发明名称 |
Position determination system and method |
摘要 |
An improved position determination system and method are described. The method includes determining that a failure to generate an acceptable GNSS position fix has occurred. In response to determining that the failure to generate an acceptable GNSS position fix has occurred, terrestrial positioning information is accessed which is derived from at least one broadcast signal. A second position fix based upon the terrestrial positioning information is generated.
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申请公布号 |
US7783423(B2) |
申请公布日期 |
2010.08.24 |
申请号 |
US20060495439 |
申请日期 |
2006.07.28 |
申请人 |
TRIMBLE NAVIGATION LIMITED |
发明人 |
VERMA RAJIV KUMAR;CHOW CLIFFORD;JANKY GREGORY T.;WORKMAN DENNIS |
分类号 |
G01C21/26 |
主分类号 |
G01C21/26 |
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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