{"title":"Fuzzy C-Mean Clustering Based NLOS Signal Identification Method and Localization Model in Urban Canyon Environment","authors":"Yilang Zhang, Yuan Sun, Z. Deng","doi":"10.33012/2023.18656","DOIUrl":"https://doi.org/10.33012/2023.18656","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122484483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Performance Analysis of Deep Learning Supported Kalman Filter","authors":"Shuo Li, N. Mikhaylov, T. Pany","doi":"10.33012/2023.18640","DOIUrl":"https://doi.org/10.33012/2023.18640","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125356561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Precise Positioning and Timekeeping in Lunar Orbit via Terrestrial GPS Time-Differenced Carrier-Phase Measurements","authors":"K. Iiyama, Sriramya Bhamidipati, G. Gao","doi":"10.33012/2023.18597","DOIUrl":"https://doi.org/10.33012/2023.18597","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121653571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Pullen, Sherman Lo, Isaiah Colobong, Sukrut Oak, J. Blanch, Todd Walter, M. Crews, Robert Jackson, Stephen Young, Kevin Huttenhoff
In previous work (Pullen 2022), we introduced the concept of augmenting GPS with six inclined geosynchronous satellites (I-GEOs) that would provide GPS-Block-III-quality military and civil ranging signals along with conveying Satellite-based Augmentation System (SBAS) messages to users. This would create a new means to distribute SBAS messages globally and would support Advanced Receiver Autonomous Integrity Monitoring (ARAIM) for users not equipped to use SBAS. This paper examines multiple configurations of I-GEO satellites augmenting GPS satellites and includes augmentation by satellites in Low Earth Orbit (LEO). For each arrangement of satellites, the Stanford MAAST GNSS simulation software package is used to evaluate the protection levels and the availability of integrity for aviation LPV approaches (to a minimum decision height of 250 ft) for ARAIM users. MAAST computes PLs and availability for a global grid of military (dual-frequency M-code and/or PRS) and civil (dual-frequency L1/L5 or equivalent) user locations separated by 5 degrees of latitude and longitude. Contour plots of LPV availability, Vertical Protection Level (VPL), and Horizontal Protection Level (VPL and HPL) are generated for each combination of I-GEO and other GNSS satellites. In addition, sorted (by magnitude) values of VPL and HPL are plotted for example locations in the user grid to illustrate the sensitivity of VPL and HPL to the poorest satellite geometries before and after I-GEOs or LEOs are included.
{"title":"GNSS Constellation Performance Using ARAIM with Inclined Geosynchronous Satellite and Low-Earth-Orbit Satellite Augmentation","authors":"S. Pullen, Sherman Lo, Isaiah Colobong, Sukrut Oak, J. Blanch, Todd Walter, M. Crews, Robert Jackson, Stephen Young, Kevin Huttenhoff","doi":"10.33012/2023.18661","DOIUrl":"https://doi.org/10.33012/2023.18661","url":null,"abstract":"In previous work (Pullen 2022), we introduced the concept of augmenting GPS with six inclined geosynchronous satellites (I-GEOs) that would provide GPS-Block-III-quality military and civil ranging signals along with conveying Satellite-based Augmentation System (SBAS) messages to users. This would create a new means to distribute SBAS messages globally and would support Advanced Receiver Autonomous Integrity Monitoring (ARAIM) for users not equipped to use SBAS. This paper examines multiple configurations of I-GEO satellites augmenting GPS satellites and includes augmentation by satellites in Low Earth Orbit (LEO). For each arrangement of satellites, the Stanford MAAST GNSS simulation software package is used to evaluate the protection levels and the availability of integrity for aviation LPV approaches (to a minimum decision height of 250 ft) for ARAIM users. MAAST computes PLs and availability for a global grid of military (dual-frequency M-code and/or PRS) and civil (dual-frequency L1/L5 or equivalent) user locations separated by 5 degrees of latitude and longitude. Contour plots of LPV availability, Vertical Protection Level (VPL), and Horizontal Protection Level (VPL and HPL) are generated for each combination of I-GEO and other GNSS satellites. In addition, sorted (by magnitude) values of VPL and HPL are plotted for example locations in the user grid to illustrate the sensitivity of VPL and HPL to the poorest satellite geometries before and after I-GEOs or LEOs are included.","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114856397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparison of CRPA Direction of Arrival Methods on Post Correlated GNSS Signals for Solution Authentication and Spoofing Detection","authors":"C. A. Givhan, Scott M. Martin","doi":"10.33012/2023.18625","DOIUrl":"https://doi.org/10.33012/2023.18625","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114928184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bugyeom Kim, Jong-Heon Kim, C. Kee, Sunkyoung Yu, Jungbeom Kim
