基于五阶球面单纯形-径向容积准则的多终端一致分布式滤波定轨算法

发布时间：2018-05-12 07:35

本文选题：手持终端 + 五阶球面单纯形-径向准则　；参考：《电子与信息学报》2017年03期

【摘要】：为了提高多手持终端信息融合实时定轨的精度和系统容错性,该文提出一种基于五阶球面单纯形-径向容积准则的多终端一致分布式容积信息滤波(CD-SSRCIF)定轨算法。分别使用n维单纯形顶点和矩匹配法计算球面和径向积分,得到适用于系统状态维数n￡7时的五阶球面单纯形-径向容积准则。利用统计线性误差传播方法将此五阶容积准则嵌入扩展信息滤波器,将集中式变量展开得到多源集中式五阶容积信息滤波器。进而,利用平均一致性算法对集中式滤波中多源信息累加进行分布式等价表示,构成上下两层级联滤波器,下层滤波器执行平均一致性算法融合邻居节点的信息,输出虚拟量测值。上层滤波器利用该量测值执行五阶容积信息滤波,实时输出轨道状态估计值。仿真实验结果表明,五阶CD-SSRCIF算法无需信息融合中心,且具有比三阶算法更高的定轨精度。
[Abstract]:In order to improve the accuracy and fault tolerance of real-time orbit determination based on multi-terminal information fusion, a multi-terminal uniform distributed volumetric information filtering (CD-SSRCIF-CD-SSRCIF-based) orbit determination algorithm based on the fifth order spherical simplex radial volume criterion is proposed in this paper. The spherical and radial integrals are calculated by the matching method of vertices and moments of n-dimensional simplex, respectively, and the five-order spherical simplex radial volume criterion is obtained for the system state dimension n _ 7. Using the statistical linear error propagation method, the fifth order volumetric criterion is embedded in the extended information filter, and the centralized variable is expanded to obtain the multi-source centralized fifth order volume information filter. Furthermore, using the average consistency algorithm, the multi-source information in the centralized filtering is represented by distributed equivalent method, and the upper and lower layer cascaded filters are constructed, and the lower layer filters perform the average consistency algorithm to fuse the information of the neighbor nodes. Output virtual measurements. The upper filter uses the measured value to perform the fifth order volumetric information filtering and outputs the orbit state estimation in real time. The simulation results show that the fifth order CD-SSRCIF algorithm does not need the information fusion center and has higher orbit determination accuracy than the third order algorithm.
【作者单位】：装备学院研究生院;装备学院光电装备系;西安卫星测控中心;
【基金】：国家高技术研究发展计划(2015AA7026085)~~
【分类号】：TN713

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