Article(id=1244336189478646136, tenantId=1146029695717560320, journalId=1244323073571209252, issueId=1244336186114819067, articleNumber=null, orderNo=null, doi=10.13695/j.cnki.12-1222/o3.2025.10.005, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1734105600000, receivedDateStr=2024-12-14, revisedDate=null, revisedDateStr=null, acceptedDate=1752163200000, acceptedDateStr=2025-07-11, onlineDate=1774602466220, onlineDateStr=2026-03-27, pubDate=1761753600000, pubDateStr=2025-10-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774602466220, onlineIssueDateStr=2026-03-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774602466220, creator=13701087609, updateTime=1774602466220, updator=13701087609, issue=Issue{id=1244336186114819067, tenantId=1146029695717560320, journalId=1244323073571209252, year='2025', volume='33', issue='10', pageStart='955', pageEnd='1060', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1774602465418, creator=13701087609, updateTime=1774604459075, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1244344548185452773, tenantId=1146029695717560320, journalId=1244323073571209252, issueId=1244336186114819067, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1244344548185452774, tenantId=1146029695717560320, journalId=1244323073571209252, issueId=1244336186114819067, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=988, endPage=997, ext={EN=ArticleExt(id=1244336189726110074, articleId=1244336189478646136, tenantId=1146029695717560320, journalId=1244323073571209252, language=EN, title=Adaptive maximum mixture correntropy quaternion Kalman filter and its application, columnId=1244336188069364733, journalTitle=Journal of Chinese Inertial Technology, columnName=Integrated Navigation Technology, runingTitle=null, highlight=null, articleAbstract=

To address the accuracy degradation of the Kalman filter (KF) algorithm defined in quaternion space under non-Gaussian noise, the advantages of mixture correntropy is utilized to handle such problem. A recursive quaternion mixture correntropy cost function is defined and the posterior estimation through fixed-point iteration is obtained, resulting in the maximum mixture correntropy quaternion KF (MMCQKF) algorithm. Additionally, the variational Bayesian method is introduced to adaptively update the nominal measurement noise variance matrix, leading to the adaptive MMCQKF, which further improves state estimation accuracy in complex scenarios. Simulation results for target tracking in challenging noise environments show that the root mean square error of position estimation using the proposed algorithm is reduced by approximately 53.2% compared to the maximum correntropy quaternion KF. Furthermore, integrated navigation experiments conducted in complex non-Gaussian noise environments reveal that the error in attitude angle, velocity, and position achieved by the proposed algorithm are reduced by 70.6%, 59.1% and 73.1%, respectively, compared to the maximum correntropy quaternion KF. Experiments demonstrate the significant improvement in estimation accuracy and adaptive capability of the proposed algorithm.

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针对直接定义在四元数空间的卡尔曼滤波算法在非高斯噪声下精度退化的问题,利用混合相关熵处理非高斯数据的优势,定义递归结构的四元数混合相关熵代价函数,通过固定点迭代求解后验估计,建立最大混合熵四元数卡尔曼滤波算法。在此基础上,进一步引入变分贝叶斯方法自适应更新主导量测噪声方差矩阵,形成自适应最大混合熵四元数卡尔曼滤波算法,提升了复杂场景下的状态估计精度。复杂噪声环境下的目标跟踪实验表明,所提算法位置估计均方根误差较最大相关熵卡尔曼滤波降低约53.2%;复杂非高斯噪声环境下组合导航实验表明,其姿态角、速度及位置误差较最大相关熵四元数卡尔曼滤波分别降低70.6%、59.1%和73.1%,具有更好的估计精度和自适应能力。

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杨春雨(1979—),男,博士,教授,主要研究方向为工业过程运行控制、物理信息系统和鲁棒控制。
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王国庆(1990—),男,博士,副教授,主要研究方向为智能机器人导航定位及多传感器智能信息融合。

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王国庆(1990—),男,博士,副教授,主要研究方向为智能机器人导航定位及多传感器智能信息融合。

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王国庆(1990—),男,博士,副教授,主要研究方向为智能机器人导航定位及多传感器智能信息融合。

