Publications

Next you can find a list of our publications arranged by topics and with links to download the papers:

Analysis of personal motion and gait using inertial sensors and location technologies for health applications

Our research is focused on the use of inertial sensors for gait analysis, including the development of devices, gait detection algorithms and parameter estimation. In particular, applying this analysis to the detection of fall risk and frailty in elderly people.

  • Marta Neira Álvarez, Antonio R. Jiménez Ruiz, Guillermo García-Villamil Neira, Elisabet Huertas-Hoyas, Antonio J. del-Ama, Luisa Ruiz-Ruiz, Sara García-de-Villa, Cristina Rodriguez-Sanchez. Assessing falls in the elderly population using G-STRIDE foot-mounted inertial sensor. Sci Rep 13, 9208 (2023). Go to article page
  • Sara García-de-Villa, Guillermo García-Villamil Neira, Marta Neira Álvarez, Elisabet Huertas-Hoyas, Luisa Ruiz Ruiz, Antonio J. del-Ama, María Cristina Rodríguez Sánchez & Antonio R. Jiménez, A database with frailty, functional and inertial gait metrics for the research of fall causes in older adults. Sci Data 10, 566 (2023). Go to article page
  • Luisa Ruiz-Ruiz, Antonio R. Jimenez, Guillermo Garcia-Villamil and Fernando Seco, Detecting Fall Risk and Frailty in Elders with Inertial Motion Sensors: A Survey of Significant Gait Parameters. Sensors. 2021; 21(20): 6918. https://doi.org/10.3390/s21206918. Download PDF
  • Guillermo García-Villamil, Marta Neira-Álvarez, Elisabet Huertas-Hoyas, Antonio Ramón Jiménez and Cristina Rodríguez-Sánchez, A Pilot Study to Validate a Wearable Inertial Sensor for Gait Assessment in Older Adults with Falls. Sensors. 2021; 21(13):4334. Go to article page
  • Guillermo García-Villamil Neira, Marta Neira Álvarez; Elisabet Huertas Hoyas; Luisa Ruiz Ruiz; Sara García de Villa; Antonio J. del-Ama; María Cristina Rodríguez Sánchez; Antonio Jiménez Ruiz, GSTRIDE: A database of frailty and functional assessments with inertial gait data from elderly fallers and non-fallers populations Go to article page

Personal localization in indoor and GPS-denied environments

This section contains works that discuss techniques for localization of people in indoor environments where GPS is not operative or reliable, based on access to RF transmitters (wifi access points, bluetooth nodes, RFID and UWB beacons), use of Pedestrian Reckoning (PDR) methods (whether foot-mounted or in a smartphone), and use of additional information such as maps, signals of opportunity, etc.