{"title":"Analysis of RTK Positioning Accuracy Using Antenna Calibrated Commercial Samsung Smartphone","authors":"Bugyeom Kim, Jong-Heon Kim, C. Kee, Sunkyoung Yu, Jungbeom Kim","doi":"10.33012/2023.18674","DOIUrl":"https://doi.org/10.33012/2023.18674","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124054901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Precise Real-Time Doppler Positioning Using a Stand-Alone GNSS Receiver","authors":"Ziheng Zhou, Hong Li, Mingquan Lu","doi":"10.33012/2023.18658","DOIUrl":"https://doi.org/10.33012/2023.18658","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130678932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Advanced Receiver Autonomous Integrity Monitoring is a proposed evolution of RAIM to multi-constellation and dual frequency that is being standardized. Enabling dual frequency will have at least two effects. First, the error bounds on the pseudorange will be decreased substantially. As a result, the tropospheric residual error, which had very little effect in the user Protection Level in RAIM, will be more critical in ARAIM. Second, not all satellites will be dual frequency capable (at least initially for GPS). Only using the dual frequency satellites could result in a performance degradation compared to single frequency. To start addressing these points, in this work we: 1) evaluate the effect of tropospheric error models with correlation on ARAIM protection levels, 2) propose an implementation of mixed single frequency - dual frequency measurements and evaluate the potential performance improvements. For the first point, we find that introducing a tropospheric model with perfect correlation causes the HPL to slightly decrease in a Horizontal-ARAIM scenario and the VPL to increase by 10% in a Vertical-ARAIM scenario. For the second point, we find that introducing a mixed mode would allow users to benefit from dual frequency well before a full and redundant L1-L5 GPS constellation is available.
{"title":"Evaluation of Tropospheric and Mixed Single - Dual Frequency Error Models in Advanced RAIM","authors":"J. Blanch, T. Walter, Frank Lai","doi":"10.33012/2023.18614","DOIUrl":"https://doi.org/10.33012/2023.18614","url":null,"abstract":"Advanced Receiver Autonomous Integrity Monitoring is a proposed evolution of RAIM to multi-constellation and dual frequency that is being standardized. Enabling dual frequency will have at least two effects. First, the error bounds on the pseudorange will be decreased substantially. As a result, the tropospheric residual error, which had very little effect in the user Protection Level in RAIM, will be more critical in ARAIM. Second, not all satellites will be dual frequency capable (at least initially for GPS). Only using the dual frequency satellites could result in a performance degradation compared to single frequency. To start addressing these points, in this work we: 1) evaluate the effect of tropospheric error models with correlation on ARAIM protection levels, 2) propose an implementation of mixed single frequency - dual frequency measurements and evaluate the potential performance improvements. For the first point, we find that introducing a tropospheric model with perfect correlation causes the HPL to slightly decrease in a Horizontal-ARAIM scenario and the VPL to increase by 10% in a Vertical-ARAIM scenario. For the second point, we find that introducing a mixed mode would allow users to benefit from dual frequency well before a full and redundant L1-L5 GPS constellation is available.","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"42 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130720045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Rotating Dual Antennas Based Detection Method For Distributed GNSS Spoofing Attacks","authors":"Hao Wang, Hong Li, Mingquan Lu","doi":"10.33012/2023.18633","DOIUrl":"https://doi.org/10.33012/2023.18633","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131704149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gerardo Allende-Alba, P. Steigenberger, S. Thoelert
{"title":"A 3-Features Assessment of the On-Orbit Performance of GNSS Satellite Antennas: The Case of GLONASS R719 and R720","authors":"Gerardo Allende-Alba, P. Steigenberger, S. Thoelert","doi":"10.33012/2023.18649","DOIUrl":"https://doi.org/10.33012/2023.18649","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126941482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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