GNSS SIGNAL PROCESSING WITH REGIONAL AUGMENTATION POSITIONING |
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| 申请号 | PCT/US2011024743 | 申请日 | 2011-02-14 | 公开(公告)号 | WO2011100680A3 | 公开(公告)日 | 2011-12-01 |
| 申请人 | TRIMBLE NAVIGATION LTD; CHEN XIAOMING; VOLLATH ULRICH; FERGUSON KENDALL; | 发明人 | CHEN XIAOMING; VOLLATH ULRICH; FERGUSON KENDALL; | ||||
| 摘要 | Methods and apparatus for processing of GNSS data derived from multi-frequency code and carrier observations are presented which make available correction data for use by a rover located withm the region, the correction data comprising: the ionospheric delay over the region, the troposphepc delay over the region, the phase-leveled geometric correction per satellite, and the at least one code bias per satellite. In some embodiments the correction data includes an ionospheric phase bias per satellite. Methods and apparatus for determining a precise position of a rover located withm a region are presented in which a GNSS receiver is operated to obtain multi- frequency code and carrier observations and correction data, to create rover corrections from the correction data, and to determine a precise rover position using the rover observations and the rover corrections. The correction data comprises at least one code bias per satellite, a fixed-nature MW bias per satellite and/or values from which a fixed-nature MW bias per satellite is derivable, and an ionospheric delay per satellite for each of multiple regional network stations and/or non- ionospheric corrections. Methods and apparatus for encoding and decoding the correction messages containing correction data are also presented, in which network messages include network elements related to substantially all stations of the network and cluster messages include cluster elements related to subsets of the network. | ||||||
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