利用粗糙集理论评估卫星导航系统效能  

On effectiveness evaluation of satellite navigation system based on rough set theory

作　　者：董成喜[1] 吴德伟[1] 何晶[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《电光与控制》2008年第11期84-87,共4页Electronics Optics & Control

基　　金：军队科研基金资助项目(KJE06140)

摘　　要：为了对卫星导航系统进行效能评估,提出了一种新的效能评估方法—粗糙集理论。在基于粗糙集理论的属性约简能力基础上,建立了卫星导航系统评估指标体系,确立了系统评价决策表和权重计算方法。通过对卫星导航系统实际测试数据的评估分析,得出了约简后的属性重要度和指标权重,与通常使用的层次分析法所得评估结果一致。表明利用粗糙集理论进行效能评估,可以克服传统方法确定权重系数的主观性,使得评估结果更具合理性和科学性。Rough set theory, a new effectiveness evaluation theory, is used to evaluate the effectiveness of satellite navigation systems. Based on attribute reduction capability of rough set theory, effectiveness evaluation index system is established for satellite navigation system, and evaluation decision sheet and weight calculation method are also confirmed. Through evaluation analysis of practical test data, we obtained the attribute importance degrees and index weights after reduction, which are consistent with the result of commonly-used AHP. It shows that rough set theory can overcome the subjectivity of traditional method in the determination of weight coefficient, which makes evaluation result more reasonable and scientific .

关 键 词：粗糙集理论 卫星导航系统 指标体系 效能评估 

分 类 号：V474.2[航空宇航科学与技术—飞行器设计] E917[军事]