发布求助
文献互助 智能选刊 最新文献

2007 4th Workshop on Positioning, Navigation and Communication最新文献

筛选
英文 中文
Cognitive Resource Access Scheme for IR-UWB Autonomous Networks IR-UWB自治网络的认知资源接入方案
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353644
M. Guirao, K. Jobmann
{"title":"Cognitive Resource Access Scheme for IR-UWB Autonomous Networks","authors":"M. Guirao, K. Jobmann","doi":"10.1109/WPNC.2007.353644","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353644","url":null,"abstract":"This paper introduces a novel MAC strategy, which flexibly configures the error protection level and the average pulse period per link to control the shared medium utilization in an IR-UWB network. This strategy deviates from recent research efforts towards access schemes based on IEEE 802.15.4 MAC and exploits research results of game theory and cognitive radio.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122704125","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: 6
Field Trial on the Efficiency and User Experience of GPS based State of the Art navigational Systems for Pedestrians 基于GPS的最先进行人导航系统效率和用户体验的现场试验
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353623
Marko Modsching, R. Kramer, Marcel Riebeck, Annegret Stark, Klaus ten Hagen, J. Kawalek
{"title":"Field Trial on the Efficiency and User Experience of GPS based State of the Art navigational Systems for Pedestrians","authors":"Marko Modsching, R. Kramer, Marcel Riebeck, Annegret Stark, Klaus ten Hagen, J. Kawalek","doi":"10.1109/WPNC.2007.353623","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353623","url":null,"abstract":"Context-enabled applications are more and more establishing on the market. A key feature for those tools is the ability to connect the current user state and position to possible activities nearby. Thus it is crucial to a mobile application to be able helping the tourists to find and guide them to appropriate activities. This paper will separately address the navigational component and evaluate the efficiency of several systems currently available. All of these systems are based on current state of the art approaches and are easily expandable to different locations meaning there isn't any adaptation needed, running the system in other cities. At the end the paper will come up with a recommendation for the most suited system to be integrated into mobile applications under current conditions.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125980265","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: 6
Pedestrian Navigation - Creating a tailored geodatabase for routing 行人导航-为路线创建一个定制的地理数据库
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353611
B. Elias
{"title":"Pedestrian Navigation - Creating a tailored geodatabase for routing","authors":"B. Elias","doi":"10.1109/WPNC.2007.353611","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353611","url":null,"abstract":"In this paper, we present an approach to generate a geodatabase accustomed to the specific needs of pedestrians for navigation applications. One of our goals is to use different existing geodatasets like topographic, cadastral and indoor vector map data and develop methods for deriving automatically an area-wide available geodata set adapted to the needs of pedestrians. Therefore, the data sources have to be investigated as to which parts of their content have relevance for the targeted user scenario. The important data parts are selected and furthermore analyzed with GIS techniques to derive new information. In a last step the separate data layers have to be merged into one geometrically consistent data set using conflation methods, so that a connected graph can be built up and used to compute pedestrian routes via shortest-path algorithms.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129904554","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: 39
Performance Analysis for a Body Area Network composed of IEEE 802.15.4a devices IEEE 802.15.a设备组成的体域网络性能分析
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353645
D. Domenicali, Maria-Gabriella Di Benedetto
{"title":"Performance Analysis for a Body Area Network composed of IEEE 802.15.4a devices","authors":"D. Domenicali, Maria-Gabriella Di Benedetto","doi":"10.1109/WPNC.2007.353645","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353645","url":null,"abstract":"Body area networks (BANs) are wearable wireless sensor networks with a high potential for medical and sports applications. BANs appear to be a particularly appealing solution to provide information about the health status of a patient in medical environments such as hospitals or medical centres.This work analyzes the behaviour of a BAN composed of IEEE 802.15.4a ultra wideband (UWB) sensors. A body area network architecture is proposed and investigated by simulation. Performance evaluation takes into account bit error rate as a function of the number of nodes forming the BAN and of the asynchronism level between them.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133271358","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: 37
Challenges for GNSS-based high precision positioning - some geodetic aspects 基于gnss的高精度定位面临的挑战——一些大地测量方面的问题
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353639
S. Schön, F. Dilßner
{"title":"Challenges for GNSS-based high precision positioning - some geodetic aspects","authors":"S. Schön, F. Dilßner","doi":"10.1109/WPNC.2007.353639","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353639","url":null,"abstract":"In geodesy, GNSS-based methods are widely used for positioning and navigation. Since the precision (< some mm) and accuracy (< 1 cm) requirements are very high, sophisticated correction models and analysis strategies were developed, e.g. like the network RTK concept realised in different active permanent reference station networks. However, multipath and signal diffraction as well as the incomplete stochastic model for GNSS observations limits still the attainable accuracy and precision, especially for real time applications. In this paper, we focus on multipath and diffraction mitigation. The state of the art procedures for mitigation are revisited as well as the challenges for new strategies are addressed and explained using examples from the Satellite Positioning Service of the German National Survey (SAPOS) and from typical geodetic monitoring networks. Finally the importance of a complete stochastic model for GPS observations for statistically tests and meaningful interpretations of the results is underlined.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121199129","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
Three frequency linear combinations for Galileo 伽利略的三种频率线性组合
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353640
P. Henkel, C. Günther
