跟踪弹道导弹全阶段的可变多模型方法  

A New Algorithm with Variable-Structure Multiple Model for Tracking Ballistic Missile at Entire Flight Stages

作　　者：钮俊清[1] 单奇[1] 任清安[1] 刘军伟[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《雷达科学与技术》2011年第3期224-231,共8页Radar Science and Technology

摘　　要：弹道导弹跟踪是弹道导弹防御系统中最核心的问题,然而传统的基于单运动模型的跟踪方法不能适用于跟踪弹道导弹的所有阶段。提出一种新的可变多模型(VUF)的跟踪方法,该方法具有以下的优势:采用多模型的结构,适用于跟踪任意阶段的弹道导弹;可变模型集的特征有效地提高了精度,同时降低了计算复杂度;采用UKF滤波方法具有更好的跟踪精度。仿真实验中设计了三个实验场景,与传统的EKF算法相比该方法明显地提高了跟踪的精度。特别是在弹道目标飞行阶段转换时,具有一定的识别能力和更鲁棒的跟踪性能。In missile defense system,tracking ballistic target is the most key problem.However,the traditional method based on single-state model is not suitable for tracking ballistic target at all flight stages.The paper addresses a new tracking algorithm with variable-structure multiple model.It has several advantages.It is capable of tracking ballistic target at entire flight stages due to multiple model.Based on variable-structure,it improves tracking precision effectively and makes computational complexity lower.It has better tracking precision by using unscented Kalman filtering.Three simulation scenarios had been designed.Compared to the traditional EKF algorithm it has better estimation performance.Especially,it has some identification ability and more robust tracking performance during the switch phase of ballistic target.

关 键 词：弹道导弹跟踪 可变多模型 交互多模型 不敏滤波 

分 类 号：TN957[电子电信—信号与信息处理]