1.中国矿业大学环境与测绘学院,江苏 徐州,221116
2.云南电网有限责任公司电力科学研究院电力遥感技术联合实验室,云南 昆明,650214
胡一帆,硕士,主要研究方向为GNSS阴影匹配算法。ts21160013a31@cumt.edu.cn
李增科,博士,教授。zengkeli@yeah.net
收稿:2023-03-14,
纸质出版:2025-05-05
移动端阅览
胡一帆,李增科,孙久运,等.顾及局部最优的手机端GNSS阴影匹配定位算法[J].武汉大学学报(信息科学版),2025,50(5):856-865.
HU Yifan,LI Zengke,SUN Jiuyun,et al.Smartphone GNSS Shadow Matching Algorithm Considering Local Optimal[J].Geomatics and Information Science of Wuhan University,2025,50(5):856-865.
胡一帆,李增科,孙久运,等.顾及局部最优的手机端GNSS阴影匹配定位算法[J].武汉大学学报(信息科学版),2025,50(5):856-865. DOI:,10.13203/j.whugis20220744
HU Yifan,LI Zengke,SUN Jiuyun,et al.Smartphone GNSS Shadow Matching Algorithm Considering Local Optimal[J].Geomatics and Information Science of Wuhan University,2025,50(5):856-865. DOI:,10.13203/j.whugis20220744
受建筑物反射的卫星信号以及多路径效应的影响,城市复杂环境下全球导航卫星系统伪距单点定位误差通常高达数十米。阴影匹配算法利用3D城市模型进行卫星可见性预测与位置匹配,可降低伪距单点定位误差,但传统的阴影匹配算法未充分考虑实际观测环境与理想观测环境的不同,存在固定阈值打分、卫星利用率较低、选取高分候选位置不合理等问题。提出一种顾及局部最优的阴影匹配定位方法,依据固定区间信噪比确定局部候选区域,采用连续信噪比打分公式对候选位置点评分,归一化选取高分候选位置以及加权平均处理求得最终定位结果。与传统阴影匹配算法不同,连续信噪比打分和固定区间信噪比打分的结果具有不一致性,顾及局部最优的阴影匹配算法通过划分候选区域将二者相结合,这样就能在全局区域内不违背全局最优的同时,在局部范围内也满足连续信噪比打分结果最优,以获得既是全局最优又是局部最优的定位结果。在城市复杂环境下的静态实验中,顾及局部最优的阴影匹配算法相较于伪距单点定位与传统的阴影匹配算法,在定位精度上分别提升了75.68%和60.82%,绝对定位精度达到了5 m左右;动态实验中顾及局部最优的阴影匹配算法跨街方向的定位精度达到了1.36 m,显著提高了该环境下的手机端定位精度。
Objectives
2
Under the influence of satellite signals reflected by buildings and multipath effect
global navigation satellite system (GNSS) pseudo-distance single point positioning error can be up to tens of meters in complex urban area
in order to improve GNSS positioning accuracy in urban area
a shadow matching algorithm is proposed. Shadow matching algorithm uses 3D city model for satellite visibility prediction and location matching
which can reduce the pseudo-distance single point positioning error and improve the positioning accuracy of the smartphone. However
the basic algorithm does not fully consider the influence of different observation environments
and there are still some problems such as fixed threshold scoring
low satellite utilization rate
and unreasonable selection of high-score candidate locations
and there is still a large space for improvement of its positioning accuracy.
Methods
2
We propose a shadow matching localization method considering local optimality. First
the unimproved shadow matching algorithm is used to determine the local candidate regions in the global candidate regions
then the continuous signal-to-noise raito scoring formula is used to score the local candidate regions. Finally
the scores of the local candidate locations are normalized
and the high score candidate locations are selected for weighted average processing to obtain the global and local optimal positioning results.
Results
2
Experimental results show that in the complex urban area
compared with the pseudo-distance single point positioning and the basic shadow matching algorithm
the localization accuracy of the locally optimal shadow matching algorithm in the static experiment is improved by about 75% and 50%
respectively
and the absolute positioning accuracy reaches about 5 m. In the dynamic experiment
the cross-street positioning accuracy of the shadow matching algorithm considering the local optimal reaches 1.36 m.
Conclusions
2
The shadow matching algorithm considering the local optimal can significantly improve the GNSS positioning accuracy of mobile phones in complex urban environments
providing a reference for vehicle and pedestrian navigation services.
刘经南 , 高柯夫 . 智能时代测绘与位置服务领域的挑战与机遇 [J]. 武汉大学学报(信息科学版) , 2017 , 42 ( 11 ): 1506 - 1517 .
LIU Jingnan , GAO Kefu . Challenges and Opportunities for Mapping and Surveying and Location Based Service in the Age of Intelligence [J]. Geomatics and Information Science of Wuhan University , 2017 , 42 ( 11 ): 1506 - 1517 .
