发明名称 |
Satellite search methods for improving time to first fix in a GPS receiver. |
摘要 |
<p>An embodiment of the present invention includes a GPS receiver capable of concurrently tracking up to eight GPS satellites. The GPS receiver comprises computer-implemented methods for parallel search, split search and precomputation. The parallel search method causes the apparent Doppler frequency spectrum to be sectioned into several segments and a first GPS satellite signal is searched for in parallel in each of the segments. When the first GPS fix is not found after a predetermined time has expired, a split search is begun. <IMAGE></p> |
申请公布号 |
EP0635728(A1) |
申请公布日期 |
1995.01.25 |
申请号 |
EP19940110580 |
申请日期 |
1994.07.07 |
申请人 |
TRIMBLE NAVIGATION LIMITED |
发明人 |
MCBURNEY, PAUL W.;WEBER, LYNN |
分类号 |
G01S1/00;G01S19/23;G01S19/28;G01S19/29;(IPC1-7):G01S5/14 |
主分类号 |
G01S1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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