Databases of move objects are important for air traffic control,ground traffic,and battlefield configurations.We introduce the(historical and spatial)range close-pair query for moving objects an important problem for such databases.The purpose of a range close-pair query for moving objects is to find pairs of objects that were closer than ∈during time interval I and winthin spatial range R,where ∈,I and R are user-specified parameters.
動作物體的數(shù)據(jù)庫對空中交通管制,土地的交通和戰(zhàn)場結構是重要的.因為移動為如此的數(shù)據(jù)庫反對一個重要的問題,我們介紹范圍結束-雙的疑問.移動物體的范圍結束-雙疑問的目的將找在第一時間間隔和 ∈、我是使用者指定的叁數(shù)的空間的范圍 R 期間比∈靠近的物體的雙.