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.
�����. ��ز����в��ʶ���������ⷨ�о� .�人:�й���ѧԺ��������������о���,2003 Wang Zhenjie. Research on the regularization solutions of Ill-posed problems in geodesy . Wuhan: Institute of Geodesy and Geophysics,Chinese Academy of Sciences, 2003(in Chinese)