{"title":"Low Earth Orbit Navigation System (LEONS): Scalable GNSS-Independent Time Transfer and Positioning for Space Users","authors":"P. Anderson, George Schmitt, P. Shannon","doi":"10.33012/2023.18591","DOIUrl":"https://doi.org/10.33012/2023.18591","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"109 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":"114015245","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":"Evaluating Navigation Augmentation with LTE in the Urban Signal Environment","authors":"Andrew Brevick, K. Strandjord, Pai Wang","doi":"10.33012/2023.18644","DOIUrl":"https://doi.org/10.33012/2023.18644","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"39 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":"132391089","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}
. ABSTRACT GNSS serves safety-of-life applications in aviation such as precise navigation for approach and landing operations. Interference events happen near airport can severely affect the safe operations of the airspace. A recent interference event happened at Dallas-Fort Worth International Airport (KDFW) in October/2022 caused a widespread disruption. This incident resulted in multiple aircraft reporting GPS unreliable within 40NM, closure of a runway, and rerouting of air traffic. In this study, we performed a detailed investigation on this event, and run our localization algorithm to provide an initial estimation of the potential jamming source. There were no public reports from ground infrastructures during this event, which means collecting data from the ground is not sufficient. Therefore, in this study, we used data collected from Automatic Dependent Surveillance—Broadcast (ADS-B) system. It is a satellite-based surveillance system on the airplane which broadcasts aircraft position information. ADS-B is already widely in use and was made mandatory in Europe and the U.S.A. by 2020. This ubiquity and openness of ADS-B provides widely available source of GNSS information. In addition to investigating Dallas event, this research also built on our previous work on localizing interference sources (Liu et al., 2022) and provided a method to calculate an error bound on the final estimated jammer location. In our prior research, we built an algorithm that can identify the most likely location and transmitted power of potential jammer in real time. In this work, we designed an algorithm to provide real-time confidence information about the localization result. The error bound calculated from this confidence monitoring scheme is compared with result from the bootstrap method (Stine, 1989).
． GNSS服务于航空生命安全应用，如进近和着陆操作的精确导航。机场附近发生的干扰事件会严重影响空域的安全运行。最近在达拉斯-沃斯堡国际机场(KDFW)发生的干扰事件于2022年10月造成了广泛的中断。这一事件导致多架飞机在40海里范围内报告GPS不可靠，跑道关闭，空中交通改变航线。在这项研究中，我们对这一事件进行了详细的调查，并运行我们的定位算法来提供潜在干扰源的初步估计。在这次事件中没有来自地面基础设施的公开报告，这意味着从地面收集数据是不够的。因此，在本研究中，我们使用了从广播自动相关监视(ADS-B)系统收集的数据。它是一种基于卫星的飞机监视系统，可以广播飞机的位置信息。ADS-B已被广泛使用，并将于2020年在欧洲和美国强制实施。ADS-B的普遍性和开放性提供了广泛可用的GNSS信息来源。除了调查达拉斯事件外，本研究还建立在我们之前关于干扰源定位的工作基础上(Liu et al.， 2022)，并提供了一种计算最终估计干扰器位置的误差界限的方法。在我们之前的研究中，我们建立了一个算法，可以实时识别潜在干扰器的最可能位置和传输功率。在这项工作中，我们设计了一种算法来提供定位结果的实时置信度信息。将该置信度监测方案计算的误差界与自举法(Stine, 1989)的结果进行了比较。
{"title":"Investigation of GPS Interference Events with Refinement on the Localization Algorithm","authors":"Zi-xin Liu, J. Blanch, Sherman Lo, Todd Walter","doi":"10.33012/2023.18627","DOIUrl":"https://doi.org/10.33012/2023.18627","url":null,"abstract":". ABSTRACT GNSS serves safety-of-life applications in aviation such as precise navigation for approach and landing operations. Interference events happen near airport can severely affect the safe operations of the airspace. A recent interference event happened at Dallas-Fort Worth International Airport (KDFW) in October/2022 caused a widespread disruption. This incident resulted in multiple aircraft reporting GPS unreliable within 40NM, closure of a runway, and rerouting of air traffic. In this study, we performed a detailed investigation on this event, and run our localization algorithm to provide an initial estimation of the potential jamming source. There were no public reports from ground infrastructures during this event, which means collecting data from the ground is not sufficient. Therefore, in this study, we used data collected from Automatic Dependent Surveillance—Broadcast (ADS-B) system. It is a satellite-based surveillance system on the airplane which broadcasts aircraft position information. ADS-B is already widely in use and was made mandatory in Europe and the U.S.A. by 2020. This ubiquity and openness of ADS-B provides widely available source of GNSS information. In addition to investigating Dallas event, this research also built on our previous work on localizing interference sources (Liu et al., 2022) and provided a method to calculate an error bound on the final estimated jammer location. In our prior research, we built an algorithm that can identify the most likely location and transmitted power of potential jammer in real time. In this work, we designed an algorithm to provide real-time confidence information about the localization result. The error bound calculated from this confidence monitoring scheme is compared with result from the bootstrap method (Stine, 1989).","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"15 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":"131205848","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}
Jong-Heon Kim, Bogeun Cho, Bugyeom Kim, C. Kee, Sunkyoung Yu, Jungbeom Kim
