Computer simulation show that the filter precisions of DD1 correspond to the filter precisions of EKF,and that the filter precisions of DD2 are near even over the filter precisions of UKF.
计算机仿真表明,一阶插值滤波(DD1)滤波精度相当EKF,而二阶插值滤波(DD2)滤波精度接近甚至略优于无轨迹kalman滤波(UKF)。
Using the generalized Piconetype idetities on non-isotropic Heisenberg group,the new first order interpolation inequalities were obtained on non-isotropic Heisenberg group.
在一类非迷向Heisenberg群上研究一阶插值不等式,通过在一类非迷向Heisenberg群上建立一类Hardy型不等式。
The results show that the first difference absolute value can reflect sensitively the contiguous data of quality indexes in time sequence,the directional fluctuation not considered,and the first difference absolute value standard deviation can reflect the overall situation of contiguous data fluctuation of a group of quality indexex data.
结果表明,一阶差分绝对值可以敏感地反映出质量指标在时间顺序上相邻或邻近数据不考虑方向的波动幅度;一阶差分绝对值标准偏差可以反映一组质量指标相邻或邻近数据波动的总体情况。
Application of MFOSM(mean first order second moment)method to non-sudden risk analysis of water quality;
均值一次二阶矩法在水质非突发性风险分析中的应用
According to the first derivative ratio spectrum of the procaine hydrochloride,the peak valley method was applied for the determination at 221 and 231 nm.
应用比值光谱一阶导数法测定盐酸普鲁卡因注射液含量，依据盐酸普鲁卡因比值导数光谱选择２２１ ｎｍ 和２３１ ｎｍ 作为测定波长，比值光谱一阶导数值与浓度（５ ～３０ μｇ／ｍＬ） 线性关系良好，能有效消除其降解产物对氨基苯甲酸的干扰，结果与药典方法比较没有显著差异（ Ｐ＞ ０－０５） 。