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1)  Second order nonlinear interpolation filter
二阶插值非线性滤波
2)  nonlinear interpolation filtering
插值非线性滤波
1.
The nonlinear and linear error models of initial alignment for strapdown inertial navigation system(SINS) on stationary base were discussed,the principle of nonlinear interpolation filtering approach was analyzed,and the algorithm of nonlinear interpolation filtering for system model with additive noise was introduced,then it is applied to initial alignment for SINS on stationary base.
讨论了捷联惯性导航系统(SINS)静基座初始对准的非线性和线性误差模型,提出一种基于插值非线性滤波的SINS静基座初始对准方法。
3)  second-order nonlinear filtering
二阶非线性滤波
1.
On-orbit calibration of satellite gyro based on second-order nonlinear filtering;
基于二阶非线性滤波的星上陀螺在轨标定
4)  DD2
二阶插值滤波
1.
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)。
5)  Second-Order Nonlinear filter
二阶非线性滤波器
6)  Bilinear Interpolation Filtering
双线性插值滤波
补充资料:非线性最小二乘拟合
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性质:用最小二乘法拟合非线性方程。有些变量之间的非线性模型,通过变量变换可以化为线性模型,此称为外在线性。而有些变量之间的非线性模型,通过变量变换不能化为线性模型,通称为内在非线性。对于非线性模型y=f(ξ,θ)+ε,其残差平方和。S(θ)是θ的函数,当模型关于θ是非线性的,正规方程关于θ也是非线性的。基于使残差平方和s(θ)达到极小的原理求出θ的估计值,拟合非线性回归方程。

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