A. Sona

University of Padova, Padua, Veneto, Italy

Are you A. Sona?

Claim your profile

Publications (65)20.25 Total impact

  • R. Ricci, A. Sona
    [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, a novel and comprehensive measurement approach is proposed for the detection and analysis of human motion signature. The approach combines theoretical concepts and tools of micro-Doppler theory, image processing, and human modeling, in a original way. The attention is primarily focused on the description of the most meaningful parameters influencing the accuracy of the obtained signature. The ultimate purpose is to provide a framework through which organizing, comparing, and merging future research activities, ideas and results in the field of human motion signature analysis for security, health and disaster recovery purposes. Some simulation and experimental results underlying the feasibility and effectiveness of the measurement approach are also summarized and analyzed.
    SPIE Defense, Security, and Sensing; 05/2013
  • R. Ricci, A. Sona
    [Show abstract] [Hide abstract]
    ABSTRACT: Human motion analysis is a task of increasing importance in several modern application fields, such as in medicine, avionics, security, and disaster recovery. In this paper, the use of Hough transform is considered and discussed in the scenario of human motion analysis. In particular, the influence of some transform parameters is investigated with the aim of improving Hough transform set-up when used in a measurement approach for human motion analysis. To this purpose, Hough transform has been applied to a set of results obtained by exploiting a suitable measurement system developed by the same authors, in the specific case of ultrasound waves. Such results have been obtained by using some reference images in the form of spectrograms achieved by using the system along with a purposely developed reference target emulating some human body movements. The results show that the considered measurement system, and more generally the human motion analysis and detection system, can be optimized by a proper set-up and use of Hough transform algorithm.
    SPIE Defense, Security, and Sensing; 05/2013
  • R. Ricci, A. Sona
    [Show abstract] [Hide abstract]
    ABSTRACT: Human motion analysis is nowadays an appealing task of increasing interest in several application fields, like medicine and security. Many applications cover gait analysis, disaster recovery, telemetry, and surveillance. In this paper, the characterization of an ultrasound-based measurement system for human motion detection and analysis is dealt with. To this purpose, a number of measurement results in the form of spectrograms have been reported and discussed. They have been achieved by using a suitably-designed mechanical system emulating some specific human body movements. Hough transform has been applied to spectrograms, and the obtained results have been compared to the theoretical trajectories. Results of these comparisons show a good agreement between theoretical trajectories and measures, as well as between measures and Hough transform outcomes. This proves that the measurement system is actually efficient for human motion detection and analysis.
    Instrumentation and Measurement Technology Conference (I2MTC), 2013 IEEE International; 01/2013
  • Alessandro Sona, Roberto Ricci
    [Show abstract] [Hide abstract]
    ABSTRACT: Data acquisition is a task nowadays of fundamental importance in several applications of mechatronics and automation. From one side, it requires the use of sensors, signal conditioning circuits, analog to digital converters and processing blocks. From another, it requires an in-depth knowledge of measurement concepts such as: accuracy, calibration, resolution, effective number of bits, noise, dynamic range, etc. In this paper, the authors propose a new educational test-bench, best tailored for undergraduate bachelor students in mechatronics and aimed at familiarizing on signal data acquisition and measurement when performed in a mechatronics context. The system consists of a sliding cart moving on a linear guide driven by a stepper motor and equipped with a red green blue sensor. Good feedback from students has already been received.
    Conference Record - IEEE Instrumentation and Measurement Technology Conference 01/2012; DOI:10.1109/I2MTC.2012.6229692
  • Alessandro Sona, Giada Giorgi, Roberto Ricci
    [Show abstract] [Hide abstract]
    ABSTRACT: Human motion analysis is a task of increasing importance in several modern application fields, such as in medicine, avionics, security, and disaster recovery. It requires the application of sophisticated measurement techniques based on micro-Doppler effect, human walking modeling, cinematic simulation, image processing and measurements. In this paper, a novel and comprehensive measurement approach is proposed for the detection and analysis of human motion. The approach combines theoretical concepts and tools of micro-Doppler theory, image processing, and human modeling, in a original way. The attention is primarily focused on some measurement issues and implications that, if taken into account, can give an important enhancement to micro-Doppler-based future applications. Some simulation results concerning one specific issue of the measurement approach are finally provided and discussed.
    Conference Record - IEEE Instrumentation and Measurement Technology Conference 01/2012; DOI:10.1109/I2MTC.2012.6229690
  • Atti del Congresso del Gruppo di Misure Elettriche ed Elettroniche Italiano. Genova; 09/2011
  • Atti del Congresso del Gruppo di Misure Elettriche ed Elettroniche Italiano. Genova; 09/2011
  • Source
    VoIP Technologies, 02/2011; , ISBN: 978-953-307-549-5
  • [Show abstract] [Hide abstract]
    ABSTRACT: The paper analyzes the usage of planar inductors on a Printed Circuit Board (PCB) for ElectroMagnetic Interference (EMI) filtering applications. In particular, a method is proposed that allows to efficiently adjust the inductance of a planar inductor and to finely tune an EMI filter. Simulations and experiments are presented, supporting the proposed tuning technique. The method can be advantageously adopted by designers needing to mitigate specific EMI problems at the communication ports of a device without the need of discrete components. For instance, one may easily adjust the parameters of a filter during laboratory testing performed on a prototype, or later on, during compliance verification of the working device.
    Proceedings; 01/2011
  • Atti del Congresso del Gruppo di Misure Elettriche ed Elettroniche Italiano, Gaeta (LT); 09/2010
  • Atti del Congresso del Gruppo di Misure Elettriche ed Elettroniche Italiano, Gaeta (LT); 09/2010
  • [Show abstract] [Hide abstract]
