不同采样周期下BDS/GNSS精密单点定位验潮精度分析

文崧; 罗孝文; 曹凯; 尤伟

doi:10.3969/j.issn.1001-909X.2024.02.006

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海洋学研究 ›› 2024, Vol. 42 ›› Issue (2) : 62-70. DOI: 10.3969/j.issn.1001-909X.2024.02.006

研究论文

不同采样周期下BDS/GNSS精密单点定位验潮精度分析

文崧 ¹^,² ,
罗孝文 ¹^,²^,^* ,
曹凯 ²^,³ ,
尤伟 ²

作者信息 +

Analysis of tide observing accuracy at different sampling periods based on BDS/GNSS precise point positioning technique

WEN Song ¹^,² ,
LUO Xiaowen ¹^,²^,^* ,
CAO Kai ²^,³ ,
YOU Wei ²

Author information +

文章历史 +

摘要

利用海上移动平台搭载GNSS接收机采集观测数据,开展全球卫星导航系统(Global Navigation Satellite System,GNSS)精密单点定位(precise point positioning,PPP)采样周期对验潮精度影响的研究。以30 s、60 s、90 s和120 s为周期抽取成四个数据集,用Trip软件进行动态处理,获取每个测量历元坐标,比较各采样周期下两台接收机潮位测量结果,以标准差作为精度评价指标。研究结果表明,采样周期越短,PPP验潮精度越高,当采样周期缩短至60 s后,变化不再明显;采样周期从120 s逐级递减至90 s、60 s和30 s,精度分别提升63.0%、60.4%和10.0%。另外,对比了BDS/GPS/GLONASS三系统组合和GPS/GLONASS双系统组合GNSS PPP在验潮精度上的差异,结果显示,在30 s、60 s、90 s、120 s采样周期下,三系统较双系统PPP在验潮精度上分别提升了88.9%、90.4%、78.7%和44.7%。

Abstract

The influence of sampling period of precision point positioning (PPP) of Global Navigation Satellite System (GNSS) on tide accuracy was studied by using GNSS receiver to collect observation data on marine mobile platform. Different data sets were extracted at periods of 30 s, 60 s, 90 s and 120 s, and dynamic processing was carried out with Trip software to obtain the coordinates of each measuring period. The tide level measurement results of two receivers at four sampling periods were compared respectively, and the standard deviation was used as the evaluation index of accuracy. The results show that the shorter the sampling period, the higher the precision of PPP tide test. When the sampling period is shortened to 60 s, the change is no longer obvious. The sampling period gradually decreases from 120 s to 90 s, 60 s and 30 s, and the accuracy increases by 63.0%, 60.4% and 10.0%, respectively. In addition, the difference of PPP accuracy between BDS/GPS/GLONASS three-system combination GNSS and GPS/GLONASS dual-system combination GNSS is compared. At the sampling periods of 30 s, 60 s, 90 s and 120 s, the PPP tide test accuracy of the three-system combination is 88.9%, 90.4%, 78.7% and 44.7% higher than that of the dual-system combination, respectively.

导出引用

文崧, 罗孝文, 曹凯, 等. 不同采样周期下BDS/GNSS精密单点定位验潮精度分析[J]. 海洋学研究. 2024, 42(2): 62-70 https://doi.org/10.3969/j.issn.1001-909X.2024.02.006

WEN Song, LUO Xiaowen, CAO Kai, et al. Analysis of tide observing accuracy at different sampling periods based on BDS/GNSS precise point positioning technique[J]. Journal of Marine Sciences. 2024, 42(2): 62-70 https://doi.org/10.3969/j.issn.1001-909X.2024.02.006

中图分类号： P228.49;P731.23

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