发明名称 |
EFFICIENT EPHEMERIS CODING |
摘要 |
In one embodiment, a system is provided that is operable to: predict satellite states using historical satellite state data for at least one satellite of a satellite-based positioning system; derive sets of parameters representative of the predicted satellite states; differentially compress the sets parameters into sets of compressed parameters; transmit the sets of compressed parameters to a client device over a first communication channel; uncompress the sets of compressed parameters into sets of recovered parameters; selectively reconstruct at least one reconstructed satellite state in the client device using the sets of recovered parameters; and determine the position of the client device using the at least one reconstructed satellite state along with timing information of satellite data received over a second communication channel.
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申请公布号 |
US2008191936(A1) |
申请公布日期 |
2008.08.14 |
申请号 |
US20070694653 |
申请日期 |
2007.03.30 |
申请人 |
PHATAK MAKARAND S;ZHANG GENGSHENG;WAN MARLENE |
发明人 |
PHATAK MAKARAND S.;ZHANG GENGSHENG;WAN MARLENE |
分类号 |
G01S19/25;H04B7/185 |
主分类号 |
G01S19/25 |
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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