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USA, 2023: 680-690., articleTitle=IMU based context detection of changes in the terrain topography, refAbstract=null)], funds=[Fund(id=1244336258181345960, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, awardId=62373362; U24A20272; 62273350; 62203448, language=CN, fundingSource=国家自然科学基金项目(62373362; U24A20272; 62273350; 62203448), fundOrder=null, country=null), Fund(id=1244336258248454825, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, awardId=2025T180480, language=CN, fundingSource=中国博士后科学基金(2025T180480), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1244336248794493542, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, xref=null, ext=[AuthorCompanyExt(id=1244336248802882151, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, companyId=1244336248794493542, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China), AuthorCompanyExt(id=1244336248811270760, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, companyId=1244336248794493542, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中国矿业大学 信息与控制工程学院,徐州 221116)])], figs=[ArticleFig(id=1244336255597654668, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Fig.1, caption=RMSE of the first state variable for different algorithms in case 1, figureFileSmall=NJrvxBZRnsse24tWigrorA==, figureFileBig=jekEpO+awurt2+O3u2VcgQ==, tableContent=null), ArticleFig(id=1244336255698317965, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=图1, caption=情况1下不同算法第一个状态变量的均方根误差, figureFileSmall=NJrvxBZRnsse24tWigrorA==, figureFileBig=jekEpO+awurt2+O3u2VcgQ==, tableContent=null), ArticleFig(id=1244336255887061646, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Fig.2, caption=RMSE of the second state variable for different algorithms in case 1, figureFileSmall=KMC7GI6m3tJ14+qemANycw==, figureFileBig=2klpP/CA53IBArBa/nFglA==, tableContent=null), ArticleFig(id=1244336256008696463, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=图2, caption=情况1下不同算法第二个状态变量的均方根误差, figureFileSmall=KMC7GI6m3tJ14+qemANycw==, figureFileBig=2klpP/CA53IBArBa/nFglA==, tableContent=null), ArticleFig(id=1244336256079999632, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Fig.3, caption=RMSE of the first state variable for different algorithms in case 2, figureFileSmall=hWh5pDDvey6udxYv6YdgSg==, figureFileBig=1zIV4KT4ts6MRalOzRNOqg==, tableContent=null), ArticleFig(id=1244336256159691409, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=图3, caption=情况2下不同算法第一个状态变量的均方根误差, figureFileSmall=hWh5pDDvey6udxYv6YdgSg==, figureFileBig=1zIV4KT4ts6MRalOzRNOqg==, tableContent=null), ArticleFig(id=1244336256264549010, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Fig.4, caption=RMSE of the second state variable for different algorithms in case 2, figureFileSmall=IJq87vSpf4m5Ai/WHqQmGw==, figureFileBig=F4Mw6Ontt2cA6+YPtqB21g==, tableContent=null), ArticleFig(id=1244336256331657875, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=图4, caption=情况2下不同算法第二个状态变量的均方根误差, figureFileSmall=IJq87vSpf4m5Ai/WHqQmGw==, figureFileBig=F4Mw6Ontt2cA6+YPtqB21g==, tableContent=null), ArticleFig(id=1244336256398766740, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Fig.5, caption=RMSE of the first state variable for different α, figureFileSmall=SYWu/uq6odEgnevnvQukYg==, figureFileBig=Fn3zLq3QoDEeNu7UUvDwlw==, tableContent=null), ArticleFig(id=1244336256461681301, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=图5, caption=α取不同数值时第一个状态变量的均方根误差, figureFileSmall=SYWu/uq6odEgnevnvQukYg==, figureFileBig=Fn3zLq3QoDEeNu7UUvDwlw==, tableContent=null), ArticleFig(id=1244336256537178774, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Fig.6, caption=RMSE of the second state variable for different α, figureFileSmall=B/flrCnE+nsnmMJ4Mll/GQ==, figureFileBig=kFsmjZbmzpmX7BxOY/gBng==, tableContent=null), ArticleFig(id=1244336256637842071, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=图6, caption=α取不同数值时第二个状态变量的均方根误差, figureFileSmall=B/flrCnE+nsnmMJ4Mll/GQ==, figureFileBig=kFsmjZbmzpmX7BxOY/gBng==, tableContent=null), ArticleFig(id=1244336256709145240, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Fig.7, caption=RMSE of errors for different filters in integrated navigation, figureFileSmall=1zusDDGoJSCyRM+iUBXhCQ==, figureFileBig=fiXU9onkLHpEoWEU/4bEHw==, tableContent=null), ArticleFig(id=1244336256784642713, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=图7, caption=组合导航中不同滤波算法的均方根误差, figureFileSmall=1zusDDGoJSCyRM+iUBXhCQ==, figureFileBig=fiXU9onkLHpEoWEU/4bEHw==, tableContent=null), ArticleFig(id=1244336256872723098, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
输入: , , Φi-1, Hi, Ri, yi, Qi-1, σ1, σ2, t
时间更新:
根据式(12)利用;计算
量测更新:
初始化:
利用四元数Cholesky分解得到
根据式(17)计算TiWi
四元数不动点迭代:
FOR    t=1,…,N
          根据式(25)、式(26)、式(31)和式(32)计算
          根据式(37)计算
          根据式(39)计算
END FOR
根据更新
输出:
), ArticleFig(id=1244336256948220571, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=算法1, caption=

MMCQKF算法

, figureFileSmall=null, figureFileBig=null, tableContent=
输入: , , Φi-1, Hi, Ri, yi, Qi-1, σ1, σ2, t
时间更新:
根据式(12)利用;计算
量测更新:
初始化:
利用四元数Cholesky分解得到
根据式(17)计算TiWi
四元数不动点迭代:
FOR    t=1,…,N
          根据式(25)、式(26)、式(31)和式(32)计算
          根据式(37)计算
          根据式(39)计算
END FOR
根据更新
输出:
), ArticleFig(id=1244336257032106652, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
输入: RiΦiHiyiϑN
初始化:
变分贝叶斯迭代:
FOR    l=0,1,…,N=-1
          根据式(44)更新
          根据式(45)~式(47)计算
          根据式(53)更新
          根据式(50)计算
          根据式(54)~式(56)计算
END FOR
输出:
), ArticleFig(id=1244336257099215517, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=算法2, caption=

