Search results for "telecomunicacions"
showing 4 items of 4 documents
Aerosol Lidar Intercomparison in the Framework of SPALINET—The Spanish Lidar Network: Methodology and Results
2009
Abstract—A group of eight Spanish lidars was formed in order to extend the European Aerosol Research Lidar Network–Advanced Sustainable Observation System (EARLINET-ASOS)project. This study presents intercomparisons at the hardware and software levels. Results of the system intercomparisons are based on range-square-corrected signals in cases where the lidars viewed the same atmospheres. Comparisons were also made for aeros backscatter coefficients at 1064 nm (2 systems) and 532 nm (all systems), and for extinction coefficients at 532 nm (2 systems). In total, three field campaigns were carried out between 2006 and 2007. Comparisons were limited to the highest layer found before the free tr…
Use of acousto-Optic Filters in imaging applications. A contribution to the SmartSpectra project
2009
This Thesis analyses the use of an acousto-optic tunable filter (AOTF) for the realisation of spectral imaging systems. An AOTF is an electronically tunable spectral bandpass optical filter. It consists on a crystal that, excited with acoustic waves, diffracts and then separates a single wavelength of light from a broadband source. The wavelength of selected light is a function of the frequency of the signal applied to the crystal. We have implemented a spectral imaging instrument called Autonomous Tunable Filtering System (ATFS) that includes an AOTF in order to acquire multispectral images with a monochrome digital camera. Careful design and calibration permits its use in spectroscopic ap…
Detección automática de podredumbres en cítricos mediante procesado avanzado de imágenes hiperespectrales
2010
La citricultura constituye actualmente una parte importantísima de la economía en la Comunidad Valenciana. Uno de los principales problemas presentes en la industria citrícola son las podredumbres producidas por los hongos Penicillium digitatum y Penicillium italicum. La detección temprana del daño producido por los hongos en los cítricos es especialmente importante para la industria distribuidora de cítricos, ya que un reducido número de frutas infectadas puede diseminar la infección a toda una partida de cítricos, produciendo grandes pérdidas económicas. Actualmente en la industria citrícola la inspección y eliminación de cítricos dañados por podredumbres se realiza de manera manual por o…
Pràctiques de laboratori de Sistemes i Serveis de Telecomunicació
2016
El document forma part dels materials docents programats mitjançant l'ajut del Servei de Política Lingüística de la Universitat de València: 1.547/2016 Guions de pràctiques de l'assignatura Sistemes i Serveis de Telecomunicació impartits en el Grau d'Enginyeria Electrònica de Telecomunicacions de l'Escola Tècnica Superior d'Enginyeria de la Universitat de València al llarg del curs 2016-17. Guides of practical sessions of the subject Systems and Services of Telecommunication given in the Degree of Electronic Engineering of Telecommunications of the Escola Tècnica Superior d'Enginyeria of the Universitat de València along the course 2016-17.