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Year:
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Issue:
Cubic spline interpolation for. solving navigation stochastic differential model
Author(s):
ZHAO Yuxin
,
CHEN Lijuan
Pages:
987
-
993
Year:
2011
Issue:
7
Journal:
Control Theory & Applications
Keyword:
cubic spline
;
interpolation function
;
Bayesian estimation
;
navigation stochastic differential model
;
Abstract:
提出一种用三次样条插值逼近导航系统状态概率密度函数的方法.导航随机微分模型的弱解由前向Kolmogorov方程表示,其解析解很难求得.本文通过三次样条插值函数来逼近其解可得到状态的先验概率密度函数,再由Bayes公式得到状态的后验概率密度函数,解决了构造三次样条插值条件的难点问题,并以水下潜器组合导航系统为背景,与粒子滤波方法进行性能对比分析,仿真结果验证了三次样条插值逼近导航随机微分模型解析解的...
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