| 信息分配系数的自适应滤波在GPS/DR组合导航中的应用 |
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| 引用本文： | 张亮,高井祥,李增科.信息分配系数的自适应滤波在GPS/DR组合导航中的应用[J].测绘科学技术学报,2015(1):18-21. |
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| 作者姓名： | 张亮 高井祥 李增科 |
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| 作者单位： | 中国矿业大学 国土环境与灾害监测国家测绘导航局重点实验室 江苏 徐州 221008 |
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| 基金项目： | 国家863计划项目(2013AA12A201)；江苏高校优势学科建设工程项目(SZBF2011￣6￣B35)；新世纪优秀人才支持计划资助( NCET￣13￣1019)。 |
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| 摘 要： | 在组合导航中常采用联合滤波器进行多源传感器的信息融合,其中信息分配系数的取值直接影响着联合滤波器的性能。在详细分析子滤波器状态变量估计协方差阵特点的基础上,文中提出了采用两组信息分配系数的自适应联合滤波模型,并将设计的自适应联合滤波模型应用于车载GPS/DR组合导航中。仿真实验表明,导航的位置精度提高约为40%;速度精度提高约为10%。同时也提高了组合系统的容错性和可靠性。
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| 关 键 词： | 全球定位系统 船位推算 组合导航 卡尔曼滤波 自适应算法 |
Application of Adaptive Filter Based on Information Distribution Coefficient to GPS/DR Integrated Navigation |
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| ZHANG Liang,GAO Jingxiang,LI Zengke.Application of Adaptive Filter Based on Information Distribution Coefficient to GPS/DR Integrated Navigation[J].Journal of Zhengzhou Institute of Surveying and Mapping,2015(1):18-21. |
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| Authors: | ZHANG Liang GAO Jingxiang LI Zengke |
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| Institution: | ZHANG Liang;GAO Jingxiang;LI Zengke;Key Laboratory for Land Environment and Disaster Monitoring of SBSM,China University of Mining & Technology; |
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| Abstract: | In the integrated navigation the federated filter is often used to fuse the information of multi￣source and the values of the distribution coefficient affect the performance of the fede￣rated filter directly. In this paper by an￣alyzing the characteristics of the covariance matrix of state variable of sub filter a adaptive filtering model that has two groups of information dis￣tribution coefficient is presented and the design model is used in the GPS/DR inte￣grated navigation A simulation experiment shows that the location accuracy increases forty percent and velocity accuracy increases ten percent. In addition the fault tolerance and reliability of the combined system are improved. |
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| Keywords: | GPS DR Dead Reckoning integrated navigation Kalman filter adaptive algorithm |
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