Ara es mostren els items 101-120 de 131

    • Radiation and Propagation: Test on Linear Circuits (English) 

      Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Fabregas Canovas, Francisco Javier; López Martínez, Carlos (2014-01-07)
      Report de recerca
      Accés obert
    • REACT: A new Technical Committee for Earth Observation and Sustainable Development Goals [Technical Committees] 

      Hajnsek, Irena; Chakrabarti, Subit; Donnellan, Andrea; Khan, Rabia Munsaf; López Martínez, Carlos; Natsuaki, Ryo; Milne, Anthony; Bhattacharya, Avik; Pankajakshan, Praveen; Shah, Pooja; Siddique, Muhammad Adnan (Institute of Electrical and Electronics Engineers (IEEE), 2023-06)
      Article
      Accés obert
      In November 2022 a new technical committee of the IEEE Geoscience and Remote Sensing Society (GRSS) was formed with the name Remote Sensing Environment, Analysis, and Climate Technologies (REACT). REACT is a venue for all ...
    • Remote Sensing Spring School in Argentina: SAR for environmental and production monitoring [Education] 

      Ferral, Anabella; Scavuzzo, Carlos M.; Solorza, Romina; Márquez, Jorge; Salvia, Mercedes; Gómez Deniz, Luis; Notarnicola, Claudia; Cigna, Francesca; López Martínez, Carlos; Bhattacharya, Avik; Li, Xiaofeng; Camps Carmona, Adriano José; Frery, Alejandro C. (Institute of Electrical and Electronics Engineers (IEEE), 2019-09-23)
      Article
      Accés obert
      In this column, we present a summary of the Third Remote Sensing Spring School at the Teófilo Tabanera Space Center, Córdoba, Argentina, 10–21 September 2018, to support the launch of the Satélite Argentino de Observación ...
    • RP: anàlisi de rendiment acadèmic i satisfacció 2012-13 Q2 

      Torres Torres, Francisco; Fabregas Canovas, Francisco Javier; López Martínez, Carlos (2013-07-08)
      Report de recerca
      Accés obert
    • RP: Autotest conocimientos previos Circuitos Lineales 

      Torres Torres, Francisco; Corbella Sanahuja, Ignasi; Fabregas Canovas, Francisco Javier; López Martínez, Carlos (2014-01-07)
      Report de recerca
      Accés obert
    • SAR Interferometric phase noise reduction using wavelet transform 

      López Martínez, Carlos; Cànovas, Xavier Fàbregas; Chandra, A. M. (IEE-INST ELEC ENG, 2001-05-31)
      Article
      Accés obert
      The problem of synthetic aperture radar interferometric phase noise reduction is addressed. A new technique based on discrete wavelet transforms is presented. This technique guarantees high resolution phase estimation ...
    • SAR interferometric phase statistics in wavelet domain 

      López Martínez, Carlos; Fabregas Canovas, Francisco Javier (2002-09-30)
      Article
      Accés obert
      Synthetic aperture radar (SAR) interferometry is employed to obtain topographic information. Owing to noise, interferometric information has to be filtered. The wavelet transform can be employed to filter the interferometric ...
    • Sentinel-1 InSAR coherence for land cover mapping: a comparison of multiple feature-based classifiers 

      Jacob, Alex; Vicente-Guijalba, Fernando; López Martínez, Carlos; López Sánchez, Juan Manuel; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2020-01-22)
      Article
      Accés obert
      This article investigates and demonstrates the suitability of the Sentinel-1 interferometric coherence for land cover and vegetation mapping. In addition, this study analyzes the performance of this feature along with ...
    • Ship detection in SAR images based on Maxtree representation and graph signal processing 

      Salembier Clairon, Philippe Jean; Liesegang Maria, Sergi; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2018-01-01)
      Article
      Accés obert
      This paper discusses an image processing architecture and tools to address the problem of ship detection in synthetic-aperture radar images. The detection strategy relies on a tree-based representation of images, here a ...
    • Simulation of FMCW radar systems based on software defined radio 

      López Martínez, Carlos; Vidal Morera, Marc (2016)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This work address the implementation of a Frequency Modulated Continuous Wave radar based on Software Defined Radio. In particular, we have simulated a USRP device implementing the radar system, in order to determine the ...
    • Sincohmap: land-cover and vegetation mapping using multi-temporal sentinel-1 interferometric coherence 

