1.中国矿业大学信息与控制工程学院,江苏徐州 221116
2.地下空间智能控制教育部工程研究中心,江苏徐州 221116
[ "王国庆 男,1990年6月出生于山东省滕州市.现为中国矿业大学信息与控制工程学院副教授、硕士生导师.从事状态估计、信息融合和机器人导航方面的研究.E-mail: wangguoqing0632@163.com" ]
[ "杨春雨(通讯作者) 男,1979年9月出生于辽宁省朝阳市.现为中国矿业大学信息与控制工程学院教授、博士生导师.从事智能系统控制技术、奇异摄动系统优化控制等方面的研究." ]
[ "马 磊 男,1989年6月出生于江苏省徐州市.现为中国矿业大学信息与控制工程学院助理研究员.从事奇异摄动系统的分析与设计、网络化控制系统的控制与滤波、信息物理系统的安全估计与控制的研究.E-mail: malei@cumt.edu.cn" ]
收稿:2022-01-29,
修回:2022-04-25,
纸质出版:2022-11-25
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王国庆,杨春雨,马磊.基于多变量Laplace分布的非线性系统分布式鲁棒状态估计[J].电子学报,2022,50(11):2610-2618.
WANG Guo-qing,YANG Chun-yu,MA Lei.Distributed Robust State Estimation for Nonlinear Systems Based on Multivariate Laplace Distribution[J].ACTA ELECTRONICA SINICA,2022,50(11):2610-2618.
王国庆,杨春雨,马磊.基于多变量Laplace分布的非线性系统分布式鲁棒状态估计[J].电子学报,2022,50(11):2610-2618. DOI: 10.12263/DZXB.20220141.
WANG Guo-qing,YANG Chun-yu,MA Lei.Distributed Robust State Estimation for Nonlinear Systems Based on Multivariate Laplace Distribution[J].ACTA ELECTRONICA SINICA,2022,50(11):2610-2618. DOI: 10.12263/DZXB.20220141.
本文考虑非高斯噪声下传感器网络的状态估计问题.在机动目标跟踪、室内定位、水声导航等应用中,传感器的非高斯噪声会造成针对高斯噪声设计的常规状态估计算法精度下降.在现有针对单传感器系统的基于多变量Laplace(Multivariate Laplace,ML)鲁棒状态估计(Robust State Estimation based on ML,RSE-ML)算法基础上,本文借助信息滤波的特点,推导了针对多传感器系统的集中式RSE-ML(Centralized RSE-ML,CRSE-ML)算法,进一步利用一致性平均得到分布式RSE-ML(Distributed RSE-ML,DRSE-ML)算法.本文提出的DRSE-ML算法中利用ML建模非高斯噪声,借助变分贝叶斯方法估计噪声和状态参数,采用一致性算法进行分布式信息交互,克服了集中式算法通信和计算负担重的缺点,且具有自由参数少、估计精度高的特点.仿真结果表明,所提出的DRSE-ML算法估计精度优于现有相关算法,且能逼近集中式CRSE-ML算法的估计精度.
This paper considers the state estimation problem of sensor networks with non-Gaussian noise. In many applications
such as maneuvering target tracking
indoor positioning and underwater acoustic navigation
the non-Gaussian noise of the sensors may reduce the accuracy of the estimation algorithm designed for Gaussian noise. The centralized robust state estimation based on multivariate Laplace(CRSE-ML) algorithm is derived according to the characteristics of information filtering on the basis of existing RSE-ML
which is designed for single-sensor systems. Following that
the distributed RSE-ML(DRSE-ML) algorithm is then obtained with the introduction of consensus average. Within the DRSE-ML algorithm
the ML distribution is used to model non-Gaussian noise
the variational Bayesian method is applied to estimate noise and state parameters
and the consensus algorithm is adopted for distributed information exchange. The distributed algorithm overcomes the shortcomings of the centralized one
which has heavy communication and computational burden
and has few free parameters and high estimation accuracy. Simulation results show that the estimation accuracy of the proposed DRSE-ML is better than the existing related algorithms
and can approach the estimation accuracy of the centralized CRSE-ML algorithm.
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