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Navigation-Journal of the Institute of Navigation最新文献

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3D Vision Aided GNSS Real-Time Kinematic Positioning for Autonomous Systems in Urban Canyons 城市峡谷中自主系统的三维视觉辅助GNSS实时运动定位
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.590
W. Wen, X. Bai, L. Hsu
{"title":"3D Vision Aided GNSS Real-Time Kinematic Positioning for Autonomous Systems in Urban Canyons","authors":"W. Wen, X. Bai, L. Hsu","doi":"10.33012/navi.590","DOIUrl":"https://doi.org/10.33012/navi.590","url":null,"abstract":"In this paper, a three-dimensional vision-aided method is proposed to improve global navigation satellite system (GNSS) real-time kinematic (RTK) positioning. To mitigate the impact of reflected non-line-of-sight (NLOS) reception, a sky-pointing camera with a deep neural network was employed to exclude these measurements. However, NLOS exclusion results in distorted satellite geometry. To fill this gap, complementarity between the low-lying visual landmarks and the healthy but high-elevation satellite measurements was explored to improve the geometric constraints. Specifically, inertial measurement units, visual landmarks captured by a forward-looking camera, and healthy GNSS measurements were tightly integrated via sliding window optimization to estimate the GNSS-RTK float solution. The integer ambiguities and the fixed GNSS-RTK solution were then resolved. The effectiveness of the proposed method was verified using several challenging data sets collected in urban canyons in Hong Kong.","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84574761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Performance-Based GNSS Satellite Selection: A Linear Matrix Inequality (LMI) Approach 基于性能的GNSS卫星选择:线性矩阵不等式(LMI)方法
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.582
J. Juang
{"title":"Performance-Based GNSS Satellite Selection: A Linear Matrix Inequality (LMI) Approach","authors":"J. Juang","doi":"10.33012/navi.582","DOIUrl":"https://doi.org/10.33012/navi.582","url":null,"abstract":"","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83210570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Closed-Form Study of Undetected Range Errors Induced by Ionospheric Anomalies for GAST-D GBAS GAST-D GBAS电离层异常引起的未探测距离误差的封闭研究
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.603
Wang Li, Yiping Jiang
{"title":"Closed-Form Study of Undetected Range Errors Induced by Ionospheric Anomalies for GAST-D GBAS","authors":"Wang Li, Yiping Jiang","doi":"10.33012/navi.603","DOIUrl":"https://doi.org/10.33012/navi.603","url":null,"abstract":"","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82085024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simultaneous Localization and Calibration (SLAC) Methods for a Train-Mounted Magnetometer 列车磁强计的同步定位与标定方法
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.557
B. Siebler, A. Lehner, S. Sand, U. Hanebeck
{"title":"Simultaneous Localization and Calibration (SLAC) Methods for a Train-Mounted Magnetometer","authors":"B. Siebler, A. Lehner, S. Sand, U. Hanebeck","doi":"10.33012/navi.557","DOIUrl":"https://doi.org/10.33012/navi.557","url":null,"abstract":"and calibration (SLAC) algorithm based on a Rao-Blackwellized particle filter that enables magnetic train localization using only uncalibrated magnetometer measurements. In this paper, a lower-complexity version of the SLAC algorithm is proposed that only estimates a subset of calibration parameters. An evaluation compares the full and reduced SLAC approach to a particle filter in which the magnetometer is pre-calibrated with a fixed set of parameters. The results show a clear advantage for both SLAC approaches and that the SLAC algorithm with a reduced set of calibration parameters achieves the same performance as the one with a full set of parameters.","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88250252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Authentication of Satellite-Based Augmentation Systems with Over-the-Air Rekeying Schemes 基于卫星增强系统的空中重密钥认证
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.595
Jason Anderson, Sherman Lo, Andrew M. Neish, Todd Walter
{"title":"Authentication of Satellite-Based Augmentation Systems with Over-the-Air Rekeying Schemes","authors":"Jason Anderson, Sherman Lo, Andrew M. Neish, Todd Walter","doi":"10.33012/navi.595","DOIUrl":"https://doi.org/10.33012/navi.595","url":null,"abstract":"","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77207269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enabling RTK Positioning Under Jamming: Mitigation of Carrier-Phase Distortions Induced by Blind Spatial Filtering 在干扰下实现RTK定位:抑制盲空间滤波引起的载波相位畸变
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.556
Tobias Bamberg, A. Konovaltsev, M. Meurer
{"title":"Enabling RTK Positioning Under Jamming: Mitigation of Carrier-Phase Distortions Induced by Blind Spatial Filtering","authors":"Tobias Bamberg, A. Konovaltsev, M. Meurer","doi":"10.33012/navi.556","DOIUrl":"https://doi.org/10.33012/navi.556","url":null,"abstract":"","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77549550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Perspectives on the Systematic (Type B) Uncertainties of UTC-UTC(k) UTC-UTC(k)系统(B类)不确定度的展望
