Invention Grant
US08035552B2 Distance dependant error mitigation in real-time kinematic (RTK) positioning
有权
实时运动学(RTK)定位中的距离相关误差减轻
- Patent Title: Distance dependant error mitigation in real-time kinematic (RTK) positioning
- Patent Title (中): 实时运动学(RTK)定位中的距离相关误差减轻
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Application No.: US12119451Application Date: 2008-05-12
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Publication No.: US08035552B2Publication Date: 2011-10-11
- Inventor: Liwen L. Dai , Daniel J. Eslinger , Richard T. Sharpe , Ronald R. Hatch
- Applicant: Liwen L. Dai , Daniel J. Eslinger , Richard T. Sharpe , Ronald R. Hatch
- Applicant Address: US CA Torrance
- Assignee: Navcom Technology, Inc.
- Current Assignee: Navcom Technology, Inc.
- Current Assignee Address: US CA Torrance
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: G01S19/40
- IPC: G01S19/40

Abstract:
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.
Public/Granted literature
- US20090135056A1 Distance dependant error mitigation in real-time kinematic (RTK) positioning Public/Granted day:2009-05-28
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