| 基于半参数建模的弹道目标实时滤波 |
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| 引用本文： | 刘也,余安喜,朱炬波,梁甸农.基于半参数建模的弹道目标实时滤波[J].宇航学报,2011(10). |
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| 作者姓名： | 刘也 余安喜 朱炬波 梁甸农 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院;国防科学技术大学理学院; |
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| 基金项目： | 国家自然科学基金(61072115,60901071); CAST基金(2009-HT-GFKD) |
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| 摘 要： | 设计弹道目标的实时跟踪滤波器时,精确的动态建模和测量系统误差自校准是提高滤波精度的重要手段。基于补偿最小二乘原理和Tikhonov正则化定理,将难于参数化的复杂运动成分和测量系统误差表示为非参数分量,建立了基于半参数化建模的弹道递推模型和实时滤波算法,并详细设计了半参数建模时所需的光滑因子、正则化矩阵和窗口宽度等建模参数的在线选取方法。仿真实验和实际数据的计算结果表明,非参数成分可以有效地补偿状态模型误差,且可在线校准测量系统误差,显著改善弹道估计精度。算法已初步应用于实际飞行任务,其中的递推建模方法和参数选择策略对其它实时滤波器的设计同样有参考价值。
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| 关 键 词： | 弹道目标 半参数建模 实时 滤波 |
Real-Time Filter for Trajectory Target Tracking Based on Semi-Parameter Modeling |
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| LIU Ye,YU An-xi,ZHU Ju-bo,LIANG Dian-nong.Real-Time Filter for Trajectory Target Tracking Based on Semi-Parameter Modeling[J].Journal of Astronautics,2011(10). |
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| Authors: | LIU Ye YU An-xi ZHU Ju-bo LIANG Dian-nong |
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| Institution: | LIU Ye1,YU An-xi1,ZHU Ju-bo2,LIANG Dian-nong1(1.School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China,2.Science College,China) |
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| Abstract: | Accurate dynamic modeling and self-calibration of systematic error are efficient techniques for designing a real-time filter in trajectory target real-time tracking tasks.Based on the compensative least square method and the Tikhonov regularization theorem,non-parametric portions are added to express the complicated dynamics characteristics and the systematic measurement errors.According to these expressions,a real-time filter for trajectory target tracking is developed on the basis of the recursive dynamic... |
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| Keywords: | Trajectory target Semi-parameter modeling Real-time Filter |
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