针对传统统计特征在抗质心干扰和箔条云建模上的困难,采用基于相空间重构的GP算法和Rosenstein法计算了箔条云时域回波序列的关联维和Lyapunov指数,分析了两类目标在各项参数上的差别及其原因,得出箔条云和包含船舶的箔条云时域回波具有混沌特性,不同目标的混沌参数表现出一定的聚类特征.分析表明:所有计算结果都有明确的物理意义,与逻辑推断相符,且满足信噪比要求,因此计算结果是可信的.%In order to overcome the disadvantages of traditional statistical characteristics in EW measures against centroid jamming and chaff cloud modeling,by adopting phase reconstruction based GP algorithm and Rosenstein algorithm,the correlation dimensions and largest Lyapunov exponents of the echo of chaff clouds were calculated,the difference between the characteristics was analyzed,and the probable reasons were proposed.The results of the calculations proveed that the two type targets was chaotic,and the chaotic parameters of different targets suggested a certain cluster feature.The analysis indicated that all results had physical meaning,logically right,and met the SNR requirement,thus being receivable.
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