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International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)最新文献

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WLAN and RFID Propagation channels for hybrid indoor positioning 用于混合室内定位的无线局域网和射频识别传播信道
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934184
E. Lohan, K. Koski, J. Talvitie, L. Ukkonen
{"title":"WLAN and RFID Propagation channels for hybrid indoor positioning","authors":"E. Lohan, K. Koski, J. Talvitie, L. Ukkonen","doi":"10.1109/ICL-GNSS.2014.6934184","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934184","url":null,"abstract":"Indoor localization based on Received Signal Strengths (RSS) or on some form of power measurements is a low-cost and low-complexity solution gaining more and more interest in the research and commercial worlds. Typically, Wireless Local Area Network (WLAN) signals are employed for such purpose, due to the fact that they are widely spread in indoor environments. Nevertheless, any wireless signal available in indoor scenarios can be used for positioning based on similar power measurement approaches. One example is the radio frequency identification (RFID), which enable portable localization systems in the form of wearable RFID tags. Such RFID-enabled systems are highly demanded for health-state monitoring, object tracking, and security. These applications are mostly indoor applications, and thus, we can envision a near future where multiple RFID and WLAN signals will co-exist on multiple frequency bands. The existing signal diversity can offer a benefit in indoor positioning, providing that the signal propagation effects for both WLAN and RFID are well understood and taken into account. However, measurement-based studies on indoor channel modeling, including path loss and shadowing effects of RFID signals are still missing. A comparison between RFID and WLAN channel models for positioning purpose has yet to be made. It is the purpose of our paper to address the path-loss channel models and shadowing effects for WLAN and RFID signals based on extensive measurement campaigns in an office environment.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125044656","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: 38
Area estimation of time-domain GNSS receiver architectures 时域GNSS接收机结构的面积估计
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934163
V. Eerola, J. Nurmi
{"title":"Area estimation of time-domain GNSS receiver architectures","authors":"V. Eerola, J. Nurmi","doi":"10.1109/ICL-GNSS.2014.6934163","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934163","url":null,"abstract":"This paper presents the silicon area estimation of three different GNSS receiver architectures with the analysis of four different use cases. The receivers are based on traditional correlator, matched filter, and group correlator architectures. While introducing the selected test cases, the authors discuss their applicability for real-life receiver operations. The receiver architectures are described shortly and the implementation details explained. The comparison shows that the correlator based receiver suits best for tracking while matched filters are efficient only for pure search mode. The group correlator offers a good area-efficiency in both tracking and search modes.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126062233","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
Context-aware peer-to-peer and cooperative positioning 上下文感知点对点和协作定位
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934166
F. Dovis, C. Chiasserini, L. Musumeci, C. Borgiattino
{"title":"Context-aware peer-to-peer and cooperative positioning","authors":"F. Dovis, C. Chiasserini, L. Musumeci, C. Borgiattino","doi":"10.1109/ICL-GNSS.2014.6934166","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934166","url":null,"abstract":"Peer-to-peer and cooperative positioning represent one of the major evolutions for mass-market positioning, bringing together capabilities of Satellite Navigation and Communication Systems. It is well known that smartphones already provide user position leveraging both GNSS and information collected through the communication network (e.g., Assisted-GNSS). However, exploiting the exchange of information among close users can attain further benefits. In this paper, we deal with such an approach and show that sharing information on the environmental conditions that characterize the reception of satellite signals can be effectively exploited to improve the accuracy and availability of user positioning. This approach extends the positioning service to indoor environments and, in general, to any scenario where full visibility of the satellite constellation cannot be granted.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129034153","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: 8
Proposed architecture for integrity monitoring of a GNSS/MEMS system with a Fisheye camera in urban environment 提出了一种基于鱼眼摄像机的城市环境GNSS/MEMS系统完整性监测体系结构
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934179
Enik Shytermeja, A. G. Pena, O. Julien