      Vicente Guijalba, F.; Jacob, Alexander; López-Sánchez Sánchez, Juan Manuel; López Martínez, Carlos; Duro Calvo, Javier; Pottier, Eric; Mallorquí Franquet, Jordi Joan (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      InSAR coherence is a promising parameter for land-cover classification and mapping. The ESA SEOM SInCohMap project is devised to test and analyze multi-temporal InSAR coherence potentialities exploiting dense multitemporal ...
    • SNR and standard deviation of cGNSS-R and iGNSS-R scatterometric measurements 

      Alonso Arroyo, Alberto; Querol Borràs, Jorge; López Martínez, Carlos; Zavorotny, Valery U.; Hyuk, Park; Pascual Biosca, Daniel; Onrubia Ibáñez, Raúl; Camps Carmona, Adriano José (2017-01-19)
      Article
      Accés obert
      This work addresses the accuracy of the Global Navigation Satellite Systems (GNSS)-Reflectometry (GNSS-R) scatterometric measurements considering the presence of both coherent and incoherent scattered components, for both ...
    • Soil permittivity estimation over croplands using full and compact polarimetric SAR data 

      Bhogapurapu, Narayanarao; Dey, Subhadip; Bhattacharya, Avik; López Martínez, Carlos; Hajnsek, Irena; Rao, Yalamanchili S. (Institute of Electrical and Electronics Engineers (IEEE), 2022-11-23)
      Article
      Accés obert
      Soil permittivity estimation using Polarimetric Synthetic Aperture Radar (PolSAR) data has been an extensively researched area. Nonetheless, it provides ample scope for further improvements. The vegetation cover over the ...
    • Space-Time PolSAR data temporal series processing based on binary partition trees 

      Alonso González, Alberto; López Martínez, Carlos (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A processing technique to exploit temporal series of coregistered Polarimetric Synthetic Aperture Radar (PolSAR) images is presented in this paper. This technique will be based on a region-based and multi-scale data ...
    • Statistical modeling of polarimetric SAR data: a survey and challenges 

      Deng, Xinping; López Martínez, Carlos; Chen, Jinsgon; Han, Pengpeng (2017-04-01)
      Article
      Accés obert
      Knowledge of the exact statistical properties of the signal plays an important role in the applications of Polarimetric Synthetic Aperture Radar (PolSAR) data. In the last three decades, a considerable research effort has ...
    • Statistical study of the H/A/Alpha decomposition based on a perturbation analysis of the coherency matrix 

      López Martínez, Carlos; Alonso González, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The eigendecomposition of the coherency matrix, as well as the Entropy, Anisotropy and mean Alpha angle are crucial for the physical understanding of the scattered echo in SAR polarimetry. This contribution considers a ...
    • Study of the speckle noise effects over the eigen decomposition of polarimetric SAR data: a review 

      López Martínez, Carlos; Alonso González, Alberto; Fabregas Canovas, Francisco Javier (European Space Agency (ESA), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper is focused on considering the effects of speckle noise on the eigen decomposition of the co- herency matrix. Based on a perturbation analysis of the matrix, it is possible to obtain an analytical expression ...
    • Target characterization by means of PolInSAR temporal evolution 

      Alonso González, Alberto; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work focuses on the exploitation of PolSAR and PolInSAR temporal series datasets in the context of change detection and characterization. Instead of a classical pixel-based approach, a Binary Partition Tree (BPT) data ...
    • Target scattering characterization in sar polarimetry using model-free approaches 

      Dey, Subhadip; Bhattacharya, Avik; Frery, Alejandro C.; López Martínez, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Comunicació de congrés
      Accés obert
      Target decomposition methods for polarimetric Synthetic Aperture Radar (PolSAR) data aim at explaining the scattering information. In this regard, several conventional model-based methods use scattering power components ...
    • Temporal PolSAR image series exploitation with binary partition trees 

      Alonso González, Alberto; López Martínez, Carlos; Salembier Clairon, Philippe Jean (IEEE, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, the processing of temporal PolSAR image series is addressed through a region-based and multi-scale data representation, the Binary Partition Tree (BPT). This structure contains useful information related ...