npf

The Research of NPF Data Acquisition Technology on Windows Platform

基于Windowns环境下的NPF数据捕获技术的研究

When the true model error is need to be estimated , NPF is the only choice .

当需要估计真实模型误差时，只能用NPF。

Methods Obturator was made based on the size of the velopharyngeal aperture determined with NPF .

方法腭咽闭合不全患者通过鼻咽镜检查，根据腭咽孔大小、形状制作腭咽阻塞器。

Objective To compare MRI with NPF in the evaluation of velopharyngeal function of normal phonation .

目的比较MRI和NPF两种方法对腭咽闭合功能的评价。

48h with various concentrations of SIM can not inhibit the growth of NPF .

作用48h各种浓度SIM均不能抑制人NPF生长。

Objective Comparing the examination of velopharyngeal function of normal phonation using CT and nasopharyngofiberscope ( NPF ) .

目的比较CT和鼻咽纤维镜两种方法对正常发音者腭咽闭合功能的检测。

Methods Examination and comparison the velopharyngeal types and velopharyngeal insufficiency rates of10 patients with normal phonation using CT and NPF .

方法应用CT和鼻咽纤维镜分别对10例正常发音者的腭咽闭合类型和腭咽闭合不全比率进行检测并比较。

From algorithm structure and algorithm principle , the equivalent of both NPF and Kalman filter is demonstrated to establish the theoretical basis of NPF algorithm .

从算法结构和估计准则两个方面，论证了NPF算法与Kalman滤波算法的等效性，奠定了联合式NPF滤波算法提出的理论基础，研究了联合式NPF方案的算法实现过程。

The results indicate that when model error is large or even nonlinear , or when measurement error is large , the effects of NPF are superior to that of EKF ;

结果表明：当模型误差较大甚至非线性或测量误差较大时，NPF滤波效果好于EKF；

The comprehensive efficiency of NPF , which takes into acount the influences of electrostatic , impaction and interception , is found out by means of numerical solution .

采用数值解法计算了核孔膜在静电、碰撞、截留三种机理作用下的综合过滤效率。

In state estimation of satellite attitude determination , both traditional extended Kalman filter ( EKF ) and the proposed nonlinear predictive filter ( NPF ) have their own merits and defects .

在确定卫星姿态确定的状态估计法中，经典的扩展卡尔曼滤波（EKF）和新提出的非线性预测滤波（NPF）这两种实时滤波算法各有优缺点。

The new filter utilizes the MEP process of Nonlinear Predictive Filter ( NPF ), which can adjust the inaccurate model in real time and thus remedy the shortage of the UKF .

它利用非线性预测滤波器（NPF）的模型误差预测过程，能够对不准确的系统模型进行实时修正，弥补了UKF方法的不足。

BPF and NPF are two kinds of packet capture architecture in Unix or Windows , being in most common use . They can be used to design various network analyses and softwares for use in management .

BPF与NPF是分别工作在Unix和Windows操作系统中的目前最为流行的数据包捕获架构，它们可用来生成各种网络分析及管理软件。