2018 European Navigation Conference (ENC)最新文献_第2页

A comparison between resistant GNSS positioning techniques in harsh environment 恶劣环境下抗GNSS定位技术的比较

2018 European Navigation Conference (ENC) Pub Date : 2018-05-14 DOI: 10.1109/EURONAV.2018.8433232

A. Angrisano, S. Gaglione, A. Maratea

{"title":"A comparison between resistant GNSS positioning techniques in harsh environment","authors":"A. Angrisano, S. Gaglione, A. Maratea","doi":"10.1109/EURONAV.2018.8433232","DOIUrl":"https://doi.org/10.1109/EURONAV.2018.8433232","url":null,"abstract":"Environments as urban areas are critical for GNSS, because several obstacles block, attenuate and distort the signals; consequently, frequent blunders are present among the measurements and their effect on the position could be harmful. Two approaches are usually adopted to tackle the blunder issue, RAIM and robust estimation, and both are effective in case of high redundancy and single blunders. An alternative method, based on bootstrapping, i.e. random sampling with replacement, the available measurements, has recently emerged. The performance of the considered methods could be augmented by exploiting suitable measurement error models, which are used to differently weighting the measurements in RAIM and robust estimators, and to defining not uniform sampling probabilities in bootstrap; several models, based on the most common measurement quality indicators, carrier-to-noise ratio and satellite elevation, are herein analyzed. In this work, the three techniques, coupled with several error models, are compared in terms of mean, RMS and maximum position errors, processing data from urban scenario. The results demonstrate the best performance of bootstrap method, which works effectively in case of multiple blunders and/or the lack of redundancy, when RAIM and robust techniques are often unsuccessful. Moreover, the results highlight the importance of a careful choice of a measurement error model.","PeriodicalId":434266,"journal":{"name":"2018 European Navigation Conference (ENC)","volume":"9 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123778495","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: 2

Study on Method of Laser Time and Frequency Transfer Between Satellite and Ground Station 卫星与地面站间激光时频传输方法研究

2018 European Navigation Conference (ENC) Pub Date : 2018-05-14 DOI: 10.1109/EURONAV.2018.8433234

Guoyong Wang, Y. Meng, Lang Bian, Yuanbo Yao, T. Yan, Wenying Lei

引用次数: 0

Motion Conflict Detection in the Smart Tachograph 智能行车记录仪中的运动冲突检测

2018 European Navigation Conference (ENC) Pub Date : 2018-05-14 DOI: 10.1109/EURONAV.2018.8433238

D. Borio, E. Cano, G. Baldini

引用次数: 1

Improvement of GPS and BeiDou extended orbit predictions with CNNs 利用cnn改进GPS和北斗扩展轨道预测

2018 European Navigation Conference (ENC) Pub Date : 2018-05-01 DOI: 10.1109/EURONAV.2018.8433244

Jaakko Pihlajasalo, H. Leppäkoski, S. Ali-Löytty, R. Piché

引用次数: 8

Workload and navigational control : The control levels of COCOM as framework for ship bridge HMI design 工作负荷与导航控制:COCOM作为船桥人机界面设计框架的控制层次

2018 European Navigation Conference (ENC) Pub Date : 2018-05-01 DOI: 10.1109/EURONAV.2018.8433239

T. Porathe

引用次数: 0

Characterization of Range and Time Performance of Indoor GNSS Signals 室内GNSS信号的距离和时间特性

2018 European Navigation Conference (ENC) Pub Date : 2018-05-01 DOI: 10.1109/EURONAV.2018.8433236

T. Marathe, A. Broumandan, A. Pirsiavash, G. Lachapelle

{"title":"Characterization of Range and Time Performance of Indoor GNSS Signals","authors":"T. Marathe, A. Broumandan, A. Pirsiavash, G. Lachapelle","doi":"10.1109/EURONAV.2018.8433236","DOIUrl":"https://doi.org/10.1109/EURONAV.2018.8433236","url":null,"abstract":"Small cells are now widely used to provide indoor wireless services and are gaining further importance as technology enablers for emerging applications. These techniques rely on accurate synchronization of signals broadcast from neighboring base stations. Therefore, the latters must have access to reliable and accurate time reference. GNSS signals can be used to provide a reliable global time reference in open sky conditions. However, owing to low levels of signals indoors, the detection and processing of these signals and obtaining an accurate time indoors are still a challenge. It is assumed that accurate position estimates are known for indoor static applications which are obtained either using GNSS or other indoor positioning technologies. Under this assumption, fine timing solution can be provided with reliable single satellite information. As such this paper characterizes GPS based measurement and timing accuracies for indoor signals. This study specifically focuses on assessing range and timing accuracies for static indoor locations. Actual GPS data was collected at two indoor sites having different indoor characteristics for duration of more than ten minutes at each site. Assuming a known user position, measurement accuracies are analyzed over time while simultaneously observing received signal power. Ranging (timing) accuracy in the order of 10 m (30 ns) was achievable for the indoor scenarios considered. Finally, to assess the capability of indoor measurements to sustain good time synchronization accuracy over a longer duration, two-minute data segments were collected at intervals of 30 minutes for three hours. The time variations of the pseudorange (time) and position errors are studied.","PeriodicalId":434266,"journal":{"name":"2018 European Navigation Conference (ENC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134263409","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: 2

