摘要
高精度全球导航卫星系统(global navigation satellite system,GNSS)定位技术拓展了位置服务行业的纵深发展,在智慧城市、智能交通和无人驾驶等领域得到了广泛应用,是当前卫星导航领域的热点。梳理了GNSS定位技术的现状和发展脉络,阐述多频多模GNSS高精度定位所涉及的整数模糊度固定、函数模型和随机模型融合等共性基础理论,介绍提升GNSS定位性能的非模型误差处理以及周跳探测与数据中断修复等关键技术。依托基础理论和关键技术的创新成果,介绍了同济大学GNSS团队近年来发展的4种多频多模GNSS高精度定位应用新技术,并展望了未来以GNSS为核心的高精度定位技术的发展趋势及其挑战。
High-precision global navigation satellite system(GNSS)positioning technology,as a hot spot in the field of satellite navigation,has expanded the in-depth development of the location-based service area,and has been widely used in smart cities,intelligent transportation,autonomous driving and other fields.First,this paper presents the current status and development of GNSS positioning technologies.Then,it explains the common basic theories such as integer ambiguity fixation,functional model and stochastic model fusion involved in multi-frequency multi-GNSS high-precision positioning,as well as the key techniques for improving GNSS positioning performance such as the non-model error processing,the cycle slip detection and data interruption repair.Based on the innovations of basic theories and key techniques,this paper introduces four new technologies for multi-frequency multi-GNSS high-precision positioning applications developed by Tongji University GNSS team in recent years.Finally,we remark the future development trend and challenges of GNSS-based high-precision positioning.
作者
李博峰
苗维凯
陈广鄂
LI Bofeng;MIAO Weikai;CHEN Guang’e(College of Surveying and Geoinformatics,Tongji University,Shanghai 200092,China)
出处
《武汉大学学报（信息科学版）》
EI
CAS
CSCD
北大核心
2023年第11期1769-1783,共15页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金(42225401)
上海市科委科技创新行动计划(21511103902,22511103003)
上海市产业协同创新(科技)项目(XTCX-KJ-2023-35,XTCX-KJ-2022-09)。
关键词
整数模糊度
高精度定位
长距离RTK
数据融合
海洋定位
integer ambiguity
high-precision positioning
long-distance RTK
data fusion
ocean positioning
