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- 2018
北斗三频精密单点定位模型比较及定位性能分析
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Abstract:
在Trip软件的基础上实现了北斗三频无电离层两两组合、三频消电离层组合和三频非组合精密单点定位（precise point positioning，PPP）算法。利用12个陆态网观测站的北斗三频观测数据对3种三频PPP定位模型及传统的双频无电离层组合PPP模型的定位性能进行分析。试验结果表明，对大多数测站，3种三频PPP模型静态定位精度水平方向优于1 cm，高程方向优于2 cm，动态定位精度水平方向优于4 cm，高程方向优于6 cm；3种三频PPP模型静态收敛时间约为120 min，动态收敛时间约180 min；相比于传统的双频PPP模型，三频PPP模型的定位精度有所提高，其中，三频非组合模型静态单天解RMS在水平方向和高程方向分别提高36.1%和6.3%，动态单天解RMS在水平方向和高程方向分别提高9.1%和6.3%
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