Development of Web Positioning Services using Cloud and Grid Computing

本研究旨在通过Web提供精准定位服务，促进定位信息的利用，降低精准定位技术和数据的成本。为实现研究目标，1)开发了准天顶卫星系统(QZSS)支持的低成本全球导航卫星系统(GNSS)接收机的译码方案，以提高城市峡谷等天空能见度较低的地方的定位精度。2)进行了实验，验证了所开发的解码程序处理正确。3)实现了定位流程的标准Web服务，以支持各种客户端和申请其他服务。4)在网格/云计算平台上实现了Web服务，以处理大量的进程或用户的大量Web请求。

This research aims at promoting the utilization of positioning information and lowering costs on accurate positioning technologies and data by providing accurate positioning services through the Web. To achieve the research objectives, 1) developed decoding programs for Quasi-Zenith Satellite System (QZSS) supported low-cost Global Navigation Satellite System (GNSS) receiver, which could enhance positioning accuracy in the places with low sky visibilities such as urban canyons. 2) conducted some experiments to verify the developed decoding programs to process properly. 3) implemented standard Web services for positioning processes in order to support various clients and apply for other services. 4) implemented Web service into Grid/ Cloud computing platform to handle heavy amount of processes or a large number of Web requests from the users.