  • M. Gonzalez, R. Román, L. Bañares, M. Ferre, G. García, R. González-Arrabal, A. Ibarra, M.A. Monge, J. Olivares, J.M. Perlado, D. Rapisarda, F. Sánchez, J. Sanz, F. Seco, R. Vila, The TechnoFusion Consortium of Spanish institutions and facilities towards the development of fusion materials and related technologies in Europe, Journal of Nuclear Materials, Vol. 568 (2022), 153854. doi.org/10.1016/j.jnucmat.2022.153854. Download PDF
  • Juan D. Gutiérrez, Antonio R. Jiménez, Fernando Seco, Fernando J. Álvarez, Teodoro Aguilera, Joaquín Torres-Sospedra, Fran Melchor, GetSensorData: An extensible Android-based application for multi-sensor data registration. SoftwareX 2022, 19, 101186 Download PDF
  • P. Pascacio, J. Torres-Sospedra, A. R. Jiménez and S. Casteleyn, Mobile device-based Bluetooth Low Energy Database for range estimation in indoor environments. Scientific Data, 9(1), 281 (2022). Download PDF
  • F. Potortì et al., Off-Line Evaluation of Indoor Positioning Systems in Different Scenarios: The Experiences From IPIN 2020 Competition, in IEEE Sensors Journal, vol. 22, no. 6, pp. 5011-5054, 15 March 2022, doi: 10.1109/JSEN.2021.3083149. Go to article page
  • MC Rodriguez-Sanchez, L Fernández-Jiménez, AR Jiménez, J Vaquero, S Borromeo, JL Lázaro-Galilea. HelpResponder—System for the Security of First Responder Interventions. Sensors. 2021; 21(8):2614. https://doi.org/10.3390/s21082614 Go to article page
  • F. Potortì et al., «The IPIN 2019 Indoor Localisation Competition—Description and Results,» in IEEE Access, vol. 8, pp. 206674-206718, 2020, doi: 10.1109/ACCESS.2020.3037221.
  • J. L. Salazar González, L. M. Soria Morillo, J. A. Álvarez-García, F. Enríquez De Salamanca Ros and A. R. Jiménez Ruiz, «Energy-Efficient Indoor Localization WiFi-Fingerprint System: An Experimental Study,» in IEEE Access, vol. 7, pp. 162664-162682, 2019, doi: 10.1109/ACCESS.2019.2952221.
  • V. Renaudin et al., «Evaluating Indoor Positioning Systems in a Shopping Mall: The Lessons Learned From the IPIN 2018 Competition,» in IEEE Access, vol. 7, pp. 148594-148628, 2019, doi: 10.1109/ACCESS.2019.2944389.
  • Peltola P, Xiao J, Moore T, Jiménez AR, Seco F. GNSS Trajectory Anomaly Detection Using Similarity Comparison Methods for Pedestrian Navigation. Sensors. 2018; 18(9):3165. https://doi.org/10.3390/s18093165
  • Torres-Sospedra J, Jiménez AR, Moreira A, Lungenstrass T, Lu W-C, Knauth S, Mendoza-Silva GM, Seco F, Pérez-Navarro A, Nicolau MJ, et al. Off-Line Evaluation of Mo.bile-Centric Indoor Positioning Systems: The Experiences from the 2017 IPIN Competition. Sensors. 2018; 18(2):487. https://doi.org/10.3390/s18020487
  • T. Aguilera, F. Seco, J. Álvarez F, A. Jiménez, Broadband acoustic local positioning system for mobile devices with multiple access interference cancellation, Measurement, vol. 116 (2018), pp. 483-494, doi:10.1016/j.measurement.2017.11.046. Download PDF
  • A. R. Jiménez Ruiz and F. Seco Granja, «Comparing Ubisense, BeSpoon, and DecaWave UWB Location Systems: Indoor Performance Analysis,» in IEEE Transactions on Instrumentation and Measurement, vol. 66, no. 8, pp. 2106-2117, Aug. 2017, doi: 10.1109/TIM.2017.2681398. Download PDF
  • Francesco Potortì, Sangjoon Park, Antonio R. Jiménez et al. «Comparing the performance of indoor localization systems through the EvAAL framework» Sensors 2017, 17(10), 2327; doi:10.3390/s17102327
  • J. Torres-Sospedra, A.R. Jiménez, et al. «The Smartphone-Based Offline Indoor Location Competition at IPIN 2016: Analysis and Future Work», Sensors 2017, 17(3), 557; http://dx.doi.org/10.3390/s17030557
  • F. Seco and A. R. Jiménez, Autocalibration of a wireless positioning network with a FastSLAM algorithm, 2017 Indoor Positioning and Indoor Navigation Conference (IPIN), pp. –, Sapporo, Japan, September 18-21 (2017). Download PDF
  • F. Seco and A. R. Jiménez, Comparing multidimensional scaling methods for wireless sensor network localization, 2017 Seminario Anual de Automática, Electrónica Industrial e Instrumentación (SAAEI), pp. –, Valencia, Spain, July 5-7 (2017). Download PDF
  • F. Seco y A. R. Jiménez, Reconocimiento de actividades en el desplazamiento por interiores mediante un teléfono inteligente y señales de oportunidad, XXXVII Jornadas de Automática, Madrid, 7-9 septiembre 2016, Actas pp. 876-883. Download PDF
