发明名称 |
Method and system for multipath detection |
摘要 |
A navigation system including a GPS receiver; a variable directivity antenna capable of forming a null point in at least one direction; a null point setting unit for setting the null point of the variable directivity antenna in the direction of a GPS satellite that can perform positioning; and a multipath determination unit for determining whether a reception signal from the variable directivity antenna is in a multipath state in accordance with the reception signal.
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申请公布号 |
US2005195108(A1) |
申请公布日期 |
2005.09.08 |
申请号 |
US20050029268 |
申请日期 |
2005.01.05 |
申请人 |
OBATA KIJURO |
发明人 |
OBATA KIJURO |
分类号 |
G01C21/00;G01S1/00;G01S19/22;G01S19/25;G01S19/36;G08G1/0969;H01Q3/26;(IPC1-7):G01S1/00;H04B7/185;H01Q3/22 |
主分类号 |
G01C21/00 |
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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