一种新的临近空间高超声速目标跟踪算法

A New Tracking Algorithm of Near Space Hypersonic Targets

针对变结构多模型算法(VSMM)在模型集自适应转换过程中,模型集选取容易出现只在单一类型模型中选取的问题,提出一种基于模型集匹配程度检测激活不同类模型的方法。在连续4个滤波周期没有激活不同类模型时,对每个周期所使用模型集与真实运动模式进行匹配程度检测,以此决定是否激活不同类模型。该方法既能有效解决模型转换的缺陷,同时避免了因单个滤波周期内检测判决导致算法切换频繁的问题。仿真结果表明,对比传统算法改进算法能有效提高跟踪性能。

A new tracking algorithm of near space hypersonic target is proposed aimed at the problem that the multiple model algorithms are prone to choose only one single type of models in the process of adaptive conversion based on the degree of model matching.In four non-activated filter period of different models, detections of model matching between real-time model set and real motion model are used to decide wheth-er to activate different classes of models.By so doing,the algorithm effectively solves not only the defects in the model transformation but also the decreasing robustness of the algorithm caused by the j udgment in single filter period.The simulation results show that the improved algorithm can effectively improve the tracking performance compared with the traditional algorithm.