CHEN L , THOMBRE S , JÄRVINEN K , et al . Robustness, Security and Privacy in Location-Based Services for Future IoT: A Survey [J]. IEEE Access , 2017 , 5 : 8956 - 8977 .
LIU W K , SHI X , ZHU F , et al . Quality Analysis of Multi-GNSS Raw Observations and a Velocity-Aided Positioning Approach Based on Smartphones [J]. Advances in Space Research , 2019 , 63 ( 8 ): 2358 - 2377 .
SZOT T , SPECHT C , SPECHT M , et al . Comparative Analysis of Positioning Accuracy of Samsung Galaxy Smartphones in Stationary Measurements [J]. PLoS One , 2019 , 14 ( 4 ): e0215562 .
张小红 , 陶贤露 , 王颖喆 , 等 . 城市场景智能手机GNSS/MEMS融合车载高精度定位 [J]. 武汉大学学报(信息科学版) , 2022 , 47 ( 10 ): 1740 - 1749 .
ZHANG Xiaohong , TAO Xianlu , WANG Yingzhe , et al . MEMS-Enhanced Smartphone GNSS High-Precision Positioning for Vehicular Navigation in Urban Conditions [J]. Geomatics and Information Science of Wuhan University , 2022 , 47 ( 10 ): 1740 - 1749 .
张楷时 , 焦文海 , 李建文 . Android智能终端GNSS定位精度分析 [J]. 武汉大学学报(信息科学版) , 2019 , 44 ( 10 ): 1472 - 1477 .
ZHANG Kaishi , JIAO Wenhai , LI Jianwen . Analysis of GNSS Positioning Precision on Android Smart Devices [J]. Geomatics and Information Science of Wuhan University , 2019 , 44 ( 10 ): 1472 - 1477 .
葛于祥 , 刘赞 , 李增科 , 等 . 智能手机单点定位随机模型与平滑方式分析 [J]. 合肥工业大学学报(自然科学版) , 2022 , 45 ( 8 ): 1113 - 1119 .
GE Yuxiang , LIU Zan , LI Zengke , et al . Analysis of Stochastic Models and Smoothing Methods in Smartphone Single Point Positioning [J]. Journal of Hefei University of Technology (Natural Science) , 2022 , 45 ( 8 ): 1113 - 1119 .
WU Q , SUN M F , ZHOU C J , et al . Precise Point Positioning Using Dual-Frequency GNSS Observations on Smartphone [J]. Sensors , 2019 , 19 ( 9 ): 2189 .
刘超 , 高井祥 , 于子晏 , 等 . GPS/伪卫星相对定位中伪卫星优化布设模型研究 [J]. 中国矿业大学学报 , 2012 , 41 ( 1 ): 120 - 126 .
LIU Chao , GAO Jingxiang , YU Ziyan , et al . An Optimal Pseudolites Location Model of GPS/Pseudolites Integrated Relative Positioning [J]. Journal of China University of Mining & Technology , 2012 , 41 ( 1 ): 120 - 126 .
王甫红 , 栾梦杰 , 程雨欣 , 等 . 城市环境下智能手机车载GNSS/MEMS IMU紧组合定位算法 [J]. 武汉大学学报(信息科学版) , 2023 , 48 ( 7 ): 1106 - 1116 .
WANG Fuhong , LUAN Mengjie , CHENG Yuxin , et al . Smartphone GNSS/MEMS IMU Tightly-Coupled Integration Positioning Method for Vehicular Navigation in Urban Conditions [J]. Geomatics and Information Science of Wuhan University , 2023 , 48 ( 7 ): 1106 - 1116 .
YOON D , KEE C , SEO J , et al . Position Accuracy Improvement by Implementing the DGNSS-CP Algorithm in Smartphones [J]. Sensors , 2016 , 16 ( 6 ): 910 .
MOREAU J , AMBELLOUIS S , RUICHEK Y . Fisheye-Based Method for GPS Localization Improvement in Unknown Semi-Obstructed Areas [J]. Sensors , 2017 , 17 ( 1 ): 119 .
WEN W W , ZHANG G H , HSU L T . GNSS NLOS Exclusion Based on Dynamic Object Detection Using LiDAR Point Cloud [J]. IEEE Transactions on Intelligent Transportation Systems , 2021 , 22 ( 2 ): 853 - 862 .
MIURA S , HISAKA S , KAMIJO S . GPS Multipath Detection and Rectification Using 3D Maps [C]// The 16th International IEEE Conference on Intelligent Transportation Systems (ITSC 2013) , HagueThe, Netherlands , 2013 .
ISAACS J T , IRISH A T , QUITIN F , et al . Bayesian Localization and Mapping Using GNSS SNR Measurements [C]// 2014 IEEE/ION Position , Location and Navigation Symposium, Monterey, CA, USA , 2014 .
GROVES P D . Shadow Matching: A New GNSS Positioning Technique for Urban Canyons [J]. Journal of Navigation , 2011 , 64 ( 3 ): 417 - 430 .