  • F. Zampella, A.R. Jiménez, F. Seco,  Improving indoor positioning using an efficient Map Matching and an extended motion model, IEEE Transactions on Vehicular Technology, vol. 64, no. 4, pp. 1304-1317 (2015). Download PDF
  • S. Tapia-Fernández, F. Seco, A. R. Jiménez, E. Rodríguez, J. Velázquez, Location Aware Web: concept, protocol and system, Proceedings of the 2015 IEEE International Conference on Industrial Technology (ICIT), pp. 3424-3429. Seville, Spain, March 17-19, 2015. Download PDF
  • E. Muñoz, A. R. Jiménez, F. de Ponte, F. Zampella, Evaluation of AHRS Algorithms for Inertial Personal Localization in Industrial Environments, Proceedings of the 2015 IEEE International Conference on Industrial Technology (ICIT), pp. 3412 – 3417 Seville, Spain, March 17-19, 2015. Download PDF
  • A.R. Jiménez, F. Zampella and F. Seco, Improving Inertial Pedestrian Dead-Reckoning by Detecting Unmodified Switched-on Lamps in Buildings, Sensors vol. 14, no. 1, pp. 731-769, Jan 2014. Download PDF
  • F. Zampella, A. Bahillo, J. Prieto, A. R. Jiménez and F. Seco, Pedestrian navigation fusing RSS/TOF measurements with adaptive movement/measurement models: experimental evaluation and theoretical limits, Sensors and Actuators A: physical, vol. 203, pp. 249-260 (2013). Download PDF
  • F. Seco, A. R. Jiménez and F. Zampella, Joint Estimation of Indoor Position and Orientation from RF Signal Strength Measurements, 4th Indoor Positioning and Indoor Navigation Conference (IPIN 2013), pp. –, Montbeliard, France, October 28–31st (2013). Download PDF
  • A. R. Jiménez, F. Zampella and F. Seco, Light-Matching: a new Signal of Opportunity for Pedestrian Indoor Navigation, 4th Indoor Positioning and Indoor Navigation Conference (IPIN 2013), pp. –, Montbeliard, France, October 28–31st (2013). Download PDF
  • F. Zampella, M. Khider, P. Robertson, A.R. Jiménez, Unscented Kalman filter and Magnetic Angular Rate Update (MARU) for an improved Pedestrian Dead-Reckoning, IEEE PLANS Position, Location and Navigation Symposium, pp. 129-139, 2012. Download PDF
  • A.R. Jiménez, F. Seco, F. Zampella, C.Prieto, J. Guevara, Improved heuristic drift elimination with magnetically-aided dominant directions (MiHDE) for pedestrian navigation in complex buildings, Journal of Location Based Services, vol. –, no. –, pp.–, 2012. Download PDF
  • A.R. Jiménez, F. Seco, F. Zampella, C.Prieto, J. Guevara, PDR with a Foot-Mounted IMU and Ramp Detection, Sensors vol. 11, no. 10, pp. 9393-9410, Oct 2011. Download PDF
  • A.R. Jiménez, F. Seco, F. Zampella, C.Prieto, J. Guevara, Improved Heuristic Drift Elimination (iHDE) for Pedestrian Navigation in Complex Buildings, International conference on indoor Positioning and Indoor Navigation – IPIN, Guimaraes, Portugal, pp.1-8, September 21-23, 2011. Download PDF
  • A.R. Jiménez, F. Seco, F. Zampella, C.Prieto, J. Guevara, Ramp Detection with a Foot-Mounted IMU for a Drift-Free Pedestrian Position Estimation, International conference on indoor Positioning and Indoor Navigation – IPIN, Guimaraes, Portugal, pp.1-4, September 21-23, 2011. Download PDF
  • F. Zampella ,A.R. Jiménez, F. Seco, C.Prieto, J. Guevara, Simulation of Foot-Mounted IMU Signals for the Evaluation of PDR Algorithms, International conference on indoor Positioning and Indoor Navigation – IPIN , Guimaraes, Portugal, pp.1-7, September 21-23, 2011. Download PDF
  • F. Seco, A. R. Jiménez, C. Prieto, J. Roa and K. Koutsou, A survey of mathematical methods for indoor localization, WISP 2009, 6th IEEE International Symposium on Intelligent Signal Processing, 26–28 August, 2009 Budapest, Hungary, pp. 9-14. Download PDF.
  • A.R. Jiménez, F. Seco, C. Prieto and J. Guevara, A Comparison of Pedestrian Dead-Reckoning Algorithms using a Low-Cost MEMS IMU, WISP 2009, 6th IEEE International Symposium on Intelligent Signal Processing, 26–28 August, 2009 Budapest, Hungary, pp. 37-42. Download PDF
  • A. R. Jiménez, F. Seco, C. Prieto, J. Roa, Tecnologías sensoriales de localización para entornos inteligentes, I Congreso español de informática – Simposio de Computación Ubicua e Inteligencia Ambiental, UCAmI2005 (Granada), pp.75-86, 2005 Download PDF

