发明授权
- 专利标题: Near-real time DGPS network and server system
- 专利标题(中): 近实时DGPS网络和服务器系统
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申请号: US09187690申请日: 1998-11-05
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公开(公告)号: US06229478B1公开(公告)日: 2001-05-08
- 发明人: Zoltan Biacs , John Rogers , Jinye Li
- 申请人: Zoltan Biacs , John Rogers , Jinye Li
- 主分类号: H04B7185
- IPC分类号: H04B7185
摘要:
A method and system for rapidly initializing a rover unit in a networked system. In one embodiment, the present invention acquires rover unit initialization data at a reference station. In one embodiment, the rover unit initialization data is selected from the group consisting of: ephemeris data, almanac data, satellite health data, ionospheric data, UTC and GPS time and approximate rover position information. In the present embodiment, the present invention then communicatively couples the reference station to a server station having memory for storing the rover unit initialization data. After communicatively coupling the reference station to the server station, the present embodiment transfers the rover unit initialization data from the reference station to the server station. The present embodiment then communicatively couples the rover unit to the server station. Next, the present embodiment supplies the rover unit initialization data from the server station to the rover unit. As a result, in the present embodiment, the rover unit is able to be initialized and obtain a first position fix without requiring the rover unit to acquire the initialization data directly from at least one satellite. In another embodiment, the present invention provides a method and system for providing differentially corrected position information to a rover unit in a networked system. In still another embodiment, the present invention provides a method and system for providing both initialization data and differentially corrected position information to a rover unit in a networked system.
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