全球定位系统2012，Vol.37Issue(6)：26-32,7.
AGPS服务器子系统的设计与实现
The Design and Implementation of AGPS Server
俞杭华 1张皓2
作者信息
- 1. 上海卫星工程研究所,上海200240
- 2. 上海市东凌公司,上海200082
- 折叠
摘要
Abstract
In AGPS system, an AGPS server is needed to provide the assisted informa- tion to the terminals. A basic AGPS server used for terminal development is implemented in this article. The network frame and interfaces of the AGPS server are analyzed firstly; also, the output message format is specified based on the international protocol and the algorithm. Then the preliminary solution of the server is implemented with the C ;~ program language in the Visual Studio 2005 program environment. To solve the problems occurred, the solution was changed: instead of receiving and processing the assisted information after being reques- ted, in the new design, the assisted information was receiving, processing and transmit in re al time. This final solution implemented serial port and internet communication, also accom- plished point to point and point to multipoint data transmission. The test results indicate that the solution of AGPS server has a high level of stabilization and credibility. The mes- sage format and the realization of software design can assist the terminals effectively.关键词
AGPS/辅助定位服务器/C#/串口通信Key words
AGPS/AGPS server/C#/serial port communication分类
信息技术与安全科学引用本文复制引用
俞杭华,张皓..AGPS服务器子系统的设计与实现[J].全球定位系统,2012,37(6):26-32,7.