Localization using UWB

We use a variety of technologies to provide centimeter-level accuracy positioning and tracking of autonomous vehicles such as automated cars or drones in indoor and outdoor environments, complementing, or replacing, the GPS system.

  • Jiménez AR, Seco F. Improving the Accuracy of Decawave’s UWB MDEK1001 Location System by Gaining Access to Multiple Ranges. Sensors. 2021; 21(5):1787. https://doi.org/10.3390/s21051787. Download PDF
  • Gualda, D., Villadangos, J. M., Ureña, J., Ruiz, A. R. J., Seco, F., & Hernández, Á. (2019, September). Indoor positioning in large environments: ultrasonic and UWB technologies. In IPIN (Short Papers/Work-in-Progress Papers) (pp. 362-369) Download PDF
  • A. R. Jiménez and F. Seco, Finding objects using UWB or BLE localization technology: a museum-like use case, 2017 Indoor Positioning and Indoor Navigation Conference (IPIN), pp. –, Sapporo, Japan, September 18-21 (2017). Download PDF
  • A. R. Jiménez and F. Seco, Comparing Ubisense, Bespoon and Decawave UWB location systems: indoor performance analysis, IEEE Transactions on Instrumentation and Measurement , vol. 66, no. 8, pp. 2106-2117, August 2017. Download PDF
  • A. R. Jiménez and F. Seco, Comparing Decawave and Bespoon UWB location systems: indoor/outdoor performance analysis, 2016 Indoor Positioning and Indoor Navigation Conference (IPIN), pp. –, Alcalá de Henares, Spain, October 4-7 (2016). Download PDF
  • A.R. Jiménez y F. Seco, Localización precisa usando radio UWB y Dead-Reckoning para cooperación eficiente humano-robot, XXXVI Jornadas de Automática, Bilbao, 2-4 septiembre 2015, Actas pp. 284-291. Download PDF
  • F. Zampella, A. De Angelis, I. Skog, D. Zachariah, A. R. Jiménez, A constraint approach for UWB and PDR fusion, International conference on indoor Positioning and Indoor Navigation – IPIN, Sydney, Australia, pp.1-9, November 13-15, 2012. Download PDF
  • A. R. Jiménez, J. Godoy and F. Seco, Evaluación de un sistema de radio UWB para posicionamiento preciso de vehículos, XXXVII Jornadas de Automática, Madrid, 7-9 septiembre 2016, Actas pp. 360-367. Download PDF

