Improvement of Cone-Shaped Spatial Direction-Relation Model

An improved cone-shaped model is given in order to improve the old cone-shaped model.The new improved spatial direction-relation makes use of the ideas of both cone-shape model and direction-relation matrix model,which inherits their merits at same time,especially heightens the ability greately to express the spatial direction-relation between spatial objects effectively under the muilti-sacle circumstance,and the muilti-scale compatibility is considered.