不同卫星截止高度角的单点定位分析

Study on Single Point Positioning at Different Satellite Cut off Angles

为了研究不同卫星截止高度角对精密单点定位的影响,利用唐山市曹妃甸区华北理工大学同一时段不同卫星截止高度角的实测数据进行单点定位和静态差分数据的处理,并进行精度分析与对比。结果表明,高度角为10°~20°时定位精度最佳,E方向的误差为5 cm左右,N方向和U方向的误差为4 cm左右,达到了预期的精度,但不同卫星截止高度角对单点定位结果大致没有影响。

To investigate the effect of different satellite cutoff height angles on precision single-point localization,different solutions were designed.The measured data of Caofeidian District of Tangshan City were processed for single-point positioning and static difference data,and used for precision analysis and comparison.The results show that the best localization accuracy at height angle 10°-20°,about 5 cm in E direction and 4 cm in N and U direction,it achieves the expected accuracy,but different satellite cut-off height angles has almost no effect on the single-point localization results.