Localization using RFID

  • V. Tormo, F. Seco and A. R. Jiménez. «Design of an RFID-based positioning system for safety of personnel in nuclear facilities.» In 2021 International Conference on Indoor Positioning and Indoor Navigation (IPIN), pp. 1-8. IEEE, 2021. Download PDF
  • Seco F, Jiménez AR. Smartphone-Based Cooperative Indoor Localization with RFID Technology. Sensors. 2018; 18(1):266. https://doi.org/10.3390/s18010266. Download PDF
  • A. R. Jiménez and F. Seco, Localización de personas en interiores por radio tomografía RFID, 2017 Seminario Anual de Automática, Electrónica Industrial e Instrumentación (SAAEI), pp. –, Valencia, Spain, July 5-7 (2017). Download PDF
  • F. Seco, A. R. Jiménez and X. Zheng, RFID-based centralized cooperative localization in indoor environments, 2016 Indoor Positioning and Indoor Navigation Conference (IPIN), pp. –, Alcalá de Henares, Spain, October 4-7 (2016). Download PDF
  • A. R. Jiménez and F. Seco, Combining RSS-based Trilateration Methods with Radio-Tomographic Imaging: Exploring the Capabilities of Long-range RFID Systems , 2015 Indoor Positioning and Indoor Navigation Conference (IPIN), pp. –, Banff, Alberta, Canada, October 13-16 (2015). Download PDF
  • F. Seco, K. Koutsou, F. Ramos, A. R. Jiménez, Localización personal en entornos interiores con tecnología RFID, Revista Iberoamericana de Automática e Informática industrial, vol. 10, no. 3, pp. 313-324 (2013). Download PDF
  • A.R. Jiménez, F. Seco, F. Zampella, J.C. Prieto and J. Guevara, Indoor Localization of Persons in AAL scenarios using an Inertial Measurement Unit (IMU) and the Signal Strength (SS) from RFID Tags, Communications in Computer and Information Science (Springer), pp. –, 2013. Download PDF
  • A.R. Jiménez, F. Seco, C.Prieto, J. Guevara, Accurate Pedestrian Indoor Navigation by Tightly Coupling Foot-Mounted IMU and RFID Measurements, IEEE Trans. on Instrumentation and Measurement, vol. 61, no. 1, pp.178-189, January 2012. Download PDF
  • F. Seco, C. Plagemann, A. R. Jiménez, W. Burgard, Improving RFID-based indoor positioning accuracy using Gaussian processes, Indoor Positioning and Indoor Navigation (IPIN), pp. –, Zurich, Switzerland, October 13–15th (2010). Download PDF
  • A.R. Jiménez, F. Seco, C. Prieto and J. Guevara, Indoor Pedestrian Navigation using an INS/EKF framework for Yaw Drift Reduction and a Foot-mounted IMU, WPNC 2010, 7th Workshop on Positioning, Navigation and Communication, March 11-12, 2010, Dresden, Germany. Download PDF
  • A. R. Jiménez, F. Seco, C. Prieto, J. Guevara, Pedestrian indoor navigation by aiding a foot-mounted IMU with RFID signal strength measurements , International Conference on Indoor Positioning and Indoor Navigation (IPIN), pp. 1-7, Zurich, Switzerland, October 13–15th (2010). Download PDF
  • F. Zampella, A. R. Jiménez and F. Seco, Robust indoor positioning fusing PDR and RF technologies: the RFID and UWB case, 4th Indoor Positioning and Indoor Navigation Conference (IPIN), pp. –, Montbeliard, France, October 28–31st (2013). Download PDF
  • A. D. Koutsou, F. Seco, A. R. Jiménez, J. Roa J. Ealo, C. Prieto, J. Guevara, Preliminary Localization Results With An RFID Based Indoor Guiding System, IEEE International Symposium on Intelligent Signal Processing, pp. 917-922, Alcalá de Henares, Spain, October 3–5th (2007). Download PDF

Fine-grained positioning with acoustic and ultrasonic signals

Here we list works giving details of acoustic and ultrasonic 3D positioning systems which offer high precision (typically around 1 cm) by measuring the time-of-flight of coded and modulated acoustic signals from a set of beacons in known locations and use of multilateration algorithms; a scheme based in the GPS positioning system.