AMMCQKF算法

, figureFileSmall=null, figureFileBig=null, tableContent=
输入: RiΦiHiyiϑN
初始化:
变分贝叶斯迭代:
FOR    l=0,1,…,N=-1
          根据式(44)更新
          根据式(45)~式(47)计算
          根据式(53)更新
          根据式(50)计算
          根据式(54)~式(56)计算
END FOR
输出:
), ArticleFig(id=1244336257170518686, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Tab.1, caption=

Computational complexity of AMMCQKF

, figureFileSmall=null, figureFileBig=null, tableContent=
步骤计算复杂度
状态预测相关运算(32T+128)n3+(32T+20)n2+TOn3
固定点迭代量测更新(64T+96)n2m+(64T+32)nm2+(84T-4)nm+TOm3
变分贝叶斯迭代L(24m3+18m2+6m
状态与协方差更新(34T-4)n+64Tm3+4Tm+TOm3
), ArticleFig(id=1244336257241821855, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=表1, caption=

AMMCQKF的计算复杂度

, figureFileSmall=null, figureFileBig=null, tableContent=
步骤计算复杂度
状态预测相关运算(32T+128)n3+(32T+20)n2+TOn3
固定点迭代量测更新(64T+96)n2m+(64T+32)nm2+(84T-4)nm+TOm3
变分贝叶斯迭代L(24m3+18m2+6m
状态与协方差更新(34T-4)n+64Tm3+4Tm+TOm3
), ArticleFig(id=1244336257334096544, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Tab.2, caption=

ARMSE of different algorithms in case 1

, figureFileSmall=null, figureFileBig=null, tableContent=
算法名称ARMSEx(1)ARMSEx(2)
QKF2.113401.90190
MCQKF0.681950.65864
MMCQKF10.409190.36012
MMCQKF20.432330.41094
MMCQKF30.556470.53255
AMMCQKF0.321330.30568
), ArticleFig(id=1244336257443148449, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=表2, caption=

情况1下不同算法的ARMSE

, figureFileSmall=null, figureFileBig=null, tableContent=
算法名称ARMSEx(1)ARMSEx(2)
QKF2.113401.90190
MCQKF0.681950.65864
MMCQKF10.409190.36012
MMCQKF20.432330.41094
MMCQKF30.556470.53255
AMMCQKF0.321330.30568
), ArticleFig(id=1244336257539617442, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Tab.3, caption=

ARMSE of different algorithms in case 2

, figureFileSmall=null, figureFileBig=null, tableContent=
算法名称ARMSEx(1)ARMSEx(2)
QKF2.453402.01240
MCQKF0.763250.71140
MMCQKF10.482580.47236
MMCQKF20.513500.48533
MMCQKF30.613200.59640
AMMCQKF0.387100.33320
), ArticleFig(id=1244336257652863651, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=表3, caption=

情况2下不同算法的ARMSE

, figureFileSmall=null, figureFileBig=null, tableContent=
算法名称ARMSEx(1)ARMSEx(2)
QKF2.453402.01240
MCQKF0.763250.71140
MMCQKF10.482580.47236
MMCQKF20.513500.48533
MMCQKF30.613200.59640
AMMCQKF0.387100.33320
), ArticleFig(id=1244336257808052900, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Tab.4, caption=

Experimental parameter settings

, figureFileSmall=null, figureFileBig=null, tableContent=
类型仿真参数参数值
传感器误差陀螺仪零偏0.01(°)/h
陀螺仪随机噪声
加速度计零偏100 μg
加速度计随机噪声
初始误差姿态误差(0.05°,0.04°,1°)
速度误差(0.013 m/s,0.362 m/s,0.024 m/s)
位置误差(0.027 m,2.41 m,12.99 m)
), ArticleFig(id=1244336257921299109, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=表4, caption=

实验参数设置

, figureFileSmall=null, figureFileBig=null, tableContent=
类型仿真参数参数值
传感器误差陀螺仪零偏0.01(°)/h
陀螺仪随机噪声
加速度计零偏100 μg
加速度计随机噪声
初始误差姿态误差(0.05°,0.04°,1°)
速度误差(0.013 m/s,0.362 m/s,0.024 m/s)
位置误差(0.027 m,2.41 m,12.99 m)
), ArticleFig(id=1244336257988407974, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=EN, label=Tab.5, caption=

ARMSE of different filtering algorithms in integrated navigation model

, figureFileSmall=null, figureFileBig=null, tableContent=
参数QKFMCQKFMMCQKFAMMCQKF
φN0.02340.00510.00290.0015
φE0.01550.00250.00210.0017
φD0.04660.01550.01120.0089
δvN1.67660.34180.28550.1399
δvE1.75840.53560.48230.1779
δvD0.63960.18560.15320.0595
δpN15.87535.05544.68643.5485
δpE16.98324.68644.21011.2632
δpD12.85485.45354.99524.1491
), ArticleFig(id=1244336258080682663, tenantId=1146029695717560320, journalId=1244323073571209252, articleId=1244336189478646136, language=CN, label=表5, caption=

