状态估计中确定性采样滤波器的比较分析  

Comparison and Analysis of Deterministic Sampling Filters for State Estimation

作　　者：刘伟[1] 杨峰[1] 张洪才[1] 潘泉[1] 梁彦[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《系统仿真学报》2007年第18期4265-4269,共5页Journal of System Simulation

基　　金：国防科技"十五"预研(102010302);国家自然科学基金(60404011);校英才计划;校青年基金。

摘　　要：基于采样方法的滤波器在非线性滤波领域内得到了广泛应用。其共同特点是利用抽样粒子点模拟系统状态的概率分布,从而不受状态先验分布假设(如高斯假设)的约束,拥有更高的滤波精度和更广的应用范围。在确定性抽样意义下论述了几种现有的确定性采样滤波器,并对这几种滤波器在状态估计领域(滤波)的应用进行了精度和计算负荷分析。采用一维及多维算例验证了几种方法的估计精度。给出基于实际系统需求一般性评价和选用原则。Sampling-based filtering approaches are widely used for the on-line estimation problem of non-Gaussian nonlinear systems. They commonly take advantages of matching the prior density of system state by certain sampling strategies. Theoretical analysis and experimental results on several popular deterministic sampling filters were proposed to show performance on coping with non-gauss nonlinear filtering problems; moreover, guidelines and suggestions were given for practical appliance requisitions.

关 键 词：非线性滤波器 UKF 高斯厄米特滤波器 中心差分滤波器 分离差分滤波器 估计 确定性采样 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]