基于突变理论与梯形模糊数的海洋视景仿真逼真度综合评定  

Comprehensive fidelity evaluation for visual simulation based on catastrophe theory and trapezoidal fuzzy numbers

作　　者：梁洪涛[1] 康凤举[1] 翟楠楠 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《江苏大学学报（自然科学版）》2014年第1期50-55,共6页Journal of Jiangsu University：Natural Science Edition

基　　金：船舶预研支撑技术基金资助项目(11J4.1.1)

摘　　要：针对海洋视景仿真逼真度评定难以兼顾模糊性和主观性的问题,提出了一种基于突变理论和梯形模糊数的分析与评判方法.从视景仿真所遵循原则和海洋战场环境特点出发,建立了一套定量指标为主、定性指标为辅的四级海洋视景仿真逼真度指标评价体系;构建了基于梯形模糊数的突变理论动态综合决策模型,利用梯形模糊数对低层指标初始化和突变理论归一化公式机理本身来确定各指标对各目标重要性的确定性量化,并通过对3个典型海洋战场视景仿真完成系统决策评定.试验结果表明:该模型能够合理和正确地解决视景仿真逼真度评定问题,为大型复杂系统的多属性决策提供了一个新视角.To solve the difficulty of giving consideration to fuzziness and subjectivity in fidelity evaluation of ocean visual simulation, a novel method was proposed based on catastrophe theory and trapezoidal fu zzy numbers. According to the establishment principles of visual simulation and marine battlefield envi ronment characteristics, a set of quantitative and qualitative indicators with 4 level were established. The catastrophe theory dynamic comprehensive decisionmaking model was proposed based on trapezoidal fuzzy numbers. The trapezoidal fuzzy numbers were used to initialize the lowestlevel indicators, and the normalization formula of catastrophe theory was used to determine the weight of the corresponding indica tor. The proposed model was applied in three typical ocean battlefield simulation system. The experimen tal results show that the ocean visual simulation fidelity assessment can be reasonably and correctly rea lized by the proposed method to provide a new perspective for multiple attribute decisionmaking in large and complex systems.

关 键 词：海洋视景仿真 突变理论 梯形模糊数 逼真度 综合评判 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]