发明名称 |
Distance dependent error mitigation in real-time kinematic (RTK) positioning |
摘要 |
A method for mitigating atmospheric errors in code and carrier phase measurements based on signals received from a plurality of satellites in a global navigation satellite system is disclosed. A residual tropospheric delay and a plurality of residual ionospheric delays are modeled as states in a Kalman filter. The state update functions of the Kalman filter include at least one baseline distance dependant factor, wherein the baseline distance is the distance between a reference receiver and a mobile receiver. A plurality of ambiguity values are modeled as states in the Kalman filter. The state update function of the Kalman filter for the ambiguity states includes a dynamic noise factor. An estimated position of mobile receiver is updated in accordance with the residual tropospheric delay, the plurality of residual ionospheric delays and/or the plurality of ambiguity values. |
申请公布号 |
US8242953(B2) |
申请公布日期 |
2012.08.14 |
申请号 |
US201113226311 |
申请日期 |
2011.09.06 |
申请人 |
DAI LIWEN L.;ESLINGER DANIEL J.;SHARPE RICHARD T.;HATCH RONALD R.;NAVCOM TECHNOLOGY, INC. |
发明人 |
DAI LIWEN L.;ESLINGER DANIEL J.;SHARPE RICHARD T.;HATCH RONALD R. |
分类号 |
G01S19/32;G01S19/41;G01S5/14;G01S19/43;G01S19/44;G01S19/48 |
主分类号 |
G01S19/32 |
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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