多元、动态区域电磁环境建模仿真方法研究

Complex Electromagnetic Environment (EME) is a hot topic and major strategic issue affecting social development. Aiming at the characteristics of multivariate, dynamic and uncertainty in regional EME, firstly, the dynamic characteristics of EME is to be studied with Fractal Theory and Mathematical Morphology. Secondly, we construct a reliable EME simulation model, which is based on the Ontology Theory, active element modeling and Wavelet Neural Network. Finally, the multi-loop cooperation exploratory simulation frame based on Data Farming Theory is to be proposed to reveal the relationship between EME factors and electronic and information system. In this frame, the method is investigated to achieve the rapid clustering of high-dimensional, multi-variable EME parameters space by integrated applying of the correlation principle and Orthogonal Function Theory. This project has significance in thoroughly cognizing，predicting and evaluating of EME, avoiding and rationally utilizing EME, and supporting the analysis of the Electromagnetic Environment Effect. In this project, the research contents include: the method of description for regional EME characteristics, the approach of simulation model construction on multivariate structures of noumenon and active element modeling, the technique exploratory simulation for EME interference effects based on multi-loop cooperation, and the consistency verification of simulation model by sampling signals.

复杂电磁环境已成为影响社会发展的一个重大战略问题，是目前的研究热点。本项目针对区域电磁环境多元、动态、不确定性特点，拟利用分形理论与数学形态学方法，研究区域电磁环境的动态性。综合应用本体论、主动元建模与小波神经网络方法，构建高置信度电磁环境仿真模型。利用数据耕耘理论，研究多环协作的电磁环境探索性仿真框架；利用相关性原理与函数正交理论研究高维度、多参数电磁环境空间快速聚焦方法，有效揭示电磁环境对电子与信息系统的干扰效应机理。上述研究为深入认知、预测及评估区域电磁环境态势，规避与利用电磁环境，分析复杂电磁环境对电子与信息系统的综合效应机理提供技术支撑，具有重要的理论意义。研究内容为：(1)区域电磁环境综合特性表征方法；(2)多元结构本体元模型的电磁环境建模方法；(3)多环协作的电磁环境干扰效应探索性仿真方法；(4)利用实测信号的多层次仿真模型一致性验证方法。

本项目首先开展了电磁环境综合特征研究，通过电磁环境场景设定，可仿真分析任一想定区域的电磁环境综合特征分布；基于分形理论的电磁环境综合动态特性表征方法研究，求解了电磁环境中任一接收点处电磁合成信号的关联维数，利用区域电磁环境中接收点集合的关联维数表征区域电磁环境的整体动态特性；基于多元结构本体的电磁环境概念模型研究，建立了区域电磁环境概念模型；开展多分辨率主动元建模方法研究，建立了满足分辨率要求的元模型；神经网络模型修正方法研究，利用小波神经网络对模型进行修正；基于数据耕耘的探索性仿真框架设计研究，提出了多环协作的电磁环境探索性仿真方法；开展基于数据耕耘的探索性仿真研究，探索了电磁环境不确定性对无人机数据链的干扰效应与规律；探索性仿真结果分析研究，利用基于数据耕耘的多环协作进行探索性仿真，可得到多场景下的电子信息系统性能仿真结果；开展多层次仿真模型一致性验证方法研究，综合分析验证了模型的统计一致性与关联一致性；仿真模型验证，采用了实验测量比对、动态补偿方法，保证采集信号的准确度，满足采集信号的精度要求。