发明名称 |
Application of GPS to a railroad navigation system using two satellites and a stored database |
摘要 |
A method for determining the location of a vehicle whose movement is constrained to a route whose location is fixed and known, such as a train. An initial estimate of location is made based upon information contained in a route database based on distance traveled from a reset point. The accuracy of the estimated vehicle location is improved through use of just two global positioning satellites.
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申请公布号 |
US5867122(A) |
申请公布日期 |
1999.02.02 |
申请号 |
US19960733963 |
申请日期 |
1996.10.23 |
申请人 |
HARRIS CORPORATION |
发明人 |
ZAHM, CHARLES;MATHESON, WILLIAM |
分类号 |
G01S5/02;G01S5/14;G01S19/14;G01S19/30;G01S19/34;G01S19/40;G01S19/47;G01S19/49;G01S19/50;(IPC1-7):H04B7/185 |
主分类号 |
G01S5/02 |
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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