辽宁工程技术大学测绘与地理科学学院,辽宁 阜新,123000
祝会忠,博士,教授,主要从事BDS高精度定位算法及应用研究。zhuhuizhong@whu.edu.cn
收稿:2025-04-23,
纸质出版:2025-06-05
移动端阅览
祝会忠,孙沐凡,李军.灾害环境下低成本终端BDS高精度应急定位方法[J].武汉大学学报(信息科学版),2025,50(6):1054-1064.
ZHU Huizhong,SUN Mufan,LI Jun.High-Precision Emergency Positioning Method for Low-Cost Terminal BDS in Disaster Environments[J].Geomatics and Information Science of Wuhan University,2025,50(6):1054-1064.
祝会忠,孙沐凡,李军.灾害环境下低成本终端BDS高精度应急定位方法[J].武汉大学学报(信息科学版),2025,50(6):1054-1064. DOI:10.13203/j.whugis20240312
ZHU Huizhong,SUN Mufan,LI Jun.High-Precision Emergency Positioning Method for Low-Cost Terminal BDS in Disaster Environments[J].Geomatics and Information Science of Wuhan University,2025,50(6):1054-1064. DOI:10.13203/j.whugis20240312
为了满足灾害环境中低成本终端高精度应急定位的需求,对灾害环境下的格网化增强定位信息的生成和低成本终端高精度增强定位方法进行研究。针对灾害环境应急定位的特点,采用长距离、大范围的参考站生成北斗卫星导航系统(BeiDou satellite navigation system
BDS)增强定位信息。鉴于参考站网被破坏无法生成误差改正数,利用较远的参考站计算误差改正数,用户端大气延迟误差可以得到较好的消除。在生成非差误差改正数的基础上,为兼顾用户端效率并降低服务端的计算压力,结合虚拟参考站及长距离BDS参考站与卫星间的几何距离信息,生成格网点的BDS增强定位观测值,通过数据单项通信方式播发格网点的增强定位信息,减少了用户数据传输压力,可以根据需求在应急定位区域生成更加密集的格网点。利用抗差自适应滤波模型提升灾害环境下应急定位的性能,提出了符合灾害应急环境的低成本终端特性的四分位法抗差自适应卡尔曼滤波方法,无须对新息向量进行标准化,通过采用四分位法动态确定阈值的方法建立抗差模型并求取方差膨胀因子,根据抗差权函数合理地调整观测值的权重,可以有效剔除粗差并改善定位精度。使用实测观测数据进行灾害应急环境下BDS增强定位算法验证和实验分析,结果表明,所提方法能够实现灾害环境下实时动态厘米级的高精度定位。
Objectives
2
In order to meet the needs of high-precision emergency positioning of low-cost terminals in disaster environments
we study the generation of grid-based enhanced positioning information and high-precision enhanced positioning methods of low-cost terminals in disaster environments.
Methods
2
According to the characteristics of emergency positioning in disaster environment
a long-distance and large-scale reference station is used to generate BeiDou satellite navigation system(BDS) enhanced positioning information. At the same time
in view of the fact that the reference station network is destroyed and the error correction number cannot be generated
the atmospheric delay error of the client can be well eliminated by using the farther reference station to calculate the error correction number. Taking into account the calculation pressure of the client and reducing the server
on the basis of generating the undifferen‑ced error correction
the geometric distance between the virtual reference station and the long-distance BDS reference station and the satellite is fused to generate the BDS enhanced positioning observation value of the grid point. The enhanced positioning information of the grid point is broadcast by the data single communication method
which reduces the pressure of user data transmission
and can generate more dense grid points in the emergency positioning area according to the demand. The robust adaptive filtering model is used to improve the performance of emergency positioning in disaster environment. A quartile robust adaptive Kalman filtering method is proposed
which conforms to the low-cost terminal characteristics of disaster emergency environment. This method does not need to standardize the innovation vector. By using the quartile method to dynamically determine the threshold
the robust model is established and the varian‑ce expansion factor is obtained. According to the robust weight function
the weight of the observed value is adjusted reasonably
which can effectively eliminate the gross error and improve the positioning accuracy.
Results
2
The measured observation data are used to verify and analyze the BDS enhanced positioning algorithm in disaster emergency environment. The results show that in the static mode
the planar accuracy and elevation accuracy of the low-cost terminal can both be controlled within 0.2 m
which is an improvement of 58.9% and 52.4% respectively compared to the conventional enhanced positioning algorithm; in the dynamic mode
the improvements in the east
north
and up directions of the low-cost terminal are 0.09 m
0.14 m
and 0.26 m respectively.
Conclusions
2
The experimental results show that the proposed method can achieve real-time dynamic centimeter-level high-precision positioning in disaster environment.
PAZIEWSKI J , SIERADZKI R , BARYLA R . Signal Characterization and Assessment of Code GNSS Positioning with Low-Power Consumption Smartphones [J]. GPS Solutions , 2019 , 23 ( 4 ): 98 .
GILL M , BISNATH S , AGGREY J , et al . Precise Point Positioning (PPP) Using Low-Cost and Ultra-Low-Cost GNSS Receivers [C]// The International Technical Meeting of the Satellite Division of The Institute of Navigation , Portland, Oregon , 2017 .
CHEN B , GAO C F , LIU Y S , et al . Real-Time Precise Point Positioning with a Xiaomi MI 8 Android Smartphone [J]. Sensors , 2019 , 19 ( 12 ): 2835 .
