2020 European Navigation Conference (ENC)最新文献

Space Weather Bulletins as part of a User Test Campaign for GNSS service users 空间天气公告作为GNSS服务用户用户测试活动的一部分

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317461

C. Liber, E. D. Donder, A. Calegaro, S. Chabanski, R. Vansintjan, J. O'Hara, A. Glover

引用次数: 0

Ziv-Zakai Bound and Multicorrelator Compression for a Galileo E1 Meta-Signal 伽利略E1元信号的Ziv-Zakai界和多相关器压缩

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317389

C. Schwalm, C. Enneking, S. Thoelert

引用次数: 0

Japanese GNSS Future System Evolution in the 2020–2030 Perspective 2020-2030年展望下日本GNSS未来系统演进

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317528

T. Sakai

引用次数: 0

Detection of GNSS Multipath with Time-Differenced Code-Minus-Carrier for Land-Based Applications 陆基差分码-载波GNSS多径检测

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317340

M. Caamano, Omar García Crespillo, Daniel Gerbeth, A. Grosch

引用次数: 13

Performance Evaluation Of Geodetic Real Time Kinematic Units Under Various Signal Reception Conditions 不同信号接收条件下大地测量实时运动单元的性能评价

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317459

Rebekka Handirk, A. Piter, André Jensen, Vanessa Koppmann, Julia Mainz, Christopher Nagel, Yannick Breva, Lucy Icking, Johannes Kröger, S. Schön

引用次数: 0

Positioning Approach for Train-Infrastructure Interaction Assets Health Status Monitoring 列车-基础设施交互资产健康状态监测定位方法

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317508

R. Moradi, M. Hutchinson, Yuheng Zheng, Michael Roth

{"title":"Positioning Approach for Train-Infrastructure Interaction Assets Health Status Monitoring","authors":"R. Moradi, M. Hutchinson, Yuheng Zheng, Michael Roth","doi":"10.23919/ENC48637.2020.9317508","DOIUrl":"https://doi.org/10.23919/ENC48637.2020.9317508","url":null,"abstract":"Railway infrastructure and vehicle maintenance costs are estimated at above 20,000M£ per year at European level. In this context, SIA (System for vehicle-infrastructure Interaction Assets health status monitoring) has the objective of developing new services to provide prognostic information about the health status of the railway's most demanding assets in terms of maintenance costs, at the points of the interaction between the vehicle and the infrastructure (wheelset, pantograph, rail and catenary). In SIA, events captured by a network of sensors are time-stamped and accurately positioned. The core positioning technique in SIA will be based on Global Navigation Satellite Systems (GNSS). Positioning using GNSS in the railway environment is very challenging due to events such as satellite masking, signal reflection problems (multipath) and the presence of interference. Hence, adaptation of a precise positioning algorithm tailored for the railway environment is essential in SIA. In such an algorithm, the availability and accuracy of the positioning can be improved by taking a multi-constellation approach (i.e. GPS plus GALILEO), using complementary sensors such as IMU and utilizing track map geometry characteristics. Such a positioning algorithm adopted for SIA and some preliminary results presented in this paper.","PeriodicalId":157951,"journal":{"name":"2020 European Navigation Conference (ENC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126801874","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

A Spaceborne GPS Receiver for Electric Propulsion Driven Geosynchronous Satellites 用于电力推进地球同步卫星的星载GPS接收机

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317499

Y. Nakajima, Toru Yamamoto, R. Harada, Satoko Kawakami, Susumu Kumagai

{"title":"A Spaceborne GPS Receiver for Electric Propulsion Driven Geosynchronous Satellites","authors":"Y. Nakajima, Toru Yamamoto, R. Harada, Satoko Kawakami, Susumu Kumagai","doi":"10.23919/ENC48637.2020.9317499","DOIUrl":"https://doi.org/10.23919/ENC48637.2020.9317499","url":null,"abstract":"This paper presents the latest GPS receiver developed by JAXA and NEC Space Technologies, Ltd. for satellites in geosynchronous orbit. This is the first attempt by a Japanese GPS receiver to use GPS signals above the GPS constellation of satellites. The expected signal strength is weaker at geosynchronous orbit than that observed at low Earth orbit. A new GPS receiver was developed to receive such signals and determine satellite position, by improving sensitivity and optimized software for GEO. In addition, signals received at GEO transfer phase has various doppler frequency and signal strength. This characteristic increase acquisition time of the receiver, thus the acquisition algorithm was modified to optimize during the transfer phase. This paper introduces the newly developed GPS receiver for geosynchronous satellites and its performance obtained by experiments using GNSS simulator. The results indicated that the GEO GPSR could determine its position within a few meters error at GEO. GEO GPS receiver could not be used whole transfer phase, but it could output its position at least once in every orbit around perigee. This result indicated that the GEO GPS receiver will help raising orbit.","PeriodicalId":157951,"journal":{"name":"2020 European Navigation Conference (ENC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128145078","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: 1

