中文摘要：

为解决水下地形导航数据库中单一地形特征参数描述地形匹配特征不全面的问题,在Fuzzy模糊决策应用的基础上,提出基于Vague集模糊推理的地形数据库匹配性的综合评价方法.Vague集用真隶属度函数和假隶属度函数来界定地形导航数据库的地形特征对导航匹配特性的影响,并依照加权记分函数法求得各匹配区的综合评价值.仿真结果表明,综合评价值越大的地形区域,匹配误差越小,即匹配性能越优.说明Vague集评价法能有效选择最优匹配区,能一定程度上解决单一地形图特征评价不全面的问题.

英文摘要：

To overcome the problems of not describing terrain matching characteristics totally with a single terrain feature parameter in underwater navigation terrain database, an evaluation method named Vague set is proposed to describe the terrain suitability comprehensively based on the fuzzy decision making （FDM） method. The membership functions and non-membership functions of the Vague set are used to define the influence of the terrain map characteristics parameters on matching suitability, and comprehensive evaluation values of matching areas are obtained by the weighted score function method. Simulation results demonstrate that the terrain map suitability is positively proportional to the comprehensive evaluation value, while the matching position error is negatively proportional to the comprehensive evaluation value of the matching area. The Vague set can choose the optimal matching areaeffectively, and solve the problem that the single topographic map featurecannot evaluate suitability comprehensively.