{"title":"Proposed architecture for integrity monitoring of a GNSS/MEMS system with a Fisheye camera in urban environment","authors":"Enik Shytermeja, A. G. Pena, O. Julien","doi":"10.1109/ICL-GNSS.2014.6934179","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934179","url":null,"abstract":"Recently, an increasing trend of GNSS-based Safety Critical (SC) or Liability Critical (LC) urban applications has been observed. These applications, associated to dense urban canyons, can have very stringent requirements in terms of accuracy, reliability and availability of the provided position solution. In this paper, the implementation of a step-by-step algorithm able to ensure the robustness and integrity monitoring of an integrated GPS/Galileo receiver with low-cost MEMS sensors and aided by the video Fisheye camera is proposed.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114858635","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: 27
Estimation of heading misalignment between a pedestrian and a wearable device 行人与可穿戴设备方向不对准的估计
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934170
Abdelrahman Ali, J. Georgy, D. B. Wright
{"title":"Estimation of heading misalignment between a pedestrian and a wearable device","authors":"Abdelrahman Ali, J. Georgy, D. B. Wright","doi":"10.1109/ICL-GNSS.2014.6934170","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934170","url":null,"abstract":"The wearable devices market has witnessed major technological advancements in recent years. These achievements have greatly increased their ability to be involved in applications such as location-based services (LBS), portable navigation, and guidance applications. In certain applications, providing a navigation solution based on inertial sensors stand-alone requires the user to keep the portable device in a specific orientation with respect to the user's body. It is unreasonable to assume that the device will remain in a fixed orientation all the time. In this paper, a technique is proposed to provide the heading misalignment angle between the wearable smart device and the pedestrian. Different test scenarios were conducted to assess the performance of the proposed technique including different use cases. The results show that the proposed technique is able to provide continuous and reliable consumer localization without any restrictions on the way the user holds or uses the device.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134132899","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: 5
The effect of coverage gaps and measurement inaccuracies in fingerprinting based indoor localization 覆盖间隙和测量误差对指纹室内定位的影响
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934181
J. Talvitie, E. Lohan, M. Renfors
{"title":"The effect of coverage gaps and measurement inaccuracies in fingerprinting based indoor localization","authors":"J. Talvitie, E. Lohan, M. Renfors","doi":"10.1109/ICL-GNSS.2014.6934181","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934181","url":null,"abstract":"In this paper we estimate the effect of coverage gaps and inaccurate Received Signal Strength (RSS) values in fingerprinting based indoor localization using Wireless Local Area Networks (WLAN). The results are based on extensive measurement campaign including two multi-storey buildings with over 700 found WLAN access points in total. We introduce a novel randomized method to artificially create realistic coverage gaps in the database. It is further emphasized that a realistic fingerprint removal process for modeling coverage gaps cannot be based in uniformly distributed probability density function. User positioning performance between the original database and the partial database is compared using the well-known K-Nearest Neighbor (KNN) algorithm. In addition, we model RSS inaccuracies in the database originated from badly calibrated learning data or from a constant bias between learning data collection devices and the device used for positioning. The effect of coverage gaps and RSS inaccuracies on the user positioning accuracy is studied in terms of average horizontal positioning error and in average floor detection probability over several user tracks and randomized removal processes. The presented results and the provided methodology allow error dimensioning of collected learning data and assist in planning measurement campaigns in future indoor positioning studies.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133507510","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: 25
A multi-state notch filter for GNSS jamming mitigation 用于GNSS干扰抑制的多状态陷波滤波器
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934175
D. Borio
