发明名称 |
Method and apparatus for fast acquisition and low SNR tracking in satellite positioning system receivers |
摘要 |
A satellite positioning system (SATPS) receiver has a mix of standard and enhanced digital channel processors. The standard digital channel processors perform continuous tracking. During a low SNR and/or fast acquisition mode, the enhanced digital channel processor accumulates samples of a SATPS signal that are identically positioned within corresponding PRN code repetition periods, and plays back the stored accumulated values of the samples in an integration period to a correlation section for correlation with a locally generated PRN code.
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申请公布号 |
US6888879(B1) |
申请公布日期 |
2005.05.03 |
申请号 |
US20000512243 |
申请日期 |
2000.02.24 |
申请人 |
TRIMBLE NAVIGATION LIMITED |
发明人 |
LENNEN GARY R. |
分类号 |
G01S1/00;G01S19/29;G01S19/30;H04B1/707;H04M17/00;(IPC1-7):H04M17/00 |
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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