摘要
针对战场电磁环境复杂度量化评估的问题,提出一种机载航空电子系统面临电磁环境复杂度的量化评估方法。通过对构成航空电子系统的各分系统、设备工作效能的评估,实现对航空电子系统面临电磁环境复杂度的量化评估。将分系统、设备的电磁敏感度测试数据作为评估对象;将模糊数学中的多层模糊综合评判理论作为评估流程;用DempsterShafer证据理论法对电磁敏感度测试中位于安全裕度曲线和敏感度曲线之间的干扰量值进行处理;将国家军用标准GJB72A—2002《电磁干扰和电磁兼容性术语》中分系统及设备的关键性类别的规定作为权重确定的依据。在考虑无法判定工作状态区域上的数据处理中,与传统的电磁环境复杂度评估方法相比效果改善了15.7%,为解决战场电磁环境复杂性评估问题提供了一种新思路。
For the difficulty of quantitativeassessment of a battlefield electromagnetic environment,a method to evaluate the complexity of electromagnetic environments in avionic systems is proposed in this paper.Through the evaluation of the operating efficiency of each subsystem and devicewhich constitute the avionic system,the complexity of the electromagnetic environment in theavionic system is determined.The sensitivity test data of the subsystems and equipment are regarded as the evaluation object; thecomprehensivemultilevel fuzzy evaluation method is used inthe evaluation process; the Dempster-Shafer evidence theory is applied to deal with the assessment data,which avoids the impact of ＂uncertainty＂ factors on the resuits of the assessment,and makes the results more accurate and credible.The determination of weight isbasedon the ＂terminology for electromagnetic interference and electromagnetic compatibility＂ of GJB 72A—2002.In dealing with uncertain data,the result is improved by 15.7％ as compared with previous methods.This method provides a new way to evaluate the complexity of abattlefield electromagnetic environment.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2014年第2期487-496,共10页
Acta Aeronautica et Astronautica Sinica
基金
国家自然科学基金(61371007)
航空科学基金(20112051017)~~
关键词
电磁环境
航空电子系统
多层模糊综合评判
安全裕度
D-S证据理论
electromagnetic environment
avionics system
comprehensive multilevel fuzzy evaluation
safety margin
Dempster-Shafer evidence theory