Minimum Detectable Velocity Based on GNSS Doppler Phase Observables 基于GNSS多普勒相位观测的最小可探测速度

2018 European Navigation Conference (ENC) Pub Date : 2018-05-01 DOI: 10.1109/EURONAV.2018.8433228

Roland Hohensinn, A. Geiger, M. Meindl

引用次数: 5

Modulation and Signal-Processing Tradeoffs for Reverse-GPS Wildlife Localization Systems 反向gps野生动物定位系统的调制和信号处理权衡

2018 European Navigation Conference (ENC) Pub Date : 2018-05-01 DOI: 10.1109/EURONAV.2018.8433240

A. Leshchenko, Sivan Toledo

{"title":"Modulation and Signal-Processing Tradeoffs for Reverse-GPS Wildlife Localization Systems","authors":"A. Leshchenko, Sivan Toledo","doi":"10.1109/EURONAV.2018.8433240","DOIUrl":"https://doi.org/10.1109/EURONAV.2018.8433240","url":null,"abstract":"Reverse-GPS wildlife localization systems are emerging as a key technology for regional high-throughput wildlife tracking. Two such systems have been designed, implemented, and deployed (in six sites on three continents). Both of the existing systems suffer from limitations due to the modulation that is used by transmitters, which are attached to wild animals, and due to the detection and estimation algorithms that they use to detect transmissions and estimate their arrival times. This paper investigates key tradeoffs associated with three different modulation schemes that wildlife tags can plausibly use. The factors that we investigate include the ability to detect weak signals from distant tags, the ability to accurately estimate the time-of-arrival at a given SNR, and the computational cost of these detection and estimation algorithms. Our key contributions are (1) evidence that BPSK modulation is superior in essentially all relevant metrics, except perhaps chip availability, to FSK and OOK; (2) evidence that OOK is a second-best choice and its main drawback is poor performance under interference from other tags; (3) algorithms to inexpensively search the frequency-delay space at moderate and high SNRs. We also report on implementation efforts designed to integrate robust processing of BPSK tags into a wildlife tracking system.","PeriodicalId":434266,"journal":{"name":"2018 European Navigation Conference (ENC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126776375","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

Design Analysis of a Hyperbolic Landing Navigation System for Aircraft 飞机双曲型着陆导航系统设计分析

2018 European Navigation Conference (ENC) Pub Date : 2018-05-01 DOI: 10.1109/EURONAV.2018.8433225

Thanh Bang Le, P. Makula, J. Bajer, M. Richterová

引用次数: 1

Robust radio localization with FLIP 利用FLIP实现鲁棒无线电定位

2018 European Navigation Conference (ENC) Pub Date : 2018-05-01 DOI: 10.1109/EURONAV.2018.8433241

Reinhard Müllner, Thomas Burgess

{"title":"Robust radio localization with FLIP","authors":"Reinhard Müllner, Thomas Burgess","doi":"10.1109/EURONAV.2018.8433241","DOIUrl":"https://doi.org/10.1109/EURONAV.2018.8433241","url":null,"abstract":"Radio fingerprinting based localization relies on comparing observations to a database of reference radio fingerprint point data. For complex buildings these databases can be very large. As mobile devices have limitations in storage capacity, working memory, processing speed, and power usage, making an on-terminal system that works well even in large installations is challenging. Moreover, the reported Received Signal Strength Indication (RSSI) scale often differ between devices, so that naive approaches for fingerprint similarity easily can fail to produce reliable results. In this paper, FLexible Indoor Position (FLIP) is presented to address these issues. It provides efficient device independent positioning even in complex buildings, while also taking inhomogeneous transmitter power levels and radio map irregularities into consideration. Despite plain accuracy not being the main goal of FLIP, when it was evaluated on the raw UJIIndoorLoc WiFi database it yielded a median positioning error of 4.7 m (and above 93 % floor level/building identification success rate), which is competitive to other significantly more computation intense approaches. In commercial applications with dedicated iBeacon infrastructures, FLIP routinely reaches median errors below 2 m.","PeriodicalId":434266,"journal":{"name":"2018 European Navigation Conference (ENC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126464077","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