基于geotools的demo GeoTools is a Java library for manipulating and displaying geographic maps.
基于geotools的demo GeoTools is a Java library for manipulating and displaying geographic maps....
基于geotools的demo GeoTools is a Java library for manipulating and displaying geographic maps....
KML is an XML grammar used to encode and transport representations of geographic data for display in an earth browser. Put simply: KML encodes what to...
當前全球定位系統(Navigation Satellite Timing And Ranging Global Position System,簡稱GPS)廣泛應用于艦船導航,航空航天,地理測繪等領域,特別是移動式定位系統對于目前的城市交通管理有著非常重要的意義。本文分析了當前交通管理中的實際問題,...
Fordecades,microwavelineofsight(LOS)linkshavebeenoneofthebasictechnolo- gies used to build telephone networks. Until 1980, the fast rollout of high ca...
The radio spectrum is one of the most precious resources which must be managed to ensure efficient access for the wireless communication services whic...