  • F. Seco y A.R. Jiménez, Transductores basados en película electromecánica para aplicaciones ultrasónicas en robótica, XXXVI Jornadas de Automática, Bilbao, 2-4 septiembre 2015, Actas pp. 330-337. Download PDF
  • F. Seco, A. R. Jiménez, F. Zampella, Fine-grained acoustic positioning with compensation of CDMA interference, Proceedings of the 2015 IEEE International Conference on Industrial Technology (ICIT), pp. 3418-3423. Seville, Spain, March 17-19, 2015. Download PDF
  • F. Seco, J. C. Prieto, A. R. Jiménez y J. Guevara, Compensation of Multiple Access Interference Effects in CDMA-based Acoustic Positioning Systems, IEEE Transactions on Instrumentation and Measurement , vol. 63, no. 10, pp. 2368-2378, October 2014. Download PDF
  • J. Guevara, A.R. Jiménez, C. Prieto y F. Seco, Auto-localization algorithm for local positioning systems, Ad-hoc networks, vol. 10, no. 6, pp. 1090-1100 (2012). Download PDF
  • J. Guevara, A.R. Jiménez, C. Prieto y F. Seco, Error Estimation for the Linearized Auto-Localization Algorithm, Sensors, vol. 12, no. 3, pp. 2561-2581 (2012). Download PDF
  • J. Guevara, A.R. Jiménez, A. S. Morse, J. Fang, C. Prieto, F. Seco, Auto-localization in Local Positioning Systems: a closed-form range-only solution, IEEE International Symposium on Industrial Electronics, ISIE 2010, pp.–, Bari, Italy, July 5th-7th, 2010. Download PDF
  • J.C. Prieto, C. Croux y A.R. Jiménez, RoPEUS: A New Robust Algorithm for Static Positioning in Ultrasonic Systems, Sensors vol: 9, no. 6, pp. 4211-4229 (2009). Download PDF
  • A.R. Jiménez, J.C. Prieto, J.L. Ealo, J. Guevara y F. Seco, A computerized system to determine the provenance of finds in archaeological sites using acoustic signals, Journal of Archaeological Science, vol. 36, no. 10, pp. 2415-2426 (2009). Download PDF
  • J.C. Prieto, A. R. Jiménez, J. Guevara, J. Ealo, F. Seco, J. Roa, A. Koutsou, Performance evaluation of 3D-LOCUS advanced acoustic LPS, IEEE Transactions on Instrumentation and Measurement, vol. 58, no. 8, august 2009, pp. 2385-2395 Download PDF
  • M. Laguna, J. Roa, A. R. Jiménez y F. Seco, Diversified local search for the optimal layout of beacons in an indoor positioning system, IIE Transactions, vol. 41, no. 3, pp. 247-259 (2009). Download PDF
  • F. Seco, J. Ealo and A. R. Jiménez, Modulation and Codification of Ultrasonic Signals with EMFi Transducers, 2009 IEEE International Ultrasonics Symposium, Roma, Sept. 20-23, 2009. Download PDF
  • J. Ealo, F. Seco and A. R. Jiménez, Broadband EMFi-based transducers for ultrasonic air applications, IEEE Trans. on Ultrasonics, Ferroelectrics and Frequency Control, vol. 55, no. 4, pp. 919-929 (2008). Download PDF
  • J.C. Prieto, A. R. Jiménez, J. Guevara, J. Ealo, F. Seco , J. Roa, A. Koutsou, Robust Regression Applied to Ultrasound Location Systems, IEEE/ION Position, Location and Navigation Symposium, Monterrey, California, 5-8 de mayo de 2008, Conference Proceedings, pp. 671-678. Download PDF
  • J. Guevara, A. Jiménez, F. Seco, C. Prieto, J. Ealo, J. Roa y K. Koutsou, Sistema de identificación y localización simbólica utilizando una red sensorial de nodos ultrasónicos, XXVIII Jornadas de Automática, Huelva, 5-7 de septiembre de 2007 Download PDF
  • J. C. Prieto, A. R. Jiménez, J. Guevara, J. Ealo, F. Seco, J. Roa, F. Ramos, Subcentimeter-accuracy localization through broadband acoustic transducers, IEEE International Symposium on Intelligent Signal Processing, Alcalá de Henares, Spain, 3-5 de Octubre de 2007, pp. 929-934. Download PDF
  • J.O. Roa, A.R. Jiménez, F. Seco, C. Prieto, J.L. Ealo and J. Guevara, Optimal placement of sensors in trilateration: Regular lattices vs meta-heuristic solutions, Lecture Notes in Computer Science, Computer Aided Systems Theory EUROCAST 2007, vol. 4739/2007, pp. 780-787. Download PDF
  • J.O. Roa, A.R. Jiménez, F. Seco, C. Prieto, J.L. Ealo, F. Ramos y J. Guevara, Distribución optimizada de balizas para sistemas de localización fundamentados en Trilateración Esférica e Hiperbólica, MAEB 2007, pp.377-384. Download PDF
  • J.O. Roa, A.R. Jiménez, F. Seco, C. Prieto, J.L. Ealo, F. Ramos y J. Guevara, Un método heurístico mejorado basado en algoritmos genéticos para optimizar la ubicación de balizas en sistemas de localización, XXVII Jornadas de Automática, Almería, 6-9 septiembre 2006, pp. 120-129. Download PDF
  • J.O. Roa, A.R. Jiménez, F. Seco, C. Prieto, J.L. Ealo y F. Ramos, Primeros resultados de la optimización de la ubicacion de balizas para localización utilizando algoritmos genéticos, XXVI Jornadas de Automática, Alicante, 7-10 septiembre 2005, pp. 913-923. Download PDF
  • F. Seco y A. R. Jiménez, Ultrasound modulation and codification for localization systems, in New acoustics: selected topics II (CSIC, Biblioteca de Ciencias), pp 167-186 (2006) Download PDF
  • A. R. Jiménez y F. Seco, Ultrasonic Localization Methods for Accurate Positioning, in New acoustics: selected topics II (CSIC, Biblioteca de Ciencias), pp. 147-166 (2006) Download PDF
  • A.R. Jiménez and F. Seco, Precise localisation of archaeological findings with a new ultrasonic 3D positioning sensor, Sensors and Actuators A, vol. 123-124, pp. 224-233, 2005. Download PDF
  • J.M. Martín, A.R. Jiménez, F. Seco, L. Calderón, J.L. Pons, R. Ceres, Estimating the 3D-position from time delay data of US-waves: Experimental analysis and new processing algorithm, Sensors & Actuators A, (101), pp.311-321, 2002. Download PDF