组合导航模型中不同滤波算法的ARMSE

, figureFileSmall=null, figureFileBig=null, tableContent=
参数QKFMCQKFMMCQKFAMMCQKF
φN0.02340.00510.00290.0015
φE0.01550.00250.00210.0017
φD0.04660.01550.01120.0089
δvN1.67660.34180.28550.1399
δvE1.75840.53560.48230.1779
δvD0.63960.18560.15320.0595
δpN15.87535.05544.68643.5485
δpE16.98324.68644.21011.2632
δpD12.85485.45354.99524.1491
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自适应最大混合熵四元数卡尔曼滤波及其应用
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王国庆 , 赵鑫 , 王琴 , 杨春雨 , 马磊
中国惯性技术学报 | 组合导航技术 2025,33(10): 988-997
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中国惯性技术学报 | 组合导航技术 2025, 33(10): 988-997
自适应最大混合熵四元数卡尔曼滤波及其应用
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王国庆, 赵鑫, 王琴, 杨春雨, 马磊
作者信息
  • 中国矿业大学 信息与控制工程学院,徐州 221116
  • 王国庆(1990—),男,博士,副教授,主要研究方向为智能机器人导航定位及多传感器智能信息融合。

通讯作者:

杨春雨(1979—),男,博士,教授,主要研究方向为工业过程运行控制、物理信息系统和鲁棒控制。
Adaptive maximum mixture correntropy quaternion Kalman filter and its application
Guoqing WANG, Xin ZHAO, Qin WANG, Chunyu YANG, Lei MA
Affiliations
  • School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
出版时间: 2025-10-30 doi: 10.13695/j.cnki.12-1222/o3.2025.10.005
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针对直接定义在四元数空间的卡尔曼滤波算法在非高斯噪声下精度退化的问题,利用混合相关熵处理非高斯数据的优势,定义递归结构的四元数混合相关熵代价函数,通过固定点迭代求解后验估计,建立最大混合熵四元数卡尔曼滤波算法。在此基础上,进一步引入变分贝叶斯方法自适应更新主导量测噪声方差矩阵,形成自适应最大混合熵四元数卡尔曼滤波算法,提升了复杂场景下的状态估计精度。复杂噪声环境下的目标跟踪实验表明,所提算法位置估计均方根误差较最大相关熵卡尔曼滤波降低约53.2%;复杂非高斯噪声环境下组合导航实验表明,其姿态角、速度及位置误差较最大相关熵四元数卡尔曼滤波分别降低70.6%、59.1%和73.1%,具有更好的估计精度和自适应能力。

最大混合熵  /  四元数卡尔曼滤波  /  非高斯噪声  /  变分贝叶斯  /  组合导航

To address the accuracy degradation of the Kalman filter (KF) algorithm defined in quaternion space under non-Gaussian noise, the advantages of mixture correntropy is utilized to handle such problem. A recursive quaternion mixture correntropy cost function is defined and the posterior estimation through fixed-point iteration is obtained, resulting in the maximum mixture correntropy quaternion KF (MMCQKF) algorithm. Additionally, the variational Bayesian method is introduced to adaptively update the nominal measurement noise variance matrix, leading to the adaptive MMCQKF, which further improves state estimation accuracy in complex scenarios. Simulation results for target tracking in challenging noise environments show that the root mean square error of position estimation using the proposed algorithm is reduced by approximately 53.2% compared to the maximum correntropy quaternion KF. Furthermore, integrated navigation experiments conducted in complex non-Gaussian noise environments reveal that the error in attitude angle, velocity, and position achieved by the proposed algorithm are reduced by 70.6%, 59.1% and 73.1%, respectively, compared to the maximum correntropy quaternion KF. Experiments demonstrate the significant improvement in estimation accuracy and adaptive capability of the proposed algorithm.

