An IMM-based impact point prediction method of ballistic target

被引：0
|
作者：
Chen Y. [1 ]
Wen S.-L. [1 ]
Cheng Z. [1 ]
机构：
[1] Radio Measurement Inst. of the Second Research Academy, China Aerospace Science and Industry Corp.
来源：
Yuhang Xuebao/Journal of Astronautics | 2010年 / 31卷 / 07期
关键词：
Ballistic coefficient estimation; EKF; IMM; Impact point prediction; UF;
D O I：
10.3873/j.issn.1000-1328.2010.07.020
中图分类号：
学科分类号：
摘要：
For the application of impact point predicting technique in ballistic targets early warning, a method for predicting impact point of ballistic target with unknown ballistic coefficients based on the combination of the Interacting Multiple-Model (IMM) and the Unscented Filter (UF) algorithm is presented. Timeliness and accuracy of the impact point prediction are analyzed from aspects of the convergent speed and accuracy of the ballistic coefficient estimation respectively. Compared with the impact point prediction method based on UF or Extended Kalman Filter (EKF), the proposed method based on IMM-UF has stronger adaptability and can predict the impact point more quickly and more accurately. The simulation results prove the validity of the method.
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页码：1825 / 1831
页数：6
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