    ABSTRACT: An experimental study of a modern ultra high frequency (UHF) radio frequency identification (RFID) system is here proposed. Some relationships between the electromagnetic field levels received by the deployed devices and the system overall performance are in particular analyzed. The main purpose is to experimentally analyze the behavior and performance of a real world UHF RFID system underlying the importance of preliminary measurements in the setup and optimization of these systems. Practical rules to improve the system reliability are finally deduced. To this aim, a detailed description of tags operation in near and far field regions of the reader is given, along with meaningful results from experiments conducted on purpose. Experiments have been carried out by using an ad-hoc realized testbed, equipped with a real-life UHF RFID system.
    Instrumentation and Measurement Technology Conference (I2MTC), 2010 IEEE; 06/2010
  • [Show abstract] [Hide abstract]
    ABSTRACT: The paper investigates the reliability of simulation models for the assessment of wireless network performances under the effects of radio interference. In particular, some critical issues affecting the accuracy of modern simulation tools are addressed. The main purpose is to highlight the role of measurements in the optimization of theoretical models. Accordingly, some meaningful results from experiments are compared with the corresponding ones obtained from simulations, and simulation models have been consequently improved. Experiments and simulations have been carried out by using a suitable testbed, described in the paper, enlisting a set of IEEE 802.15.4 and 802.11b compliant devices operating in the 2.4 GHz industrial scientific and medical band.
    Instrumentation and Measurement Technology Conference (I2MTC), 2010 IEEE; 06/2010
  • Proc. of IEEE International Symposium on Electromagnetic Compatibility; 01/2010
  • Atti del XXVII Congresso Nazionale Gruppo di Coordinamento -Misure Elettriche ed Elettroniche; 01/2010
  • Matteo Bertocco, Alessandro Sona
    [Show abstract] [Hide abstract]
    ABSTRACT: The measurement of far field disturbance radiated by printed circuit boards (PCBs) is here dealt with. In particular an efficient measurement system is proposed by means of which electronic designers can assess the effectiveness of a given electromagnetic compatibility (EMC) solution to be applied to a PCB in order to reduce the radiated disturbance in the 2-8 GHz band. The effectiveness of the system in terms of measurement repeatability is assessed, and one meaningful case study described. The values of measurement repeatability obtained, even in the order of 0.2 dB, show that the system can profitably be used for experimental procedures aimed at verifying the effectiveness of EMC solutions. The system is also suitable for experimental comparisons in terms of electromagnetic emissions of communication devices operating in the 2.45 GHz industrial, scientific and medical (ISM) band, such as those of ZigBee, Wi-Fi and Bluetooth standards.
    Conference Record - IEEE Instrumentation and Measurement Technology Conference 01/2010; DOI:10.1109/IMTC.2010.5488047
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The performance of wireless local area networks supporting video streaming applications, based on MPEG-2 video codec, in the presence of interference is here dealt with. IEEE 802.11g standard wireless networks, that do not support QoS in according with IEEE 802.11e standard, are, in particular, accounted for and Bluetooth signals, additive white Gaussian noise, and competitive data traffic are considered as sources of interference. The goal is twofold: from one side, experimentally assessing and correlating the values that some performance metrics assume at the same time at different layers of an IEEE 802.11g WLAN delivering video streaming in the presence of in-channel interference; from the other side, deducing helpful and practical hints for designers and technicians, in order to efficiently assess and enhance the performance of an IEEE 802.11g WLAN supporting video streaming in some suitable setup conditions and in the presence of interference. To this purpose, an experimental analysis is planned following a cross-layer measurement approach, and a proper testbed within a semianechoic chamber is used. Valuable results are obtained in terms of signal-to-interference ratio, packet loss ratio, jitter, video quality, and interference data rate; helpful hints for designers and technicians are finally gained.
    EURASIP Journal on Wireless Communications and Networking 01/2010; 2010. DOI:10.1155/2010/620832 · 0.81 Impact Factor
  • Atti del XXVII Congresso Nazionale Gruppo di Coordinamento - Misure Elettriche ed Elettroniche; 01/2010
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the last few years wireless sensor networks (WSNs) have gained an increasing interest in the scientific community, due to their wide variety of applications and technical issues to be faced. Many challenges and design issues arise in this ad hoc scenario. In this chapter, some concepts are discussed having in mind a twofold point of view: the telecommunication researcher or GRID designer perspective, and the metrologist or instrumentation and measurement designer one. Such mixed view allows pointing out aspects that are somewhat seldom considered and that instead could provide interesting results in both the above research areas. KeywordsDistributed measurement systems-Wireless sensor networks-Ad hoc network-Design issues
    12/2009: pages 405-415;
  • [Show abstract] [Hide abstract]
    ABSTRACT: Digital-video-broadcasting-terrestrial (DVB-T) systems affected by in-channel interference are dealt with here. Attention is mainly paid to the experimental assessment of the video quality perceived by the end user when only in-channel interference degrades the transmission path. To this aim, a number of experiments are conducted through a proper testbed, which enlists a flexible DVB-T broadcasting platform. To confer reliability and generality to the research activity, different configurations of the transmission platform parameters are arranged; moreover, common types of interference are taken into account. Due to a proper cross-layer measurement approach, valuable relations involving values that physical and modulation quantities and application-level metrics assume at the same time are deduced. The ultimate goal is to derive helpful information and hints for designers and technicians that are to be applied to efficiently optimize the performance of a DVB-T system whenever in-channel interference is of major concern.
    IEEE Transactions on Instrumentation and Measurement 09/2009; DOI:10.1109/TIM.2009.2015635 · 1.71 Impact Factor