摘要
利用Bernese模拟GPS观测数据研究了精度因子(DOP)、L1伪距多路径效应(MP1)、L2伪距多路径效应(MP2)以及观测数据和周跳比(O/SLPS)4种质量指标,并分析了它们与动态单点定位精度之间的相关性。模拟试验表明:精度因子对动态单点定位精度的影响较小,伪距多路径效应和周跳个数对动态单点定位精度影响较大。利用平滑伪距进行动态单点定位,伪距多路径效应MP1、MP2的阈值约0.500m,不进行平滑处理,伪距多路径效应MP1,MP2阈值约0.300m。观测数据和周跳(O/SLPS)比值的阈值约670。
Four data quality indicators, including the dilution of precision（DOP）, L1 pseudorange multipath（MP1 ）, L2 pseudorange multipath（MP2） and observation per slip（O/SLPS）, were studied using the simulated GPS data genera- ted by Bernese Software,and the correlation between these indicators and the kinematic point positioning precision was also analyzed. The simulation result indicates that DOP has little effect on the positioning precision, while pseudorange muhipath （MP1 and MP2） and cycle slips （O/SLPS） have more effect on it. Based on the kinematic point positioning,the thresholds of MP1 and MP2 are around 0. 500 m using smoothed pseudorange and around 0. 300 m using the pseudorange without smoothing,and the threshold of O/SLPS ratio is around 670.
出处
《山东科技大学学报（自然科学版）》
CAS
2013年第3期89-94,104,共7页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金项目(40974004)
现代工程测量国家测绘地理信息局重点实验室基金项目(TJES1101)
海岛(礁)测绘技术国家测绘地理信息局重点实验室基金项目(2011A01)
山东科技大学研究生科技创新基金项目(YCA110203)
