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...
当前全球定位系统(Navigation Satellite Timing And Ranging Global Position System,简称GPS)广泛应用于舰船导航,航空航天,地理测绘等领域,特别是移动式定位系统对于目前的城市交通管理有着非常重要的意义。本文分析了当前交通管理中的实际问题,...
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...