Volume 35 Issue 9
Sep.  2009
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Wang Haitao, Ou Jikun, Yuan Yunbinet al. Rapid resolution of GPS ambiguities of satellite formation flying with two-step method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(9): 1130-1133. (in Chinese)
Citation: Wang Haitao, Ou Jikun, Yuan Yunbinet al. Rapid resolution of GPS ambiguities of satellite formation flying with two-step method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(9): 1130-1133. (in Chinese)

Rapid resolution of GPS ambiguities of satellite formation flying with two-step method

  • Received Date: 10 Sep 2008
  • Publish Date: 30 Sep 2009
  • In order to rapidly resolve the carrier ambiguities of satellite formation flying, a two-step method combined with extended Kalman filter (EKF) was proposed. The first step is to fix the wide-lane ambiguities during the state estimation after initializing the filtering with carrier-smoothed-code algorithm and mean value of L6. The second step is to calculate the float double-frequency ambiguities with the method of selecting the parameter weights using the baseline component as a constraint. The simulated case reveales that the baseline accuracy is within 5 cm after the wide-lane ambiguity was solved and the proposed method can correctly resolve the ambiguities within 3 minutes after the filtering initialization with 10 epochs observation.

     

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