A method of fixing integer ambiguity between base stations in network RTK with wide-lane ambiguity restriction
LV Weica · Journal of China University of Mining and Technology · 2014
By analyzing the geometrical relationship between wide-lane ambiguity,geo-free model and ionosphere-free model,a method of fixing integer ambiguity between base stations in network RTK and the corresponding test method are presented.The ambiguities of wide-lane are fixed through MW-combination first and regarded as truth value,and then the floating resolution of the ambiguities of L1 and L2is gotten by adjustment calculation combined with the models of geo-free and ionosphere-free at single epoch.After that the floating ambiguities are rounded to the nearest integers directly.Finally,the correctness of ambiguities is checked through the short and long GPS/BDS baselines.The result indicates that this method can fix ambiguities of network RTK fast and steadily.Additionally,it is effective to both short and long baselines.