Integrity Concept for Sensor Fusion Algorithms used in a Prototype Vehicle for Automated Driving 用于自动驾驶原型车的传感器融合算法的完整性概念

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317323

Grischa Gottschalg, M. Becker, S. Leinen

引用次数: 2

Robust Satellite Navigation in the Android Operating System using the Android Raw GNSS Measurements Engine and Location Providers 使用Android Raw GNSS测量引擎和位置提供程序的Android操作系统中的稳健卫星导航

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317434

D. Miralles, D. Akos, Dong-Kyeong Lee, A. Konovaltsev, L. Kurz, S. Lo

{"title":"Robust Satellite Navigation in the Android Operating System using the Android Raw GNSS Measurements Engine and Location Providers","authors":"D. Miralles, D. Akos, Dong-Kyeong Lee, A. Konovaltsev, L. Kurz, S. Lo","doi":"10.23919/ENC48637.2020.9317434","DOIUrl":"https://doi.org/10.23919/ENC48637.2020.9317434","url":null,"abstract":"Reliable radio satellite navigation is of extreme importance globally. Currently modern societies rely on GNSS-related technologies for a range of applications including agricultural, financial, transportation, and military applications. As such, providing navigation, specifically within the Android environment, with the tools to combat the threat presented by malicious spoofing or jamming attacks is critical to keep its dependence on GNSS functional. This proposal aims to introduce GNSSalarm, a set of algorithms based on resources already within Android OS, and develops an effective anti-spoofing, anti-jamming solution that will allow proper functionality when in the presence of these malicious attacks. GNSSAlarm will detect spoofing or jamming attacks by monitoring alarm triggers set by a combination of measurements, including but not limited to (1) network location metrics, (2) combined AGC and C/N0 readings, (3) external aiding information data, and (4) pseudorange residual metrics. After spoofing or jamming is detected, GNSSalarm will alert the user of the situation and will attempt to continue to provide its position solution by using any of the remaining constellations measurements offered in the new raw GNSS engine supported by Android.","PeriodicalId":157951,"journal":{"name":"2020 European Navigation Conference (ENC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130276171","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: 4

Precise Point Positioning for Next-Generation GNSS 下一代GNSS的精确点定位

2020 European Navigation Conference (ENC) Pub Date : 2020-11-23 DOI: 10.23919/ENC48637.2020.9317475

P. Henkel

{"title":"Precise Point Positioning for Next-Generation GNSS","authors":"P. Henkel","doi":"10.23919/ENC48637.2020.9317475","DOIUrl":"https://doi.org/10.23919/ENC48637.2020.9317475","url":null,"abstract":"Precise Point Positioning (PPP) provides accurate absolute position information without the direct need of measurements from a reference station at the user. The current challenge of GPS L1/L2-based PPP is its long convergence time of more than 20 minutes being caused by the need to estimate atmospheric parameters, and the relatively large code noise and multipath errors. There are two options to reduce the convergence time of PPP: First, the Galileo wideband signals on E5 and E6 have a much lower code noise than current GPS L1 and L2 pseudoranges. Second, the satellite positions and satellite-related biases can be determined much faster and more accurately with optical inter-satellite links supporting ranging, time-transfer and intra-system communication. In this paper, we consider both options. A joint estimation of the receiver position, receiver clock offset, tropospheric zenith delay, ionospheric slant delays and carrier phase ambiguities is performed with a Kalman filter. Orbital errors and pseudo range multipath are also taken into account. The float carrier phase ambiguity estimates are mapped to integers using the famous Least-Squares Ambiguity Decorrelation Adjustment (LAMBDA) method. The simulation results show that an ambiguity fixing and, thereby, a highly-accurate PPP solution, can be achieved consistently within a few epochs. This is a quite substantial benefit and could make PPP attractive for numerous applications.","PeriodicalId":157951,"journal":{"name":"2020 European Navigation Conference (ENC)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134125720","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: 1