GROVES P D , JIANG Z Y . Height Aiding, C / N 0 Weightin g and Consistency Checking for GNSS NLOS and Multipath Mitigation in Urban Areas [J]. Journal of Navigation , 2013 , 66 ( 5 ): 653 - 669 .
WANG L , GROVES P D , ZIEBART M K . GNSS Shadow Matching: Improving Urban Positioning Accuracy Using a 3D City Model with Optimized Visibility Scoring Scheme [J]. Navigation , 2013 , 60 ( 3 ): 195 - 207 .
GROVES P D , WANG L , ADJRAD M , et al . GNSS Shadow Matching : The Challenges Ahead [C]// The 28th International Technical Meeting of the Satellite Division of the Institute of Navigation , Florida, USA , 2015 .
WANG L , GROVES P D , ZIEBART M K . Smartphone Shadow Matching for Better Cross-Street GNSS Positioning in Urban Environments [J]. Journal of Navigation , 2015 , 68 ( 3 ): 411 - 433 .
HSU L T , GU Y L , SHUNSUKE K . Pedestrian Localization Service Using 3D Map and RAIM GNSS Satellite Selection Technique [C]// IEEE 18th International Conference on Intelligent Transportation Systems , Gran Canaria, Spain , 2015 .
HSU L T , GU Y L , KAMIJO S . NLOS Correction/Exclusion for GNSS Measurement Using RAIM and City Building Models [J]. Sensors , 2015 , 15 ( 7 ): 17329 - 17349 .
HSU L T , CHEN F Y , KAMIJO S . Evaluation of Multi-GNSS and GPS with 3D Map Methods for Pedestrian Positioning in an Urban Canyon Environment [J]. IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences , 2015 , E98.A( 1 ): 284 - 293 .
HSU L T , GU Y L , KAMIJO S . 3D Building Model-Based Pedestrian Positioning Method Using GPS/GLONASS/QZSS and Its Reliability Calculation [J]. GPS Solutions , 2016 , 20 ( 3 ): 413 - 428 .
HSU L T , TOKURA H , KUBO N , et al . Multiple Faulty GNSS Measurement Exclusion Based on Consistency Check in Urban Canyons [J]. IEEE Sensors Journal , 2017 , 17 ( 6 ): 1909 - 1917 .
HSU L T . GNSS Multipath Detection Using a Machine Learning Approach [C]// IEEE 20th International Conference on Intelligent Transportation Systems (ITSC) , Yokohama, Japan , 2017 .
SUN R , HSU L T , XUE D B , et al . GPS Signal Reception Classification Using Adaptive Neuro-Fuzzy Inference System [J]. Journal of Navigation , 2019 , 72 ( 3 ): 685 - 701 .
ZHANG G H , WEN W S , HSU L T . Rectification of GNSS-Based Collaborative Positioning Using 3D Building Models in Urban Areas [J]. GPS Solutions , 2019 , 23 ( 3 ): 83 .
胡辉 , 欧敏辉 , 颜瑜军 . 阴影匹配/粒子滤波自适应加权组合定位算法 [J]. 探测与控制学报 , 2016 , 38 ( 4 ): 82 - 87 .
HU Hui , OU Minhui , YAN Yujun . Shadow Matching/Particle Filter Adaptive Weighted Integrated Localization Algorithm [J]. Journal of Detection & Control , 2016 , 38 ( 4 ): 82 - 87 .
罗欢 , 翁多杰 , 陈武 . 一种改进的手机阴影匹配定位方法 [J]. 武汉大学学报(信息科学版) , 2021 , 46 ( 12 ): 1907 - 1915 .
LUO Huan , WENG Duojie , CHEN Wu . An Improved Shadow Matching Method for Smartphone Positioning [J]. Geomatics and Information Science of Wuhan University , 2021 , 46 ( 12 ): 1907 - 1915 .
王式太 , 张博宇 , 殷敏 . 基于动态阈值的移动终端GNSS定位阴影匹配算法 [J]. 大地测量与地球动力学 , 2021 , 41 ( 11 ): 1101 - 1105 .
WANG Shitai , ZHANG Boyu , YIN Min . Research on Shadow Matching Algorithm for GNSS Positioning of Mobile Terminal Based on Dynamic Threshold [J]. Journal of Geodesy and Geodynamics , 2021 , 41 ( 11 ): 1101 - 1105 .
KUMAR R , PETOVELLO M G . 3D Building Model-Assisted Snapshot Positioning Algorithm [J]. GPS Solutions , 2017 , 21 ( 4 ): 1923 - 1935 .
NG H F , HSU L T . 3D Mapping Database-Aided GNSS RTK and Its Assessments in Urban Canyons [J]. IEEE Transactions on Aerospace and Electronic Systems , 2021 , 57 ( 5 ): 3150 - 3166 .
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