1) hybrid difference method
低阶差分
1.
In the light of defects of the high order difference and low order difference,a new type of hybrid difference method is put forward in this paper.
本文主要研究了高阶差分和低阶差分的不足，从而提出了一种新型的混合差分法，这种方法比高低阶差分都优
2) FLOC
[英][flɔk] [美][flɑk]
分数低阶协方差
1.
α-Spectrum Estimation for AR SαS Processes Based on FLOC;
基于分数低阶协方差的AR SαS模型α谱估计
2.
For the impulse noise, the time-delay can be estimated by computing the FLOC(Fractional Low-Order Covariance).
由于脉冲噪声服从低阶分布,采用分数低阶协方差方法,可以得到较好的时延估计精度及良好抗噪声能力和抗混响能力,比较适合室内的语音源定位。
3.
The drawback of the parameter estimation method for ARMA SαS process based on fractional lower order moments(FLOM) was analyzed,and based on the conception of fractional lower order covariance(FLOC),a new parameter estimation method of ARMA SαS process was proposed based on FLOC coefficient.
分析了基于分数低阶矩(FLOM)估计ARMA SαS模型参数的不足,根据分数低阶协方差(FLOC)的概念,提出了一种基于分数低阶协方差系数估计ARMA SαS模型参数的方法。
3) fractional lower order covariance
分数低阶协方差
1.
Direction finding of signal subspace fitting algorithm based on reconstructed fractional lower order covariance
重构分数低阶协方差的子空间拟合测向算法
2.
In order to solve the degenerative performance of Capon filterbank spectral estimation under alpha-stable distribution noise, a new spectral estimation method based on improved Capon filtrbank is presented, the traditional Capon filterbank is reconstructed with fractional lower order covariance(FLOC).
为了解决Capon滤波器组谱估计方法在稳定分布噪声下性能出现退化的问题,提出了一种改进的Capon滤波器组谱估计方法,利用分数低阶协方差(FLOC)对传统的Capon滤波器组进行重构。
4) lower order aberration
低阶像差
1.
Clinical research of lower order aberrations in myopia patients measured with wavefront aberration analyzer;
波前像差仪测量近视患者低阶像差的临床研究
5) generalized fractional lower-order covariance spectrum
广义分数低阶协方差谱
6) fractional lower order covariance spectrum
分数低阶协方差谱
补充资料：对称差分(n阶的)
对称差分(n阶的)
symmetric difference of order
对称差分(n阶的)l另11111州tric山ffer曰℃eof份der‘c“MMe邓一，ecK即pa3Hoc几“op，皿Kan」，一元实变函数f在点x上的 表达式 声/n、，.、。，/.n一Zk八 △口ffx，h)=)l:’1(一1)“f lx十二二~一竺二生h 1. 一‘““一””k饥戈k/、‘产“戈一2‘’/‘将h换成Zh，下面的表达式也称为对称差分: 息川(一1)*，‘二+、。一2、)。).假若f(x)在x有n阶导数厂时(x)，那么 △二f(x，h)=./戈n)(x)h”+o(h”). T .fl .J’IyKame皿。撰
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参考词条