Wireless local positioning - Concepts, solutions, applications

Vossiek, Martin; Wiebking, L.; Gulden, Peter; Weighardt, J.; Hoffmann, Clemens

doi:10.1109/rawcon.2003.1227932

Cited by 73 publications

(34 citation statements)

References 13 publications

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“…A descriptive overview and comparison of different communication technologies in terms of area coverage and accuracy can be found in Vossiek et al (2003), which also provides an overview of the different distance and location measurement methodologies.…”

Section: Positioning Systemsmentioning

confidence: 99%

Telematics for Efficient Transportation and Distribution of Agrifood Products

Marentakis

2011

Intelligent Agrifood Chains and Networks

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For the agrifood industry the issue of product traceability over the supply chain is of great importance. Agrifood product companies use various methods and technologies to safeguard product quality and their market reputation. Moreover, management of contemporary complex and rapidly changing logistics systems require high availability of real-time information about the position and state of a company's fleet and freight. Supply-chain management, and more specifically the freight transportation channel, is currently supported by technological innovations in information and communication technologies (ICT) in many ways, providing valuable information for carriers and shippers to manage fleets and goods effectively, and at the same time enhancing their capability of responding to changing customer requirements. ICT applications allow decision-makers and planners to effectively handle problems related to the daily operation of distribution centres, freight forwarding, urban distribution, long-haul freight transport, loading and unloading planning, route scheduling etc. The growing volume of data, coupled with the need for flexibility in daily operations, requires the support of suitable information technology. Recent advances in microelectronics and computing technology have enhanced the capability of electronic devices, for example display size, interfaces, portability and energy consumption. In addition, new portable devices (personal data assistants and personal navigation systems have been developed recently and do not require fixed installation in vehicles.Coherent combinations of ICT technologies and devices constitute specific classes of sophisticated information systems (typically referred to as 'telematics' or automatic vehicle location systems). These offer monitoring and interaction capabilities between fleet trucks, drivers and freight stakeholders at almost any level of management, covering the planning, the trip and route monitoring, and reporting needs. The need for ICT support in freight transport and distribution becomes even more important when transported goods are of high value, perishable, time-dependent, hazardous or related to just-in-time services for those companies aiming at supplying products in complex and continuously growing distribution networks. Typical examples of these are agricultural and food products. Such networks aim to deliver products to stores ranging from small retailers (offering a range of 1000-3000 stock keeping units (SKUs), 90% of which are agrifood products) to supermarkets (offering a range of 20 000-30 000 SKUs, 75-90% of which are agrifood products) and hypermarkets (offering Intelligent Agrifood Chains and Networks, First Edition. Edited by Michael Bourlakis, Ilias Vlachos and Vasileios Zeimpekis.

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Section: Positioning Systemsmentioning

confidence: 99%

Telematics for Efficient Transportation and Distribution of Agrifood Products

Marentakis

2011

Intelligent Agrifood Chains and Networks

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“…The positioning system methods can mainly be divided into three classes [26]: (1) Position based on signal propagation time works based on the relation between the distance and the signal propagation time, which can be summarized in the formula…”

Section: IImentioning

confidence: 99%

Investigating the Potential of LPS in Structural Health Monitoring

Casciati

2010

2010 International Conference on Computational Intelligence and Software Engineering

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In view of reconstructing the stress and strain fields inside the medium, non contact displacement sensors, like GPS (Global Positioning System) sensors, are preferable. Nevertheless, GPS has shortcomings in dense urban areas and inside the building, where it cannot deliver equal precision in all position components at any time. These remarks suggest to move to the study of Local Positioning Systems (LPS). In this paper, the principles of several distance measurement procedure are reviewed. Then, several ways used to reflect signal propagation time precisely are investigated. The available solutions, which include the carrier phase measurement, are discussed mainly in terms of measurement principle, measurement precision and covering range. At last, the ambiguity problem occurred in carrier phase measurement are covered.

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“…Numerous other location tracking technologies exist that provide absolute position estimations, e.g. radio frequency identification (RFID) tags [5] or wireless communication systems [6,7]. Generally these technologies rely on supporting infrastructure.…”

Section: Introductionmentioning

confidence: 99%

LuxTrace: indoor positioning using building illumination

Randall

Amft

Bohn

et al. 2007

Pers Ubiquit Comput

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Summary. Tracking location is challenging due to the numerous constraints of practical systems including, but not limited to, global cost, device volume and weight, scalability and accuracy; these constraints are typically more severe for systems that should be wearable and used indoors.We investigate the use of wearable solar cells to track changing light conditions (a concept that we named LuxTrace) as a source of user displacement and activity data. We evaluate constraints of this approach and present results from an experimental validation of displacement and activity estimation. The results indicate that a distance estimation accuracy of 21 cm (80% quantile) can be achieved.A simple method to combine LuxTrace with complementary absolute location estimation methods is also presented. We apply carpet-like distributed RFID tags to demonstrate online learning of new lighting environments.

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Wireless local positioning - Concepts, solutions, applications

Cited by 73 publications

References 13 publications

Telematics for Efficient Transportation and Distribution of Agrifood Products

Telematics for Efficient Transportation and Distribution of Agrifood Products

Investigating the Potential of LPS in Structural Health Monitoring

LuxTrace: indoor positioning using building illumination

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