GPS单频精密单点定位软件实现与精度分析

基金项目: 武汉市青年科技晨光计划资助项目(200850731375)，国家863计划资助项目(2006AA12Z325)，国家创新研究群体科学基金资助项目(40721001)

详细信息

Realization and Precision Analysis of Single-Frequency Precise Point Positioning Software

¹School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 武汉市青年科技晨光计划资助项目(200850731375)，国家863计划资助项目(2006AA12Z325)，国家创新研究群体科学基金资助项目(40721001)

摘要: 建立了半和改正单频精密单点定位的数学模型,利用单频载波相位与C/A码伪距观测值,综合考虑各种误差改正模型,开发了单频精密单点定位解算模块TriP-SF,利用不同运动状态的实测数据进行了静态、静态模拟动态、车载动态及机载动态定位试验。试算结果表明,单天静态平面与高程定位精度均达到cm级,略低于当前双频精密单点定位的精度;动态定位平面位置精度为0.2~0.3 m,高程方向为0.5 m,能够满足dm级的定位要求。另外,动态定位精度与载体机动性的强弱有一定的相关性。
- GPS /
- 单频精密单点定位 /
- 半和改正 /
- 精度
Abstract: An optimal mathematic model of single-frequency precise point positioning is built by using GPS carrier phase measurements and pseudoranges.Comprehensive error correction models are taken into consideration and a calculating module named TriP-SF is developed.An extensive validation of the accuracy in both static and kinematic modes are carried out,including simulation of dynamic trial using static data,carborne dynamic trial and airborne dynamic tests.The results demonstrate the accuracy about 0.2-0.3 m for the horizontal position components and 0.5 m for the vertical in the carborne and airborne experiment.In addition,locating precision varies from maneuverability.
- GPS /
- single-frequency precise point positioning /
- half sum of phase and pseudorange /
- precision