maximum mixture correntropy  /  quaternion Kalman filter  /  non-Gaussian noise  /  variational Bayesian  /  integrated navigation
王国庆, 赵鑫, 王琴, 杨春雨, 马磊. 自适应最大混合熵四元数卡尔曼滤波及其应用. 中国惯性技术学报, 2025 , 33 (10) : 988 -997 . DOI: 10.13695/j.cnki.12-1222/o3.2025.10.005
Guoqing WANG, Xin ZHAO, Qin WANG, Chunyu YANG, Lei MA. Adaptive maximum mixture correntropy quaternion Kalman filter and its application[J]. Journal of Chinese Inertial Technology, 2025 , 33 (10) : 988 -997 . DOI: 10.13695/j.cnki.12-1222/o3.2025.10.005
状态估计是组合导航、目标跟踪、系统控制、信息融合等众多应用领域的核心技术[1,2]。卡尔曼滤波(Kalman Filter,KF)为线性高斯系统提供了多种意义下最优的状态估计解决方案[3]。经典的卡尔曼滤波是针对定义在实数变量空间的向量进行设计的,在处理导航定位、姿态估计、目标跟踪等涉及到三维旋转的估计问题时容易出现奇异性问题或者存在较多冗余变量。四元数代数在处理此类问题时提供了更为精确且数学上更易处理的解决方案,且其约束条件相对较少,可以有效规避与旋转相关的万向节锁定等问题,在数学、物理及计算机图形学等多个领域得到广泛应用。将KF与四元数域表示相结合,可以充分利用KF的状态估计方法框架和四元数表征三维空间运动的独特优势,较转化为实数域再进行状态估计能够获得更好的估计精度和数值稳定性[4]
针对定义在四元数上的估计问题,目前常用的四元数卡尔曼滤波器利用四变量实有序向量的形式来模拟四元数运算,即采用形式,而非直接采用四元数的自然表示。从方法论角度而言,直接在四元数域内构建状态估计算法,可以避免在四元数与实数之间频繁转换,也有望降低转换带来的近似误差[5]。这种四元数表示方法在目标追踪、航天器跟踪、电网频率估计等众多领域展现出独特的应用价值[6,7]
然而,全四元数卡尔曼滤波器(Fully Quaternion Kalman Filter,QKF)在实际应用中面临两大挑战[5]。首先,此类方法是基于高斯噪声假设按照最小均方误差准则推导得到的。因此,在目标跟踪、协同导航等存在非高斯脉冲噪声干扰的场景中,QKF算法性能会下降。其次,QKF的推导过程依赖于高维复数–实数微积分(Hyper-complex Real Calculus,HR)导数,由于该方法未定义乘法和链式法则,导数计算尤为困难。
最大相关熵准则(Maximum Correntropy Criterion,MCC)是近年来提出的一种新的度量,由于其能够捕获更高阶矩信息而在非高斯信号处理中得到广泛应用。Chen等人[8]基于最大相关熵代价函数,利用固定点迭代求解方法提出了一种最大相关熵卡尔曼滤波器(Maximum Correntropy Kalman Filter,MCKF),能够显著提高非高斯噪声下状态估计精度。由于MCKF的估计精度受其核带宽参数影响,通常只能依赖于经验或试错法进行设定,选取不当会导致估计精度下降。针对此类问题,Chen等人[9]提出了混合相关熵的概念,通过采用具有不同核参数的混合熵来替代单一的高斯相关熵,基于最大混合相关熵准则(Maximum Mixture Correntropy Criterion,MMCC)的估计算法进一步提高了复杂时变噪声应用中估计精度。进一步结合HR运算,Ogunfunmi等人[10]提出了一种四元数最大相关熵算法,提高了算法在非高斯噪声下的鲁棒性。Lin等人[11]将MCKF扩展到四元数域,提出了最大相关熵四元数卡尔曼滤波(Maximum Correntropy Quaternion Kalman Filter,MCQKF),提高了QKF对非高斯噪声的鲁棒性。与MCKF类似,MCQKF同样面临核带宽选择困难进而影响最终的估计效果[12]。此外,在实际应用中除异常非高斯噪声干扰外,量测噪声方差信息不精确也会导致主导协方差矩阵难以准确反映真实量测噪声特性,进而影响估计效果[13,14]
针对现有方法存在的不足,本文提出了一种自适应混合熵四元数卡尔曼滤波算法。首先,通过定义四元数核的最大混合熵代价函数替代现有四元数核最大熵代价函数,利用四元数迭代求解后验估计,构建了最大混合熵四元数卡尔曼滤波(Maximum Mixture Correntropy Quaternion Kalman Filter,MMCQKF)算法,显著提升了非高斯脉冲噪声环境下的估计精度。其次,引入变分贝叶斯方法自适应更新主导误差协方差矩阵,形成自适应MMCQKF(Adaptive MMCQKF,AMMCQKF),进一步改善算法估计精度。最后,通过目标跟踪和组合导航实验验证了算法的有效性。
文中上标(⋅)T表示转置,(⋅)*表示共轭,(⋅)H表示厄米算符。⊗为克罗内克积,In表示为一个n×n的单位矩阵。
