2023 IEEE/ION Position, Location and Navigation Symposium (PLANS)最新文献_第5页

An Evaluation of the Advanced RAIM Threat Model 先进RAIM威胁模型的评估

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10139928

J. Blanch, T. Walter

引用次数: 0

Multipath Detection and Mitigation from GNSS Observations Using Antenna Arrays 使用天线阵列的GNSS观测的多路径检测和缓解

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10139949

Mohanad Ahmed, Tarig Ballal, Xing Liu, T. Al-Naffouri

引用次数: 0

Low Cost SDR Receiver for Medium Frequency R-Mode 中频r模式低成本SDR接收机

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10140010

Lars Grundhöfer, F. Rizzi, Niklas Hehenkamp, S. Gewies

引用次数: 0

A simple and robust K-factor computation method for GNSS integrity needs 一种满足GNSS完整性需求的简单鲁棒k因子计算方法

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10140119

K. Mimouni, Odile Maliet, Julie Antic

引用次数: 0

Implementation of real-time RTK/DGNSS on smartphones and positioning improvement for millions of users in Southeast Asia 在智能手机上实现实时RTK/DGNSS，并为东南亚数百万用户改进定位

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10140090

Xiao Hu, Xiaochuan Gong, Xiaolong Ji, Chao Wei, Hann Lam Woo, Firdaus Kiagos, Yanjin Li, Chunda Ding, Minbo Qiu, Bo Hu

{"title":"Implementation of real-time RTK/DGNSS on smartphones and positioning improvement for millions of users in Southeast Asia","authors":"Xiao Hu, Xiaochuan Gong, Xiaolong Ji, Chao Wei, Hann Lam Woo, Firdaus Kiagos, Yanjin Li, Chunda Ding, Minbo Qiu, Bo Hu","doi":"10.1109/PLANS53410.2023.10140090","DOIUrl":"https://doi.org/10.1109/PLANS53410.2023.10140090","url":null,"abstract":"Grab is Southeast Asia's leading superapp that provides everyday services like Deliveries, Mobility, Financial Services, and more. Location information is the backbone of our services, hence poor GNSS quality hurts our users' experience, especially our driver partners. The objective of this work is to explore the possibility of achieving precise positioning by implementing RTK/DGNSS on Android smartphones. In this contribution, we proposed a new service structure and pipeline to upload the GNSS raw measurements from the phone to the back end, the algorithm can support multiple users to conduct the RTK/DGNSS calculation concurrently. Road tests in different environments were conducted to evaluate the performance of our proposed methodology, and a study on the comparison between native mobile phone location output and our positioning service was done. The results show that in open sky scenarios, our algorithm performs much better than the native Android location, which confirms the interest of using the RTK/DGNSS to improve the positioning accuracy on Android devices for real business usage.","PeriodicalId":344794,"journal":{"name":"2023 IEEE/ION Position, Location and Navigation Symposium (PLANS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128487912","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}

引用次数: 0

Resiliency Characterization of Navigation Systems for Intelligent Transportation Applications 智能交通应用导航系统的弹性特性

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10139994

H. Wassaf, J. Rife, K. V. Dyke

{"title":"Resiliency Characterization of Navigation Systems for Intelligent Transportation Applications","authors":"H. Wassaf, J. Rife, K. V. Dyke","doi":"10.1109/PLANS53410.2023.10139994","DOIUrl":"https://doi.org/10.1109/PLANS53410.2023.10139994","url":null,"abstract":"Automated Driving Systems (ADS) are expected to be an integral component of a future safe and efficient intelligent transportation system. ADSs assume strategic and tactical maneuvering decisions, and associated vehicle control functions traditionally performed by human drivers. Navigation systems supporting this high level of automation are safety critical and must meet requirements imposed by the use-case nominal operation conditions. These systems must also be resilient to certain intentional and unintentional threats encountered during operation. While there have been past and ongoing efforts to determine PNT safety performance needs, an approach to quantify navigation system resiliency to intentional threats is still lacking. In this paper we develop such approach and introduce two resiliency metrics to quantitatively assess automated vehicle performance, with a primary focus on ADS with SAE Automation Level 4 (L4). Our resiliency metrics build on formal definitions of integrity, accuracy, availability, and continuity, adapting concepts used in commercial aviation to also apply to road applications. In our analysis, the key is to distinguish faults (for which a prior probability can be defined) from threats (for which a prior cannot be defined). A simulation of an ADS L4 multilane highway application with vehicle-to-vehicle and vehicle-to-infrastructure communication quantitatively demonstrates how our proposed approach allows for safe operation during a time-limited transition immediately after the introduction of a threat and also for persistent threats (via reduced capacity mitigation). This simulation will also illustrate how, for a particular navigation system, the two complementary resiliency metrics can be used to quantify the increased risk during the time-limited transition as well as the capacity degradation level for safe steady state safe operations.","PeriodicalId":344794,"journal":{"name":"2023 IEEE/ION Position, Location and Navigation Symposium (PLANS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129171121","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}

