AR策略对强遮挡北斗监测站精度影响研究

Study on the Impact of AR Strategies on the Accuracy of BeiDou Monitoring Stations under Strong Occlusion

在高度遮挡环境下的北斗监测站,模糊度解算策略是决定位置监测精度的关键因素。针对此,本研究利用RTKLIB工具对Fix-and-hold、Continuous和Instantaneous三种模糊度解算策略进行了深入评估。经实验分析,Fix-and-hold策略在模糊度固定率上表现最佳,达到95.2%。不过,从水平精度考虑,Instantaneous策略以0.3 cm的精度领先。对于高程精度,各策略精度介于1.03 cm至1.30 cm,这意味着在未经多路径误差校正的情况下,它们不适于沉降监测应用。本研究为在遮挡环境下的北斗监测中选择适当的模糊度解算策略提供了重要参考。

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.