摘要
Abstract
To compare the positioning performance of the global navigation satellite system(GNSS)in marine and terrestrial environments and the data processing accuracy of two GNSS algorithms,namely precise point positioning(PPP)and post-processing kinematic(PPK),this paper processed and analyzed GNSS buoy,static GNSS station,and tide gauge data from April 14,2023 at 2:00 to April 18,2023 at 3:00.The results indicate that terrestrial GNSS observations are significantly superior to marine buoys in terms of multipath errors and signal-to-noise ratio,with higher values observed in the L1 and L2 measurements of terrestrial stations than those of the buoys.The data quality of terrestrial fixed stations surpasses that of marine buoys,and the number of cycle slip observations demonstrates greater stability in fixed station data.In terms of the accuracy of dynamic coordinate time series solutions,the PPK algorithm shows a slight advantage over the PPP algorithm in terrestrial environments,particularly in the vertical direction.In marine environments,the PPK algorithm is markedly superior to the PPP algorithm due to its effectiveness in eliminating noise and errors.This paper reveals the relatively lower GNSS positioning performance and observation data quality in marine environments and provides guidance for the application of GNSS technology in both marine and terrestrial environments.关键词
陆地环境/海洋环境/定位精度/精密单点定位/后处理动态相对定位Key words
terrestrial environment/marine environment/positioning accuracy/precise point positioning/post-processing kinematic分类
天文与地球科学