引用次数: 0

Quality of Service Based Radar Resource Management for Navigation and Positioning 基于服务质量的导航定位雷达资源管理

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10140094

Tobias Müller, Sebastian Durst, Pascal Marquardt, S. Brüggenwirth

引用次数: 0

A Sub-meter Accurate Positioning using 5G Double-difference Carrier Phase Measurements 利用5G双差载波相位测量实现亚米级精确定位

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10139995

Chengming Jin, Wee Peng Tay, K. Zhao, Keck Voon Ling, Jun Lu, Yue Wang

{"title":"A Sub-meter Accurate Positioning using 5G Double-difference Carrier Phase Measurements","authors":"Chengming Jin, Wee Peng Tay, K. Zhao, Keck Voon Ling, Jun Lu, Yue Wang","doi":"10.1109/PLANS53410.2023.10139995","DOIUrl":"https://doi.org/10.1109/PLANS53410.2023.10139995","url":null,"abstract":"Apart from communications, the Fifth Generation (5G) technology is also motivated by positioning requirements down to the sub-meter level across industry verticals. In this work, we utilize Universal Software Radio Peripheral to transmit and receive the 5G New Radio signals. The obtained samples are then processed by the proposed 5G code and carrier phase software defined receiver. In this process, the dedicated 5G Positioning Reference Signal (PRS) is adopted to obtain time of arrival estimates using more accurate carrier phase measure-ments instead of code phase measurements. The continuously transmitted 5G PRSs over time enable accurate carrier phase tracking and avoid ambiguity problems during the tracking stage in line-of-sight environments. Furthermore, a roadside unit is set up to observe the same signals and cancel out the measurement error introduced by the clock offset between two transmitters. Finally, some field experiments are carried out, and the experimental results indicate that using 5G double-difference carrier phase measurements from only four transmitters, a position root mean square error of 0.790m is achievable.","PeriodicalId":344794,"journal":{"name":"2023 IEEE/ION Position, Location and Navigation Symposium (PLANS)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117158681","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}

引用次数: 0

Machine learning assisted multipath signal parameter estimation and its evaluation under weak signal environment 弱信号环境下机器学习辅助多径信号参数估计及其评估

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10140113

Xin Qi, Bing Xu

引用次数: 0

Dual-Satellite Geolocation of Terrestrial GNSS Jammers from Low Earth Orbit 低地球轨道GNSS干扰机的双星定位

2023 IEEE/ION Position, Location and Navigation Symposium (PLANS) Pub Date : 2023-04-24 DOI: 10.1109/PLANS53410.2023.10140058

Zachary Clements, T. Humphreys, P. Ellis

{"title":"Dual-Satellite Geolocation of Terrestrial GNSS Jammers from Low Earth Orbit","authors":"Zachary Clements, T. Humphreys, P. Ellis","doi":"10.1109/PLANS53410.2023.10140058","DOIUrl":"https://doi.org/10.1109/PLANS53410.2023.10140058","url":null,"abstract":"This paper explores two-step and direct geolocation of terrestrial Global Navigation Satellite System (GNSS) jammers from Low Earth Orbit (LEO). Within the past decade, there has been a sharp increase in GNSS outages due to deliberate GNSS jamming. Receivers in LEO are uniquely situated to detect, classify, and geolocate terrestrial GNSS jammers. The conventional two-step geolocation method first estimates the differential delay and differential Doppler, then uses a time history of these to estimate the transmitter location. By contrast, direct geolocation is a single-step search over a geographical grid that enables estimation of the transmitter location directly from the observed signals. Signals from narrowband, matched-code, and chirp jammers recently captured in the GNSS frequency bands by two time-synchronized LEO receivers over the Eastern Mediterranean are analyzed and the emitters geolocated. It is demonstrated that the direct approach is effective even for low signal-to-noise ratio interference signals based on short captures with multiple emitters. Moreover, the direct approach enables geolocation of multiple emitters with cyclostationary signals (e.g., chirp jammers), whereas the two-step method struggles in such cases to associate emitters with their corresponding structures in differential delay and Doppler space.","PeriodicalId":344794,"journal":{"name":"2023 IEEE/ION Position, Location and Navigation Symposium (PLANS)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115288482","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}

引用次数: 0