{"title":"A multi-state notch filter for GNSS jamming mitigation","authors":"D. Borio","doi":"10.1109/ICL-GNSS.2014.6934175","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934175","url":null,"abstract":"Adaptive notch filters have been proven to be effective solutions for mitigating the impact of jamming and extending the operational capabilities of GNSS receivers. In this paper, a multi-state model is at first proposed for the characterization of jamming signals. In particular, jamming signals can move outside the input band of the victim receiver and their instantaneous frequency can be affected by abrupt jumps. These features are accounted for in the multi-state model which is used to design a new class of adaptive notch filters able to cope with the state transitions of the jamming signal. The adaptive notch filter proposed has been designed to be computationally efficient and to track the fast frequency variations of a jamming signal. The performance of the technique proposed is experimentally studied using a real cigarette lighter jammer and a custom software receiver. The tests show the benefits of the notch filter proposed.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114347367","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: 23
Faster than real-time GNSS receiver testing 比实时GNSS接收机测试更快
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934172
T. Paakki, J. Nurmi
{"title":"Faster than real-time GNSS receiver testing","authors":"T. Paakki, J. Nurmi","doi":"10.1109/ICL-GNSS.2014.6934172","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934172","url":null,"abstract":"The new GNSS systems available present possibilities and challenges in the design of modern GNSS receivers. As a part of this challenge, receiver testing is always very important aspect. Careful testing procedures tend to be slow and tedious. In this paper we present a method for speeding up the test process without limiting the testing capabilities. The proposed method is only applicable to testing performed on recorded GNSS data. In this method the recorded data is streamed as fast as possible, without being bound by normal GNSS data rates. Utilizing this kind of architecture on a GNSS receiver can cut the time spent in the testing process by 70% or more, depending on the computational performance of the GNSS receiver platform. Speeding up the test phase of a GNSS receiver is beneficial for both academic and commercial entities, allowing time to be spent on other tasks.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"334 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114809024","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
Application of the Hill-Clohessy-Wiltshire equation in GNSS orbit prediction Hill-Clohessy-Wiltshire方程在GNSS轨道预测中的应用
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934162
Xiaolong Zhang, R. Piché
{"title":"Application of the Hill-Clohessy-Wiltshire equation in GNSS orbit prediction","authors":"Xiaolong Zhang, R. Piché","doi":"10.1109/ICL-GNSS.2014.6934162","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934162","url":null,"abstract":"We present an initial state correction algorithm for GNSS orbit prediction that uses the solution of the Hill-Clohessy-Wiltshire equation to build the Jacobian matrix. This algorithm improves the accuracy of GNSS orbit prediction through adding one or more observations. In the tests of 14 days orbit prediction, by adding one broadcast ephemeris as an observation collected before the initial BE with a long enough interval, we get orbit-only User Range Error within 70 meters, and orbit errors in the radial direction is less than 15 meters. In tangential direction, the error is within 400 meters.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125307492","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
Delay estimation for DVB-T signals in adverse multipath scenarios 不利多径条件下DVB-T信号的时延估计
International Conference on Localization and GNSS 2014 (ICL-GNSS 2014) Pub Date : 2014-06-24 DOI: 10.1109/ICL-GNSS.2014.6934167
Liang Chen, E. Lohan, O. Julien, P. Thevenon, C. Macabiau, L. Ruotsalainen, H. Kuusniemi
{"title":"Delay estimation for DVB-T signals in adverse multipath scenarios","authors":"Liang Chen, E. Lohan, O. Julien, P. Thevenon, C. Macabiau, L. Ruotsalainen, H. Kuusniemi","doi":"10.1109/ICL-GNSS.2014.6934167","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2014.6934167","url":null,"abstract":"Timing approaches, such as time of arrival (TOA) and time difference of arrival (TDOA), employed with DVB-T are sensitive to the presence of multipath errors. This paper studies the delay estimation in adverse multipath scenarios using the DVB-T signals. A data-directed delay tracking mechanism is presented for signal tracking to estimate the time delay. Three different delay locked loops (DLLs) are considered to mitigate the multipath errors, i.e. the early minus late (EML), the narrow EML (nEML) and the High Resolution Correlator (HRC). Simulation results are compared for tracking the DVB-T signals in the suggested Rice and Rayleigh channels. Simulation results show that the correlation outputs of the DVB-T signals are relatively smooth, which cause the DLLs difficulty to detect the closely spaced multipaths. For tracking the first peak of the correlation, HRC and nEML are better than EML.","PeriodicalId":348921,"journal":{"name":"International Conference on Localization and GNSS 2014 (ICL-GNSS 2014)","volume":"430 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126096135","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
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