发明名称 |
ОСЛАБЛЕНИЕ ФАЗОВОЙ МНОГОЛУЧЕВОСТИ |
摘要 |
A system and method for mitigating a multi-path-induced error in a global navigation satellite system (GNSS) is described. In one embodiment of the method, a composite signal is received. The composite signal includes a band-limited direct-path signal and at least one band-limited multi-path signal that are each modulated with periodic phase reversals. The composite signal is measured as a function of time during a time interval having at least one of the periodic phase reversals. A phase error phi<SUB>epsilon</SUB> between the composite signal and the direct-path signal due to the multi-path signal is determined using the measured composite signal as a function of time and a pre-determined filter characteristic corresponding to a filter used to band limit the direct-path signal and the multi-path signal. The phase error phi<SUB>epsilon</SUB> in a navigation computation is corrected. |
申请公布号 |
RU2007118506(A) |
申请公布日期 |
2008.11.27 |
申请号 |
RU20070118506 |
申请日期 |
2005.09.22 |
申请人 |
НАВКОМ ТЕКНОЛОДЖИ, ИНК. (US) |
发明人 |
КИГАН Ричард Дж. (US);НАЙТ Юджин Дж. (US) |
分类号 |
G01S1/00;G01S19/22;G01S19/30 |
主分类号 |
G01S1/00 |
代理机构 |
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