摘要
基于(Web)XML空间数据互操作规范的方式是目前实现Internet上空间信息共享和互操作的有效途径。Web要素服务是OGC提出的基于(Web)XML空间数据互操作规范中功能最为强大、应用前景最好的一种数据服务。Web要素服务通过GML传递空间数据,但是由于GML描述方式冗余度大,生成和传输GML的时间长,在现有的网络带宽下难以令用户满意。本文介绍从GML模式定义、数据压缩和客户端生成内存结构3个方面提出优化Web要素服务的方法。
The method based on (Web) XML standards is the best method to implement spatial information sharing and interoperability through the Internet at present time. Web Feature Service is the most powerful spatial data service based on (Web) XML provided by OGC. Web Feature Service transfers data through GML, but GML has a lot of redundancy, also building and transmission GML is time-consuming, it is difficult to satisfy user under current bandwidth. This paper discusses the methods of improving service capability of the Web Feature Service from following aspects: GML schema definition, data compress and memory structure constitution in the client side.
出处
《测绘学报》
EI
CSCD
北大核心
2005年第2期168-174,共7页
Acta Geodaetica et Cartographica Sinica
基金
国家"863计划"资助项目(2002AA131030)
