Direction Relation Between High Order Fuzzy Geographical Objects

There are lots of fuzzy phenomena in real world,and scale effect exists in modeling those phenomena,so high order vagueness exists in geographical world.The modeling of high order fuzzy object and their direction relation is complex and difficult.The direction representation of high order fuzzy geographical object is analyzed based on interval Type II fuzzy set.And the direction space is used to describe the direction membership value,and the divided direction space is used to replace initial direction space.The analysis method of direction relation between high order fuzzy objects is studied,and membership value error representations of direction space and direction relation are proposed.