On the basis of the essential difference of the dynamic model between those active decoys and the real target,the concept of dynamic model match coefficient was proposed.

• 利用自由段有源假目标与实体目标在动力学模型上的本质差异,提出了动力学模型匹配系数的概念,推导出理想条件下的动力学模型匹配系数的解析表达式。