Micrometer Location Techniques and Systems

Research on sensors for highly accurate (micrometer level) positioning in one or several dimensions. The systems described in these articles are intended for industrial / metrological applications.

  • F. Seco and A.R. Jiménez, «Modelling the generation and propagation of ultrasonic signals in cylindrical waveguides», in Ultrasonic waves, chapter 1, pp 1-28, Intech Open Access Publisher (2012) (ISBN 978-953-307-955-4). Download PDF
  • A.R. Jiménez, J. Guevara, F. Seco, J.C. Prieto, J.J. Esteve, V. Mico y T. Molina, A Real-Time Tool Positioning Sensor for Machine-Tools, Sensors, vol. 9, no. 10, pp. 7622-7647 (2009). Download PDF
  • F. Seco, J. M. Martín and A. R. Jiménez, Improving the Accuracy of Magnetostrictive Linear Position Sensors, IEEE Trans. on Instrumentation and Measurement, vol. 58, no. 3, pp. 722-729 (2009) Download PDF
  • V. Mico , J. Caballero, T. Molina, S. Simón, R. Bueno, A.R. Jiménez, L. Calderón, M. Calvache, F.Seco, Three-dimensional interferometric measurement system for machine tool on-line control Photonics Applications in Industry and Research IV, SPIE, Warsaw Univ. of Technology, Poland, pp.8 , 2005 Download PDF
  • F. Seco, J. M. Martín, A. R. Jiménez y L. Calderón, A High Accuracy Magnetostrictive Linear Position Sensor, Sensors and Actuators A, 123-124 pp. 216-223, 2005. Download PDF
  • F. Seco, J. M. Martín, J.L. Pons, A. R. Jiménez, Hysteresis Compensation in a Magnetostrictive Linear Position Sensor, Sensors and Actuators A, 110 (1-3), pp.247-253, 2004. Download PDF