{"title":"A Study on Improving Smartphone Precise Positioning Performance Through Antenna Calibration According to Smartphone Attitude","authors":"Jong-Heon Kim, Bogeun Cho, Bugyeom Kim, C. Kee, Sunkyoung Yu, Jungbeom Kim","doi":"10.33012/2023.18648","DOIUrl":"https://doi.org/10.33012/2023.18648","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"101 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":"133655805","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}
The Advanced Receiver Autonomous Integrity Monitoring (ARAIM) concept relies on characterizing the satellite clock and ephemeris bounding parameters. In this paper, we expand on the previous study on the GPS error bounding parameters to include Galileo and the approximation of the bounding parameters of the Civil Navigation (CNAV) Message type. In particular, we compute the bounding parameters that capture their inherent variability. We then partition the error by their observable conditions to determine whether the currently collected data is representative of future error behavior. Furthermore, for Galileo, we change the nominal error definition to investigate how it would affect the bounding parameter distribution. We find that the Galileo normalized error data are bounded with Gaussian with mean of 0.04 and standard deviation of 0.04 for different partitions with newer satellites having more stable and lower bounding parameters. Lowering the nominal error definition threshold stabilizes the bounding parameters. We estimate the CNAV bounding parameter by lowering the σURA values. We find the normalized errors are bounded with Gaussian with mean of 0.41 and standard deviation of 1.15 even after lowering the σ URA values. In addition, lowering the σ URA values stabilizes the bounding parameters.
{"title":"Satellite Clock and Ephemeris Error Bounding Characterization for Galileo and Estimated CNAV","authors":"Xinwei Liu, Rebecca Wang, J. Blanch, Todd Walter","doi":"10.33012/2023.18606","DOIUrl":"https://doi.org/10.33012/2023.18606","url":null,"abstract":"The Advanced Receiver Autonomous Integrity Monitoring (ARAIM) concept relies on characterizing the satellite clock and ephemeris bounding parameters. In this paper, we expand on the previous study on the GPS error bounding parameters to include Galileo and the approximation of the bounding parameters of the Civil Navigation (CNAV) Message type. In particular, we compute the bounding parameters that capture their inherent variability. We then partition the error by their observable conditions to determine whether the currently collected data is representative of future error behavior. Furthermore, for Galileo, we change the nominal error definition to investigate how it would affect the bounding parameter distribution. We find that the Galileo normalized error data are bounded with Gaussian with mean of 0.04 and standard deviation of 0.04 for different partitions with newer satellites having more stable and lower bounding parameters. Lowering the nominal error definition threshold stabilizes the bounding parameters. We estimate the CNAV bounding parameter by lowering the σURA values. We find the normalized errors are bounded with Gaussian with mean of 0.41 and standard deviation of 1.15 even after lowering the σ URA values. In addition, lowering the σ URA values stabilizes the bounding parameters.","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"46 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":"114588593","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":"Adaptive Fusion of Navigation Solutions from Measurement Subsets","authors":"Chun Yang, A. Soloviev","doi":"10.33012/2023.18638","DOIUrl":"https://doi.org/10.33012/2023.18638","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"11 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":"115081566","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":"Precision-Aided Partial Ambiguity Resolution Scheme for GNSS Attitude Determination","authors":"J. M. Castro-Arvizu, D. Medina, J. Vilà‐Valls","doi":"10.33012/2023.18673","DOIUrl":"https://doi.org/10.33012/2023.18673","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"67 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":"117301576","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":"AI-based GNSS Spoofing Attack Detection for Autonomous Vehicles using Satellite Characteristics Data","authors":"Sagar Dasgupta, Mizanur Rahman, T. Bandi","doi":"10.33012/2023.18608","DOIUrl":"https://doi.org/10.33012/2023.18608","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"15 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":"116842319","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":"Results of One-Year Observation of a Jamming Interferer Degrading Amplitude Scintillation Indices in GISTM Receiver","authors":"Alex Minetto, E. Pica, C. Cesaroni, F. Dovis","doi":"10.33012/2023.18619","DOIUrl":"https://doi.org/10.33012/2023.18619","url":null,"abstract":"","PeriodicalId":261056,"journal":{"name":"Proceedings of the 2023 International Technical Meeting of The Institute of Navigation","volume":"121 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":"125976883","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":"Accelerating a Software Defined Satnav Receiver using Multiple Parallel Processing Schemes","authors":"Logan Reich, S. Gunawardena, M. Braasch","doi":"10.33012/2023.18651","DOIUrl":"https://doi.org/10.33012/2023.18651","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":"130621375","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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