附加距离约束的GPS/BDS海上长基线差分定位及分析
GPS/BDS maritime long baseline differential positioning and analysis with additional distance constraints
张亚军 1曾安敏 2郑楠 1王骄阳1
作者信息
- 1. 长安大学 地质工程与测绘学院,陕西 西安 710054
- 2. 长安大学 地质工程与测绘学院,陕西 西安 710054;西安测绘研究所,陕西 西安 710054
- 折叠
摘要
为了削弱海上长基线差分定位中大气延迟残余等系统性误差对定位结果的影响,建立了顾及系统误差的差分定位函数模型以及天线间距离约束的长基线差分定位函数模型,分析了约束条件对长基线差分定位结果的影响.利用岸基和船载多台接收机进行试验,结果表明 500 km基线差分定位中,附加系统参数能够很好的吸收系统性误差对定位结果的影响,GPS/BDS组合定位精度具有明显提高;442～451 km陆海站间长基线附加合理天线间距离约束后定位误差减小到 1 dm内.本文附加系统参数及合理附加天线间距离约束方法可为海上长基线差分定位提供参考依据.
Abstract
In order to weaken the influence of systematic errors such as atmospheric delay residuals on positioning results in longbaseline differential positioning at the sea,a differential positioning function model with systematic errors and a longbaseline differential positioning function model with distance constraints between antennas are established.The influence of conditions on long baseline differential positioning results are also analyzed.Tests were conducted using multiple receivers on shore and ships.The results show that additional system parameters can well absorb the impact of systematic errors on positioning results in 500 km baseline differential positioning,and the positioning accuracy of GPS/BDS combination is significantly improved.After adding reasonable distance constraints to the long baseline of 442～451 km,the positioning error is reduced to within 1dm.The additional system parameters and reasonable additional inter-antenna distance constraint methods in this article can provide a reference for longbaseline differential positioning at the sea.
关键词
差分定位/海洋定位/长基线/系统误差/距离约束Key words
differential positioning/marine positioning/long baseline/systematic error/distance constraint引用本文复制引用
基金项目
国家重点研发计划(2020YFB0505801)
国家实验室基金(2021WHZZB1001)
国家自然科学基金(41931076)
出版年
2024
国家科技期刊平台
NSTL
万方数据