Miscellaneous topics

Other works related to diverse topics that the Lopsi group has worked on over the years: computer vision for automated agricultural and industrial processes; use of ultrasound signals for industrial inspection, exploration of the environment, and biological use of ultrasound; and the design of electromechanical transducers as ultrasonic wave generators.

  • J. Ealo, C. Prieto, F. Seco, Easy Generation of Airborne Ultrasonic Helical Wavefronts, 2011 IEEE International Ultrasonics Symposium (IUS), Orlando, Florida, USA, 18-21 de octubre de 2011 Download PDF
  • J. Ealo, C. Prieto, F. Seco, Airborne Ultrasonic Vortex Generation Using Flexible Ferroelectrets, IEEE Trans. on Ultrasonics, Ferroelectrics and Freq. Control, vol. 58, no. 8, pp. 1651-1657, Aug 2011. Download PDF
  • A.R. Jiménez, F. Seco, A Short-range Ship Navigation System based on Ladar Imaging and Target Tracking for Improved Safety and Efficiency, IEEE Transactions on Intelligent Transportation Systems, vol. 10, no. 1, pp. 186-197, 2009. Download PDF
  • A. Egaña, F. Seco, R. Ceres, Processing of ultrasonic echo envelopes for object location with nearby receivers, IEEE Trans. on Instrumentation and Measurement, vol. 57, no. 12, pp. 2751-2755 (2008) Download PDF
  • F. Seco, A. R. Jiménez y M. D. del Castillo, Air coupled ultrasonic detection of surface defects in food cans, Measurement Science and Technology, vol. 17, pp.1409-1416, 2006. Download PDF
  • F. Seco y A. R. Jiménez, Sistema de visión ultrasónica de los murciélagos, Seminario de Sistemas Inteligentes SSI 2006, pp. 31-45, Universidad Rey Juan Carlos, Madrid, 11 de mayo de 2006 Download PDF
  • A.R. Jiménez, E. Laizola, F. Morgado, M. Calvache and F. Seco, A Computer Vision System for Estimating and Controlling the Weight of Glass Gobs during their Industrial Formation Process, Journal of Electronic Imaging , 13 (3), pp. 613-618, 2004. Download PDF
  • A.R. Jiménez, R. Ceres, J.L. Pons, A new adaptive filter and quality evaluation index for image restoration, Pattern Recognition, 34 (2), pp.457-467, 2001. Download PDF.
  • A.R. Jiménez, R. Ceres, J.L. Pons, A vision system based on a laser range-finder applied to robotic fruit harvesting, Machine Vision and Applications, 11 pp.321-329, 2000. Download PDF
  • A.R. Jiménez, R. Ceres, J.L. Pons, A survey of computer vision methods for locating fruit on trees, Transaction of the ASAE, 43 (6), pp.1911-1920, 2000. Download PDF
  • A.R. Jiménez, A.K. Jain, R. Ceres, J.L. Pons, Automatic Fruit Recognition: A survey and new results using range-attenuation images Pattern Recognition, 32 (10), pp.1719-1736, 1999. Download PDF

Last update: December 19th, 2023