发明名称 |
Robust Low-Frequency Spread-Spectrum Navigation System |
摘要 |
Methods and apparatus are described for a navigation system. A process includes providing a plurality of transmitters distributed throughout a desired coverage area; locking the plurality of transmitters to a common timing reference; transmitting a signal from each of the plurality of transmitters. An apparatus includes a plurality of transmitters distributed throughout a desired coverage area; wherein each of the plurality of transmitters comprises a packet generator; and wherein the plurality of transmitters are locked to a common timing reference.
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申请公布号 |
US2010103980(A1) |
申请公布日期 |
2010.04.29 |
申请号 |
US20090609554 |
申请日期 |
2009.10.30 |
申请人 |
SMITH STEPHEN F;MOORE JAMES A |
发明人 |
SMITH STEPHEN F.;MOORE JAMES A. |
分类号 |
H04B1/69 |
主分类号 |
H04B1/69 |
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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