{"title":"Three frequency linear combinations for Galileo","authors":"P. Henkel, C. Günther","doi":"10.1109/WPNC.2007.353640","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353640","url":null,"abstract":"The consideration of linear combinations of phase measurements is an effective method for the resolution of carrier phase ambiguities. Examples of classical combinations are the super-widelane and widelane combinations. The main aspects are to increase the wavelength and to reduce the influence of the ionosphere, while keeping the noise amplification moderate. In the present paper, a new type of combinations is introduced. These combinations leave the geometry invariant. A particular class of such combinations is discrete and finite. An exhaustive search leads to interesting new widelane combinations. Some have very long wavelengths, e.g. 29.31 m. Others have excellent ionospheric suppression, e.g. 28.78 dB at a wavelength of 3.256 m. The best ionospheric suppression of 38.30 dB is obtained for a narrowlane combination with a wavelength of 2.69 cm.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115524293","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: 14
An Ultra-Wideband Positioning Demonstrator Using Audio Signals 一种基于音频信号的超宽带定位演示器
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353615
G. Bellusci, Junlin Yan, G. Janssen, C. Tiberius
{"title":"An Ultra-Wideband Positioning Demonstrator Using Audio Signals","authors":"G. Bellusci, Junlin Yan, G. Janssen, C. Tiberius","doi":"10.1109/WPNC.2007.353615","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353615","url":null,"abstract":"UWB technology has been recognized as an ideal candidate to provide positioning information in indoor environments. However, demonstrators useful to test UWB positioning algorithms are still difficult to realize due to the hardware requirements of this technology and the scarceness of components available in the market. For this reason, the use of an acoustic demonstrator is proposed. By scaling the frequencies with a specific factor, it is possible to obtain the same wavelengths for the audio signals as for the radio signals. In this way, similar interactions with the environment can be observed. A validation of this technique is provided, by analyzing and comparing the large scale statistics and the RMS delay spread of the channel impulse response obtained with the two types of signals, and the similarities and differences are underlined. Finally, first results on the TOA estimation accuracy for different propagation conditions and on the positioning performance achievable using audio signals are shown. With the proposed audio demonstrator an accuracy at centimeter level can be achieved for LOS propagation.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125850441","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: 9
WLAN indoor positioning based on TOA with two reference points 基于两个参考点TOA的WLAN室内定位
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353607
M. Ciurana, S. Cugno, F. Barceló
{"title":"WLAN indoor positioning based on TOA with two reference points","authors":"M. Ciurana, S. Cugno, F. Barceló","doi":"10.1109/WPNC.2007.353607","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353607","url":null,"abstract":"This paper presents a new approach to providing accurate pedestrian indoor positioning using a Time of Arrival (TOA) based technique, when only two access points in an IEEE 802.11 network are in range of a mobile terminal to be located. This allows to enhance the availability and reliability of the positioning system, because existing trilateration-and tracking-based systems require at least three reference points to provide 2D positions. This contribution demonstrates the feasibility of the technique proposed and presents encouraging performance figures obtained through simulations with real observable data.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131675775","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: 40
MAC Performances for Localization and Tracking in Wireless Sensor Networks 无线传感器网络中定位与跟踪的MAC性能
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353649
D. Macagnano, G. Destino, Flavio Esposito, G. Abreu
{"title":"MAC Performances for Localization and Tracking in Wireless Sensor Networks","authors":"D. Macagnano, G. Destino, Flavio Esposito, G. Abreu","doi":"10.1109/WPNC.2007.353649","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353649","url":null,"abstract":"Time delay rather then throughput, is a constraint of greater importance in tracking systems. In particular, the maximum accces delay permissible by the application ins strongly related to the dynamics of theracked objects. The purpose of this article is to study the performance of a new media access control (MAC) technology specifically suited for LDR UWB systems [3] under the point of view of a tracking application. Specifically, the time delay necessary to collect the ranging information in both, star and meshed topology networks, have been studied as function of the number of mobiles in the network. More importantly, we propose two new ranging packet to be used inside the aforementioned MAC, in order to achieve in both the network topologies, a clear advantage compared to the current solution.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124721643","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: 33
DLS: A Resource-Aware Localization Algorithm with High Precision in Large Wireless Sensor Networks 大型无线传感器网络中资源感知的高精度定位算法
2007 4th Workshop on Positioning, Navigation and Communication Pub Date : 2007-03-22 DOI: 10.1109/WPNC.2007.353641
F. Reichenbach, J. Salzmann, D. Timmermann, A. Born, R. Bill
{"title":"DLS: A Resource-Aware Localization Algorithm with High Precision in Large Wireless Sensor Networks","authors":"F. Reichenbach, J. Salzmann, D. Timmermann, A. Born, R. Bill","doi":"10.1109/WPNC.2007.353641","DOIUrl":"https://doi.org/10.1109/WPNC.2007.353641","url":null,"abstract":"One of the key issues in large wireless sensor networks is a precise position determination of every node with minimal hardware requirements and lowest energy consumption. Exact localization techniques, which are prone to input errors, are resource-intensive and not feasible on simple sensor nodes without adaptations. The key mechanism is to effectively split the complex computation and distribute the communication load across all nodes. Therefore, we present the \"distributed least squares\" (DLS)-algorithm. DLS is a resource-aware localization method that achieves 47% computation savings and 86% energy savings compared to the reference method, a \"fully distributed multilateration\" on every sensor node.","PeriodicalId":382984,"journal":{"name":"2007 4th Workshop on Positioning, Navigation and Communication","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124788926","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: 7
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信