Frequency Domain Analysis of UWB Channel Propagation in Underground Mines

Chehri, Abdellah; Fortier, Paul; Tardif, Pierre-Martin

doi:10.1109/vtcf.2006.24

Cited by 19 publications

(7 citation statements)

References 11 publications

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“…This technique is often employed with VNA measurements, e.g., [11]. Then the windowed transfer functions were inverse-Fourier-transformed to obtain CIRs.…”

Section: Power Delay Profilementioning

confidence: 99%

Modeling urban peer-to-peer channel characteristics for the 700 MHz and 4.9 GHz public safety bands

Gentile

Matolak

Remley

et al. 2012

2012 IEEE International Conference on Communications (ICC)

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We report on models developed for peer-to-peer (ground-based) wireless channels for an urban environment in the 700 MHz and 4.9 GHz bands, both allocated for public safety and "emergency responder" applications. Results are based upon measurements taken in downtown Denver, CO for link distances up to approximately 100 m. Heretofore, measurement-based models for an urban environment in these bands and for low antenna heights have not been developed. Our measurements employed a vector network analyzer, from which log-distance models for path loss and dispersive channel models have been extracted. Our dispersive channel models employ a statistical algorithm for the number of multipath components, previously used only in indoor settings. The channel models should be useful for public safety communication system designers.

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“…This technique is often employed with VNA measurements, e.g., [11]. Then the windowed transfer functions were inverse-Fourier-transformed to obtain CIRs.…”

Section: Power Delay Profilementioning

confidence: 99%

Modeling urban peer-to-peer channel characteristics for the 700 MHz and 4.9 GHz public safety bands

Gentile

Matolak

Remley

et al. 2012

2012 IEEE International Conference on Communications (ICC)

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“…The model accuracy then directly depends on the measurements frequency, the number of nodes and the precise knowledge of the nodes localization (e.g. achieved thanks to ultra-wide band techniques for very accurate positioning in harsh environments such as underground mines, as proposed in [29,30]). …”

Section: Concentration Profilesmentioning

confidence: 99%

Wireless ventilation control for large‐scale systems: The mining industrial case

Witrant

D’Innocenzo

Sandou

et al. 2009

Intl J Robust & Nonlinear

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SUMMARYThis paper describes a new industrial case on automation, for large scale systems with high environmental impact: the mining ventilation control systems. Ventilation control is essential for the operation of a mine in terms of safety (CO and N O x regulation) and energy optimization. We first discuss a novel regulation architecture, highlighting the interest for a model-based control approach and the use of distributed sensing capabilities thanks to a wireless sensor network (WSN). We propose a new model for underground ventilation. The main components of the system dynamics are described with time-delays, transmission errors, energy losses and concentration profiles. Two different modelbased control approaches, which can embody the complex dynamics of the system, are proposed. The first one resorts to a nonlinear model predictive control strategy (receding horizon) and aims to energy minimization thanks to a continuous operation of the fans. The second one, based on a hybrid description of the model and fans operation, provides automatic verification of the wireless control thanks to abstraction techniques. These control strategies are compared with simulations, in terms of regulation efficiency, energy consumption and need for computational capabilities. The industrial case description and control strategies open new vistas for the development of global system approaches that allow for the optimization of energy consumption of complex large-scale systems.

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“…Several contribution for geolocation in mines have been proposed (see, e.g., [13], [14], [15] and references therein). In particular, in [13], the authors investigate the main sources of positioning errors: the classical ranging methods, such as Time of Arrival or Received Signal Strength, produce unreliable distance measurements, especially in indoor environments.…”

Section: C Ase Study:localization Servicementioning

confidence: 99%

“…They propose a pattern matching localization technique, where a mobile station matches on-line wide band channel observations with the learned set of off-line "signatures", accurately locate its position, typically with an error less of 2 meters in 90 % of cases. In [14] and [15] an experimental study of the ultra wide band (UWB) radio channel in underground mines is presented. Results show that UWB is a potential candidate as physical layer for wireless in underground mines either for achieving accurate position estimations via time-of-arrival measurements or even RF fingerprint techniques, as well as for reliable communications.…”

Section: C Ase Study:localization Servicementioning

confidence: 99%

Mining Ventilation Automation: Wireless Sensing, Communication Architecture and Advanced Services

Fischione

Pomante

Rinaldi

et al. 2008

2008 IEEE International Conference on Automation Science and Engineering

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This paper reports on the definition of technical challenges for the sensing and communication networks of a mining ventilation automation project. Specifically, complex network architectures offering high performance are investigated. The aim is to support distributed estimation, and to propose an enhanced architecture for advanced services in the mining context, namely positioning and audio/video communications. Then, analytical models are developed to "expose" network performance to the control application, and a service platform is suggested to encapsulate all essential services that the network should provide to the distributed control application. Specific results are provided for the positioning service.

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Frequency Domain Analysis of UWB Channel Propagation in Underground Mines

Cited by 19 publications

References 11 publications

Modeling urban peer-to-peer channel characteristics for the 700 MHz and 4.9 GHz public safety bands

Modeling urban peer-to-peer channel characteristics for the 700 MHz and 4.9 GHz public safety bands

Wireless ventilation control for large‐scale systems: The mining industrial case

Mining Ventilation Automation: Wireless Sensing, Communication Architecture and Advanced Services

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