发明名称 |
Ambiguity estimation of GNSS signals for three or more carriers |
摘要 |
Methods and apparatus are provided for factorized processing of a set of GNSS signal data derived from signals having at least three carriers. A geometry filter is applied to the set of GNSS signal data using a geometry carrier-phase combination to obtain an array of ambiguity estimates for the geometry carrier-phase combination and associated statistical information. A bank of ionosphere filters is applied to the set of GNSS signal data using a geometry-free ionosphere carrier-phase combination to obtain an array of ambiguity estimates for the ionosphere carrier-phase combination and associated statistical information. At least one bank of Quintessence filters is applied to the set of GNSS signal data using a geometry-free and ionosphere-free carrier-phase combination to obtain an array of ambiguity estimates for the geometry-free and ionosphere-free carrier-phase combination and associated statistical information. At least one code filter is applied to the set of GNSS signal data using a plurality of geometry-free and ionosphere-free code-carrier combinations to obtain an array of ambiguity estimates for the code-carrier combinations and associated statistical information. The resulting arrays are combined to obtain a combined array of ambiguity estimates for all carrier phase observations and associated statistical information.
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申请公布号 |
US2009262013(A1) |
申请公布日期 |
2009.10.22 |
申请号 |
US20080286672 |
申请日期 |
2008.09.30 |
申请人 |
TRIMBLE NAVIGATION LIMITED, A CALIFORNIA CORPORATION |
发明人 |
VOLLATH ULRICH |
分类号 |
G01S19/42;G01S19/32;G01S19/44 |
主分类号 |
G01S19/42 |
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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