| 引用本文: | 刘也,朱炬波,梁甸农.基于双重酉滤波的再入目标实时跟踪.[J].国防科技大学学报,2011,33(1):81-86.[点击复制] |
| LIU Ye,ZHU Jubo,LIANG Diannong.Dual Unscented Filter for Reentry Target Real-time Tracking[J].Journal of National University of Defense Technology,2011,33(1):81-86[点击复制] |
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| 基于双重酉滤波的再入目标实时跟踪 |
| 刘也1, 朱炬波2, 梁甸农1 |
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(1.国防科技大学 电子科学与工程学院，湖南 长沙 410073;2.国防科技大学 理学院，湖南 长沙 410073)
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| 摘要: |
| 适当的运动模型和估计方法是提高再入目标跟踪性能的关键。选择机动再入动力学模型，将再入目标跟踪问题转化为状态和参数的联合估计问题，并利用
试验数据分析了再入模型状态和参数的相关性。针对原始双重酉滤波算法的确定性系统输入假设造成信息损失的局限性，提出了一种基于随机性系统输入假设的改进双重酉滤波算法，并从理论上分析了该算法的估计精度。仿真实验验证了新算法的适用性、估计精度和不完全处理能力。 |
| 关键词: 再入 双重滤波 酉滤波 阻力参数 |
| DOI： |
| 投稿日期：2010-07-12 |
| 基金项目:国家自然科学基金资助项目(61072115，60901071)；CAST基金资助项目(2009-HT-GFKD) |
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| Dual Unscented Filter for Reentry Target Real-time Tracking |
| LIU Ye1, ZHU Jubo2, LIANG Diannong1 |
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(1.College of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, China;2.College of Science, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| Proper dynamic models and estimation methods are crucial factors to achieve a nice tracking performance for a reentry target. First, the dynamic model of maneuver reentry vehicle was chosen for reentry target tracking, and the tracking problem was equivalent to the simultaneous estimation of the state and the parameter. Then, the relativity of the state and the parameter were discussed by numerical examination. Next, for the information lost caused by the assumption of a deterministic input vector in the original dual unscented filter, an improved dual unscented filter based on a random input vector was proposed, and a detail accuracy analysis was achieved in theory. Finally, the accuracy, applicability and ability for processing incomplete data were validated by simulations. |
| Keywords: reentry the dual filter the unscented filter drag parameter |
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