本节介绍与后文直接相关的四元数代数基础、广义高维复数–实数微积分以及混合相关熵的基本概念。
四元数变量空间定义为:
其中,基底为ı为三个虚数单位,并满足汉密尔顿规则。
对于任意四元数,均可以表示为以下标量和矢量结合的结构:
其中,为由三个虚部表示的矢量部分,为标量(实)部分。对于一个四元数变量,其共轭为q*=Sq-Vq,模为
对于四元数q1,其乘积为:
其中,点号“⋅”表示标量积,叉号“×”表示向量积。由于向量积的存在,四元数积是不可交换的,即q1q2q2q1
解决涉及四元数的优化问题通常需要目标函数的一阶或二阶导数。然而,四元数变量的实函数本质上是非解析的,传统HR导数引入四元数对合进行处理。HR微积分作为Wirtinger微积分的扩展,涵盖了HR导数及HR*导数。
HR微积分因缺乏乘法和链式法则而计算复杂。广义高维复数–实数微积分(Generalized HR,GHR)通过引入高效的乘法和链式法则解决了这一问题。尽管四元数乘法的不可交换性使得GHR需要分别定义左导数和右导数,但在GHR微积分框架内,四元数变量的实值函数左导数和右导数结果一致,即在基于四元数的优化问题中选择左右导数对最终结果并无影响。因此,本文主要介绍GHR框架下右导数的定义及其性质,即如果是实可微的,那么函数f关于qµ的右GHR导数为[15]
其中,,∂f/∂qi为函数f关于qii=abcd)的导数,GHR导数的概念在其他正交基中同样适用。
若函数均在实域上可微,则其乘积也在实数域上可微。GHR满足以下乘法法则[15]
将GHR乘法规则推广到四元数矩阵变量,即对于四元数函数矩阵H=FG,其中,则有以下关系成立[15]
其中,雅可比矩阵的转置表示梯度,C为常数矩阵,具体的推导详见文献[15]。
相关熵是两个随机变量间的一种广义相似度量。给定两个四元数变量,如果已知其联合分布函数,则其相关熵定义为:
其中,E(⋅)表示期望运算符,表示的平移不变的Mercer核函数,本文选用常用的高斯核函数:
可以看到,核带宽σ是核函数中的关键参数。若核带宽选择不当,基于相关熵的算法的估计精度将会受到影响。为降低核带宽的影响,混合相关熵采用两个高斯函数的混合(线性凸组合)作为核函数,其定义为:
其中,σ1σ2是高斯函数的核带宽,0≤α≤1为混合系数。当α=1或者0时,混合熵将退化传统的熵
实际应用中,通常难以得到的联合分布函数,可以借助样本数据实现熵的估计:
其中,ei)=q1i)-q2i),抽取的N个样本。
现有MCQKF算法是基于四元数MCC准则推导得到的,在实际复杂时变的非高斯噪声应用中,由于核带宽固定且主导方差缺乏自适应更新的能力会导致现有MCQKF估计效果下降。考虑到混合相关熵在处理非高斯噪声信号的优势,本文构建基于递归形式的四元数混合相关熵代价函数,随后借助固定点迭代进行后验估计求解,得到基于混合相关熵的四元数卡尔曼滤波算法(MMCQKF)。在此基础上,进一步利用变分贝叶斯方法进一步实现主导噪声方差矩阵的自适应更新,提高算法的估计效果。
考虑一个变量均为四元数的线性离散系统,其状态空间模型可以表示为:
其中,n维四元数状态变量;m维四元数量测向量;分别为已知的线性状态转移矩阵和量测矩阵;分别为相互独立的过程噪声和量测噪声,对应的主导协方差矩阵分别为Qi-1Ri
与经典KF滤波算法类似,该算法状态估计初始化为,相应协方差为P0∣0=P0,其中x0P0为已知初始状态的均值和方差矩阵。MMCQKF算法同样包含时间更新和量测更新两个步骤。
(1)时间更新:
假设已经得到第i-1时刻的状态估计值为,其估计误差协方差为Pi-1|i-1,则与常规KF一样,先验状态估计及其估计误差协方差Pi|i-1更新为:
(2)量测更新:
根据一步预测误差的表达式并结合量测更新方程,可以得到如下关系式成立:
其中,噪声项τi为:
其对应的主导协方差矩阵为:
其中,Bi可由Cholesky分解获得。
将式(13)的两边左乘,可以得到:
其中,
由于,因此残差ξi各元素是相互独立的。
考虑到混合相关熵在处理非高斯噪声时的优势,在式(10)和式(17)递归形形式的误差向量基础上定义如下基于MMCC的代价函数:
其中,ξik=tik-wikxi表示的ξik个分量,tikTi的第k个元素,wikWi的第k行,L=m+nTi的维数。
注1:本文代价函数是在现有相关熵代价函数基础上的扩展。可以证明,针对线性高斯噪声系统的极大后验估计可以转化为求解二范数形式的代价函数问题,但是在非高斯噪声场景下其性能退化严重。现有MCKF利用相关熵在非高斯信息处理的优势,将二范数形式代价函数替换为单核相关熵的形式,提高了其估计性能,但是存在对于核带宽参数选择敏感的问题。本文进一步提出了在四元数域下的混合相关熵代价函数,以期能够实现更好的估计性能。
通过求解以上代价函数,可以得到MMCC准则下,系统状态xi的最优估计为:
利用定义在四元数上的GHR导数链式规则和四元数矩阵导数规则,可以得到:
利用式(20)和式(21),可以将式(18)整理为如下结构:
其中,为常数。
整理式(22),可以得到:
其中,
由于ξik=tik-wikxi,因此式(23)最优解实际上是xi的不动点方程,具有如下结构:
为获得xi的估计值,可以用以下四元数不动点迭代算法求解:
其中,上标t表示固定点迭代次数,表示第t次迭代的状态估计值。
此时,对应式(23)中的中间变量有:
