| UPF滤波参数对航天器天文导航性能的影响 |
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| 引用本文： | 宁晓琳,房建成,马辛.UPF滤波参数对航天器天文导航性能的影响[J].中国空间科学技术,2010,30(3):1. |
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| 作者姓名： | 宁晓琳 房建成 马辛 |
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| 作者单位： | 北京航空航天大学仪器科学与光电工程学院; |
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| 摘 要： | 对航天器天文导航这种模型非线性、噪声非高斯的系统,离散粒子滤波(UPF)具有比扩展卡尔曼滤波(EKF)、离散卡尔曼滤波(UKF)更高的精度。在基于UPF的航天器天文导航系统中,UPF滤波参数τ,Q和R以及粒子个数和重采样方法是影响系统导航精度的主要因素。文章通过计算机仿真系统研究了上述UPF滤波影响因素对航天器自主天文导航系统性能的影响,并对结果进行了分析。该文可为基于UPF的航天器自主天文导航系统的参数设置提供参考和依据。
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| 关 键 词： | 天文导航 离散粒子滤波 滤波参数航天器 |
Impact of UPF Filter Parameters on Spacecraft Celestial Navigation Performance |
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| Ning Xiaolin,Fang Jiancheng,Ma Xin.Impact of UPF Filter Parameters on Spacecraft Celestial Navigation Performance[J].Chinese Space Science and Technology,2010,30(3):1. |
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| Authors: | Ning Xiaolin Fang Jiancheng Ma Xin |
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| Abstract: | In spacecraft celestial navigation system,the state and measurement models are strongly nonlinear,and noises are non-Gaussian.UPF shows a better navigation performance compared with EKF and UKF.In the celestial navigation system based on UPF,parameters τ,Q,R,particle number and resampling scheme in the UPF have great impact on the navigation performance.The impacts of these parameters on navigation performance of spacecraft autonomous celestial navigation system were studied by some simulations.The conclusions are useful for the design of autonomous celestial navigation system based on UPF. |
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