In heavily occluded BeiDou monitoring environments,ambiguity resolution strategies are pivotal in determining positioning accuracy.In light of this,our study comprehensively assessed three strategies,namely Fix-and-hold,Continuous,and Instantaneous,utilizing the RTKLIB tool.Empirical analysis revealed that Fix-and-hold demonstrated superior performance in ambiguity fixation rate,reaching 95.2％.However,in terms of horizontal precision,the Instantaneous strategy stood out with an accuracy of 0.3 cm.For vertical precision,all strategies ranged between 1.03 cm and 1.30 cm,indicating their unsuitability for subsidence monitoring without multipath error correction.This study offers critical insights for selecting appropriate ambiguity resolution strategies in BeiDou monitoring under occluded conditions.
维普
万方数据