为方便后面运算,令:
利用矩阵逆引理,式(29)可以计算为:
进一步,由式(17)、式(33)和式(34)可以得到:
根据式(23)、式(35)和式(36),可以得到后验状态估计为:
其中,
最后,后验协方差矩阵可以表示为:
为便于理解,MMCQKF算法在一个采样周期内的伪代码在算法1中给出。
MMCQKF算法能够有效抑制偏离主导分布的异常值。然而,在复杂应用中,测量环境的多变性会导致量测噪声时变,使得量测噪声主导协方差矩阵难以准确表征真实噪声特性。由于MMCQKF对量测噪声方差矩阵的利用能力有限,可能导致滤波精度下降。为此,本节采用基于变分贝叶斯的后验量测噪声方差更新方法,以更准确地反映系统噪声的动态变化,从而提升滤波精度和稳定性。
利用逆威沙特分布对主导量测噪声协方差矩阵Ri进行建模[16]
其中,p(⋅)表示概率密度函数,IW(⋅)表示逆威沙特分布,分别为pRi|y1:i-1)的自由度参数和逆尺度矩阵,其均值设置为:
式(41)中,是量测噪声协方差矩阵的调节参数,
估计变量xiRi需计算联合后验概率密度函数pxiRi|y1:i)。由于解析解不存在,本文借助变分贝叶斯方法进行隐变量的近似求解。在变分贝叶斯框架下,联合概率密度函数pxiRi|y1:i)可以近似表示为:
其中,q(⋅)表示p(⋅)的近似后验概率密度函数。
根据变分贝叶斯框架,式(42)最优解可以表示为:
其中,log(⋅)表示对数函数运算,θ中的任意元素,是除θ之外的所有元素,Cθ表示变量θ的相关的常数。可以通过固定点迭代的方法求解式(43)。
θ=Ri,通过匹配参数,可以发现ql+1)Ri)后验分布为自由度参数为、逆尺度矩阵为的逆威沙特分布:
其中,
在完成第l+1次迭代后,本文对似然概率密度函数进行了相应的调整与完善,具体定义如下:
其中,N(⋅;µΣ)表示均值为µ、协方差为Σ的高斯分布。
经过修正的量测噪声协方差矩阵,具体如下:
其中,
同上,令θ=xi,可得:
其中,常量为:
综上,由ql+1)xi)可以得到高斯分布概率密度函数的更新:
根据卡尔曼滤波的基本结果,可以得到:
固定点迭代N次之后,变分近似的后验概率密度函数为:
AMMCQKF变分贝叶斯后验更新的伪代码在算法2中给出。
由于两个四元数变量之间的乘积或加法运算包含多个实值运算(四元数乘法运算等效于16次实数乘法和12次加减法操作,而加减法则对应4次实数加减操作),因此四元数算法的计算复杂度分析也不同于实值算法。根据四元数运算复杂度分析方法,可以得到文献[11]所提出的MCQKF算法的计算复杂度为:
其中,Om3表示计算复杂度与m的立方值呈正比,T为固定点迭代次数。
算法1中MMCQKF算法在MCQKF算法基础上引入混合相关熵概念,每个迭代需额外计算双核权重及混合系数。AMMCQKF在MMCQKF的基础上,引入了变分贝叶斯方法来自适应更新量测噪声方差矩阵。根据表1该算法各步骤的计算量,可以得到AMMCQKF算法总体的计算复杂度为:
可以看出,尽管AMMCQKF算法的计算复杂度相较于传统MCQKF算法略有提升,但仍处于同一量级。本文方法通过引入混合熵准则与自适应噪声估计方法,以较小的计算代价显著增强了非高斯噪声环境下状态估计的精度与鲁棒性。
本文采用目标跟踪和组合导航两个典型应用场景,对所提出的AMMCQKF算法与同类算法的估计性能进行比较。评价指标选用均方根误差(Root-Mean-Square Error,RMSE)和平均均方根误差(Average RMSE,ARMSE)[17,18]
二维场景目标跟踪问题中状态方程和量测方程分别为:
其中,θ=π/18,为系统状态,为过程噪声,yi为量测值,为量测噪声。
在仿真中,状态估计初始化为,初始状态为,每种算法的初始误差协方差为P0|0=diag(0.12 0.12)。对比算法为文献[5]的QKF、文献[11]的MCQKF、2.1节的MMCQKF以及2.2节的AMMCQKF。
本节仿真中AMMCQKF的初始核带宽设置为σ1=3和σ2=5,调节参数设置为ϑ=3,混合系数设置为α=0.6;MCQKF的核带宽设置为σ3=2;MMCQKF1的核带宽设置为σ4=2和σ5=3;MMCQKF2核带宽设置为σ6=6和σ7=8;MMCQKF3核带宽设置为σ8=8和σ9=10。
情况1:混和高斯分布的过程噪声和量测噪声
本文考虑四元数过程噪声和量测噪声服从厚尾非高斯噪声分布,即对于∂=1,2有:
图1图2展示了情况1下各滤波算法的位置RMSE,表2列出相应的ARMSE。结果表明,当噪声偏离高斯分布时,QKF算法的估计精度显著下降。基于相关熵策略的估计算法性能均有提升,其中MMCQKF的估计精度优于现有MCQKF,而AMMCQKF进一步提高了估计效果。根据ARMSE计算结果,AMMCQKF的位置估计误差较MCQKF降低了53.2%。
情况2:高斯混合+冲击量测噪声
为进一步评估算法性能,在高斯混合噪声环境下,随机选取采样时刻叠加冲击噪声。冲击噪声幅值在0至10范围内随机选取,其余参数设置与情况1相同。
最后,重点分析混合系数α对AMMCQKF算法估计性能的影响。固定其他参数,只改变混合系数,相关的仿真结果见图5图6
可以看到,当混合系数α≠0、1时,单一核带宽的相关熵的算法估计性能会出现一定程度下降。当α∈(0,1)时,混合系数对所提算法的估计性能影响较小。因此,在没有任何先验知识的情况下,可以简单地将混合系数设为靠近中间的数值,如α=0.6。
