性、读数误差控制范围的正确确定以及样本菌量的正确估计,都是影响实验室菌落计数精密度控制的因素。
This article reviews recent works on the effects of inspection errors involving mainly acceptance sampling and group screening with brief mention of related estimation and grading.
本文介绍了最近的关于检查错误影响的工作,重点是接受抽样和群筛选,也简介了有关的估计和分等问题。
Amplitude gain and phase error would lead to performance degradation of high-resolution parameter estimation algorithms; especially the phase errors will cause deviation of parameter estimation.
幅度增益和相位误差使得高分辨率的参数估计算法的性能下降,特别是相位的误差,将会引起参数估计的偏离。
When frequency sweeping method being used properly for measuring amplitude-frequency characteristics, the analysis and estimation of errors in measurement results could be avoided.
正确使用扫频法测量幅频特性,可以避免大量测量结果中误差的分析与估算。
The thesis gives out the estimation methods based on the above errors and introduces the specific processes of using ADSP to realize the CFO and synchronization estimation.
本文就上述误差给出了估计方法,并介绍了在工程中使用DSP来实现频偏估计和同步的具体实现过程。
Errors of estimation, usually innocent but sometimes not, can be huge.
估计错误可以非常大,通常是无恶意的,但有时却不是。
It was proven theoretically that the estimate errors of unbiased regression estimation are less than that of general regression estimation.
提出了无偏回归估计方法,从理论上证明了该法比常规的估计法具有更小的平均估计误差。
The result shows that, compared with the existing channel estimation algorithms for OFDM system under time-vary multipath channel, the proposed algorithm can effectively reduce estimation errors.
分析结果表明,与已有的OFDM系统在时变多径信道中的信道估计技术相比,所建议的算法可以有效地减小信道估计的误差。
Finally, we give the estimation of errors of the method.
最后给出此方法的误差估计。
This paper considers the estimation in the linear regression model under the criterion of minimizing the sum of absolute errors.
本文考虑在绝对误差和最小准则下的线性回归模型估计。
The total number of estimation errors from data fusion will be decreased when layers of virtual sensors are increased.
虚拟传感器的层数增加时,融合后总的估计误差将减少。
In order to compute the optimal weighting matrices, the formula of computing the cross-covariance matrix between local estimation errors is presented.
为了计算最优加权阵,提出了局部估计误差互协方差阵的计算公式。
The formulas of computing the variance and cross-covariance matrices among local state estimation errors are presented, which are applied to compute the optimal weights.
为了计算最优加权,提出了状态估计误差方差阵和互协方差阵的计算公式。
Hypothetical example shows that neglecting the silt-layer may results in significant parameter errors and parameter estimation discrepancy between the amplitude attenuation and the time lag methods.
最后,用一个假设的例子说明以往在用波幅衰减法和时滞法进行参数估计时,忽略淤泥层的存在可能会导致估计偏差。
By simulation test, it shows that robust estimation, which is applied to parameter estimation, can resist gross errors.
通过使用模拟数据进一步验证了稳健估计用于参数估计中良好的抗差作用。
In the free flight segment, effects on the state error propagation caused by prior state estimation errors and orbit determination errors of the chasing spacecraft were studied.
在自由飞行段,分析了追踪航天器估计状态误差的先验值和测轨误差对状态误差传播的影响。
In the free flight segment, effects on the state error propagation caused by prior state estimation errors and orbit determination errors of the chasing spacecraft were studied.
在自由飞行段,分析了追踪航天器估计状态误差的先验值和测轨误差对状态误差传播的影响。
应用推荐