摘要
提出一种基于参考站增强信息的精密单点定位(PPP)算法。与其他方法的不同在于采用星间历元间差分技术,消除了模糊度和接收机钟差,回避了模糊度参数的收敛或固定难题。应用基于参考站的增强信息,以减弱残余对流层延迟和潜在偏差对定位结果的影响。与传统PPP处理方法相比较,该方法可以改善位置参数的收敛速度,定位精度也有一定程度的提高。
A new algorithm based on the regional reference stations network augmentation is proposed to realize precise point positioning(PPP).Different from other methods,the presented strategy uses the satellite-differenced and epoch-differenced(SDED)technology.It removes the ambiguity and receiver clock parameters,and avoids the ambiguities converging or fixing.To weaken the influence of the residual tropospheric delay and potential biases,another new strategy is presented to deal with the satellite and epoch differenced biases(SEDB). Comparison to the normal PPP,the new method can improve the convergence and positioning accuracy,when less than 1500sdata was processed.
出处
《测绘学报》
EI
CSCD
北大核心
2014年第5期481-485,492,共6页
Acta Geodaetica et Cartographica Sinica
基金
国家自然科学基金(41304029
41204034
41004002)
湖南省教育厅科学研究项目(12C0105)
湖南省科技计划(2012FJ4271)
广西科学研究计划(桂科能1207115-21)
关键词
精密单点定位
星间历元间差分误差
区域增强
参考站网
precise point positioning
satellite and epoch differenced bias(SEDB)
regional augmentation
reference stations network
