发明名称 |
Method for backup dual-frequency navigation during brief periods when measurement data is unavailable on one of two frequencies |
摘要 |
The present invention includes a method for performing backup dual-frequency navigation during a brief period when one of two frequencies relied upon by dual-frequency navigation is unavailable. The method includes synthesizing the code and carrier-phase measurements on the unavailable frequency using the carrier-phase measurements on the retained frequency and a model of ionospheric refraction effects, which is updated when measurements on both frequencies are available.
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申请公布号 |
US2005203702(A1) |
申请公布日期 |
2005.09.15 |
申请号 |
US20040800178 |
申请日期 |
2004.03.12 |
申请人 |
SHARPE RICHARD T.;NELSON FREDERICK W.;PICKETT TERENCE D.;HATCH RONALD R.;YANG YUNCHUN |
发明人 |
SHARPE RICHARD T.;NELSON FREDERICK W.;PICKETT TERENCE D.;HATCH RONALD R.;YANG YUNCHUN |
分类号 |
G01S19/43;G01S1/00;G01S5/02;G01S5/14;G01S19/07;G01S19/11;G01S19/32;G01S19/44;G01S19/48;(IPC1-7):G01C21/26 |
主分类号 |
G01S19/43 |
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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