基于结构方程模型的天基信息系统效能评估

针对天基信息系统各项作战能力耦合交互所形成的效能非线性涌现问题，提出基于SEM(structural equation modeling)的作战效能评估模型。从能力需求、系统构成角度出发，分析各分系统内在联系，建立效能评估指标体系；在考虑系统内协同交互的基础上，构建度量效能涌现的线性与非线性SEM；根据对应参数方程建立作战效能评估解析模型。以天基信息支援下的海上方向一体化联合作战为背景，通过MATLAB与STK联合仿真获取效能数据，采用LISREL进行参数估计，获得线性与非线性模型下的评估结果，验证了模型有效性。相较于线性SEM，非线性模型更加贴近作战效能实际。

Effectiveness Evaluation Method of Space-based Information Systems Based on SEM

Aiming at the nonlinear emergence of effectiveness of the coupling and interaction of space-based information system (SIS), an operational effectiveness evaluation (OEE) model based on structural equation modeling (SEM) is proposed. Through the analysis of capacity requirements and system composition, the internal connections of sub-systems are obtained, and the effectiveness evaluation index system is constructed. By considering the synergistic interaction within SIS, the linear and nonlinear SEMs are constructed respectively to evaluate the effectiveness, and the analytical model of OEE is established on the basis of the corresponding parameter equations. With the background of integrated joint operations under the support of space-based information in the maritime direction, the effectiveness data is obtained through the joint simulation of MATLAB and STK. LISREL is used in the parameter estimation, and the evaluation results under linear and nonlinear models are obtained, which verify the validity of SEM model. Compared with the linear SEM, the nonlinear model is more accurate to the actual combat effectiveness.