3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.571
Demetrios Matsakis
{"title":"Perspectives on the Systematic (Type B) Uncertainties of UTC-UTC(k)","authors":"Demetrios Matsakis","doi":"10.33012/navi.571","DOIUrl":"https://doi.org/10.33012/navi.571","url":null,"abstract":"<h3>Abstract</h3> The systematic uncertainties in the difference between Coordinated Universal Time (UTC) and UTC realizations like UTC(k) are analyzed with a semi-historical algorithm using the uncertainties of the calibrations of only the extant time-transfer links and their covariance with clock predictions. It is important that the network has matured through recalibration, and that UTC was once generated with only GPS. This approach covers all types of links, including redundant links and cross links. The uncertainties of non-GPS links depend on the uncertainties of the pivot lab’s GPS system and the other system(s) used in the link. Clock predictions of labs not linked by GPS must be adjusted whenever the pivot lab’s GPS receiver is recalibrated. The resulting uncertainties differ by up to 45% from the results given in a recently published alternative proposal. Aging of the uncertainties leads to a blending of this approach with the current algorithm used by the International Bureau of Weights and Measures (BIPM).","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135585744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
GEODNET: Global Earth Observation Decentralized Network 全球地球观测分散式网络
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.605
M. Horton, David Chen, Y. Yi, Xiaohua Wen, J. Doebbler
{"title":"GEODNET: Global Earth Observation Decentralized Network","authors":"M. Horton, David Chen, Y. Yi, Xiaohua Wen, J. Doebbler","doi":"10.33012/navi.605","DOIUrl":"https://doi.org/10.33012/navi.605","url":null,"abstract":"This paper explains some design and architecture decisions around the GEODNET network and the GeoDAO decentralized autonomous organization, which aims to create and operate a truly decentralized public GNSS reference sensing network. This paper covers the motivation of the network, the capabil - ities of current and future reference stations, the blockchain and GEOD token mechanics","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80804098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Space-Time Adaptive Processing as a Solution for Mitigating Interference Using Spatially-Distributed Antenna Arrays 空间分布天线阵列的空时自适应处理方法
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.592
Marius Brachvogel, M. Niestroj, M. Meurer, S. N. Hasnain, Ralf-eckhard Stephan, M. Hein
{"title":"Space-Time Adaptive Processing as a Solution for Mitigating Interference Using Spatially-Distributed Antenna Arrays","authors":"Marius Brachvogel, M. Niestroj, M. Meurer, S. N. Hasnain, Ralf-eckhard Stephan, M. Hein","doi":"10.33012/navi.592","DOIUrl":"https://doi.org/10.33012/navi.592","url":null,"abstract":"","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82586370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Instantaneous Sub-meter Level Precise Point Positioning of Low-Cost Smartphones 低成本智能手机的瞬时亚米级精确点定位
IF 2.2 3区 地球科学
Navigation-Journal of the Institute of Navigation Pub Date : 2023-01-01 DOI: 10.33012/navi.597
Jiale Wang, Fu Zheng, Yong Hu, Dong Zhang, Chuan-fang Shi
{"title":"Instantaneous Sub-meter Level Precise Point Positioning of Low-Cost Smartphones","authors":"Jiale Wang, Fu Zheng, Yong Hu, Dong Zhang, Chuan-fang Shi","doi":"10.33012/navi.597","DOIUrl":"https://doi.org/10.33012/navi.597","url":null,"abstract":"The prevalence of inexpensive g lobal n avigation s atellite s ystem (GNSS) chips that facilitate the performance of carrier phase measurements has provided hardware that can be used as the foundation for implementing precise point positioning (PPP) of low-cost smartphones. However, because of the atmospheric delays and high measurement noise associated with low-quality patch antennae, the convergence time of smartphone PPP can increase from minutes to even hours. By establishing the Satellite-based Ionospheric Model (SIM) and Real-time Tropospheric Grid Point (RTGP) models, we aim to achieve instantaneous sub-meter level positioning for smartphone PPP. In both kinematic and static experiments, Xiaomi Mi8 and Huawei P40 smartphone signals can converge to sub-meter accuracy in the horizontal direction within one to six seconds when adopting multi-constellation and dual-frequency PPP solutions augmented by precise atmospheric corrections. The atmospheric augmentation PPP method effectively improves the convergence speed and positioning accuracy compared to what can be achieved using the conventional PPP algorithm, thereby satisfying smartphone users’ demand for rapid and high-accuracy positioning.","PeriodicalId":56075,"journal":{"name":"Navigation-Journal of the Institute of Navigation","volume":null,"pages":null},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78654849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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