LI G C , GENG J H . Characteristics of Raw Multi-GNSS Measurement Error from Google Android Smart Devices [J]. GPS Solutions , 2019 , 23 ( 3 ): 90 .
ODOLINSKI R , TEUNISSEN P J G . Low-Cost, High-Precision, Single-Frequency GPS-BDS RTK Positioning [J]. GPS Solutions , 2017 , 21 ( 3 ): 1315 - 1330 .
王颖喆 , 陶贤露 , 朱锋 , 等 . 利用智能手机实现GNSS原始观测值的高精度差分定位 [J]. 武汉大学学报(信息科学版) , 2021 , 46 ( 12 ): 1941 - 1950 .
WANG Yingzhe , TAO Xianlu , ZHU Feng , et al . High Accuracy Differential Positioning with Smartphone GNSS Raw Measurements [J]. Geomatics and Information Science of Wuhan University , 2021 , 46 ( 12 ): 1941 - 1950 .
郭磊 , 王甫红 , 桑吉章 , 等 . 一种新的利用历元间位置变化量约束的GNSS导航算法 [J]. 武汉大学学报(信息科学版) , 2020 , 45 ( 1 ): 21 - 27 .
GUO Lei , WANG Fuhong , SANG Jizhang , et al . A New Inter‐epoch Position Variation Constrained Navigation Algorithm for Stand-Alone GNSS Receiver [J]. Geomatics and Information Science of Wuhan University , 2020 , 45 ( 1 ): 21 - 27 .
GENG J H , LI G C . On the Feasibility of Resolving Android GNSS Carrier-Phase Ambiguities [J]. Journal of Geodesy , 2019 , 93 ( 12 ): 2621 - 2635 .
祝会忠 , 李军 , 徐爱功 , 等 . 灾害应急环境下智能终端高精度北斗增强定位方法 [J]. 武汉大学学报(信息科学版) , 2020 , 45 ( 8 ): 1155 - 1167 .
ZHU Huizhong , LI Jun , XU Aigong , et al . High-Precision BDS Augmented Positioning Method for Disaster Emergency Environment on Smart Device [J]. Geomatics and Information Science of Wuhan University , 2020 , 45 ( 8 ): 1155 - 1167 .
舒宝 , 何元浩 , 王利 , 等 . 一种适用于大尺度卫星导航定位基准站的网络RTK方法 [J]. 武汉大学学报(信息科学版) , 2021 , 46 ( 11 ): 1609 - 1619 .
SHU Bao , HE Yuanhao , WANG Li , et al . A Network RTK Method for Large-Scale Satellite Navigation and Positioning Reference Stations [J]. Geomatics and Information Science of Wuhan University , 2021 , 46 ( 11 ): 1609 - 1619 .
NIELL A E . Global Mapping Functions for the Atmosphere Delay at Radio Wavelengths [J]. Journal of Geophysical Research: Solid Earth , 1996 , 101 ( B2 ): 3227 - 3246 .
BOEHM J , NIELL A , TREGONING P , et al . Global Mapping Function (GMF): A New Empirical Mapping Function Based on Numerical Weather Model Data [J]. Geophysical Research Letters , 2006 , 33 ( 7 ): 2005GL025546 .
BORKO A , EVEN-TZUR G . Stochastic Model Reliability in GNSS Baseline Solution [J]. Journal of Geodesy , 2021 , 95 ( 2 ): 20 .
JONGRUJINAN T , SATIRAPOD C . Stochastic Modeling for VRS Network-Based GNSS RTK with Residual Interpolation Uncertainty [J]. Journal of Applied Geodesy , 2020 , 14 ( 3 ): 317 - 325 .
黄丁发 , 周乐韬 , 刘经南 , 等 . 基于Internet的VRS/RTK定位算法模型及实验研究 [J]. 武汉大学学报 ( 信息科学版) , 2007 , 32 ( 3 ): 220 - 224 .
HUANG Dingfa , ZHOU Letao , LIU Jingnan , et al . Internet Based VRS/RTK Positioning Algorithm and Experiment [J]. Geomatics and Information Science of Wuhan University , 2007 , 32 ( 3 ): 220 - 224 .
吴富梅 , 杨元喜 , 崔先强 . 利用部分状态不符值构造的自适应因子在GPS/INS紧组合导航中的应用 [J]. 武汉大学学报(信息科学版) , 2010 , 35 ( 2 ): 156 - 159 .
WU Fumei , YANG Yuanxi , CUI Xianqiang . Application of Adaptive Factor Based on Partial State Discrepancy in Tight Coupled GPS/INS Integration [J]. Geomatics and Information Science of Wuhan University , 2010 , 35 ( 2 ): 156 - 159 .
祝会忠 , 李军 , 蔚泽然 , 等 . 长距离GPS/BDS参考站网多频载波相位整周模糊度解算方法 [J]. 测绘学报 , 2020 , 49 ( 3 ): 300 - 311 .
ZHU Huizhong , LI Jun , YU Zeran , et al . The Algorithm of Multi-frequency Carrier Phase Integer Ambiguity Resolution with GPS/BDS Between Long Range Network RTK Reference Stations [J]. Acta Geodaetica et Cartographica Sinica , 2020 , 49 ( 3 ): 300 - 311 .
0
浏览量
3
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构
京公网安备11010802024621