| 改进联邦滤波器在小卫星姿态确定中的应用 |
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| 引用本文： | 曹璐,陈小前.改进联邦滤波器在小卫星姿态确定中的应用[J].飞行器测控学报,2011(1):80-84. |
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| 作者姓名： | 曹璐 陈小前 |
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| 作者单位： | 国防科技大学航天与材料工程学院; |
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| 基金项目： | 国家自然科学基金(50975280) |
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| 摘 要： | 采用微小卫星姿态运动学、动力学方程，以磁强计／太阳敏感器为姿态敏感器进行姿态确定，研究了一种基于融合反馈的改进联邦滤波算法，提出了一种基于观测新息修改的信息分配原则。给出了由四元数描述卫星姿态的误差状态方程，并对观测矢量进行推导，获得了基于角速度的观测方程，丰富了观测模型。仿真结果表明：基于角速度观测方程的引入，增强了观测信息的利用率，进而提高了姿态确定的精度，降低了计算量，保证了可靠性。
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| 关 键 词： | 姿态确定 联邦滤波 角速度 观测方程 |
Application of Improved Federal Filtering in Smallsat Attitude Determination |
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| CAO Lu,CHEN Xiaoqian.Application of Improved Federal Filtering in Smallsat Attitude Determination[J].Journal of Spacecraft TT&C Technology,2011(1):80-84. |
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| Authors: | CAO Lu CHEN Xiaoqian |
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| Institution: | CAO Lu,CHEN Xiaoqian(College of Aerospace and Material Engineering,National University of Defense Technology,Changsha,Hunan Province 410073) |
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| Abstract: | A new smallsat attitude determination algorithm based on fusion-feedback federal filtering and new information distribution principle based on measurement information is presented using smallsat attitude dynamics,magnetometer and sun sensor.Satellite attitude state error equation using quaternion is shown and a new measurement equation about attitude rate is presented based on research on measurement vectors that enriches the measurement model.Simulation results indicate that the use efficiency of measureme... |
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| Keywords: | Attitude Determination Federal Filtering Angular Rate Measurement Equation |
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