进一步在基于松组合的INS/GNSS组合导航应用中验证所提算法的估计效果。本节实验将所提算法与QKF、MCQKF及MMCQKF算法进行对比。实验中,AMMCQKF的初始核带宽为σ1=13和σ2=15,调节参数为ϑ=3,混合系数为α=0.6;MCQKF的核带宽设置为σ3=13;MMCQKF的核带宽设置为σ4=13和σ5=15。
选定北东地坐标系作为导航坐标系,理想四元数姿态微分方程满足:
其中,是载体坐标系b相对于导航坐标系n的理想姿态四元数b坐标系相对于n坐标系的理想角速度在b系下的投影,且是载体坐标系b相对于惯性坐标系i的理想角速度在坐标系b下的投影;是导航坐标系n相对于惯性坐标系i的理想角速度在坐标系n下的投影。
根据惯导系统解算原理,与式(64)类似,可以得到实际姿态四元数微分方程:
其中,b系相对于n系的真实姿态四元数,b系相对于i系的真实角速度在b系下的投影,n系相对于i系的真实角速度在n系下的投影。
由式(64)和式(65)可得,姿态四元数的微分方程为:
定义速度误差为,理想速度Vn可以由式(67)获得:
其中,fn是理想加速度计的输出,e系相对于i系的角速度在n系下的投影;n系相对于e系的角速度在n系下的投影,gnn系下的重力矢量,Vn是惯导系统的解算速度。
忽略二阶误差,可以得到:
其中,是导航坐标系n下加速度计的实际输出,δfb是INS加速度计的输出偏差;为相应位置坐标系下的角速度投影,为不同角速度的误差量,δgn为重力向量误差,为理想系n相对于真实n系的姿态四元数,b为加速度计误差。
状态向量为惯导系统导航参数误差,则组合导航系统的状态方程为[18]
其中,
式(69)和式(70)中,xkk时刻状态向量,Fk|k-1k-1时刻到k时刻的状态转移矩阵(状态转移矩阵完整推导详见文献[18]),wk-1为过程噪声,{ϕNϕEϕD}为INS姿态角误差,{δvNδvEδvD}为INS速度误差,{δpNδpEδpD}为INS位置误差,{εxεyεz}为陀螺仪零偏,{xyz}为加速度计零偏。
测量方程可以表示为[19]
其中,Zk为量测向量,是GNSS和INS位置及速度输出的差值,vk为量测噪声。
本实验基于Groves团队[20]开发的高精度惯性导航工具箱构建仿真场景。设定车辆在60 s内以恒定速度20 m/s沿平面运动,运动轨迹包含两次相反方向的90°转弯,最终生成包含复杂机动特征的惯性导航数据集。实验参数设置如表4所示。
组合导航实验考虑了四元数量测噪声为厚尾非高斯噪声的情况,对于有:
其中,,位置量测噪声标准差psd=2.5m,速度量测噪声标准差vsd=2.5m/s。
图7展示了在厚尾非高斯噪声情况下,不同滤波算法的姿态误差、速度误差和位置误差的RMSE,相应的ARMSE见表5。结果表明,AMMCQKF的北向姿态、北向速度及东向位置误差较MCQKF分别降低70.6%、59.1%和73.1%。该结果AMMCQKF能有效提升组合导航系统在复杂非高斯噪声干扰下的精度。
针对非高斯噪声下的四元数线性系统状态估计算法精度不高的问题,本文基于混合相关熵特性构建递归形式的四元数混合相关熵代价函数,在GHR积分框架下通过固定点迭代推导出四元数混合相关熵卡尔曼滤波算法。在此基础上,采用变分贝叶斯方法自适应更新主导量测噪声方差矩阵,进一步改善算法估计精度。目标跟踪和组合导航实验表明,本文所提出的估计算法相比QKF和MCQKF具有更优的估计性能和自适应能力。
  • 国家自然科学基金项目(62373362; U24A20272; 62273350; 62203448)
  • 中国博士后科学基金(2025T180480)
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2025年第33卷第10期
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doi: 10.13695/j.cnki.12-1222/o3.2025.10.005
  • 接收时间:2024-12-14
  • 首发时间:2026-03-27
  • 出版时间:2025-10-30
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  • 收稿日期:2024-12-14
  • 录用日期:2025-07-11
基金
国家自然科学基金项目(62373362; U24A20272; 62273350; 62203448)
中国博士后科学基金(2025T180480)
作者信息
    中国矿业大学 信息与控制工程学院,徐州 221116

通讯作者:

杨春雨(1979—),男,博士,教授,主要研究方向为工业过程运行控制、物理信息系统和鲁棒控制。
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2种不同金属材料的力学参数

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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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